Moved doc files to testing document structure testing/user ... testing/developer and modified doc index to match dir structure

Change-Id: I4b1a535808a48773505fa7874c61707cd349fced
Signed-off-by: Trevor Cooper <trevor.cooper@intel.com>

13 files changed, 0 insertions, 8113 deletions

diff --git a/docs/requirements/LICENSE b/docs/requirements/LICENSE
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index 7bc572ce..00000000
--- a/docs/requirements/LICENSE
+++ /dev/null
@@ -1,2 +0,0 @@
-This work is licensed under a Creative Commons Attribution 4.0 International License.
-http://creativecommons.org/licenses/by/4.0
diff --git a/docs/requirements/ietf_draft/LICENSE b/docs/requirements/ietf_draft/LICENSE
deleted file mode 100644
index 7fc9ae14..00000000
--- a/docs/requirements/ietf_draft/LICENSE
+++ /dev/null
@@ -1,12 +0,0 @@
-Copyright (c) 2016 IETF Trust and the persons identified as the
-document authors.  All rights reserved.
-
-This document is subject to BCP 78 and the IETF Trust's Legal
-Provisions Relating to IETF Documents
-(http://trustee.ietf.org/license-info) in effect on the date of
-publication of this document.  Please review these documents
-carefully, as they describe your rights and restrictions with respect
-to this document.  Code Components extracted from this document must
-include Simplified BSD License text as described in Section 4.e of
-the Trust Legal Provisions and are provided without warranty as
-described in the Simplified BSD License.
diff --git a/docs/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-00.xml b/docs/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-00.xml
deleted file mode 100644
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--- a/docs/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-00.xml
+++ /dev/null
@@ -1,1016 +0,0 @@
-<?xml version="1.0" encoding="US-ASCII"?>
-<!DOCTYPE rfc SYSTEM "rfc2629.dtd">
-<?rfc toc="yes"?>
-<?rfc tocompact="yes"?>
-<?rfc tocdepth="3"?>
-<?rfc tocindent="yes"?>
-<?rfc symrefs="yes"?>
-<?rfc sortrefs="yes"?>
-<?rfc comments="yes"?>
-<?rfc inline="yes"?>
-<?rfc compact="yes"?>
-<?rfc subcompact="no"?>
-<rfc category="info" docName="draft-ietf-bmwg-vswitch-opnfv-00"
-     ipr="trust200902">
-  <front>
-    <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in
-    OPNFV</title>
-
-    <author fullname="Maryam Tahhan" initials="M." surname="Tahhan">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>maryam.tahhan@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>billy.o.mahony@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Al Morton" initials="A." surname="Morton">
-      <organization>AT&amp;T Labs</organization>
-
-      <address>
-        <postal>
-          <street>200 Laurel Avenue South</street>
-
-          <city>Middletown,</city>
-
-          <region>NJ</region>
-
-          <code>07748</code>
-
-          <country>USA</country>
-        </postal>
-
-        <phone>+1 732 420 1571</phone>
-
-        <facsimile>+1 732 368 1192</facsimile>
-
-        <email>acmorton@att.com</email>
-
-        <uri>http://home.comcast.net/~acmacm/</uri>
-      </address>
-    </author>
-
-    <date day="8" month="July" year="2016"/>
-
-    <abstract>
-      <t>This memo describes the progress of the Open Platform for NFV (OPNFV)
-      project on virtual switch performance "VSWITCHPERF". This project
-      intends to build on the current and completed work of the Benchmarking
-      Methodology Working Group in IETF, by referencing existing literature.
-      The Benchmarking Methodology Working Group has traditionally conducted
-      laboratory characterization of dedicated physical implementations of
-      internetworking functions. Therefore, this memo begins to describe the
-      additional considerations when virtual switches are implemented in
-      general-purpose hardware. The expanded tests and benchmarks are also
-      influenced by the OPNFV mission to support virtualization of the "telco"
-      infrastructure.</t>
-    </abstract>
-
-    <note title="Requirements Language">
-      <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
-      "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
-      document are to be interpreted as described in <xref
-      target="RFC2119">RFC 2119</xref>.</t>
-
-      <t/>
-    </note>
-  </front>
-
-  <middle>
-    <section title="Introduction">
-      <t>Benchmarking Methodology Working Group (BMWG) has traditionally
-      conducted laboratory characterization of dedicated physical
-      implementations of internetworking functions. The Black-box Benchmarks
-      of Throughput, Latency, Forwarding Rates and others have served our
-      industry for many years. Now, Network Function Virtualization (NFV) has
-      the goal to transform how internetwork functions are implemented, and
-      therefore has garnered much attention.</t>
-
-      <t>This memo summarizes the progress of the Open Platform for NFV
-      (OPNFV) project on virtual switch performance characterization,
-      "VSWITCHPERF", through the Brahmaputra (second) release <xref
-      target="BrahRel"/>. This project intends to build on the current and
-      completed work of the Benchmarking Methodology Working Group in IETF, by
-      referencing existing literature. For example, currently the most often
-      referenced RFC is <xref target="RFC2544"/> (which depends on <xref
-      target="RFC1242"/>) and foundation of the benchmarking work in OPNFV is
-      common and strong.</t>
-
-      <t>See
-      https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases
-      for more background, and the OPNFV website for general information:
-      https://www.opnfv.org/</t>
-
-      <t>The authors note that OPNFV distinguishes itself from other open
-      source compute and networking projects through its emphasis on existing
-      "telco" services as opposed to cloud-computing. There are many ways in
-      which telco requirements have different emphasis on performance
-      dimensions when compared to cloud computing: support for and transfer of
-      isochronous media streams is one example.</t>
-
-      <t>Note also that the move to NFV Infrastructure has resulted in many
-      new benchmarking initiatives across the industry. The authors are
-      currently doing their best to maintain alignment with many other
-      projects, and this Internet Draft is one part of the efforts. We
-      acknowledge the early work in <xref
-      target="I-D.huang-bmwg-virtual-network-performance"/>, and useful
-      discussion with the authors.</t>
-    </section>
-
-    <section title="Scope">
-      <t>The primary purpose and scope of the memo is to inform the industry
-      of work-in-progress that builds on the body of extensive BMWG literature
-      and experience, and describe the extensions needed for benchmarking
-      virtual switches. Inital feedback indicates that many of these
-      extensions may be applicable beyond the current scope (to hardware
-      switches in the NFV Infrastructure and to virtual routers, for example).
-      Additionally, this memo serves as a vehicle to include more detail and
-      commentary from BMWG and other Open Source communities, under BMWG's
-      chartered work to characterize the NFV Infrastructure (a virtual switch
-      is an important aspect of that infrastructure).</t>
-    </section>
-
-    <section title="Benchmarking Considerations">
-      <t>This section highlights some specific considerations (from <xref
-      target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual
-      switches. The OPNFV project is sharing its present view on these areas,
-      as they develop their specifications in the Level Test Design (LTD)
-      document.</t>
-
-      <section title="Comparison with Physical Network Functions">
-        <t>To compare the performance of virtual designs and implementations
-        with their physical counterparts, identical benchmarks are needed.
-        BMWG has developed specifications for many network functions this memo
-        re-uses existing benchmarks through references, and expands them
-        during development of new methods. A key configuration aspect is the
-        number of parallel cores required to achieve comparable performance
-        with a given physical device, or whether some limit of scale was
-        reached before the cores could achieve the comparable level.</t>
-
-        <t>It's unlikely that the virtual switch will be the only application
-        running on the SUT, so CPU utilization, Cache utilization, and Memory
-        footprint should also be recorded for the virtual implementations of
-        internetworking functions.</t>
-      </section>
-
-      <section title="Continued Emphasis on Black-Box Benchmarks">
-        <t>External observations remain essential as the basis for Benchmarks.
-        Internal observations with fixed specification and interpretation will
-        be provided in parallel to assist the development of operations
-        procedures when the technology is deployed.</t>
-      </section>
-
-      <section title="New Configuration Parameters">
-        <t>A key consideration when conducting any sort of benchmark is trying
-        to ensure the consistency and repeatability of test results. When
-        benchmarking the performance of a vSwitch there are many factors that
-        can affect the consistency of results, one key factor is matching the
-        various hardware and software details of the SUT. This section lists
-        some of the many new parameters which this project believes are
-        critical to report in order to achieve repeatability.</t>
-
-        <t>Hardware details including:</t>
-
-        <t><list style="symbols">
-            <t>Platform details</t>
-
-            <t>Processor details</t>
-
-            <t>Memory information (type and size)</t>
-
-            <t>Number of enabled cores</t>
-
-            <t>Number of cores used for the test</t>
-
-            <t>Number of physical NICs, as well as their details
-            (manufacturer, versions, type and the PCI slot they are plugged
-            into)</t>
-
-            <t>NIC interrupt configuration</t>
-
-            <t>BIOS version, release date and any configurations that were
-            modified</t>
-
-            <t>CPU microcode level</t>
-
-            <t>Memory DIMM configurations (quad rank performance may not be
-            the same as dual rank) in size, freq and slot locations</t>
-
-            <t>PCI configuration parameters (payload size, early ack
-            option...)</t>
-
-            <t>Power management at all levels (ACPI sleep states, processor
-            package, OS...)</t>
-          </list>Software details including:</t>
-
-        <t><list style="symbols">
-            <t>OS parameters and behavior (text vs graphical no one typing at
-            the console on one system)</t>
-
-            <t>OS version (for host and VNF)</t>
-
-            <t>Kernel version (for host and VNF)</t>
-
-            <t>GRUB boot parameters (for host and VNF)</t>
-
-            <t>Hypervisor details (Type and version)</t>
-
-            <t>Selected vSwitch, version number or commit id used</t>
-
-            <t>vSwitch launch command line if it has been parameterised</t>
-
-            <t>Memory allocation to the vSwitch</t>
-
-            <t>which NUMA node it is using, and how many memory channels</t>
-
-            <t>DPDK or any other SW dependency version number or commit id
-            used</t>
-
-            <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t>
-
-            <t>VM storage type: snapshot/independent persistent/independent
-            non-persistent</t>
-
-            <t>Number of VMs</t>
-
-            <t>Number of Virtual NICs (vNICs), versions, type and driver</t>
-
-            <t>Number of virtual CPUs and their core affinity on the host</t>
-
-            <t>Number vNIC interrupt configuration</t>
-
-            <t>Thread affinitization for the applications (including the
-            vSwitch itself) on the host</t>
-
-            <t>Details of Resource isolation, such as CPUs designated for
-            Host/Kernel (isolcpu) and CPUs designated for specific processes
-            (taskset). - Test duration. - Number of flows.</t>
-          </list></t>
-
-        <t>Test Traffic Information:<list style="symbols">
-            <t>Traffic type - UDP, TCP, IMIX / Other</t>
-
-            <t>Packet Sizes</t>
-
-            <t>Deployment Scenario</t>
-          </list></t>
-
-        <t/>
-      </section>
-
-      <section title="Flow classification">
-        <t>Virtual switches group packets into flows by processing and
-        matching particular packet or frame header information, or by matching
-        packets based on the input ports. Thus a flow can be thought of a
-        sequence of packets that have the same set of header field values
-        (5-tuple) or have arrived on the same port. Performance results can
-        vary based on the parameters the vSwitch uses to match for a flow. The
-        recommended flow classification parameters for any vSwitch performance
-        tests are: the input port, the source IP address, the destination IP
-        address and the Ethernet protocol type field. It is essential to
-        increase the flow timeout time on a vSwitch before conducting any
-        performance tests that do not measure the flow setup time. Normally
-        the first packet of a particular stream will install the flow in the
-        virtual switch which adds an additional latency, subsequent packets of
-        the same flow are not subject to this latency if the flow is already
-        installed on the vSwitch.</t>
-      </section>
-
-      <section title="Benchmarks using Baselines with Resource Isolation">
-        <t>This outline describes measurement of baseline with isolated
-        resources at a high level, which is the intended approach at this
-        time.</t>
-
-        <t><list style="numbers">
-            <t>Baselines: <list style="symbols">
-                <t>Optional: Benchmark platform forwarding capability without
-                a vswitch or VNF for at least 72 hours (serves as a means of
-                platform validation and a means to obtain the base performance
-                for the platform in terms of its maximum forwarding rate and
-                latency). <figure>
-                    <preamble>Benchmark platform forwarding
-                    capability</preamble>
-
-                    <artwork align="right"><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |          Simple Forwarding App           |   |  Host
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmark VNF forwarding capability with direct
-                connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72
-                hours (serves as a means of VNF validation and a means to
-                obtain the base performance for the VNF in terms of its
-                maximum forwarding rate and latency). The metrics gathered
-                from this test will serve as a key comparison point for
-                vSwitch bypass technologies performance and vSwitch
-                performance. <figure align="right">
-                    <preamble>Benchmark VNF forwarding capability</preamble>
-
-                    <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |                 VNF                      |   |   |
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |          Passthrough/SR-IOV              |   |  Host
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmarking with isolated resources alone, with other
-                resources (both HW&amp;SW) disabled Example, vSw and VM are
-                SUT</t>
-
-                <t>Benchmarking with isolated resources alone, leaving some
-                resources unused</t>
-
-                <t>Benchmark with isolated resources and all resources
-                occupied</t>
-              </list></t>
-
-            <t>Next Steps<list style="symbols">
-                <t>Limited sharing</t>
-
-                <t>Production scenarios</t>
-
-                <t>Stressful scenarios</t>
-              </list></t>
-          </list></t>
-      </section>
-    </section>
-
-    <section title="VSWITCHPERF Specification Summary">
-      <t>The overall specification in preparation is referred to as a Level
-      Test Design (LTD) document, which will contain a suite of performance
-      tests. The base performance tests in the LTD are based on the
-      pre-existing specifications developed by BMWG to test the performance of
-      physical switches. These specifications include:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2544"/> Benchmarking Methodology for Network
-          Interconnect Devices</t>
-
-          <t><xref target="RFC2889"/> Benchmarking Methodology for LAN
-          Switching</t>
-
-          <t><xref target="RFC6201"/> Device Reset Characterization</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t>Some of the above/newer RFCs are being applied in benchmarking for
-      the first time, and represent a development challenge for test equipment
-      developers. Fortunately, many members of the testing system community
-      have engaged on the VSPERF project, including an open source test
-      system.</t>
-
-      <t>In addition to this, the LTD also re-uses the terminology defined
-      by:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2285"/> Benchmarking Terminology for LAN
-          Switching Devices</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t/>
-
-      <t>Specifications to be included in future updates of the LTD
-      include:<list style="symbols">
-          <t><xref target="RFC3918"/> Methodology for IP Multicast
-          Benchmarking</t>
-
-          <t><xref target="RFC4737"/> Packet Reordering Metrics</t>
-        </list></t>
-
-      <t>As one might expect, the most fundamental internetworking
-      characteristics of Throughput and Latency remain important when the
-      switch is virtualized, and these benchmarks figure prominently in the
-      specification.</t>
-
-      <t>When considering characteristics important to "telco" network
-      functions, we must begin to consider additional performance metrics. In
-      this case, the project specifications have referenced metrics from the
-      IETF IP Performance Metrics (IPPM) literature. This means that the <xref
-      target="RFC2544"/> test of Latency is replaced by measurement of a
-      metric derived from IPPM's <xref target="RFC2679"/>, where a set of
-      statistical summaries will be provided (mean, max, min, etc.). Further
-      metrics planned to be benchmarked include packet delay variation as
-      defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT
-      availability, DUT capacity and packet loss in long term testing at
-      Throughput level, where some low-level of background loss may be present
-      and characterized.</t>
-
-      <t>Tests have been (or will be) designed to collect the metrics
-      below:</t>
-
-      <t><list style="symbols">
-          <t>Throughput Tests to measure the maximum forwarding rate (in
-          frames per second or fps) and bit rate (in Mbps) for a constant load
-          (as defined by <xref target="RFC1242"/>) without traffic loss.</t>
-
-          <t>Packet and Frame Delay Distribution Tests to measure average, min
-          and max packet and frame delay for constant loads.</t>
-
-          <t>Packet Delay Tests to understand latency distribution for
-          different packet sizes and over an extended test run to uncover
-          outliers.</t>
-
-          <t>Scalability Tests to understand how the virtual switch performs
-          as the number of flows, active ports, complexity of the forwarding
-          logic&rsquo;s configuration&hellip; it has to deal with
-          increases.</t>
-
-          <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer
-          performance, i.e. how fast systems can send and receive data through
-          the switch.</t>
-
-          <t>Control Path and Datapath Coupling Tests, to understand how
-          closely coupled the datapath and the control path are as well as the
-          effect of this coupling on the performance of the DUT (example:
-          delay of the initial packet of a flow).</t>
-
-          <t>CPU and Memory Consumption Tests to understand the virtual
-          switch&rsquo;s footprint on the system, usually conducted as
-          auxiliary measurements with benchmarks above. They include: CPU
-          utilization, Cache utilization and Memory footprint.</t>
-
-          <t>The so-called "Soak" tests, where the selected test is conducted
-          over a long period of time (with an ideal duration of 24 hours, and
-          at least 6 hours). The purpose of soak tests is to capture transient
-          changes in performance which may occur due to infrequent processes
-          or the low probability coincidence of two or more processes. The
-          performance must be evaluated periodically during continuous
-          testing, and this results in use of <xref target="RFC2889"/> Frame
-          Rate metrics instead of <xref target="RFC2544"/> Throughput (which
-          requires stopping traffic to allow time for all traffic to exit
-          internal queues).</t>
-        </list></t>
-
-      <t>Future/planned test specs include:<list style="symbols">
-          <t>Request/Response Performance Tests (TCP, UDP) which measure the
-          transaction rate through the switch.</t>
-
-          <t>Noisy Neighbour Tests, to understand the effects of resource
-          sharing on the performance of a virtual switch.</t>
-
-          <t>Tests derived from examination of ETSI NFV Draft GS IFA003
-          requirements <xref target="IFA003"/> on characterization of
-          acceleration technologies applied to vswitches.</t>
-        </list>The flexibility of deployment of a virtual switch within a
-      network means that the BMWG IETF existing literature needs to be used to
-      characterize the performance of a switch in various deployment
-      scenarios. The deployment scenarios under consideration include:</t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to physical
-          port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |              +--------------------+              |   |
- |              |                    |              |   |
- |              |                    v              |   |  Host
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure></t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to physical port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                  :        |   |
- |       |                                  |        |   |  Guest
- |       :                                  v        |   |
- |   +---------------+           +---------------+   |   |
- |   | logical port 0|           | logical port 1|   |   |
- +---+---------------+-----------+---------------+---+ __|
-         ^                                  :
-         |                                  |
-         :                                  v         __
- +---+---------------+----------+---------------+---+   |
- |   | logical port 0|          | logical port 1|   |   |
- |   +---------------+          +---------------+   |   |
- |       ^                                  :       |   |
- |       |                                  |       |   |  Host
- |       :                                  v       |   |
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |       ^       |      |  |       ^       |      |  |
- |       |       v      |  |       |       v      |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |   0       1   |  |  |   |   0       1   |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-         ^       :                 ^       :
-         |       |                 |       |
-         :       v                 :       v       _
- +---+---------------+---------+---------------+--+ |
- |   |   0       1   |         |   3       4   |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |       ^       |                 ^       |      | |  Host
- |       |       |-----------------|       v      | |
- |   +--------------+          +--------------+   | |
- |   |   phy ports  | vSwitch  |   phy ports  |   | |
- +---+--------------+----------+--------------+---+_|
-         ^                                 :
-         |                                 |
-         :                                 v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                           |   |
- |       |                                           |   |  Guest
- |       :                                           |   |
- |   +---------------+                               |   |
- |   | logical port 0|                               |   |
- +---+---------------+-------------------------------+ __|
-         ^
-         |
-         :                                            __
- +---+---------------+------------------------------+   |
- |   | logical port 0|                              |   |
- |   +---------------+                              |   |
- |       ^                                          |   |
- |       |                                          |   |  Host
- |       :                                          |   |
- |   +--------------+                               |   |
- |   |   phy port   |  vSwitch                      |   |
- +---+--------------+------------ -------------- ---+ __|
-            ^
-            |
-            :
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |                                          :        |   |
- |                                          |        |   |  Guest
- |                                          v        |   |
- |                               +---------------+   |   |
- |                               | logical port  |   |   |
- +-------------------------------+---------------+---+ __|
-                                            :
-                                            |
-                                            v         __
- +------------------------------+---------------+---+   |
- |                              | logical port  |   |   |
- |                              +---------------+   |   |
- |                                          :       |   |
- |                                          |       |   |  Host
- |                                          v       |   |
- |                               +--------------+   |   |
- |                     vSwitch   |   phy port   |   |   |
- +-------------------------------+--------------+---+ __|
-                                        :
-                                        |
-                                        v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |              |       |  |       ^              |  |
- |              v       |  |       |              |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |           0   |  |  |   |   0           |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-                 :                 ^
-                 |                 |
-                 v                 :               _
- +---+---------------+---------+---------------+--+ |
- |   |           1   |         |   1           |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |               |                 ^              | |  Host
- |               L-----------------+              | |
- |                                                | |
- |                    vSwitch                     | |
- +------------------------------------------------+_|]]></artwork>
-        </figure></t>
-
-      <t>A set of Deployment Scenario figures is available on the VSPERF Test
-      Methodology Wiki page <xref target="TestTopo"/>.</t>
-    </section>
-
-    <section title="3x3 Matrix Coverage">
-      <t>This section organizes the many existing test specifications into the
-      "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>).
-      Because the LTD specification ID names are quite long, this section is
-      organized into lists for each occupied cell of the matrix (not all are
-      occupied, also the matrix has grown to 3x4 to accommodate scale metrics
-      when displaying the coverage of many metrics/benchmarks). The current
-      version of the LTD specification is available <xref target="LTD"/>.</t>
-
-      <t>The tests listed below assess the activation of paths in the data
-      plane, rather than the control plane.</t>
-
-      <t>A complete list of tests with short summaries is available on the
-      VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t>
-
-      <section title="Speed of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressLearningRate</t>
-
-            <t>PacketLatency.InitialPacketProcessingLatency</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Activation section">
-        <t><list style="symbols">
-            <t>CPDP.Coupling.Flow.Addition</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Activation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.SystemRecoveryTime</t>
-
-            <t>Throughput.RFC2544.ResetTime</t>
-          </list></t>
-      </section>
-
-      <section title="Scale of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressCachingCapacity</t>
-          </list></t>
-      </section>
-
-      <section title="Speed of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.PacketLossRate</t>
-
-            <t>CPU.RFC2544.0PacketLoss</t>
-
-            <t>Throughput.RFC2544.PacketLossRateFrameModification</t>
-
-            <t>Throughput.RFC2544.BackToBackFrames</t>
-
-            <t>Throughput.RFC2889.MaxForwardingRate</t>
-
-            <t>Throughput.RFC2889.ForwardPressure</t>
-
-            <t>Throughput.RFC2889.BroadcastFrameForwarding</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.ErrorFramesFiltering</t>
-
-            <t>Throughput.RFC2544.Profile</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.Soak</t>
-
-            <t>Throughput.RFC2889.SoakFrameModification</t>
-
-            <t>PacketDelayVariation.RFC3393.Soak</t>
-          </list></t>
-      </section>
-
-      <section title="Scalability of Operation">
-        <t><list style="symbols">
-            <t>Scalability.RFC2544.0PacketLoss</t>
-
-            <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t>
-          </list></t>
-      </section>
-
-      <section title="Summary">
-        <t><figure>
-            <artwork><![CDATA[|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|               |   SPEED     |  ACCURACY  |  RELIABILITY  |    SCALE    |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Activation   |      X      |     X      |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Operation    |      X      |      X     |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-| De-activation |             |            |               |             |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|]]></artwork>
-          </figure></t>
-      </section>
-    </section>
-
-    <section title="Security Considerations">
-      <t>Benchmarking activities as described in this memo are limited to
-      technology characterization of a Device Under Test/System Under Test
-      (DUT/SUT) using controlled stimuli in a laboratory environment, with
-      dedicated address space and the constraints specified in the sections
-      above.</t>
-
-      <t>The benchmarking network topology will be an independent test setup
-      and MUST NOT be connected to devices that may forward the test traffic
-      into a production network, or misroute traffic to the test management
-      network.</t>
-
-      <t>Further, benchmarking is performed on a "black-box" basis, relying
-      solely on measurements observable external to the DUT/SUT.</t>
-
-      <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for
-      benchmarking purposes. Any implications for network security arising
-      from the DUT/SUT SHOULD be identical in the lab and in production
-      networks.</t>
-    </section>
-
-    <section anchor="IANA" title="IANA Considerations">
-      <t>No IANA Action is requested at this time.</t>
-    </section>
-
-    <section title="Acknowledgements">
-      <t>The authors appreciate and acknowledge comments from Scott Bradner,
-      Marius Georgescu, Ramki Krishnan, Doug Montgomery, Martin Klozik,
-      Christian Trautman, and others for their reviews.</t>
-    </section>
-  </middle>
-
-  <back>
-    <references title="Normative References">
-      <?rfc ?>
-
-      <?rfc include="reference.RFC.2119"?>
-
-      <?rfc ?>
-
-      <?rfc include="reference.RFC.2330"?>
-
-      <?rfc include='reference.RFC.2544'?>
-
-      <?rfc include="reference.RFC.2679"?>
-
-      <?rfc include='reference.RFC.2680'?>
-
-      <?rfc include='reference.RFC.3393'?>
-
-      <?rfc include='reference.RFC.3432'?>
-
-      <?rfc include='reference.RFC.2681'?>
-
-      <?rfc include='reference.RFC.5905'?>
-
-      <?rfc include='reference.RFC.4689'?>
-
-      <?rfc include='reference.RFC.4737'?>
-
-      <?rfc include='reference.RFC.5357'?>
-
-      <?rfc include='reference.RFC.2889'?>
-
-      <?rfc include='reference.RFC.3918'?>
-
-      <?rfc include='reference.RFC.6201'?>
-
-      <?rfc include='reference.RFC.2285'?>
-
-      <reference anchor="NFV.PER001">
-        <front>
-          <title>Network Function Virtualization: Performance and Portability
-          Best Practices</title>
-
-          <author fullname="ETSI NFV" initials="" surname="">
-            <organization/>
-          </author>
-
-          <date month="June" year="2014"/>
-        </front>
-
-        <seriesInfo name="Group Specification"
-                    value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/>
-
-        <format type="PDF"/>
-      </reference>
-    </references>
-
-    <references title="Informative References">
-      <?rfc include='reference.RFC.1242'?>
-
-      <?rfc include='reference.RFC.5481'?>
-
-      <?rfc include='reference.RFC.6049'?>
-
-      <?rfc include='reference.RFC.6248'?>
-
-      <?rfc include='reference.RFC.6390'?>
-
-      <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?>
-
-      <?rfc include='reference.I-D.huang-bmwg-virtual-network-performance'?>
-
-      <reference anchor="TestTopo">
-        <front>
-          <title>Test Topologies
-          https://wiki.opnfv.org/vsperf/test_methodology</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="LTDoverV">
-        <front>
-          <title>LTD Test Spec Overview
-          https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="LTD">
-        <front>
-          <title>LTD Test Specification
-          http://artifacts.opnfv.org/vswitchperf/docs/requirements/index.html</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="BrahRel">
-        <front>
-          <title>Brahmaputra, Second OPNFV Release
-          https://www.opnfv.org/brahmaputra</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="IFA003">
-        <front>
-          <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-    </references>
-  </back>
-</rfc>
diff --git a/docs/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-01.xml b/docs/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-01.xml
deleted file mode 100644
index c8a3d99b..00000000
--- a/docs/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-01.xml
+++ /dev/null
@@ -1,1027 +0,0 @@
-<?xml version="1.0" encoding="US-ASCII"?>
-<!DOCTYPE rfc SYSTEM "rfc2629.dtd">
-<?rfc toc="yes"?>
-<?rfc tocompact="yes"?>
-<?rfc tocdepth="3"?>
-<?rfc tocindent="yes"?>
-<?rfc symrefs="yes"?>
-<?rfc sortrefs="yes"?>
-<?rfc comments="yes"?>
-<?rfc inline="yes"?>
-<?rfc compact="yes"?>
-<?rfc subcompact="no"?>
-<rfc category="info" docName="draft-ietf-bmwg-vswitch-opnfv-01"
-     ipr="trust200902">
-  <front>
-    <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in
-    OPNFV</title>
-
-    <author fullname="Maryam Tahhan" initials="M." surname="Tahhan">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>maryam.tahhan@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>billy.o.mahony@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Al Morton" initials="A." surname="Morton">
-      <organization>AT&amp;T Labs</organization>
-
-      <address>
-        <postal>
-          <street>200 Laurel Avenue South</street>
-
-          <city>Middletown,</city>
-
-          <region>NJ</region>
-
-          <code>07748</code>
-
-          <country>USA</country>
-        </postal>
-
-        <phone>+1 732 420 1571</phone>
-
-        <facsimile>+1 732 368 1192</facsimile>
-
-        <email>acmorton@att.com</email>
-
-        <uri>http://home.comcast.net/~acmacm/</uri>
-      </address>
-    </author>
-
-    <date day="10" month="October" year="2016"/>
-
-    <abstract>
-      <t>This memo describes the progress of the Open Platform for NFV (OPNFV)
-      project on virtual switch performance "VSWITCHPERF". This project
-      intends to build on the current and completed work of the Benchmarking
-      Methodology Working Group in IETF, by referencing existing literature.
-      The Benchmarking Methodology Working Group has traditionally conducted
-      laboratory characterization of dedicated physical implementations of
-      internetworking functions. Therefore, this memo begins to describe the
-      additional considerations when virtual switches are implemented in
-      general-purpose hardware. The expanded tests and benchmarks are also
-      influenced by the OPNFV mission to support virtualization of the "telco"
-      infrastructure.</t>
-    </abstract>
-
-    <note title="Requirements Language">
-      <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
-      "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
-      document are to be interpreted as described in <xref
-      target="RFC2119">RFC 2119</xref>.</t>
-
-      <t/>
-    </note>
-  </front>
-
-  <middle>
-    <section title="Introduction">
-      <t>Benchmarking Methodology Working Group (BMWG) has traditionally
-      conducted laboratory characterization of dedicated physical
-      implementations of internetworking functions. The Black-box Benchmarks
-      of Throughput, Latency, Forwarding Rates and others have served our
-      industry for many years. Now, Network Function Virtualization (NFV) has
-      the goal to transform how internetwork functions are implemented, and
-      therefore has garnered much attention.</t>
-
-      <t>This memo summarizes the progress of the Open Platform for NFV
-      (OPNFV) project on virtual switch performance characterization,
-      "VSWITCHPERF", through the Brahmaputra (second) release <xref
-      target="BrahRel"/>. This project intends to build on the current and
-      completed work of the Benchmarking Methodology Working Group in IETF, by
-      referencing existing literature. For example, currently the most often
-      referenced RFC is <xref target="RFC2544"/> (which depends on <xref
-      target="RFC1242"/>) and foundation of the benchmarking work in OPNFV is
-      common and strong.</t>
-
-      <t>See
-      https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases
-      for more background, and the OPNFV website for general information:
-      https://www.opnfv.org/</t>
-
-      <t>The authors note that OPNFV distinguishes itself from other open
-      source compute and networking projects through its emphasis on existing
-      "telco" services as opposed to cloud-computing. There are many ways in
-      which telco requirements have different emphasis on performance
-      dimensions when compared to cloud computing: support for and transfer of
-      isochronous media streams is one example.</t>
-
-      <t>Note also that the move to NFV Infrastructure has resulted in many
-      new benchmarking initiatives across the industry. The authors are
-      currently doing their best to maintain alignment with many other
-      projects, and this Internet Draft is one part of the efforts. We
-      acknowledge the early work in <xref
-      target="I-D.huang-bmwg-virtual-network-performance"/>, and useful
-      discussion with the authors.</t>
-    </section>
-
-    <section title="Scope">
-      <t>The primary purpose and scope of the memo is to inform the industry
-      of work-in-progress that builds on the body of extensive BMWG literature
-      and experience, and describe the extensions needed for benchmarking
-      virtual switches. Inital feedback indicates that many of these
-      extensions may be applicable beyond the current scope (to hardware
-      switches in the NFV Infrastructure and to virtual routers, for example).
-      Additionally, this memo serves as a vehicle to include more detail and
-      commentary from BMWG and other Open Source communities, under BMWG's
-      chartered work to characterize the NFV Infrastructure (a virtual switch
-      is an important aspect of that infrastructure).</t>
-
-      <t>The benchmarking covered in this memo should be applicable to many
-      types of vswitches, and remain vswitch-agnostic to great degree. There
-      has been no attempt to track and test all features of any specific
-      vswitch implementation.</t>
-    </section>
-
-    <section title="Benchmarking Considerations">
-      <t>This section highlights some specific considerations (from <xref
-      target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual
-      switches. The OPNFV project is sharing its present view on these areas,
-      as they develop their specifications in the Level Test Design (LTD)
-      document.</t>
-
-      <section title="Comparison with Physical Network Functions">
-        <t>To compare the performance of virtual designs and implementations
-        with their physical counterparts, identical benchmarks are needed.
-        BMWG has developed specifications for many network functions this memo
-        re-uses existing benchmarks through references, and expands them
-        during development of new methods. A key configuration aspect is the
-        number of parallel cores required to achieve comparable performance
-        with a given physical device, or whether some limit of scale was
-        reached before the cores could achieve the comparable level.</t>
-
-        <t>It's unlikely that the virtual switch will be the only application
-        running on the SUT, so CPU utilization, Cache utilization, and Memory
-        footprint should also be recorded for the virtual implementations of
-        internetworking functions.</t>
-      </section>
-
-      <section title="Continued Emphasis on Black-Box Benchmarks">
-        <t>External observations remain essential as the basis for Benchmarks.
-        Internal observations with fixed specification and interpretation will
-        be provided in parallel to assist the development of operations
-        procedures when the technology is deployed.</t>
-      </section>
-
-      <section title="New Configuration Parameters">
-        <t>A key consideration when conducting any sort of benchmark is trying
-        to ensure the consistency and repeatability of test results. When
-        benchmarking the performance of a vSwitch there are many factors that
-        can affect the consistency of results, one key factor is matching the
-        various hardware and software details of the SUT. This section lists
-        some of the many new parameters which this project believes are
-        critical to report in order to achieve repeatability.</t>
-
-        <t>Hardware details including:</t>
-
-        <t><list style="symbols">
-            <t>Platform details</t>
-
-            <t>Processor details</t>
-
-            <t>Memory information (type and size)</t>
-
-            <t>Number of enabled cores</t>
-
-            <t>Number of cores used for the test</t>
-
-            <t>Number of physical NICs, as well as their details
-            (manufacturer, versions, type and the PCI slot they are plugged
-            into)</t>
-
-            <t>NIC interrupt configuration</t>
-
-            <t>BIOS version, release date and any configurations that were
-            modified</t>
-
-            <t>CPU microcode level</t>
-
-            <t>Memory DIMM configurations (quad rank performance may not be
-            the same as dual rank) in size, freq and slot locations</t>
-
-            <t>PCI configuration parameters (payload size, early ack
-            option...)</t>
-
-            <t>Power management at all levels (ACPI sleep states, processor
-            package, OS...)</t>
-          </list>Software details including:</t>
-
-        <t><list style="symbols">
-            <t>OS parameters and behavior (text vs graphical no one typing at
-            the console on one system)</t>
-
-            <t>OS version (for host and VNF)</t>
-
-            <t>Kernel version (for host and VNF)</t>
-
-            <t>GRUB boot parameters (for host and VNF)</t>
-
-            <t>Hypervisor details (Type and version)</t>
-
-            <t>Selected vSwitch, version number or commit id used</t>
-
-            <t>vSwitch launch command line if it has been parameterised</t>
-
-            <t>Memory allocation to the vSwitch</t>
-
-            <t>which NUMA node it is using, and how many memory channels</t>
-
-            <t>DPDK or any other SW dependency version number or commit id
-            used</t>
-
-            <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t>
-
-            <t>VM storage type: snapshot/independent persistent/independent
-            non-persistent</t>
-
-            <t>Number of VMs</t>
-
-            <t>Number of Virtual NICs (vNICs), versions, type and driver</t>
-
-            <t>Number of virtual CPUs and their core affinity on the host</t>
-
-            <t>Number vNIC interrupt configuration</t>
-
-            <t>Thread affinitization for the applications (including the
-            vSwitch itself) on the host</t>
-
-            <t>Details of Resource isolation, such as CPUs designated for
-            Host/Kernel (isolcpu) and CPUs designated for specific processes
-            (taskset). - Test duration. - Number of flows.</t>
-          </list></t>
-
-        <t>Test Traffic Information:<list style="symbols">
-            <t>Traffic type - UDP, TCP, IMIX / Other</t>
-
-            <t>Packet Sizes</t>
-
-            <t>Deployment Scenario</t>
-          </list></t>
-
-        <t/>
-      </section>
-
-      <section title="Flow classification">
-        <t>Virtual switches group packets into flows by processing and
-        matching particular packet or frame header information, or by matching
-        packets based on the input ports. Thus a flow can be thought of a
-        sequence of packets that have the same set of header field values
-        (5-tuple) or have arrived on the same port. Performance results can
-        vary based on the parameters the vSwitch uses to match for a flow. The
-        recommended flow classification parameters for any vSwitch performance
-        tests are: the input port, the source IP address, the destination IP
-        address and the Ethernet protocol type field. It is essential to
-        increase the flow timeout time on a vSwitch before conducting any
-        performance tests that do not measure the flow setup time. Normally
-        the first packet of a particular stream will install the flow in the
-        virtual switch which adds an additional latency, subsequent packets of
-        the same flow are not subject to this latency if the flow is already
-        installed on the vSwitch.</t>
-      </section>
-
-      <section title="Benchmarks using Baselines with Resource Isolation">
-        <t>This outline describes measurement of baseline with isolated
-        resources at a high level, which is the intended approach at this
-        time.</t>
-
-        <t><list style="numbers">
-            <t>Baselines: <list style="symbols">
-                <t>Optional: Benchmark platform forwarding capability without
-                a vswitch or VNF for at least 72 hours (serves as a means of
-                platform validation and a means to obtain the base performance
-                for the platform in terms of its maximum forwarding rate and
-                latency). <figure>
-                    <preamble>Benchmark platform forwarding
-                    capability</preamble>
-
-                    <artwork align="right"><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |          Simple Forwarding App           |   |  Host
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmark VNF forwarding capability with direct
-                connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72
-                hours (serves as a means of VNF validation and a means to
-                obtain the base performance for the VNF in terms of its
-                maximum forwarding rate and latency). The metrics gathered
-                from this test will serve as a key comparison point for
-                vSwitch bypass technologies performance and vSwitch
-                performance. <figure align="right">
-                    <preamble>Benchmark VNF forwarding capability</preamble>
-
-                    <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |                 VNF                      |   |   |
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |          Passthrough/SR-IOV              |   |  Host
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmarking with isolated resources alone, with other
-                resources (both HW&amp;SW) disabled Example, vSw and VM are
-                SUT</t>
-
-                <t>Benchmarking with isolated resources alone, leaving some
-                resources unused</t>
-
-                <t>Benchmark with isolated resources and all resources
-                occupied</t>
-              </list></t>
-
-            <t>Next Steps<list style="symbols">
-                <t>Limited sharing</t>
-
-                <t>Production scenarios</t>
-
-                <t>Stressful scenarios</t>
-              </list></t>
-          </list></t>
-      </section>
-    </section>
-
-    <section title="VSWITCHPERF Specification Summary">
-      <t>The overall specification in preparation is referred to as a Level
-      Test Design (LTD) document, which will contain a suite of performance
-      tests. The base performance tests in the LTD are based on the
-      pre-existing specifications developed by BMWG to test the performance of
-      physical switches. These specifications include:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2544"/> Benchmarking Methodology for Network
-          Interconnect Devices</t>
-
-          <t><xref target="RFC2889"/> Benchmarking Methodology for LAN
-          Switching</t>
-
-          <t><xref target="RFC6201"/> Device Reset Characterization</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t>Some of the above/newer RFCs are being applied in benchmarking for
-      the first time, and represent a development challenge for test equipment
-      developers. Fortunately, many members of the testing system community
-      have engaged on the VSPERF project, including an open source test
-      system.</t>
-
-      <t>In addition to this, the LTD also re-uses the terminology defined
-      by:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2285"/> Benchmarking Terminology for LAN
-          Switching Devices</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t/>
-
-      <t>Specifications to be included in future updates of the LTD
-      include:<list style="symbols">
-          <t><xref target="RFC3918"/> Methodology for IP Multicast
-          Benchmarking</t>
-
-          <t><xref target="RFC4737"/> Packet Reordering Metrics</t>
-        </list></t>
-
-      <t>As one might expect, the most fundamental internetworking
-      characteristics of Throughput and Latency remain important when the
-      switch is virtualized, and these benchmarks figure prominently in the
-      specification.</t>
-
-      <t>When considering characteristics important to "telco" network
-      functions, we must begin to consider additional performance metrics. In
-      this case, the project specifications have referenced metrics from the
-      IETF IP Performance Metrics (IPPM) literature. This means that the <xref
-      target="RFC2544"/> test of Latency is replaced by measurement of a
-      metric derived from IPPM's <xref target="RFC2679"/>, where a set of
-      statistical summaries will be provided (mean, max, min, etc.). Further
-      metrics planned to be benchmarked include packet delay variation as
-      defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT
-      availability, DUT capacity and packet loss in long term testing at
-      Throughput level, where some low-level of background loss may be present
-      and characterized.</t>
-
-      <t>Tests have been (or will be) designed to collect the metrics
-      below:</t>
-
-      <t><list style="symbols">
-          <t>Throughput Tests to measure the maximum forwarding rate (in
-          frames per second or fps) and bit rate (in Mbps) for a constant load
-          (as defined by <xref target="RFC1242"/>) without traffic loss.</t>
-
-          <t>Packet and Frame Delay Distribution Tests to measure average, min
-          and max packet and frame delay for constant loads.</t>
-
-          <t>Packet Delay Tests to understand latency distribution for
-          different packet sizes and over an extended test run to uncover
-          outliers.</t>
-
-          <t>Scalability Tests to understand how the virtual switch performs
-          as the number of flows, active ports, complexity of the forwarding
-          logic&rsquo;s configuration&hellip; it has to deal with
-          increases.</t>
-
-          <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer
-          performance, i.e. how fast systems can send and receive data through
-          the switch.</t>
-
-          <t>Control Path and Datapath Coupling Tests, to understand how
-          closely coupled the datapath and the control path are as well as the
-          effect of this coupling on the performance of the DUT (example:
-          delay of the initial packet of a flow).</t>
-
-          <t>CPU and Memory Consumption Tests to understand the virtual
-          switch&rsquo;s footprint on the system, usually conducted as
-          auxiliary measurements with benchmarks above. They include: CPU
-          utilization, Cache utilization and Memory footprint.</t>
-
-          <t>The so-called "Soak" tests, where the selected test is conducted
-          over a long period of time (with an ideal duration of 24 hours, but
-          only long enough to determine that stability issues exist when
-          found; there is no requirement to continue a test when a DUT
-          exhibits instability over time). The key performance characteristics
-          and benchmarks for a DUT are determined (using short duration tests)
-          prior to conducting soak tests. The purpose of soak tests is to
-          capture transient changes in performance which may occur due to
-          infrequent processes, memory leaks, or the low probability
-          coincidence of two or more processes. The stability of the DUT is
-          the paramount consideration, so performance must be evaluated
-          periodically during continuous testing, and this results in use of
-          <xref target="RFC2889"/> Frame Rate metrics instead of <xref
-          target="RFC2544"/> Throughput (which requires stopping traffic to
-          allow time for all traffic to exit internal queues), for
-          example.</t>
-        </list></t>
-
-      <t>Future/planned test specs include:<list style="symbols">
-          <t>Request/Response Performance Tests (TCP, UDP) which measure the
-          transaction rate through the switch.</t>
-
-          <t>Noisy Neighbour Tests, to understand the effects of resource
-          sharing on the performance of a virtual switch.</t>
-
-          <t>Tests derived from examination of ETSI NFV Draft GS IFA003
-          requirements <xref target="IFA003"/> on characterization of
-          acceleration technologies applied to vswitches.</t>
-        </list>The flexibility of deployment of a virtual switch within a
-      network means that the BMWG IETF existing literature needs to be used to
-      characterize the performance of a switch in various deployment
-      scenarios. The deployment scenarios under consideration include:</t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to physical
-          port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |              +--------------------+              |   |
- |              |                    |              |   |
- |              |                    v              |   |  Host
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure></t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to physical port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                  :        |   |
- |       |                                  |        |   |  Guest
- |       :                                  v        |   |
- |   +---------------+           +---------------+   |   |
- |   | logical port 0|           | logical port 1|   |   |
- +---+---------------+-----------+---------------+---+ __|
-         ^                                  :
-         |                                  |
-         :                                  v         __
- +---+---------------+----------+---------------+---+   |
- |   | logical port 0|          | logical port 1|   |   |
- |   +---------------+          +---------------+   |   |
- |       ^                                  :       |   |
- |       |                                  |       |   |  Host
- |       :                                  v       |   |
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |       ^       |      |  |       ^       |      |  |
- |       |       v      |  |       |       v      |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |   0       1   |  |  |   |   0       1   |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-         ^       :                 ^       :
-         |       |                 |       |
-         :       v                 :       v       _
- +---+---------------+---------+---------------+--+ |
- |   |   0       1   |         |   3       4   |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |       ^       |                 ^       |      | |  Host
- |       |       |-----------------|       v      | |
- |   +--------------+          +--------------+   | |
- |   |   phy ports  | vSwitch  |   phy ports  |   | |
- +---+--------------+----------+--------------+---+_|
-         ^                                 :
-         |                                 |
-         :                                 v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                           |   |
- |       |                                           |   |  Guest
- |       :                                           |   |
- |   +---------------+                               |   |
- |   | logical port 0|                               |   |
- +---+---------------+-------------------------------+ __|
-         ^
-         |
-         :                                            __
- +---+---------------+------------------------------+   |
- |   | logical port 0|                              |   |
- |   +---------------+                              |   |
- |       ^                                          |   |
- |       |                                          |   |  Host
- |       :                                          |   |
- |   +--------------+                               |   |
- |   |   phy port   |  vSwitch                      |   |
- +---+--------------+------------ -------------- ---+ __|
-            ^
-            |
-            :
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |                                          :        |   |
- |                                          |        |   |  Guest
- |                                          v        |   |
- |                               +---------------+   |   |
- |                               | logical port  |   |   |
- +-------------------------------+---------------+---+ __|
-                                            :
-                                            |
-                                            v         __
- +------------------------------+---------------+---+   |
- |                              | logical port  |   |   |
- |                              +---------------+   |   |
- |                                          :       |   |
- |                                          |       |   |  Host
- |                                          v       |   |
- |                               +--------------+   |   |
- |                     vSwitch   |   phy port   |   |   |
- +-------------------------------+--------------+---+ __|
-                                        :
-                                        |
-                                        v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |              |       |  |       ^              |  |
- |              v       |  |       |              |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |           0   |  |  |   |   0           |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-                 :                 ^
-                 |                 |
-                 v                 :               _
- +---+---------------+---------+---------------+--+ |
- |   |           1   |         |   1           |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |               |                 ^              | |  Host
- |               L-----------------+              | |
- |                                                | |
- |                    vSwitch                     | |
- +------------------------------------------------+_|]]></artwork>
-        </figure></t>
-
-      <t>A set of Deployment Scenario figures is available on the VSPERF Test
-      Methodology Wiki page <xref target="TestTopo"/>.</t>
-    </section>
-
-    <section title="3x3 Matrix Coverage">
-      <t>This section organizes the many existing test specifications into the
-      "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>).
-      Because the LTD specification ID names are quite long, this section is
-      organized into lists for each occupied cell of the matrix (not all are
-      occupied, also the matrix has grown to 3x4 to accommodate scale metrics
-      when displaying the coverage of many metrics/benchmarks). The current
-      version of the LTD specification is available <xref target="LTD"/>.</t>
-
-      <t>The tests listed below assess the activation of paths in the data
-      plane, rather than the control plane.</t>
-
-      <t>A complete list of tests with short summaries is available on the
-      VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t>
-
-      <section title="Speed of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressLearningRate</t>
-
-            <t>PacketLatency.InitialPacketProcessingLatency</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Activation section">
-        <t><list style="symbols">
-            <t>CPDP.Coupling.Flow.Addition</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Activation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.SystemRecoveryTime</t>
-
-            <t>Throughput.RFC2544.ResetTime</t>
-          </list></t>
-      </section>
-
-      <section title="Scale of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressCachingCapacity</t>
-          </list></t>
-      </section>
-
-      <section title="Speed of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.PacketLossRate</t>
-
-            <t>CPU.RFC2544.0PacketLoss</t>
-
-            <t>Throughput.RFC2544.PacketLossRateFrameModification</t>
-
-            <t>Throughput.RFC2544.BackToBackFrames</t>
-
-            <t>Throughput.RFC2889.MaxForwardingRate</t>
-
-            <t>Throughput.RFC2889.ForwardPressure</t>
-
-            <t>Throughput.RFC2889.BroadcastFrameForwarding</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.ErrorFramesFiltering</t>
-
-            <t>Throughput.RFC2544.Profile</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.Soak</t>
-
-            <t>Throughput.RFC2889.SoakFrameModification</t>
-
-            <t>PacketDelayVariation.RFC3393.Soak</t>
-          </list></t>
-      </section>
-
-      <section title="Scalability of Operation">
-        <t><list style="symbols">
-            <t>Scalability.RFC2544.0PacketLoss</t>
-
-            <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t>
-          </list></t>
-      </section>
-
-      <section title="Summary">
-        <t><figure>
-            <artwork><![CDATA[|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|               |   SPEED     |  ACCURACY  |  RELIABILITY  |    SCALE    |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Activation   |      X      |     X      |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Operation    |      X      |      X     |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-| De-activation |             |            |               |             |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|]]></artwork>
-          </figure></t>
-      </section>
-    </section>
-
-    <section title="Security Considerations">
-      <t>Benchmarking activities as described in this memo are limited to
-      technology characterization of a Device Under Test/System Under Test
-      (DUT/SUT) using controlled stimuli in a laboratory environment, with
-      dedicated address space and the constraints specified in the sections
-      above.</t>
-
-      <t>The benchmarking network topology will be an independent test setup
-      and MUST NOT be connected to devices that may forward the test traffic
-      into a production network, or misroute traffic to the test management
-      network.</t>
-
-      <t>Further, benchmarking is performed on a "black-box" basis, relying
-      solely on measurements observable external to the DUT/SUT.</t>
-
-      <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for
-      benchmarking purposes. Any implications for network security arising
-      from the DUT/SUT SHOULD be identical in the lab and in production
-      networks.</t>
-    </section>
-
-    <section anchor="IANA" title="IANA Considerations">
-      <t>No IANA Action is requested at this time.</t>
-    </section>
-
-    <section title="Acknowledgements">
-      <t>The authors appreciate and acknowledge comments from Scott Bradner,
-      Marius Georgescu, Ramki Krishnan, Doug Montgomery, Martin Klozik,
-      Christian Trautman, and others for their reviews.</t>
-    </section>
-  </middle>
-
-  <back>
-    <references title="Normative References">
-      <?rfc ?>
-
-      <?rfc include="reference.RFC.2119"?>
-
-      <?rfc ?>
-
-      <?rfc include="reference.RFC.2330"?>
-
-      <?rfc include='reference.RFC.2544'?>
-
-      <?rfc include="reference.RFC.2679"?>
-
-      <?rfc include='reference.RFC.2680'?>
-
-      <?rfc include='reference.RFC.3393'?>
-
-      <?rfc include='reference.RFC.3432'?>
-
-      <?rfc include='reference.RFC.2681'?>
-
-      <?rfc include='reference.RFC.5905'?>
-
-      <?rfc include='reference.RFC.4689'?>
-
-      <?rfc include='reference.RFC.4737'?>
-
-      <?rfc include='reference.RFC.5357'?>
-
-      <?rfc include='reference.RFC.2889'?>
-
-      <?rfc include='reference.RFC.3918'?>
-
-      <?rfc include='reference.RFC.6201'?>
-
-      <?rfc include='reference.RFC.2285'?>
-
-      <reference anchor="NFV.PER001">
-        <front>
-          <title>Network Function Virtualization: Performance and Portability
-          Best Practices</title>
-
-          <author fullname="ETSI NFV" initials="" surname="">
-            <organization/>
-          </author>
-
-          <date month="June" year="2014"/>
-        </front>
-
-        <seriesInfo name="Group Specification"
-                    value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/>
-
-        <format type="PDF"/>
-      </reference>
-    </references>
-
-    <references title="Informative References">
-      <?rfc include='reference.RFC.1242'?>
-
-      <?rfc include='reference.RFC.5481'?>
-
-      <?rfc include='reference.RFC.6049'?>
-
-      <?rfc include='reference.RFC.6248'?>
-
-      <?rfc include='reference.RFC.6390'?>
-
-      <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?>
-
-      <?rfc include='reference.I-D.huang-bmwg-virtual-network-performance'?>
-
-      <reference anchor="TestTopo">
-        <front>
-          <title>Test Topologies
-          https://wiki.opnfv.org/vsperf/test_methodology</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="LTDoverV">
-        <front>
-          <title>LTD Test Spec Overview
-          https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="LTD">
-        <front>
-          <title>LTD Test Specification
-          http://artifacts.opnfv.org/vswitchperf/brahmaputra/docs/requirements/index.html</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="BrahRel">
-        <front>
-          <title>Brahmaputra, Second OPNFV Release
-          https://www.opnfv.org/brahmaputra</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="IFA003">
-        <front>
-          <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-    </references>
-  </back>
-</rfc>
diff --git a/docs/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-00.xml b/docs/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-00.xml
deleted file mode 100644
index b5f7f833..00000000
--- a/docs/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-00.xml
+++ /dev/null
@@ -1,964 +0,0 @@
-<?xml version="1.0" encoding="US-ASCII"?>
-<!DOCTYPE rfc SYSTEM "rfc2629.dtd">
-<?rfc toc="yes"?>
-<?rfc tocompact="yes"?>
-<?rfc tocdepth="3"?>
-<?rfc tocindent="yes"?>
-<?rfc symrefs="yes"?>
-<?rfc sortrefs="yes"?>
-<?rfc comments="yes"?>
-<?rfc inline="yes"?>
-<?rfc compact="yes"?>
-<?rfc subcompact="no"?>
-<rfc category="info" docName="draft-vsperf-bmwg-vswitch-opnfv-01"
-     ipr="trust200902">
-  <front>
-    <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in
-    OPNFV</title>
-
-    <author fullname="Maryam Tahhan" initials="M." surname="Tahhan">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>maryam.tahhan@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>billy.o.mahony@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Al Morton" initials="A." surname="Morton">
-      <organization>AT&amp;T Labs</organization>
-
-      <address>
-        <postal>
-          <street>200 Laurel Avenue South</street>
-
-          <city>Middletown,</city>
-
-          <region>NJ</region>
-
-          <code>07748</code>
-
-          <country>USA</country>
-        </postal>
-
-        <phone>+1 732 420 1571</phone>
-
-        <facsimile>+1 732 368 1192</facsimile>
-
-        <email>acmorton@att.com</email>
-
-        <uri>http://home.comcast.net/~acmacm/</uri>
-      </address>
-    </author>
-
-    <date day="14" month="October" year="2015"/>
-
-    <abstract>
-      <t>This memo describes the progress of the Open Platform for NFV (OPNFV)
-      project on virtual switch performance "VSWITCHPERF". This project
-      intends to build on the current and completed work of the Benchmarking
-      Methodology Working Group in IETF, by referencing existing literature.
-      The Benchmarking Methodology Working Group has traditionally conducted
-      laboratory characterization of dedicated physical implementations of
-      internetworking functions. Therefore, this memo begins to describe the
-      additional considerations when virtual switches are implemented in
-      general-purpose hardware. The expanded tests and benchmarks are also
-      influenced by the OPNFV mission to support virtualization of the "telco"
-      infrastructure.</t>
-    </abstract>
-
-    <note title="Requirements Language">
-      <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
-      "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
-      document are to be interpreted as described in <xref
-      target="RFC2119">RFC 2119</xref>.</t>
-
-      <t/>
-    </note>
-  </front>
-
-  <middle>
-    <section title="Introduction">
-      <t>Benchmarking Methodology Working Group (BMWG) has traditionally
-      conducted laboratory characterization of dedicated physical
-      implementations of internetworking functions. The Black-box Benchmarks
-      of Throughput, Latency, Forwarding Rates and others have served our
-      industry for many years. Now, Network Function Virtualization (NFV) has
-      the goal to transform how internetwork functions are implemented, and
-      therefore has garnered much attention.</t>
-
-      <t>This memo describes the progress of the Open Platform for NFV (OPNFV)
-      project on virtual switch performance characterization, "VSWITCHPERF".
-      This project intends to build on the current and completed work of the
-      Benchmarking Methodology Working Group in IETF, by referencing existing
-      literature. For example, currently the most often referenced RFC is
-      <xref target="RFC2544"/> (which depends on <xref target="RFC1242"/>) and
-      foundation of the benchmarking work in OPNFV is common and strong.</t>
-
-      <t>See
-      https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases
-      for more background, and the OPNFV website for general information:
-      https://www.opnfv.org/</t>
-
-      <t>The authors note that OPNFV distinguishes itself from other open
-      source compute and networking projects through its emphasis on existing
-      "telco" services as opposed to cloud-computing. There are many ways in
-      which telco requirements have different emphasis on performance
-      dimensions when compared to cloud computing: support for and transfer of
-      isochronous media streams is one example.</t>
-
-      <t>Note also that the move to NFV Infrastructure has resulted in many
-      new benchmarking initiatives across the industry, and the authors are
-      currently doing their best to maintain alignment with many other
-      projects, and this Internet Draft is evidence of the efforts.</t>
-    </section>
-
-    <section title="Scope">
-      <t>The primary purpose and scope of the memo is to inform BMWG of
-      work-in-progress that builds on the body of extensive literature and
-      experience. Additionally, once the initial information conveyed here is
-      received, this memo may be expanded to include more detail and
-      commentary from both BMWG and OPNFV communities, under BMWG's chartered
-      work to characterize the NFV Infrastructure (a virtual switch is an
-      important aspect of that infrastructure).</t>
-    </section>
-
-    <section title="Benchmarking Considerations">
-      <t>This section highlights some specific considerations (from <xref
-      target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual
-      switches. The OPNFV project is sharing its present view on these areas,
-      as they develop their specifications in the Level Test Design (LTD)
-      document.</t>
-
-      <section title="Comparison with Physical Network Functions">
-        <t>To compare the performance of virtual designs and implementations
-        with their physical counterparts, identical benchmarks are needed.
-        BMWG has developed specifications for many network functions this memo
-        re-uses existing benchmarks through references, and expands them
-        during development of new methods. A key configuration aspect is the
-        number of parallel cores required to achieve comparable performance
-        with a given physical device, or whether some limit of scale was
-        reached before the cores could achieve the comparable level.</t>
-
-        <t>It's unlikely that the virtual switch will be the only application
-        running on the SUT, so CPU utilization, Cache utilization, and Memory
-        footprint should also be recorded for the virtual implementations of
-        internetworking functions.</t>
-      </section>
-
-      <section title="Continued Emphasis on Black-Box Benchmarks">
-        <t>External observations remain essential as the basis for Benchmarks.
-        Internal observations with fixed specification and interpretation will
-        be provided in parallel to assist the development of operations
-        procedures when the technology is deployed.</t>
-      </section>
-
-      <section title="New Configuration Parameters">
-        <t>A key consideration when conducting any sort of benchmark is trying
-        to ensure the consistency and repeatability of test results. When
-        benchmarking the performance of a vSwitch there are many factors that
-        can affect the consistency of results, one key factor is matching the
-        various hardware and software details of the SUT. This section lists
-        some of the many new parameters which this project believes are
-        critical to report in order to achieve repeatability.</t>
-
-        <t>Hardware details including:</t>
-
-        <t><list style="symbols">
-            <t>Platform details</t>
-
-            <t>Processor details</t>
-
-            <t>Memory information (type and size)</t>
-
-            <t>Number of enabled cores</t>
-
-            <t>Number of cores used for the test</t>
-
-            <t>Number of physical NICs, as well as their details
-            (manufacturer, versions, type and the PCI slot they are plugged
-            into)</t>
-
-            <t>NIC interrupt configuration</t>
-
-            <t>BIOS version, release date and any configurations that were
-            modified</t>
-
-            <t>CPU microcode level</t>
-
-            <t>Memory DIMM configurations (quad rank performance may not be
-            the same as dual rank) in size, freq and slot locations</t>
-
-            <t>PCI configuration parameters (payload size, early ack
-            option...)</t>
-
-            <t>Power management at all levels (ACPI sleep states, processor
-            package, OS...)</t>
-          </list>Software details including:</t>
-
-        <t><list style="symbols">
-            <t>OS parameters and behavior (text vs graphical no one typing at
-            the console on one system)</t>
-
-            <t>OS version (for host and VNF)</t>
-
-            <t>Kernel version (for host and VNF)</t>
-
-            <t>GRUB boot parameters (for host and VNF)</t>
-
-            <t>Hypervisor details (Type and version)</t>
-
-            <t>Selected vSwitch, version number or commit id used</t>
-
-            <t>vSwitch launch command line if it has been parameterised</t>
-
-            <t>Memory allocation to the vSwitch</t>
-
-            <t>which NUMA node it is using, and how many memory channels</t>
-
-            <t>DPDK or any other SW dependency version number or commit id
-            used</t>
-
-            <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t>
-
-            <t>VM storage type: snapshot/independent persistent/independent
-            non-persistent</t>
-
-            <t>Number of VMs</t>
-
-            <t>Number of Virtual NICs (vNICs), versions, type and driver</t>
-
-            <t>Number of virtual CPUs and their core affinity on the host</t>
-
-            <t>Number vNIC interrupt configuration</t>
-
-            <t>Thread affinitization for the applications (including the
-            vSwitch itself) on the host</t>
-
-            <t>Details of Resource isolation, such as CPUs designated for
-            Host/Kernel (isolcpu) and CPUs designated for specific processes
-            (taskset). - Test duration. - Number of flows.</t>
-          </list></t>
-
-        <t>Test Traffic Information:<list style="symbols">
-            <t>Traffic type - UDP, TCP, IMIX / Other</t>
-
-            <t>Packet Sizes</t>
-
-            <t>Deployment Scenario</t>
-          </list></t>
-
-        <t/>
-      </section>
-
-      <section title="Flow classification">
-        <t>Virtual switches group packets into flows by processing and
-        matching particular packet or frame header information, or by matching
-        packets based on the input ports. Thus a flow can be thought of a
-        sequence of packets that have the same set of header field values or
-        have arrived on the same port. Performance results can vary based on
-        the parameters the vSwitch uses to match for a flow. The recommended
-        flow classification parameters for any vSwitch performance tests are:
-        the input port, the source IP address, the destination IP address and
-        the Ethernet protocol type field. It is essential to increase the flow
-        timeout time on a vSwitch before conducting any performance tests that
-        do not measure the flow setup time. Normally the first packet of a
-        particular stream will install the flow in the virtual switch which
-        adds an additional latency, subsequent packets of the same flow are
-        not subject to this latency if the flow is already installed on the
-        vSwitch.</t>
-      </section>
-
-      <section title="Benchmarks using Baselines with Resource Isolation">
-        <t>This outline describes measurement of baseline with isolated
-        resources at a high level, which is the intended approach at this
-        time.</t>
-
-        <t><list style="numbers">
-            <t>Baselines: <list style="symbols">
-                <t>Optional: Benchmark platform forwarding capability without
-                a vswitch or VNF for at least 72 hours (serves as a means of
-                platform validation and a means to obtain the base performance
-                for the platform in terms of its maximum forwarding rate and
-                latency). <figure>
-                    <preamble>Benchmark platform forwarding
-                    capability</preamble>
-
-                    <artwork align="right"><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |          Simple Forwarding App           |   |  Host
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmark VNF forwarding capability with direct
-                connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72
-                hours (serves as a means of VNF validation and a means to
-                obtain the base performance for the VNF in terms of its
-                maximum forwarding rate and latency). The metrics gathered
-                from this test will serve as a key comparison point for
-                vSwitch bypass technologies performance and vSwitch
-                performance. <figure align="right">
-                    <preamble>Benchmark VNF forwarding capability</preamble>
-
-                    <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |                 VNF                      |   |   |
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |          Passthrough/SR-IOV              |   |  Host
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmarking with isolated resources alone, with other
-                resources (both HW&amp;SW) disabled Example, vSw and VM are
-                SUT</t>
-
-                <t>Benchmarking with isolated resources alone, leaving some
-                resources unused</t>
-
-                <t>Benchmark with isolated resources and all resources
-                occupied</t>
-              </list></t>
-
-            <t>Next Steps<list style="symbols">
-                <t>Limited sharing</t>
-
-                <t>Production scenarios</t>
-
-                <t>Stressful scenarios</t>
-              </list></t>
-          </list></t>
-      </section>
-    </section>
-
-    <section title="VSWITCHPERF Specification Summary">
-      <t>The overall specification in preparation is referred to as a Level
-      Test Design (LTD) document, which will contain a suite of performance
-      tests. The base performance tests in the LTD are based on the
-      pre-existing specifications developed by BMWG to test the performance of
-      physical switches. These specifications include:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2544"/> Benchmarking Methodology for Network
-          Interconnect Devices</t>
-
-          <t><xref target="RFC2889"/> Benchmarking Methodology for LAN
-          Switching</t>
-
-          <t><xref target="RFC6201"/> Device Reset Characterization</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t>Some of the above/newer RFCs are being applied in benchmarking for
-      the first time, and represent a development challenge for test equipment
-      developers. Fortunately, many members of the testing system community
-      have engaged on the VSPERF project, including an open source test
-      system.</t>
-
-      <t>In addition to this, the LTD also re-uses the terminology defined
-      by:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2285"/> Benchmarking Terminology for LAN
-          Switching Devices</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t/>
-
-      <t>Specifications to be included in future updates of the LTD
-      include:<list style="symbols">
-          <t><xref target="RFC3918"/> Methodology for IP Multicast
-          Benchmarking</t>
-
-          <t><xref target="RFC4737"/> Packet Reordering Metrics</t>
-        </list></t>
-
-      <t>As one might expect, the most fundamental internetworking
-      characteristics of Throughput and Latency remain important when the
-      switch is virtualized, and these benchmarks figure prominently in the
-      specification.</t>
-
-      <t>When considering characteristics important to "telco" network
-      functions, we must begin to consider additional performance metrics. In
-      this case, the project specifications have referenced metrics from the
-      IETF IP Performance Metrics (IPPM) literature. This means that the <xref
-      target="RFC2544"/> test of Latency is replaced by measurement of a
-      metric derived from IPPM's <xref target="RFC2679"/>, where a set of
-      statistical summaries will be provided (mean, max, min, etc.). Further
-      metrics planned to be benchmarked include packet delay variation as
-      defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT
-      availability, DUT capacity and packet loss in long term testing at
-      Throughput level, where some low-level of background loss may be present
-      and characterized.</t>
-
-      <t>Tests have been (or will be) designed to collect the metrics
-      below:</t>
-
-      <t><list style="symbols">
-          <t>Throughput Tests to measure the maximum forwarding rate (in
-          frames per second or fps) and bit rate (in Mbps) for a constant load
-          (as defined by RFC1242) without traffic loss.</t>
-
-          <t>Packet and Frame Delay Distribution Tests to measure average, min
-          and max packet and frame delay for constant loads.</t>
-
-          <t>Packet Delay Tests to understand latency distribution for
-          different packet sizes and over an extended test run to uncover
-          outliers.</t>
-
-          <t>Scalability Tests to understand how the virtual switch performs
-          as the number of flows, active ports, complexity of the forwarding
-          logic&rsquo;s configuration&hellip; it has to deal with
-          increases.</t>
-
-          <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer
-          performance, i.e. how fast systems can send and receive data through
-          the switch.</t>
-
-          <t>Control Path and Datapath Coupling Tests, to understand how
-          closely coupled the datapath and the control path are as well as the
-          effect of this coupling on the performance of the DUT (example:
-          delay of the initial packet of a flow).</t>
-
-          <t>CPU and Memory Consumption Tests to understand the virtual
-          switch&rsquo;s footprint on the system, usually conducted as
-          auxiliary measurements with benchmarks above. They include: CPU
-          utilization, Cache utilization and Memory footprint.</t>
-        </list></t>
-
-      <t>Future/planned test specs include:<list style="symbols">
-          <t>Request/Response Performance Tests (TCP, UDP) which measure the
-          transaction rate through the switch.</t>
-
-          <t>Noisy Neighbour Tests, to understand the effects of resource
-          sharing on the performance of a virtual switch.</t>
-
-          <t>Tests derived from examination of ETSI NFV Draft GS IFA003
-          requirements <xref target="IFA003"/> on characterization of
-          acceleration technologies applied to vswitches.</t>
-        </list>The flexibility of deployment of a virtual switch within a
-      network means that the BMWG IETF existing literature needs to be used to
-      characterize the performance of a switch in various deployment
-      scenarios. The deployment scenarios under consideration include:</t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to physical
-          port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |              +--------------------+              |   |
- |              |                    |              |   |
- |              |                    v              |   |  Host
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure></t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to physical port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                  :        |   |
- |       |                                  |        |   |  Guest
- |       :                                  v        |   |
- |   +---------------+           +---------------+   |   |
- |   | logical port 0|           | logical port 1|   |   |
- +---+---------------+-----------+---------------+---+ __|
-         ^                                  :
-         |                                  |
-         :                                  v         __
- +---+---------------+----------+---------------+---+   |
- |   | logical port 0|          | logical port 1|   |   |
- |   +---------------+          +---------------+   |   |
- |       ^                                  :       |   |
- |       |                                  |       |   |  Host
- |       :                                  v       |   |
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |       ^       |      |  |       ^       |      |  |
- |       |       v      |  |       |       v      |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |   0       1   |  |  |   |   0       1   |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-         ^       :                 ^       :
-         |       |                 |       |
-         :       v                 :       v       _
- +---+---------------+---------+---------------+--+ |
- |   |   0       1   |         |   3       4   |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |       ^       |                 ^       |      | |  Host
- |       |       |-----------------|       v      | |
- |   +--------------+          +--------------+   | |
- |   |   phy ports  | vSwitch  |   phy ports  |   | |
- +---+--------------+----------+--------------+---+_|
-         ^                                 :
-         |                                 |
-         :                                 v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                           |   |
- |       |                                           |   |  Guest
- |       :                                           |   |
- |   +---------------+                               |   |
- |   | logical port 0|                               |   |
- +---+---------------+-------------------------------+ __|
-         ^
-         |
-         :                                            __
- +---+---------------+------------------------------+   |
- |   | logical port 0|                              |   |
- |   +---------------+                              |   |
- |       ^                                          |   |
- |       |                                          |   |  Host
- |       :                                          |   |
- |   +--------------+                               |   |
- |   |   phy port   |  vSwitch                      |   |
- +---+--------------+------------ -------------- ---+ __|
-            ^
-            |
-            :
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |                                          :        |   |
- |                                          |        |   |  Guest
- |                                          v        |   |
- |                               +---------------+   |   |
- |                               | logical port  |   |   |
- +-------------------------------+---------------+---+ __|
-                                            :
-                                            |
-                                            v         __
- +------------------------------+---------------+---+   |
- |                              | logical port  |   |   |
- |                              +---------------+   |   |
- |                                          :       |   |
- |                                          |       |   |  Host
- |                                          v       |   |
- |                               +--------------+   |   |
- |                     vSwitch   |   phy port   |   |   |
- +-------------------------------+--------------+---+ __|
-                                        :
-                                        |
-                                        v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |              |       |  |       ^              |  |
- |              v       |  |       |              |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |           0   |  |  |   |   0           |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-                 :                 ^
-                 |                 |
-                 v                 :               _
- +---+---------------+---------+---------------+--+ |
- |   |           1   |         |   1           |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |               |                 ^              | |  Host
- |               L-----------------+              | |
- |                                                | |
- |                    vSwitch                     | |
- +------------------------------------------------+_|]]></artwork>
-        </figure></t>
-
-      <t>A set of Deployment Scenario figures is available on the VSPERF Test
-      Methodology Wiki page <xref target="TestTopo"/>. </t>
-    </section>
-
-    <section title="3x3 Matrix Coverage">
-      <t>This section organizes the many existing test specifications into the
-      "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>).
-      Because the LTD specification ID names are quite long, this section is
-      organized into lists for each occupied cell of the matrix (not all are
-      occupied, also the matrix has grown to 3x4 to accommodate scale metrics
-      when displaying the coverage of many metrics/benchmarks).</t>
-
-      <t>The tests listed below assess the activation of paths in the data
-      plane, rather than the control plane.</t>
-
-      <t>A complete list of tests with short summaries is available on the
-      VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t>
-
-      <section title="Speed of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressLearningRate</t>
-
-            <t>PacketLatency.InitialPacketProcessingLatency</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Activation section">
-        <t><list style="symbols">
-            <t>CPDP.Coupling.Flow.Addition</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Activation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.SystemRecoveryTime</t>
-
-            <t>Throughput.RFC2544.ResetTime</t>
-          </list></t>
-      </section>
-
-      <section title="Scale of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressCachingCapacity</t>
-          </list></t>
-      </section>
-
-      <section title="Speed of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.PacketLossRate</t>
-
-            <t>CPU.RFC2544.0PacketLoss</t>
-
-            <t>Throughput.RFC2544.PacketLossRateFrameModification</t>
-
-            <t>Throughput.RFC2544.BackToBackFrames</t>
-
-            <t>Throughput.RFC2889.MaxForwardingRate</t>
-
-            <t>Throughput.RFC2889.ForwardPressure</t>
-
-            <t>Throughput.RFC2889.BroadcastFrameForwarding</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.ErrorFramesFiltering</t>
-
-            <t>Throughput.RFC2544.Profile</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.Soak</t>
-
-            <t>Throughput.RFC2889.SoakFrameModification</t>
-
-            <t>PacketDelayVariation.RFC3393.Soak</t>
-          </list></t>
-      </section>
-
-      <section title="Scalability of Operation">
-        <t><list style="symbols">
-            <t>Scalability.RFC2544.0PacketLoss</t>
-
-            <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t>
-          </list></t>
-      </section>
-
-      <section title="Summary">
-        <t><figure>
-            <artwork><![CDATA[|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|               |   SPEED     |  ACCURACY  |  RELIABILITY  |    SCALE    |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Activation   |      X      |     X      |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Operation    |      X      |      X     |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-| De-activation |             |            |               |             |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|]]></artwork>
-          </figure></t>
-      </section>
-    </section>
-
-    <section title="Security Considerations">
-      <t>Benchmarking activities as described in this memo are limited to
-      technology characterization of a Device Under Test/System Under Test
-      (DUT/SUT) using controlled stimuli in a laboratory environment, with
-      dedicated address space and the constraints specified in the sections
-      above.</t>
-
-      <t>The benchmarking network topology will be an independent test setup
-      and MUST NOT be connected to devices that may forward the test traffic
-      into a production network, or misroute traffic to the test management
-      network.</t>
-
-      <t>Further, benchmarking is performed on a "black-box" basis, relying
-      solely on measurements observable external to the DUT/SUT.</t>
-
-      <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for
-      benchmarking purposes. Any implications for network security arising
-      from the DUT/SUT SHOULD be identical in the lab and in production
-      networks.</t>
-    </section>
-
-    <section anchor="IANA" title="IANA Considerations">
-      <t>No IANA Action is requested at this time.</t>
-    </section>
-
-    <section title="Acknowledgements">
-      <t>The authors acknowledge</t>
-    </section>
-  </middle>
-
-  <back>
-    <references title="Normative References">
-      <?rfc ?>
-
-      <?rfc include="reference.RFC.2119"?>
-
-      <?rfc include="reference.RFC.2330"?>
-
-      <?rfc include='reference.RFC.2544'?>
-
-      <?rfc include="reference.RFC.2679"?>
-
-      <?rfc include='reference.RFC.2680'?>
-
-      <?rfc include='reference.RFC.3393'?>
-
-      <?rfc include='reference.RFC.3432'?>
-
-      <?rfc include='reference.RFC.2681'?>
-
-      <?rfc include='reference.RFC.5905'?>
-
-      <?rfc include='reference.RFC.4689'?>
-
-      <?rfc include='reference.RFC.4737'?>
-
-      <?rfc include='reference.RFC.5357'?>
-
-      <?rfc include='reference.RFC.2889'?>
-
-      <?rfc include='reference.RFC.3918'?>
-
-      <?rfc include='reference.RFC.6201'?>
-
-      <?rfc include='reference.RFC.2285'?>
-
-      <reference anchor="NFV.PER001">
-        <front>
-          <title>Network Function Virtualization: Performance and Portability
-          Best Practices</title>
-
-          <author fullname="ETSI NFV" initials="" surname="">
-            <organization/>
-          </author>
-
-          <date month="June" year="2014"/>
-        </front>
-
-        <seriesInfo name="Group Specification"
-                    value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/>
-
-        <format type="PDF"/>
-      </reference>
-    </references>
-
-    <references title="Informative References">
-      <?rfc include='reference.RFC.1242'?>
-
-      <?rfc include='reference.RFC.5481'?>
-
-      <?rfc include='reference.RFC.6049'?>
-
-      <?rfc include='reference.RFC.6248'?>
-
-      <?rfc include='reference.RFC.6390'?>
-
-      <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?>
-
-      <reference anchor="TestTopo">
-        <front>
-          <title>Test Topologies
-          https://wiki.opnfv.org/vsperf/test_methodology</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="LTDoverV">
-        <front>
-          <title>LTD Test Spec Overview
-          https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review </title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="IFA003">
-        <front>
-          <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-    </references>
-  </back>
-</rfc>
diff --git a/docs/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-01.xml b/docs/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-01.xml
deleted file mode 100644
index a9405a77..00000000
--- a/docs/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-01.xml
+++ /dev/null
@@ -1,1016 +0,0 @@
-<?xml version="1.0" encoding="US-ASCII"?>
-<!DOCTYPE rfc SYSTEM "rfc2629.dtd">
-<?rfc toc="yes"?>
-<?rfc tocompact="yes"?>
-<?rfc tocdepth="3"?>
-<?rfc tocindent="yes"?>
-<?rfc symrefs="yes"?>
-<?rfc sortrefs="yes"?>
-<?rfc comments="yes"?>
-<?rfc inline="yes"?>
-<?rfc compact="yes"?>
-<?rfc subcompact="no"?>
-<rfc category="info" docName="draft-vsperf-bmwg-vswitch-opnfv-02"
-     ipr="trust200902">
-  <front>
-    <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in
-    OPNFV</title>
-
-    <author fullname="Maryam Tahhan" initials="M." surname="Tahhan">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>maryam.tahhan@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>billy.o.mahony@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Al Morton" initials="A." surname="Morton">
-      <organization>AT&amp;T Labs</organization>
-
-      <address>
-        <postal>
-          <street>200 Laurel Avenue South</street>
-
-          <city>Middletown,</city>
-
-          <region>NJ</region>
-
-          <code>07748</code>
-
-          <country>USA</country>
-        </postal>
-
-        <phone>+1 732 420 1571</phone>
-
-        <facsimile>+1 732 368 1192</facsimile>
-
-        <email>acmorton@att.com</email>
-
-        <uri>http://home.comcast.net/~acmacm/</uri>
-      </address>
-    </author>
-
-    <date day="20" month="March" year="2016"/>
-
-    <abstract>
-      <t>This memo describes the progress of the Open Platform for NFV (OPNFV)
-      project on virtual switch performance "VSWITCHPERF". This project
-      intends to build on the current and completed work of the Benchmarking
-      Methodology Working Group in IETF, by referencing existing literature.
-      The Benchmarking Methodology Working Group has traditionally conducted
-      laboratory characterization of dedicated physical implementations of
-      internetworking functions. Therefore, this memo begins to describe the
-      additional considerations when virtual switches are implemented in
-      general-purpose hardware. The expanded tests and benchmarks are also
-      influenced by the OPNFV mission to support virtualization of the "telco"
-      infrastructure.</t>
-    </abstract>
-
-    <note title="Requirements Language">
-      <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
-      "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
-      document are to be interpreted as described in <xref
-      target="RFC2119">RFC 2119</xref>.</t>
-
-      <t/>
-    </note>
-  </front>
-
-  <middle>
-    <section title="Introduction">
-      <t>Benchmarking Methodology Working Group (BMWG) has traditionally
-      conducted laboratory characterization of dedicated physical
-      implementations of internetworking functions. The Black-box Benchmarks
-      of Throughput, Latency, Forwarding Rates and others have served our
-      industry for many years. Now, Network Function Virtualization (NFV) has
-      the goal to transform how internetwork functions are implemented, and
-      therefore has garnered much attention.</t>
-
-      <t>This memo summarizes the progress of the Open Platform for NFV
-      (OPNFV) project on virtual switch performance characterization,
-      "VSWITCHPERF", through the Brahmaputra (second) release <xref
-      target="BrahRel"/>. This project intends to build on the current and
-      completed work of the Benchmarking Methodology Working Group in IETF, by
-      referencing existing literature. For example, currently the most often
-      referenced RFC is <xref target="RFC2544"/> (which depends on <xref
-      target="RFC1242"/>) and foundation of the benchmarking work in OPNFV is
-      common and strong.</t>
-
-      <t>See
-      https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases
-      for more background, and the OPNFV website for general information:
-      https://www.opnfv.org/</t>
-
-      <t>The authors note that OPNFV distinguishes itself from other open
-      source compute and networking projects through its emphasis on existing
-      "telco" services as opposed to cloud-computing. There are many ways in
-      which telco requirements have different emphasis on performance
-      dimensions when compared to cloud computing: support for and transfer of
-      isochronous media streams is one example.</t>
-
-      <t>Note also that the move to NFV Infrastructure has resulted in many
-      new benchmarking initiatives across the industry. The authors are
-      currently doing their best to maintain alignment with many other
-      projects, and this Internet Draft is one part of the efforts. We
-      acknowledge the early work in <xref
-      target="I-D.huang-bmwg-virtual-network-performance"/>, and useful
-      discussion with the authors.</t>
-    </section>
-
-    <section title="Scope">
-      <t>The primary purpose and scope of the memo is to inform the industry
-      of work-in-progress that builds on the body of extensive BMWG literature
-      and experience, and describe the extensions needed for benchmarking
-      virtual switches. Inital feedback indicates that many of these
-      extensions may be applicable beyond the current scope (to hardware
-      switches in the NFV Infrastructure and to virtual routers, for example).
-      Additionally, this memo serves as a vehicle to include more detail and
-      commentary from BMWG and other Open Source communities, under BMWG's
-      chartered work to characterize the NFV Infrastructure (a virtual switch
-      is an important aspect of that infrastructure).</t>
-    </section>
-
-    <section title="Benchmarking Considerations">
-      <t>This section highlights some specific considerations (from <xref
-      target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual
-      switches. The OPNFV project is sharing its present view on these areas,
-      as they develop their specifications in the Level Test Design (LTD)
-      document.</t>
-
-      <section title="Comparison with Physical Network Functions">
-        <t>To compare the performance of virtual designs and implementations
-        with their physical counterparts, identical benchmarks are needed.
-        BMWG has developed specifications for many network functions this memo
-        re-uses existing benchmarks through references, and expands them
-        during development of new methods. A key configuration aspect is the
-        number of parallel cores required to achieve comparable performance
-        with a given physical device, or whether some limit of scale was
-        reached before the cores could achieve the comparable level.</t>
-
-        <t>It's unlikely that the virtual switch will be the only application
-        running on the SUT, so CPU utilization, Cache utilization, and Memory
-        footprint should also be recorded for the virtual implementations of
-        internetworking functions.</t>
-      </section>
-
-      <section title="Continued Emphasis on Black-Box Benchmarks">
-        <t>External observations remain essential as the basis for Benchmarks.
-        Internal observations with fixed specification and interpretation will
-        be provided in parallel to assist the development of operations
-        procedures when the technology is deployed.</t>
-      </section>
-
-      <section title="New Configuration Parameters">
-        <t>A key consideration when conducting any sort of benchmark is trying
-        to ensure the consistency and repeatability of test results. When
-        benchmarking the performance of a vSwitch there are many factors that
-        can affect the consistency of results, one key factor is matching the
-        various hardware and software details of the SUT. This section lists
-        some of the many new parameters which this project believes are
-        critical to report in order to achieve repeatability.</t>
-
-        <t>Hardware details including:</t>
-
-        <t><list style="symbols">
-            <t>Platform details</t>
-
-            <t>Processor details</t>
-
-            <t>Memory information (type and size)</t>
-
-            <t>Number of enabled cores</t>
-
-            <t>Number of cores used for the test</t>
-
-            <t>Number of physical NICs, as well as their details
-            (manufacturer, versions, type and the PCI slot they are plugged
-            into)</t>
-
-            <t>NIC interrupt configuration</t>
-
-            <t>BIOS version, release date and any configurations that were
-            modified</t>
-
-            <t>CPU microcode level</t>
-
-            <t>Memory DIMM configurations (quad rank performance may not be
-            the same as dual rank) in size, freq and slot locations</t>
-
-            <t>PCI configuration parameters (payload size, early ack
-            option...)</t>
-
-            <t>Power management at all levels (ACPI sleep states, processor
-            package, OS...)</t>
-          </list>Software details including:</t>
-
-        <t><list style="symbols">
-            <t>OS parameters and behavior (text vs graphical no one typing at
-            the console on one system)</t>
-
-            <t>OS version (for host and VNF)</t>
-
-            <t>Kernel version (for host and VNF)</t>
-
-            <t>GRUB boot parameters (for host and VNF)</t>
-
-            <t>Hypervisor details (Type and version)</t>
-
-            <t>Selected vSwitch, version number or commit id used</t>
-
-            <t>vSwitch launch command line if it has been parameterised</t>
-
-            <t>Memory allocation to the vSwitch</t>
-
-            <t>which NUMA node it is using, and how many memory channels</t>
-
-            <t>DPDK or any other SW dependency version number or commit id
-            used</t>
-
-            <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t>
-
-            <t>VM storage type: snapshot/independent persistent/independent
-            non-persistent</t>
-
-            <t>Number of VMs</t>
-
-            <t>Number of Virtual NICs (vNICs), versions, type and driver</t>
-
-            <t>Number of virtual CPUs and their core affinity on the host</t>
-
-            <t>Number vNIC interrupt configuration</t>
-
-            <t>Thread affinitization for the applications (including the
-            vSwitch itself) on the host</t>
-
-            <t>Details of Resource isolation, such as CPUs designated for
-            Host/Kernel (isolcpu) and CPUs designated for specific processes
-            (taskset). - Test duration. - Number of flows.</t>
-          </list></t>
-
-        <t>Test Traffic Information:<list style="symbols">
-            <t>Traffic type - UDP, TCP, IMIX / Other</t>
-
-            <t>Packet Sizes</t>
-
-            <t>Deployment Scenario</t>
-          </list></t>
-
-        <t/>
-      </section>
-
-      <section title="Flow classification">
-        <t>Virtual switches group packets into flows by processing and
-        matching particular packet or frame header information, or by matching
-        packets based on the input ports. Thus a flow can be thought of a
-        sequence of packets that have the same set of header field values or
-        have arrived on the same port. Performance results can vary based on
-        the parameters the vSwitch uses to match for a flow. The recommended
-        flow classification parameters for any vSwitch performance tests are:
-        the input port, the source IP address, the destination IP address and
-        the Ethernet protocol type field. It is essential to increase the flow
-        timeout time on a vSwitch before conducting any performance tests that
-        do not measure the flow setup time. Normally the first packet of a
-        particular stream will install the flow in the virtual switch which
-        adds an additional latency, subsequent packets of the same flow are
-        not subject to this latency if the flow is already installed on the
-        vSwitch.</t>
-      </section>
-
-      <section title="Benchmarks using Baselines with Resource Isolation">
-        <t>This outline describes measurement of baseline with isolated
-        resources at a high level, which is the intended approach at this
-        time.</t>
-
-        <t><list style="numbers">
-            <t>Baselines: <list style="symbols">
-                <t>Optional: Benchmark platform forwarding capability without
-                a vswitch or VNF for at least 72 hours (serves as a means of
-                platform validation and a means to obtain the base performance
-                for the platform in terms of its maximum forwarding rate and
-                latency). <figure>
-                    <preamble>Benchmark platform forwarding
-                    capability</preamble>
-
-                    <artwork align="right"><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |          Simple Forwarding App           |   |  Host
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmark VNF forwarding capability with direct
-                connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72
-                hours (serves as a means of VNF validation and a means to
-                obtain the base performance for the VNF in terms of its
-                maximum forwarding rate and latency). The metrics gathered
-                from this test will serve as a key comparison point for
-                vSwitch bypass technologies performance and vSwitch
-                performance. <figure align="right">
-                    <preamble>Benchmark VNF forwarding capability</preamble>
-
-                    <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |                 VNF                      |   |   |
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |          Passthrough/SR-IOV              |   |  Host
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmarking with isolated resources alone, with other
-                resources (both HW&amp;SW) disabled Example, vSw and VM are
-                SUT</t>
-
-                <t>Benchmarking with isolated resources alone, leaving some
-                resources unused</t>
-
-                <t>Benchmark with isolated resources and all resources
-                occupied</t>
-              </list></t>
-
-            <t>Next Steps<list style="symbols">
-                <t>Limited sharing</t>
-
-                <t>Production scenarios</t>
-
-                <t>Stressful scenarios</t>
-              </list></t>
-          </list></t>
-      </section>
-    </section>
-
-    <section title="VSWITCHPERF Specification Summary">
-      <t>The overall specification in preparation is referred to as a Level
-      Test Design (LTD) document, which will contain a suite of performance
-      tests. The base performance tests in the LTD are based on the
-      pre-existing specifications developed by BMWG to test the performance of
-      physical switches. These specifications include:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2544"/> Benchmarking Methodology for Network
-          Interconnect Devices</t>
-
-          <t><xref target="RFC2889"/> Benchmarking Methodology for LAN
-          Switching</t>
-
-          <t><xref target="RFC6201"/> Device Reset Characterization</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t>Some of the above/newer RFCs are being applied in benchmarking for
-      the first time, and represent a development challenge for test equipment
-      developers. Fortunately, many members of the testing system community
-      have engaged on the VSPERF project, including an open source test
-      system.</t>
-
-      <t>In addition to this, the LTD also re-uses the terminology defined
-      by:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2285"/> Benchmarking Terminology for LAN
-          Switching Devices</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t/>
-
-      <t>Specifications to be included in future updates of the LTD
-      include:<list style="symbols">
-          <t><xref target="RFC3918"/> Methodology for IP Multicast
-          Benchmarking</t>
-
-          <t><xref target="RFC4737"/> Packet Reordering Metrics</t>
-        </list></t>
-
-      <t>As one might expect, the most fundamental internetworking
-      characteristics of Throughput and Latency remain important when the
-      switch is virtualized, and these benchmarks figure prominently in the
-      specification.</t>
-
-      <t>When considering characteristics important to "telco" network
-      functions, we must begin to consider additional performance metrics. In
-      this case, the project specifications have referenced metrics from the
-      IETF IP Performance Metrics (IPPM) literature. This means that the <xref
-      target="RFC2544"/> test of Latency is replaced by measurement of a
-      metric derived from IPPM's <xref target="RFC2679"/>, where a set of
-      statistical summaries will be provided (mean, max, min, etc.). Further
-      metrics planned to be benchmarked include packet delay variation as
-      defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT
-      availability, DUT capacity and packet loss in long term testing at
-      Throughput level, where some low-level of background loss may be present
-      and characterized.</t>
-
-      <t>Tests have been (or will be) designed to collect the metrics
-      below:</t>
-
-      <t><list style="symbols">
-          <t>Throughput Tests to measure the maximum forwarding rate (in
-          frames per second or fps) and bit rate (in Mbps) for a constant load
-          (as defined by <xref target="RFC1242"/>) without traffic loss.</t>
-
-          <t>Packet and Frame Delay Distribution Tests to measure average, min
-          and max packet and frame delay for constant loads.</t>
-
-          <t>Packet Delay Tests to understand latency distribution for
-          different packet sizes and over an extended test run to uncover
-          outliers.</t>
-
-          <t>Scalability Tests to understand how the virtual switch performs
-          as the number of flows, active ports, complexity of the forwarding
-          logic&rsquo;s configuration&hellip; it has to deal with
-          increases.</t>
-
-          <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer
-          performance, i.e. how fast systems can send and receive data through
-          the switch.</t>
-
-          <t>Control Path and Datapath Coupling Tests, to understand how
-          closely coupled the datapath and the control path are as well as the
-          effect of this coupling on the performance of the DUT (example:
-          delay of the initial packet of a flow).</t>
-
-          <t>CPU and Memory Consumption Tests to understand the virtual
-          switch&rsquo;s footprint on the system, usually conducted as
-          auxiliary measurements with benchmarks above. They include: CPU
-          utilization, Cache utilization and Memory footprint.</t>
-
-          <t>The so-called "Soak" tests, where the selected test is conducted
-          over a long period of time (with an ideal duration of 24 hours, and
-          at least 6 hours). The purpose of soak tests is to capture transient
-          changes in performance which may occur due to infrequent processes
-          or the low probability coincidence of two or more processes. The
-          performance must be evaluated periodically during continuous
-          testing, and this results in use of <xref target="RFC2889"/> Frame
-          Rate metrics instead of <xref target="RFC2544"/> Throughput (which
-          requires stopping traffic to allow time for all traffic to exit
-          internal queues).</t>
-        </list></t>
-
-      <t>Future/planned test specs include:<list style="symbols">
-          <t>Request/Response Performance Tests (TCP, UDP) which measure the
-          transaction rate through the switch.</t>
-
-          <t>Noisy Neighbour Tests, to understand the effects of resource
-          sharing on the performance of a virtual switch.</t>
-
-          <t>Tests derived from examination of ETSI NFV Draft GS IFA003
-          requirements <xref target="IFA003"/> on characterization of
-          acceleration technologies applied to vswitches.</t>
-        </list>The flexibility of deployment of a virtual switch within a
-      network means that the BMWG IETF existing literature needs to be used to
-      characterize the performance of a switch in various deployment
-      scenarios. The deployment scenarios under consideration include:</t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to physical
-          port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |              +--------------------+              |   |
- |              |                    |              |   |
- |              |                    v              |   |  Host
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure></t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to physical port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                  :        |   |
- |       |                                  |        |   |  Guest
- |       :                                  v        |   |
- |   +---------------+           +---------------+   |   |
- |   | logical port 0|           | logical port 1|   |   |
- +---+---------------+-----------+---------------+---+ __|
-         ^                                  :
-         |                                  |
-         :                                  v         __
- +---+---------------+----------+---------------+---+   |
- |   | logical port 0|          | logical port 1|   |   |
- |   +---------------+          +---------------+   |   |
- |       ^                                  :       |   |
- |       |                                  |       |   |  Host
- |       :                                  v       |   |
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |       ^       |      |  |       ^       |      |  |
- |       |       v      |  |       |       v      |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |   0       1   |  |  |   |   0       1   |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-         ^       :                 ^       :
-         |       |                 |       |
-         :       v                 :       v       _
- +---+---------------+---------+---------------+--+ |
- |   |   0       1   |         |   3       4   |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |       ^       |                 ^       |      | |  Host
- |       |       |-----------------|       v      | |
- |   +--------------+          +--------------+   | |
- |   |   phy ports  | vSwitch  |   phy ports  |   | |
- +---+--------------+----------+--------------+---+_|
-         ^                                 :
-         |                                 |
-         :                                 v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                           |   |
- |       |                                           |   |  Guest
- |       :                                           |   |
- |   +---------------+                               |   |
- |   | logical port 0|                               |   |
- +---+---------------+-------------------------------+ __|
-         ^
-         |
-         :                                            __
- +---+---------------+------------------------------+   |
- |   | logical port 0|                              |   |
- |   +---------------+                              |   |
- |       ^                                          |   |
- |       |                                          |   |  Host
- |       :                                          |   |
- |   +--------------+                               |   |
- |   |   phy port   |  vSwitch                      |   |
- +---+--------------+------------ -------------- ---+ __|
-            ^
-            |
-            :
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |                                          :        |   |
- |                                          |        |   |  Guest
- |                                          v        |   |
- |                               +---------------+   |   |
- |                               | logical port  |   |   |
- +-------------------------------+---------------+---+ __|
-                                            :
-                                            |
-                                            v         __
- +------------------------------+---------------+---+   |
- |                              | logical port  |   |   |
- |                              +---------------+   |   |
- |                                          :       |   |
- |                                          |       |   |  Host
- |                                          v       |   |
- |                               +--------------+   |   |
- |                     vSwitch   |   phy port   |   |   |
- +-------------------------------+--------------+---+ __|
-                                        :
-                                        |
-                                        v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |              |       |  |       ^              |  |
- |              v       |  |       |              |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |           0   |  |  |   |   0           |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-                 :                 ^
-                 |                 |
-                 v                 :               _
- +---+---------------+---------+---------------+--+ |
- |   |           1   |         |   1           |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |               |                 ^              | |  Host
- |               L-----------------+              | |
- |                                                | |
- |                    vSwitch                     | |
- +------------------------------------------------+_|]]></artwork>
-        </figure></t>
-
-      <t>A set of Deployment Scenario figures is available on the VSPERF Test
-      Methodology Wiki page <xref target="TestTopo"/>.</t>
-    </section>
-
-    <section title="3x3 Matrix Coverage">
-      <t>This section organizes the many existing test specifications into the
-      "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>).
-      Because the LTD specification ID names are quite long, this section is
-      organized into lists for each occupied cell of the matrix (not all are
-      occupied, also the matrix has grown to 3x4 to accommodate scale metrics
-      when displaying the coverage of many metrics/benchmarks). The current
-      version of the LTD specification is available <xref target="LTD"/>.</t>
-
-      <t>The tests listed below assess the activation of paths in the data
-      plane, rather than the control plane.</t>
-
-      <t>A complete list of tests with short summaries is available on the
-      VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t>
-
-      <section title="Speed of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressLearningRate</t>
-
-            <t>PacketLatency.InitialPacketProcessingLatency</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Activation section">
-        <t><list style="symbols">
-            <t>CPDP.Coupling.Flow.Addition</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Activation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.SystemRecoveryTime</t>
-
-            <t>Throughput.RFC2544.ResetTime</t>
-          </list></t>
-      </section>
-
-      <section title="Scale of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressCachingCapacity</t>
-          </list></t>
-      </section>
-
-      <section title="Speed of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.PacketLossRate</t>
-
-            <t>CPU.RFC2544.0PacketLoss</t>
-
-            <t>Throughput.RFC2544.PacketLossRateFrameModification</t>
-
-            <t>Throughput.RFC2544.BackToBackFrames</t>
-
-            <t>Throughput.RFC2889.MaxForwardingRate</t>
-
-            <t>Throughput.RFC2889.ForwardPressure</t>
-
-            <t>Throughput.RFC2889.BroadcastFrameForwarding</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.ErrorFramesFiltering</t>
-
-            <t>Throughput.RFC2544.Profile</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.Soak</t>
-
-            <t>Throughput.RFC2889.SoakFrameModification</t>
-
-            <t>PacketDelayVariation.RFC3393.Soak</t>
-          </list></t>
-      </section>
-
-      <section title="Scalability of Operation">
-        <t><list style="symbols">
-            <t>Scalability.RFC2544.0PacketLoss</t>
-
-            <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t>
-          </list></t>
-      </section>
-
-      <section title="Summary">
-        <t><figure>
-            <artwork><![CDATA[|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|               |   SPEED     |  ACCURACY  |  RELIABILITY  |    SCALE    |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Activation   |      X      |     X      |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Operation    |      X      |      X     |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-| De-activation |             |            |               |             |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|]]></artwork>
-          </figure></t>
-      </section>
-    </section>
-
-    <section title="Security Considerations">
-      <t>Benchmarking activities as described in this memo are limited to
-      technology characterization of a Device Under Test/System Under Test
-      (DUT/SUT) using controlled stimuli in a laboratory environment, with
-      dedicated address space and the constraints specified in the sections
-      above.</t>
-
-      <t>The benchmarking network topology will be an independent test setup
-      and MUST NOT be connected to devices that may forward the test traffic
-      into a production network, or misroute traffic to the test management
-      network.</t>
-
-      <t>Further, benchmarking is performed on a "black-box" basis, relying
-      solely on measurements observable external to the DUT/SUT.</t>
-
-      <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for
-      benchmarking purposes. Any implications for network security arising
-      from the DUT/SUT SHOULD be identical in the lab and in production
-      networks.</t>
-    </section>
-
-    <section anchor="IANA" title="IANA Considerations">
-      <t>No IANA Action is requested at this time.</t>
-    </section>
-
-    <section title="Acknowledgements">
-      <t>The authors appreciate and acknowledge comments from Scott Bradner,
-      Marius Georgescu, Ramki Krishnan, and Doug Montgomery, and others for
-      their reviews.</t>
-    </section>
-  </middle>
-
-  <back>
-    <references title="Normative References">
-      <?rfc ?>
-
-      <?rfc include="reference.RFC.2119"?>
-
-      <?rfc ?>
-
-      <?rfc include="reference.RFC.2330"?>
-
-      <?rfc include='reference.RFC.2544'?>
-
-      <?rfc include="reference.RFC.2679"?>
-
-      <?rfc include='reference.RFC.2680'?>
-
-      <?rfc include='reference.RFC.3393'?>
-
-      <?rfc include='reference.RFC.3432'?>
-
-      <?rfc include='reference.RFC.2681'?>
-
-      <?rfc include='reference.RFC.5905'?>
-
-      <?rfc include='reference.RFC.4689'?>
-
-      <?rfc include='reference.RFC.4737'?>
-
-      <?rfc include='reference.RFC.5357'?>
-
-      <?rfc include='reference.RFC.2889'?>
-
-      <?rfc include='reference.RFC.3918'?>
-
-      <?rfc include='reference.RFC.6201'?>
-
-      <?rfc include='reference.RFC.2285'?>
-
-      <reference anchor="NFV.PER001">
-        <front>
-          <title>Network Function Virtualization: Performance and Portability
-          Best Practices</title>
-
-          <author fullname="ETSI NFV" initials="" surname="">
-            <organization/>
-          </author>
-
-          <date month="June" year="2014"/>
-        </front>
-
-        <seriesInfo name="Group Specification"
-                    value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/>
-
-        <format type="PDF"/>
-      </reference>
-    </references>
-
-    <references title="Informative References">
-      <?rfc include='reference.RFC.1242'?>
-
-      <?rfc include='reference.RFC.5481'?>
-
-      <?rfc include='reference.RFC.6049'?>
-
-      <?rfc include='reference.RFC.6248'?>
-
-      <?rfc include='reference.RFC.6390'?>
-
-      <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?>
-
-      <?rfc include='reference.I-D.huang-bmwg-virtual-network-performance'?>
-
-      <reference anchor="TestTopo">
-        <front>
-          <title>Test Topologies
-          https://wiki.opnfv.org/vsperf/test_methodology</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="LTDoverV">
-        <front>
-          <title>LTD Test Spec Overview
-          https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="LTD">
-        <front>
-          <title>LTD Test Specification
-          http://artifacts.opnfv.org/vswitchperf/docs/requirements/index.html</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="BrahRel">
-        <front>
-          <title>Brahmaputra, Second OPNFV Release
-          https://www.opnfv.org/brahmaputra</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="IFA003">
-        <front>
-          <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-    </references>
-  </back>
-</rfc>
diff --git a/docs/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-02.xml b/docs/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-02.xml
deleted file mode 100644
index 9157763e..00000000
--- a/docs/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-02.xml
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-<?xml version="1.0" encoding="US-ASCII"?>
-<!DOCTYPE rfc SYSTEM "rfc2629.dtd">
-<?rfc toc="yes"?>
-<?rfc tocompact="yes"?>
-<?rfc tocdepth="3"?>
-<?rfc tocindent="yes"?>
-<?rfc symrefs="yes"?>
-<?rfc sortrefs="yes"?>
-<?rfc comments="yes"?>
-<?rfc inline="yes"?>
-<?rfc compact="yes"?>
-<?rfc subcompact="no"?>
-<rfc category="info" docName="draft-vsperf-bmwg-vswitch-opnfv-02"
-     ipr="trust200902">
-  <front>
-    <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in
-    OPNFV</title>
-
-    <author fullname="Maryam Tahhan" initials="M." surname="Tahhan">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>maryam.tahhan@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony">
-      <organization>Intel</organization>
-
-      <address>
-        <postal>
-          <street/>
-
-          <city/>
-
-          <region/>
-
-          <code/>
-
-          <country/>
-        </postal>
-
-        <phone/>
-
-        <facsimile/>
-
-        <email>billy.o.mahony@intel.com</email>
-
-        <uri/>
-      </address>
-    </author>
-
-    <author fullname="Al Morton" initials="A." surname="Morton">
-      <organization>AT&amp;T Labs</organization>
-
-      <address>
-        <postal>
-          <street>200 Laurel Avenue South</street>
-
-          <city>Middletown,</city>
-
-          <region>NJ</region>
-
-          <code>07748</code>
-
-          <country>USA</country>
-        </postal>
-
-        <phone>+1 732 420 1571</phone>
-
-        <facsimile>+1 732 368 1192</facsimile>
-
-        <email>acmorton@att.com</email>
-
-        <uri>http://home.comcast.net/~acmacm/</uri>
-      </address>
-    </author>
-
-    <date day="21" month="March" year="2016"/>
-
-    <abstract>
-      <t>This memo describes the progress of the Open Platform for NFV (OPNFV)
-      project on virtual switch performance "VSWITCHPERF". This project
-      intends to build on the current and completed work of the Benchmarking
-      Methodology Working Group in IETF, by referencing existing literature.
-      The Benchmarking Methodology Working Group has traditionally conducted
-      laboratory characterization of dedicated physical implementations of
-      internetworking functions. Therefore, this memo begins to describe the
-      additional considerations when virtual switches are implemented in
-      general-purpose hardware. The expanded tests and benchmarks are also
-      influenced by the OPNFV mission to support virtualization of the "telco"
-      infrastructure.</t>
-    </abstract>
-
-    <note title="Requirements Language">
-      <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
-      "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
-      document are to be interpreted as described in <xref
-      target="RFC2119">RFC 2119</xref>.</t>
-
-      <t/>
-    </note>
-  </front>
-
-  <middle>
-    <section title="Introduction">
-      <t>Benchmarking Methodology Working Group (BMWG) has traditionally
-      conducted laboratory characterization of dedicated physical
-      implementations of internetworking functions. The Black-box Benchmarks
-      of Throughput, Latency, Forwarding Rates and others have served our
-      industry for many years. Now, Network Function Virtualization (NFV) has
-      the goal to transform how internetwork functions are implemented, and
-      therefore has garnered much attention.</t>
-
-      <t>This memo summarizes the progress of the Open Platform for NFV
-      (OPNFV) project on virtual switch performance characterization,
-      "VSWITCHPERF", through the Brahmaputra (second) release <xref
-      target="BrahRel"/>. This project intends to build on the current and
-      completed work of the Benchmarking Methodology Working Group in IETF, by
-      referencing existing literature. For example, currently the most often
-      referenced RFC is <xref target="RFC2544"/> (which depends on <xref
-      target="RFC1242"/>) and foundation of the benchmarking work in OPNFV is
-      common and strong.</t>
-
-      <t>See
-      https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases
-      for more background, and the OPNFV website for general information:
-      https://www.opnfv.org/</t>
-
-      <t>The authors note that OPNFV distinguishes itself from other open
-      source compute and networking projects through its emphasis on existing
-      "telco" services as opposed to cloud-computing. There are many ways in
-      which telco requirements have different emphasis on performance
-      dimensions when compared to cloud computing: support for and transfer of
-      isochronous media streams is one example.</t>
-
-      <t>Note also that the move to NFV Infrastructure has resulted in many
-      new benchmarking initiatives across the industry. The authors are
-      currently doing their best to maintain alignment with many other
-      projects, and this Internet Draft is one part of the efforts. We
-      acknowledge the early work in <xref
-      target="I-D.huang-bmwg-virtual-network-performance"/>, and useful
-      discussion with the authors.</t>
-    </section>
-
-    <section title="Scope">
-      <t>The primary purpose and scope of the memo is to inform the industry
-      of work-in-progress that builds on the body of extensive BMWG literature
-      and experience, and describe the extensions needed for benchmarking
-      virtual switches. Inital feedback indicates that many of these
-      extensions may be applicable beyond the current scope (to hardware
-      switches in the NFV Infrastructure and to virtual routers, for example).
-      Additionally, this memo serves as a vehicle to include more detail and
-      commentary from BMWG and other Open Source communities, under BMWG's
-      chartered work to characterize the NFV Infrastructure (a virtual switch
-      is an important aspect of that infrastructure).</t>
-    </section>
-
-    <section title="Benchmarking Considerations">
-      <t>This section highlights some specific considerations (from <xref
-      target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual
-      switches. The OPNFV project is sharing its present view on these areas,
-      as they develop their specifications in the Level Test Design (LTD)
-      document.</t>
-
-      <section title="Comparison with Physical Network Functions">
-        <t>To compare the performance of virtual designs and implementations
-        with their physical counterparts, identical benchmarks are needed.
-        BMWG has developed specifications for many network functions this memo
-        re-uses existing benchmarks through references, and expands them
-        during development of new methods. A key configuration aspect is the
-        number of parallel cores required to achieve comparable performance
-        with a given physical device, or whether some limit of scale was
-        reached before the cores could achieve the comparable level.</t>
-
-        <t>It's unlikely that the virtual switch will be the only application
-        running on the SUT, so CPU utilization, Cache utilization, and Memory
-        footprint should also be recorded for the virtual implementations of
-        internetworking functions.</t>
-      </section>
-
-      <section title="Continued Emphasis on Black-Box Benchmarks">
-        <t>External observations remain essential as the basis for Benchmarks.
-        Internal observations with fixed specification and interpretation will
-        be provided in parallel to assist the development of operations
-        procedures when the technology is deployed.</t>
-      </section>
-
-      <section title="New Configuration Parameters">
-        <t>A key consideration when conducting any sort of benchmark is trying
-        to ensure the consistency and repeatability of test results. When
-        benchmarking the performance of a vSwitch there are many factors that
-        can affect the consistency of results, one key factor is matching the
-        various hardware and software details of the SUT. This section lists
-        some of the many new parameters which this project believes are
-        critical to report in order to achieve repeatability.</t>
-
-        <t>Hardware details including:</t>
-
-        <t><list style="symbols">
-            <t>Platform details</t>
-
-            <t>Processor details</t>
-
-            <t>Memory information (type and size)</t>
-
-            <t>Number of enabled cores</t>
-
-            <t>Number of cores used for the test</t>
-
-            <t>Number of physical NICs, as well as their details
-            (manufacturer, versions, type and the PCI slot they are plugged
-            into)</t>
-
-            <t>NIC interrupt configuration</t>
-
-            <t>BIOS version, release date and any configurations that were
-            modified</t>
-
-            <t>CPU microcode level</t>
-
-            <t>Memory DIMM configurations (quad rank performance may not be
-            the same as dual rank) in size, freq and slot locations</t>
-
-            <t>PCI configuration parameters (payload size, early ack
-            option...)</t>
-
-            <t>Power management at all levels (ACPI sleep states, processor
-            package, OS...)</t>
-          </list>Software details including:</t>
-
-        <t><list style="symbols">
-            <t>OS parameters and behavior (text vs graphical no one typing at
-            the console on one system)</t>
-
-            <t>OS version (for host and VNF)</t>
-
-            <t>Kernel version (for host and VNF)</t>
-
-            <t>GRUB boot parameters (for host and VNF)</t>
-
-            <t>Hypervisor details (Type and version)</t>
-
-            <t>Selected vSwitch, version number or commit id used</t>
-
-            <t>vSwitch launch command line if it has been parameterised</t>
-
-            <t>Memory allocation to the vSwitch</t>
-
-            <t>which NUMA node it is using, and how many memory channels</t>
-
-            <t>DPDK or any other SW dependency version number or commit id
-            used</t>
-
-            <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t>
-
-            <t>VM storage type: snapshot/independent persistent/independent
-            non-persistent</t>
-
-            <t>Number of VMs</t>
-
-            <t>Number of Virtual NICs (vNICs), versions, type and driver</t>
-
-            <t>Number of virtual CPUs and their core affinity on the host</t>
-
-            <t>Number vNIC interrupt configuration</t>
-
-            <t>Thread affinitization for the applications (including the
-            vSwitch itself) on the host</t>
-
-            <t>Details of Resource isolation, such as CPUs designated for
-            Host/Kernel (isolcpu) and CPUs designated for specific processes
-            (taskset). - Test duration. - Number of flows.</t>
-          </list></t>
-
-        <t>Test Traffic Information:<list style="symbols">
-            <t>Traffic type - UDP, TCP, IMIX / Other</t>
-
-            <t>Packet Sizes</t>
-
-            <t>Deployment Scenario</t>
-          </list></t>
-
-        <t/>
-      </section>
-
-      <section title="Flow classification">
-        <t>Virtual switches group packets into flows by processing and
-        matching particular packet or frame header information, or by matching
-        packets based on the input ports. Thus a flow can be thought of a
-        sequence of packets that have the same set of header field values or
-        have arrived on the same port. Performance results can vary based on
-        the parameters the vSwitch uses to match for a flow. The recommended
-        flow classification parameters for any vSwitch performance tests are:
-        the input port, the source IP address, the destination IP address and
-        the Ethernet protocol type field. It is essential to increase the flow
-        timeout time on a vSwitch before conducting any performance tests that
-        do not measure the flow setup time. Normally the first packet of a
-        particular stream will install the flow in the virtual switch which
-        adds an additional latency, subsequent packets of the same flow are
-        not subject to this latency if the flow is already installed on the
-        vSwitch.</t>
-      </section>
-
-      <section title="Benchmarks using Baselines with Resource Isolation">
-        <t>This outline describes measurement of baseline with isolated
-        resources at a high level, which is the intended approach at this
-        time.</t>
-
-        <t><list style="numbers">
-            <t>Baselines: <list style="symbols">
-                <t>Optional: Benchmark platform forwarding capability without
-                a vswitch or VNF for at least 72 hours (serves as a means of
-                platform validation and a means to obtain the base performance
-                for the platform in terms of its maximum forwarding rate and
-                latency). <figure>
-                    <preamble>Benchmark platform forwarding
-                    capability</preamble>
-
-                    <artwork align="right"><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |          Simple Forwarding App           |   |  Host
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmark VNF forwarding capability with direct
-                connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72
-                hours (serves as a means of VNF validation and a means to
-                obtain the base performance for the VNF in terms of its
-                maximum forwarding rate and latency). The metrics gathered
-                from this test will serve as a key comparison point for
-                vSwitch bypass technologies performance and vSwitch
-                performance. <figure align="right">
-                    <preamble>Benchmark VNF forwarding capability</preamble>
-
-                    <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |   +------------------------------------------+   |   |
- |   |                                          |   |   |
- |   |                 VNF                      |   |   |
- |   |                                          |   |   |
- |   +------------------------------------------+   |   |
- |   |          Passthrough/SR-IOV              |   |  Host
- |   +------------------------------------------+   |   |
- |   |                 NIC                      |   |   |
- +---+------------------------------------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-
-                    <postamble/>
-                  </figure></t>
-
-                <t>Benchmarking with isolated resources alone, with other
-                resources (both HW&amp;SW) disabled Example, vSw and VM are
-                SUT</t>
-
-                <t>Benchmarking with isolated resources alone, leaving some
-                resources unused</t>
-
-                <t>Benchmark with isolated resources and all resources
-                occupied</t>
-              </list></t>
-
-            <t>Next Steps<list style="symbols">
-                <t>Limited sharing</t>
-
-                <t>Production scenarios</t>
-
-                <t>Stressful scenarios</t>
-              </list></t>
-          </list></t>
-      </section>
-    </section>
-
-    <section title="VSWITCHPERF Specification Summary">
-      <t>The overall specification in preparation is referred to as a Level
-      Test Design (LTD) document, which will contain a suite of performance
-      tests. The base performance tests in the LTD are based on the
-      pre-existing specifications developed by BMWG to test the performance of
-      physical switches. These specifications include:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2544"/> Benchmarking Methodology for Network
-          Interconnect Devices</t>
-
-          <t><xref target="RFC2889"/> Benchmarking Methodology for LAN
-          Switching</t>
-
-          <t><xref target="RFC6201"/> Device Reset Characterization</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t>Some of the above/newer RFCs are being applied in benchmarking for
-      the first time, and represent a development challenge for test equipment
-      developers. Fortunately, many members of the testing system community
-      have engaged on the VSPERF project, including an open source test
-      system.</t>
-
-      <t>In addition to this, the LTD also re-uses the terminology defined
-      by:</t>
-
-      <t><list style="symbols">
-          <t><xref target="RFC2285"/> Benchmarking Terminology for LAN
-          Switching Devices</t>
-
-          <t><xref target="RFC5481"/> Packet Delay Variation Applicability
-          Statement</t>
-        </list></t>
-
-      <t/>
-
-      <t>Specifications to be included in future updates of the LTD
-      include:<list style="symbols">
-          <t><xref target="RFC3918"/> Methodology for IP Multicast
-          Benchmarking</t>
-
-          <t><xref target="RFC4737"/> Packet Reordering Metrics</t>
-        </list></t>
-
-      <t>As one might expect, the most fundamental internetworking
-      characteristics of Throughput and Latency remain important when the
-      switch is virtualized, and these benchmarks figure prominently in the
-      specification.</t>
-
-      <t>When considering characteristics important to "telco" network
-      functions, we must begin to consider additional performance metrics. In
-      this case, the project specifications have referenced metrics from the
-      IETF IP Performance Metrics (IPPM) literature. This means that the <xref
-      target="RFC2544"/> test of Latency is replaced by measurement of a
-      metric derived from IPPM's <xref target="RFC2679"/>, where a set of
-      statistical summaries will be provided (mean, max, min, etc.). Further
-      metrics planned to be benchmarked include packet delay variation as
-      defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT
-      availability, DUT capacity and packet loss in long term testing at
-      Throughput level, where some low-level of background loss may be present
-      and characterized.</t>
-
-      <t>Tests have been (or will be) designed to collect the metrics
-      below:</t>
-
-      <t><list style="symbols">
-          <t>Throughput Tests to measure the maximum forwarding rate (in
-          frames per second or fps) and bit rate (in Mbps) for a constant load
-          (as defined by <xref target="RFC1242"/>) without traffic loss.</t>
-
-          <t>Packet and Frame Delay Distribution Tests to measure average, min
-          and max packet and frame delay for constant loads.</t>
-
-          <t>Packet Delay Tests to understand latency distribution for
-          different packet sizes and over an extended test run to uncover
-          outliers.</t>
-
-          <t>Scalability Tests to understand how the virtual switch performs
-          as the number of flows, active ports, complexity of the forwarding
-          logic&rsquo;s configuration&hellip; it has to deal with
-          increases.</t>
-
-          <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer
-          performance, i.e. how fast systems can send and receive data through
-          the switch.</t>
-
-          <t>Control Path and Datapath Coupling Tests, to understand how
-          closely coupled the datapath and the control path are as well as the
-          effect of this coupling on the performance of the DUT (example:
-          delay of the initial packet of a flow).</t>
-
-          <t>CPU and Memory Consumption Tests to understand the virtual
-          switch&rsquo;s footprint on the system, usually conducted as
-          auxiliary measurements with benchmarks above. They include: CPU
-          utilization, Cache utilization and Memory footprint.</t>
-
-          <t>The so-called "Soak" tests, where the selected test is conducted
-          over a long period of time (with an ideal duration of 24 hours, and
-          at least 6 hours). The purpose of soak tests is to capture transient
-          changes in performance which may occur due to infrequent processes
-          or the low probability coincidence of two or more processes. The
-          performance must be evaluated periodically during continuous
-          testing, and this results in use of <xref target="RFC2889"/> Frame
-          Rate metrics instead of <xref target="RFC2544"/> Throughput (which
-          requires stopping traffic to allow time for all traffic to exit
-          internal queues).</t>
-        </list></t>
-
-      <t>Future/planned test specs include:<list style="symbols">
-          <t>Request/Response Performance Tests (TCP, UDP) which measure the
-          transaction rate through the switch.</t>
-
-          <t>Noisy Neighbour Tests, to understand the effects of resource
-          sharing on the performance of a virtual switch.</t>
-
-          <t>Tests derived from examination of ETSI NFV Draft GS IFA003
-          requirements <xref target="IFA003"/> on characterization of
-          acceleration technologies applied to vswitches.</t>
-        </list>The flexibility of deployment of a virtual switch within a
-      network means that the BMWG IETF existing literature needs to be used to
-      characterize the performance of a switch in various deployment
-      scenarios. The deployment scenarios under consideration include:</t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to physical
-          port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +--------------------------------------------------+   |
- |              +--------------------+              |   |
- |              |                    |              |   |
- |              |                    v              |   |  Host
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure></t>
-
-      <t><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to physical port</preamble>
-
-          <artwork><![CDATA[                                                      __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                  :        |   |
- |       |                                  |        |   |  Guest
- |       :                                  v        |   |
- |   +---------------+           +---------------+   |   |
- |   | logical port 0|           | logical port 1|   |   |
- +---+---------------+-----------+---------------+---+ __|
-         ^                                  :
-         |                                  |
-         :                                  v         __
- +---+---------------+----------+---------------+---+   |
- |   | logical port 0|          | logical port 1|   |   |
- |   +---------------+          +---------------+   |   |
- |       ^                                  :       |   |
- |       |                                  |       |   |  Host
- |       :                                  v       |   |
- |   +--------------+            +--------------+   |   |
- |   |   phy port   |  vSwitch   |   phy port   |   |   |
- +---+--------------+------------+--------------+---+ __|
-            ^                           :
-            |                           |
-            :                           v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF to virtual switch
-          to VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |       ^       |      |  |       ^       |      |  |
- |       |       v      |  |       |       v      |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |   0       1   |  |  |   |   0       1   |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-         ^       :                 ^       :
-         |       |                 |       |
-         :       v                 :       v       _
- +---+---------------+---------+---------------+--+ |
- |   |   0       1   |         |   3       4   |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |       ^       |                 ^       |      | |  Host
- |       |       |-----------------|       v      | |
- |   +--------------+          +--------------+   | |
- |   |   phy ports  | vSwitch  |   phy ports  |   | |
- +---+--------------+----------+--------------+---+_|
-         ^                                 :
-         |                                 |
-         :                                 v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>Physical port to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |       ^                                           |   |
- |       |                                           |   |  Guest
- |       :                                           |   |
- |   +---------------+                               |   |
- |   | logical port 0|                               |   |
- +---+---------------+-------------------------------+ __|
-         ^
-         |
-         :                                            __
- +---+---------------+------------------------------+   |
- |   | logical port 0|                              |   |
- |   +---------------+                              |   |
- |       ^                                          |   |
- |       |                                          |   |  Host
- |       :                                          |   |
- |   +--------------+                               |   |
- |   |   phy port   |  vSwitch                      |   |
- +---+--------------+------------ -------------- ---+ __|
-            ^
-            |
-            :
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to physical port</preamble>
-
-          <artwork><![CDATA[                                                       __
- +---------------------------------------------------+   |
- |                                                   |   |
- |   +-------------------------------------------+   |   |
- |   |                 Application               |   |   |
- |   +-------------------------------------------+   |   |
- |                                          :        |   |
- |                                          |        |   |  Guest
- |                                          v        |   |
- |                               +---------------+   |   |
- |                               | logical port  |   |   |
- +-------------------------------+---------------+---+ __|
-                                            :
-                                            |
-                                            v         __
- +------------------------------+---------------+---+   |
- |                              | logical port  |   |   |
- |                              +---------------+   |   |
- |                                          :       |   |
- |                                          |       |   |  Host
- |                                          v       |   |
- |                               +--------------+   |   |
- |                     vSwitch   |   phy port   |   |   |
- +-------------------------------+--------------+---+ __|
-                                        :
-                                        |
-                                        v
- +--------------------------------------------------+
- |                                                  |
- |                traffic generator                 |
- |                                                  |
- +--------------------------------------------------+]]></artwork>
-        </figure><figure>
-          <preamble>VNF to virtual switch to VNF</preamble>
-
-          <artwork><![CDATA[                                                   __
- +----------------------+  +----------------------+  |
- |   Guest 1            |  |   Guest 2            |  |
- |   +---------------+  |  |   +---------------+  |  |
- |   |  Application  |  |  |   |  Application  |  |  |
- |   +---------------+  |  |   +---------------+  |  |
- |              |       |  |       ^              |  |
- |              v       |  |       |              |  |  Guests
- |   +---------------+  |  |   +---------------+  |  |
- |   | logical ports |  |  |   | logical ports |  |  |
- |   |           0   |  |  |   |   0           |  |  |
- +---+---------------+--+  +---+---------------+--+__|
-                 :                 ^
-                 |                 |
-                 v                 :               _
- +---+---------------+---------+---------------+--+ |
- |   |           1   |         |   1           |  | |
- |   | logical ports |         | logical ports |  | |
- |   +---------------+         +---------------+  | |
- |               |                 ^              | |  Host
- |               L-----------------+              | |
- |                                                | |
- |                    vSwitch                     | |
- +------------------------------------------------+_|]]></artwork>
-        </figure></t>
-
-      <t>A set of Deployment Scenario figures is available on the VSPERF Test
-      Methodology Wiki page <xref target="TestTopo"/>.</t>
-    </section>
-
-    <section title="3x3 Matrix Coverage">
-      <t>This section organizes the many existing test specifications into the
-      "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>).
-      Because the LTD specification ID names are quite long, this section is
-      organized into lists for each occupied cell of the matrix (not all are
-      occupied, also the matrix has grown to 3x4 to accommodate scale metrics
-      when displaying the coverage of many metrics/benchmarks). The current
-      version of the LTD specification is available <xref target="LTD"/>.</t>
-
-      <t>The tests listed below assess the activation of paths in the data
-      plane, rather than the control plane.</t>
-
-      <t>A complete list of tests with short summaries is available on the
-      VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t>
-
-      <section title="Speed of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressLearningRate</t>
-
-            <t>PacketLatency.InitialPacketProcessingLatency</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Activation section">
-        <t><list style="symbols">
-            <t>CPDP.Coupling.Flow.Addition</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Activation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.SystemRecoveryTime</t>
-
-            <t>Throughput.RFC2544.ResetTime</t>
-          </list></t>
-      </section>
-
-      <section title="Scale of Activation">
-        <t><list style="symbols">
-            <t>Activation.RFC2889.AddressCachingCapacity</t>
-          </list></t>
-      </section>
-
-      <section title="Speed of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2544.PacketLossRate</t>
-
-            <t>CPU.RFC2544.0PacketLoss</t>
-
-            <t>Throughput.RFC2544.PacketLossRateFrameModification</t>
-
-            <t>Throughput.RFC2544.BackToBackFrames</t>
-
-            <t>Throughput.RFC2889.MaxForwardingRate</t>
-
-            <t>Throughput.RFC2889.ForwardPressure</t>
-
-            <t>Throughput.RFC2889.BroadcastFrameForwarding</t>
-          </list></t>
-      </section>
-
-      <section title="Accuracy of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.ErrorFramesFiltering</t>
-
-            <t>Throughput.RFC2544.Profile</t>
-          </list></t>
-      </section>
-
-      <section title="Reliability of Operation">
-        <t><list style="symbols">
-            <t>Throughput.RFC2889.Soak</t>
-
-            <t>Throughput.RFC2889.SoakFrameModification</t>
-
-            <t>PacketDelayVariation.RFC3393.Soak</t>
-          </list></t>
-      </section>
-
-      <section title="Scalability of Operation">
-        <t><list style="symbols">
-            <t>Scalability.RFC2544.0PacketLoss</t>
-
-            <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t>
-          </list></t>
-      </section>
-
-      <section title="Summary">
-        <t><figure>
-            <artwork><![CDATA[|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|               |   SPEED     |  ACCURACY  |  RELIABILITY  |    SCALE    |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Activation   |      X      |     X      |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-|  Operation    |      X      |      X     |       X       |      X      |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|
-|               |             |            |               |             |
-| De-activation |             |            |               |             |
-|               |             |            |               |             |
-|------------------------------------------------------------------------|]]></artwork>
-          </figure></t>
-      </section>
-    </section>
-
-    <section title="Security Considerations">
-      <t>Benchmarking activities as described in this memo are limited to
-      technology characterization of a Device Under Test/System Under Test
-      (DUT/SUT) using controlled stimuli in a laboratory environment, with
-      dedicated address space and the constraints specified in the sections
-      above.</t>
-
-      <t>The benchmarking network topology will be an independent test setup
-      and MUST NOT be connected to devices that may forward the test traffic
-      into a production network, or misroute traffic to the test management
-      network.</t>
-
-      <t>Further, benchmarking is performed on a "black-box" basis, relying
-      solely on measurements observable external to the DUT/SUT.</t>
-
-      <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for
-      benchmarking purposes. Any implications for network security arising
-      from the DUT/SUT SHOULD be identical in the lab and in production
-      networks.</t>
-    </section>
-
-    <section anchor="IANA" title="IANA Considerations">
-      <t>No IANA Action is requested at this time.</t>
-    </section>
-
-    <section title="Acknowledgements">
-      <t>The authors appreciate and acknowledge comments from Scott Bradner,
-      Marius Georgescu, Ramki Krishnan, Doug Montgomery, Martin Klozik,
-      Christian Trautman, and others for their reviews.</t>
-    </section>
-  </middle>
-
-  <back>
-    <references title="Normative References">
-      <?rfc ?>
-
-      <?rfc include="reference.RFC.2119"?>
-
-      <?rfc ?>
-
-      <?rfc include="reference.RFC.2330"?>
-
-      <?rfc include='reference.RFC.2544'?>
-
-      <?rfc include="reference.RFC.2679"?>
-
-      <?rfc include='reference.RFC.2680'?>
-
-      <?rfc include='reference.RFC.3393'?>
-
-      <?rfc include='reference.RFC.3432'?>
-
-      <?rfc include='reference.RFC.2681'?>
-
-      <?rfc include='reference.RFC.5905'?>
-
-      <?rfc include='reference.RFC.4689'?>
-
-      <?rfc include='reference.RFC.4737'?>
-
-      <?rfc include='reference.RFC.5357'?>
-
-      <?rfc include='reference.RFC.2889'?>
-
-      <?rfc include='reference.RFC.3918'?>
-
-      <?rfc include='reference.RFC.6201'?>
-
-      <?rfc include='reference.RFC.2285'?>
-
-      <reference anchor="NFV.PER001">
-        <front>
-          <title>Network Function Virtualization: Performance and Portability
-          Best Practices</title>
-
-          <author fullname="ETSI NFV" initials="" surname="">
-            <organization/>
-          </author>
-
-          <date month="June" year="2014"/>
-        </front>
-
-        <seriesInfo name="Group Specification"
-                    value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/>
-
-        <format type="PDF"/>
-      </reference>
-    </references>
-
-    <references title="Informative References">
-      <?rfc include='reference.RFC.1242'?>
-
-      <?rfc include='reference.RFC.5481'?>
-
-      <?rfc include='reference.RFC.6049'?>
-
-      <?rfc include='reference.RFC.6248'?>
-
-      <?rfc include='reference.RFC.6390'?>
-
-      <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?>
-
-      <?rfc include='reference.I-D.huang-bmwg-virtual-network-performance'?>
-
-      <reference anchor="TestTopo">
-        <front>
-          <title>Test Topologies
-          https://wiki.opnfv.org/vsperf/test_methodology</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="LTDoverV">
-        <front>
-          <title>LTD Test Spec Overview
-          https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="LTD">
-        <front>
-          <title>LTD Test Specification
-          http://artifacts.opnfv.org/vswitchperf/docs/requirements/index.html</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="BrahRel">
-        <front>
-          <title>Brahmaputra, Second OPNFV Release
-          https://www.opnfv.org/brahmaputra</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-
-      <reference anchor="IFA003">
-        <front>
-          <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title>
-
-          <author>
-            <organization/>
-          </author>
-
-          <date/>
-        </front>
-      </reference>
-    </references>
-  </back>
-</rfc>
diff --git a/docs/requirements/vm2vm_alternative_benchmark.png b/docs/requirements/vm2vm_alternative_benchmark.png
deleted file mode 100644
index d21334ba..00000000
--- a/docs/requirements/vm2vm_alternative_benchmark.png
+++ /dev/null
diff --git a/docs/requirements/vm2vm_benchmark.png b/docs/requirements/vm2vm_benchmark.png
deleted file mode 100644
index 3a85e51f..00000000
--- a/docs/requirements/vm2vm_benchmark.png
+++ /dev/null
diff --git a/docs/requirements/vm2vm_hypervisor_benchmark.png b/docs/requirements/vm2vm_hypervisor_benchmark.png
deleted file mode 100644
index b5b76e8a..00000000
--- a/docs/requirements/vm2vm_hypervisor_benchmark.png
+++ /dev/null
diff --git a/docs/requirements/vm2vm_virtual_interface_benchmark.png b/docs/requirements/vm2vm_virtual_interface_benchmark.png
deleted file mode 100644
index 55294af6..00000000
--- a/docs/requirements/vm2vm_virtual_interface_benchmark.png
+++ /dev/null
diff --git a/docs/requirements/vswitchperf_ltd.rst b/docs/requirements/vswitchperf_ltd.rst
deleted file mode 100644
index e1372520..00000000
--- a/docs/requirements/vswitchperf_ltd.rst
+++ /dev/null
@@ -1,1712 +0,0 @@
-.. This work is licensed under a Creative Commons Attribution 4.0 International License.
-.. http://creativecommons.org/licenses/by/4.0
-.. (c) OPNFV, Intel Corporation, AT&T and others.
-
-******************************
-VSPERF LEVEL TEST DESIGN (LTD)
-******************************
-
-.. 3.1
-
-============
-Introduction
-============
-
-The intention of this Level Test Design (LTD) document is to specify the set of
-tests to carry out in order to objectively measure the current characteristics
-of a virtual switch in the Network Function Virtualization Infrastructure
-(NFVI) as well as the test pass criteria. The detailed test cases will be
-defined in details-of-LTD_, preceded by the doc-id-of-LTD_ and the scope-of-LTD_.
-
-This document is currently in draft form.
-
-.. 3.1.1
-
-
-.. _doc-id-of-LTD:
-
-Document identifier
-===================
-
-The document id will be used to uniquely
-identify versions of the LTD. The format for the document id will be:
-OPNFV\_vswitchperf\_LTD\_REL\_STATUS, where by the
-status is one of: draft, reviewed, corrected or final. The document id
-for this version of the LTD is:
-OPNFV\_vswitchperf\_LTD\_Brahmaputra\_REVIEWED.
-
-.. 3.1.2
-
-.. _scope-of-LTD:
-
-Scope
-=====
-
-The main purpose of this project is to specify a suite of
-performance tests in order to objectively measure the current packet
-transfer characteristics of a virtual switch in the NFVI. The intent of
-the project is to facilitate testing of any virtual switch. Thus, a
-generic suite of tests shall be developed, with no hard dependencies to
-a single implementation. In addition, the test case suite shall be
-architecture independent.
-
-The test cases developed in this project shall not form part of a
-separate test framework, all of these tests may be inserted into the
-Continuous Integration Test Framework and/or the Platform Functionality
-Test Framework - if a vSwitch becomes a standard component of an OPNFV
-release.
-
-.. 3.1.3
-
-References
-==========
-
-*  `RFC 1242 Benchmarking Terminology for Network Interconnection
-   Devices <http://www.ietf.org/rfc/rfc1242.txt>`__
-*  `RFC 2544 Benchmarking Methodology for Network Interconnect
-   Devices <http://www.ietf.org/rfc/rfc2544.txt>`__
-*  `RFC 2285 Benchmarking Terminology for LAN Switching
-   Devices <http://www.ietf.org/rfc/rfc2285.txt>`__
-*  `RFC 2889 Benchmarking Methodology for LAN Switching
-   Devices <http://www.ietf.org/rfc/rfc2889.txt>`__
-*  `RFC 3918 Methodology for IP Multicast
-   Benchmarking <http://www.ietf.org/rfc/rfc3918.txt>`__
-*  `RFC 4737 Packet Reordering
-   Metrics <http://www.ietf.org/rfc/rfc4737.txt>`__
-*  `RFC 5481 Packet Delay Variation Applicability
-   Statement <http://www.ietf.org/rfc/rfc5481.txt>`__
-*  `RFC 6201 Device Reset
-   Characterization <http://tools.ietf.org/html/rfc6201>`__
-
-.. 3.2
-
-.. _details-of-LTD:
-
-================================
-Details of the Level Test Design
-================================
-
-This section describes the features to be tested (FeaturesToBeTested-of-LTD_), and
-identifies the sets of test cases or scenarios (TestIdentification-of-LTD_).
-
-.. 3.2.1
-
-.. _FeaturesToBeTested-of-LTD:
-
-Features to be tested
-=====================
-
-Characterizing virtual switches (i.e. Device Under Test (DUT) in this document)
-includes measuring the following performance metrics:
-
-- Throughput
-- Packet delay
-- Packet delay variation
-- Packet loss
-- Burst behaviour
-- Packet re-ordering
-- Packet correctness
-- Availability and capacity of the DUT
-
-.. 3.2.2
-
-.. _TestIdentification-of-LTD:
-
-Test identification
-===================
-
-.. 3.2.2.1
-
-Throughput tests
-----------------
-
-The following tests aim to determine the maximum forwarding rate that
-can be achieved with a virtual switch. The list is not exhaustive but
-should indicate the type of tests that should be required. It is
-expected that more will be added.
-
-.. 3.2.2.1.1
-
-.. _PacketLossRatio:
-
-Test ID: LTD.Throughput.RFC2544.PacketLossRatio
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2544 X% packet loss ratio Throughput and Latency Test
-
-    **Prerequisite Test**: N/A
-
-    **Priority**:
-
-    **Description**:
-
-    This test determines the DUT's maximum forwarding rate with X% traffic
-    loss for a constant load (fixed length frames at a fixed interval time).
-    The default loss percentages to be tested are: - X = 0% - X = 10^-7%
-
-    Note: Other values can be tested if required by the user.
-
-    The selected frame sizes are those previously defined under
-    :ref:`default-test-parameters`.
-    The test can also be used to determine the average latency of the traffic.
-
-    Under the `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__
-    test methodology, the test duration will
-    include a number of trials; each trial should run for a minimum period
-    of 60 seconds. A binary search methodology must be applied for each
-    trial to obtain the final result.
-
-    **Expected Result**: At the end of each trial, the presence or absence
-    of loss determines the modification of offered load for the next trial,
-    converging on a maximum rate, or
-    `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ Throughput with X%
-    loss.
-    The Throughput load is re-used in related
-    `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ tests and other
-    tests.
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The maximum forwarding rate in Frames Per Second (FPS) and Mbps of
-       the DUT for each frame size with X% packet loss.
-    -  The average latency of the traffic flow when passing through the DUT
-       (if testing for latency, note that this average is different from the
-       test specified in Section 26.3 of
-       `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__).
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-.. 3.2.2.1.2
-
-.. _PacketLossRatioFrameModification:
-
-Test ID: LTD.Throughput.RFC2544.PacketLossRatioFrameModification
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2544 X% packet loss Throughput and Latency Test with
-    packet modification
-
-    **Prerequisite Test**: N/A
-
-    **Priority**:
-
-    **Description**:
-
-    This test determines the DUT's maximum forwarding rate with X% traffic
-    loss for a constant load (fixed length frames at a fixed interval time).
-    The default loss percentages to be tested are: - X = 0% - X = 10^-7%
-
-    Note: Other values can be tested if required by the user.
-
-    The selected frame sizes are those previously defined under
-    :ref:`default-test-parameters`.
-    The test can also be used to determine the average latency of the traffic.
-
-    Under the `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__
-    test methodology, the test duration will
-    include a number of trials; each trial should run for a minimum period
-    of 60 seconds. A binary search methodology must be applied for each
-    trial to obtain the final result.
-
-    During this test, the DUT must perform the following operations on the
-    traffic flow:
-
-    -  Perform packet parsing on the DUT's ingress port.
-    -  Perform any relevant address look-ups on the DUT's ingress ports.
-    -  Modify the packet header before forwarding the packet to the DUT's
-       egress port. Packet modifications include:
-
-       -  Modifying the Ethernet source or destination MAC address.
-       -  Modifying/adding a VLAN tag. (**Recommended**).
-       -  Modifying/adding a MPLS tag.
-       -  Modifying the source or destination ip address.
-       -  Modifying the TOS/DSCP field.
-       -  Modifying the source or destination ports for UDP/TCP/SCTP.
-       -  Modifying the TTL.
-
-    **Expected Result**: The Packet parsing/modifications require some
-    additional degree of processing resource, therefore the
-    `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__
-    Throughput is expected to be somewhat lower than the Throughput level
-    measured without additional steps. The reduction is expected to be
-    greatest on tests with the smallest packet sizes (greatest header
-    processing rates).
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The maximum forwarding rate in Frames Per Second (FPS) and Mbps of
-       the DUT for each frame size with X% packet loss and packet
-       modification operations being performed by the DUT.
-    -  The average latency of the traffic flow when passing through the DUT
-       (if testing for latency, note that this average is different from the
-       test specified in Section 26.3 of
-       `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__).
-    -  The `RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__
-       PDV form of delay variation on the traffic flow,
-       using the 99th percentile.
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-.. 3.2.2.1.3
-
-Test ID: LTD.Throughput.RFC2544.Profile
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2544 Throughput and Latency Profile
-
-    **Prerequisite Test**: N/A
-
-    **Priority**:
-
-    **Description**:
-
-    This test reveals how throughput and latency degrades as the offered
-    rate varies in the region of the DUT's maximum forwarding rate as
-    determined by LTD.Throughput.RFC2544.PacketLossRatio (0% Packet Loss).
-    For example it can be used to determine if the degradation of throughput
-    and latency as the offered rate increases is slow and graceful or sudden
-    and severe.
-
-    The selected frame sizes are those previously defined under
-    :ref:`default-test-parameters`.
-
-    The offered traffic rate is described as a percentage delta with respect
-    to the DUT's RFC 2544 Throughput as determined by
-    LTD.Throughput.RFC2544.PacketLoss Ratio (0% Packet Loss case). A delta
-    of 0% is equivalent to an offered traffic rate equal to the RFC 2544
-    Maximum Throughput; A delta of +50% indicates an offered rate half-way
-    between the Maximum RFC2544 Throughput and line-rate, whereas a delta of
-    -50% indicates an offered rate of half the RFC 2544 Maximum Throughput.
-    Therefore the range of the delta figure is natuarlly bounded at -100%
-    (zero offered traffic) and +100% (traffic offered at line rate).
-
-    The following deltas to the maximum forwarding rate should be applied:
-
-    -  -50%, -10%, 0%, +10% & +50%
-
-    **Expected Result**: For each packet size a profile should be produced
-    of how throughput and latency vary with offered rate.
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The forwarding rate in Frames Per Second (FPS) and Mbps of the DUT
-       for each delta to the maximum forwarding rate and for each frame
-       size.
-    -  The average latency for each delta to the maximum forwarding rate and
-       for each frame size.
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-    -  Any failures experienced (for example if the vSwitch crashes, stops
-       processing packets, restarts or becomes unresponsive to commands)
-       when the offered load is above Maximum Throughput MUST be recorded
-       and reported with the results.
-
-.. 3.2.2.1.4
-
-Test ID: LTD.Throughput.RFC2544.SystemRecoveryTime
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2544 System Recovery Time Test
-
-    **Prerequisite Test** LTD.Throughput.RFC2544.PacketLossRatio
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to determine the length of time it takes the DUT
-    to recover from an overload condition for a constant load (fixed length
-    frames at a fixed interval time). The selected frame sizes are those
-    previously defined under :ref:`default-test-parameters`,
-    traffic should be sent to the DUT under normal conditions. During the
-    duration of the test and while the traffic flows are passing though the
-    DUT, at least one situation leading to an overload condition for the DUT
-    should occur. The time from the end of the overload condition to when
-    the DUT returns to normal operations should be measured to determine
-    recovery time. Prior to overloading the DUT, one should record the
-    average latency for 10,000 packets forwarded through the DUT.
-
-    The overload condition SHOULD be to transmit traffic at a very high
-    frame rate to the DUT (150% of the maximum 0% packet loss rate as
-    determined by LTD.Throughput.RFC2544.PacketLossRatio or line-rate
-    whichever is lower), for at least 60 seconds, then reduce the frame rate
-    to 75% of the maximum 0% packet loss rate. A number of time-stamps
-    should be recorded: - Record the time-stamp at which the frame rate was
-    reduced and record a second time-stamp at the time of the last frame
-    lost. The recovery time is the difference between the two timestamps. -
-    Record the average latency for 10,000 frames after the last frame loss
-    and continue to record average latency measurements for every 10,000
-    frames, when latency returns to within 10% of pre-overload levels record
-    the time-stamp.
-
-    **Expected Result**:
-
-    **Metrics collected**
-
-    The following are the metrics collected for this test:
-
-    -  The length of time it takes the DUT to recover from an overload
-       condition.
-    -  The length of time it takes the DUT to recover the average latency to
-       pre-overload conditions.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch → physical.
-
-.. 3.2.2.1.5
-
-.. _BackToBackFrames:
-
-Test ID: LTD.Throughput.RFC2544.BackToBackFrames
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC2544 Back To Back Frames Test
-
-    **Prerequisite Test**: N
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to characterize the ability of the DUT to
-    process back-to-back frames. For each frame size previously defined
-    under :ref:`default-test-parameters`, a burst of traffic
-    is sent to the DUT with the minimum inter-frame gap between each frame.
-    If the number of received frames equals the number of frames that were
-    transmitted, the burst size should be increased and traffic is sent to
-    the DUT again. The value measured is the back-to-back value, that is the
-    maximum burst size the DUT can handle without any frame loss. Please note
-    a trial must run for a minimum of 2 seconds and should be repeated 50
-    times (at a minimum).
-
-    **Expected Result**:
-
-    Tests of back-to-back frames with physical devices have produced
-    unstable results in some cases. All tests should be repeated in multiple
-    test sessions and results stability should be examined.
-
-    **Metrics collected**
-
-    The following are the metrics collected for this test:
-
-    -  The average back-to-back value across the trials, which is
-       the number of frames in the longest burst that the DUT will
-       handle without the loss of any frames.
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch → physical.
-
-.. 3.2.2.1.6
-
-Test ID: LTD.Throughput.RFC2889.MaxForwardingRateSoak
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2889 X% packet loss Max Forwarding Rate Soak Test
-
-    **Prerequisite Test** LTD.Throughput.RFC2544.PacketLossRatio
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to understand the Max Forwarding Rate stability
-    over an extended test duration in order to uncover any outliers. To allow
-    for an extended test duration, the test should ideally run for 24 hours
-    or, if this is not possible, for at least 6 hours. For this test, each frame
-    size must be sent at the highest Throughput rate with X% packet loss, as
-    determined in the prerequisite test. The default loss percentages to be
-    tested are: - X = 0% - X = 10^-7%
-
-    Note: Other values can be tested if required by the user.
-
-    **Expected Result**:
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  Max Forwarding Rate stability of the DUT.
-
-       -  This means reporting the number of packets lost per time interval
-          and reporting any time intervals with packet loss. The
-          `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__
-          Forwarding Rate shall be measured in each interval.
-          An interval of 60s is suggested.
-
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-    -  The `RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__
-       PDV form of delay variation on the traffic flow,
-       using the 99th percentile.
-
-.. 3.2.2.1.7
-
-Test ID: LTD.Throughput.RFC2889.MaxForwardingRateSoakFrameModification
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2889 Max Forwarding Rate Soak Test with Frame Modification
-
-    **Prerequisite Test**:
-    LTD.Throughput.RFC2544.PacketLossRatioFrameModification (0% Packet Loss)
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to understand the Max Forwarding Rate stability over an
-    extended test duration in order to uncover any outliers. To allow for an
-    extended test duration, the test should ideally run for 24 hours or, if
-    this is not possible, for at least 6 hour. For this test, each frame
-    size must be sent at the highest Throughput rate with 0% packet loss, as
-    determined in the prerequisite test.
-
-    During this test, the DUT must perform the following operations on the
-    traffic flow:
-
-    -  Perform packet parsing on the DUT's ingress port.
-    -  Perform any relevant address look-ups on the DUT's ingress ports.
-    -  Modify the packet header before forwarding the packet to the DUT's
-       egress port. Packet modifications include:
-
-       -  Modifying the Ethernet source or destination MAC address.
-       -  Modifying/adding a VLAN tag (**Recommended**).
-       -  Modifying/adding a MPLS tag.
-       -  Modifying the source or destination ip address.
-       -  Modifying the TOS/DSCP field.
-       -  Modifying the source or destination ports for UDP/TCP/SCTP.
-       -  Modifying the TTL.
-
-    **Expected Result**:
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  Max Forwarding Rate stability of the DUT.
-
-       -  This means reporting the number of packets lost per time interval
-          and reporting any time intervals with packet loss. The
-          `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__
-          Forwarding Rate shall be measured in each interval.
-          An interval of 60s is suggested.
-
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-    -  The `RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__
-       PDV form of delay variation on the traffic flow, using the 99th
-       percentile.
-
-.. 3.2.2.1.8
-
-Test ID: LTD.Throughput.RFC6201.ResetTime
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 6201 Reset Time Test
-
-    **Prerequisite Test**: N/A
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to determine the length of time it takes the DUT
-    to recover from a reset.
-
-    Two reset methods are defined - planned and unplanned. A planned reset
-    requires stopping and restarting the virtual switch by the usual
-    'graceful' method defined by it's documentation. An unplanned reset
-    requires simulating a fatal internal fault in the virtual switch - for
-    example by using kill -SIGKILL on a Linux environment.
-
-    Both reset methods SHOULD be exercised.
-
-    For each frame size previously defined under :ref:`default-test-parameters`,
-    traffic should be sent to the DUT under
-    normal conditions. During the duration of the test and while the traffic
-    flows are passing through the DUT, the DUT should be reset and the Reset
-    time measured. The Reset time is the total time that a device is
-    determined to be out of operation and includes the time to perform the
-    reset and the time to recover from it (cf. `RFC6201
-    <https://www.rfc-editor.org/rfc/rfc6201.txt>`__).
-
-    `RFC6201 <https://www.rfc-editor.org/rfc/rfc6201.txt>`__ defines two methods
-    to measure the Reset time:
-
-      - Frame-Loss Method: which requires the monitoring of the number of
-        lost frames and calculates the Reset time based on the number of
-        frames lost and the offered rate according to the following
-        formula:
-
-        .. code-block:: console
-
-                                    Frames_lost (packets)
-                 Reset_time = -------------------------------------
-                                Offered_rate (packets per second)
-
-      - Timestamp Method: which measures the time from which the last frame
-        is forwarded from the DUT to the time the first frame is forwarded
-        after the reset. This involves time-stamping all transmitted frames
-        and recording the timestamp of the last frame that was received prior
-        to the reset and also measuring the timestamp of the first frame that
-        is received after the reset. The Reset time is the difference between
-        these two timestamps.
-
-    According to `RFC6201 <https://www.rfc-editor.org/rfc/rfc6201.txt>`__ the
-    choice of method depends on the test tool's capability; the Frame-Loss
-    method SHOULD be used if the test tool supports:
-
-     * Counting the number of lost frames per stream.
-     * Transmitting test frame despite the physical link status.
-
-    whereas the Timestamp method SHOULD be used if the test tool supports:
-
-     * Timestamping each frame.
-     * Monitoring received frame's timestamp.
-     * Transmitting frames only if the physical link status is up.
-
-    **Expected Result**:
-
-    **Metrics collected**
-
-    The following are the metrics collected for this test:
-
-     * Average Reset Time over the number of trials performed.
-
-    Results of this test should include the following information:
-
-     * The reset method used.
-     * Throughput in Fps and Mbps.
-     * Average Frame Loss over the number of trials performed.
-     * Average Reset Time in milliseconds over the number of trials performed.
-     * Number of trials performed.
-     * Protocol: IPv4, IPv6, MPLS, etc.
-     * Frame Size in Octets
-     * Port Media: Ethernet, Gigabit Ethernet (GbE), etc.
-     * Port Speed: 10 Gbps, 40 Gbps etc.
-     * Interface Encapsulation: Ethernet, Ethernet VLAN, etc.
-
-    **Deployment scenario**:
-
-    * Physical → virtual switch → physical.
-
-.. 3.2.2.1.9
-
-Test ID: LTD.Throughput.RFC2889.MaxForwardingRate
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC2889 Forwarding Rate Test
-
-    **Prerequisite Test**: LTD.Throughput.RFC2544.PacketLossRatio
-
-    **Priority**:
-
-    **Description**:
-
-    This test measures the DUT's Max Forwarding Rate when the Offered Load
-    is varied between the throughput and the Maximum Offered Load for fixed
-    length frames at a fixed time interval. The selected frame sizes are
-    those previously defined under :ref:`default-test-parameters`.
-    The throughput is the maximum offered
-    load with 0% frame loss (measured by the prerequisite test), and the
-    Maximum Offered Load (as defined by
-    `RFC2285 <https://www.rfc-editor.org/rfc/rfc2285.txt>`__) is *"the highest
-    number of frames per second that an external source can transmit to a
-    DUT/SUT for forwarding to a specified output interface or interfaces"*.
-
-    Traffic should be sent to the DUT at a particular rate (TX rate)
-    starting with TX rate equal to the throughput rate. The rate of
-    successfully received frames at the destination counted (in FPS). If the
-    RX rate is equal to the TX rate, the TX rate should be increased by a
-    fixed step size and the RX rate measured again until the Max Forwarding
-    Rate is found.
-
-    The trial duration for each iteration should last for the period of time
-    needed for the system to reach steady state for the frame size being
-    tested. Under `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__
-    (Sec. 5.6.3.1) test methodology, the test
-    duration should run for a minimum period of 30 seconds, regardless
-    whether the system reaches steady state before the minimum duration
-    ends.
-
-    **Expected Result**: According to
-    `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__ The Max Forwarding
-    Rate is the highest forwarding rate of a DUT taken from an iterative set of
-    forwarding rate measurements. The iterative set of forwarding rate measurements
-    are made by setting the intended load transmitted from an external source and
-    measuring the offered load (i.e what the DUT is capable of forwarding). If the
-    Throughput == the Maximum Offered Load, it follows that Max Forwarding Rate is
-    equal to the Maximum Offered Load.
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The Max Forwarding Rate for the DUT for each packet size.
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch → physical. Note: Full mesh tests with
-       multiple ingress and egress ports are a key aspect of RFC 2889
-       benchmarks, and scenarios with both 2 and 4 ports should be tested.
-       In any case, the number of ports used must be reported.
-
-.. 3.2.2.1.10
-
-Test ID: LTD.Throughput.RFC2889.ForwardPressure
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC2889 Forward Pressure Test
-
-    **Prerequisite Test**: LTD.Throughput.RFC2889.MaxForwardingRate
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to determine if the DUT transmits frames with an
-    inter-frame gap that is less than 12 bytes. This test overloads the DUT
-    and measures the output for forward pressure. Traffic should be
-    transmitted to the DUT with an inter-frame gap of 11 bytes, this will
-    overload the DUT by 1 byte per frame. The forwarding rate of the DUT
-    should be measured.
-
-    **Expected Result**: The forwarding rate should not exceed the maximum
-    forwarding rate of the DUT collected by
-    LTD.Throughput.RFC2889.MaxForwardingRate.
-
-    **Metrics collected**
-
-    The following are the metrics collected for this test:
-
-    -  Forwarding rate of the DUT in FPS or Mbps.
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch → physical.
-
-.. 3.2.2.1.11
-
-Test ID: LTD.Throughput.RFC2889.ErrorFramesFiltering
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC2889 Error Frames Filtering Test
-
-    **Prerequisite Test**: N/A
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to determine whether the DUT will propagate any
-    erroneous frames it receives or whether it is capable of filtering out
-    the erroneous frames. Traffic should be sent with erroneous frames
-    included within the flow at random intervals. Illegal frames that must
-    be tested include: - Oversize Frames. - Undersize Frames. - CRC Errored
-    Frames. - Dribble Bit Errored Frames - Alignment Errored Frames
-
-    The traffic flow exiting the DUT should be recorded and checked to
-    determine if the erroneous frames where passed through the DUT.
-
-    **Expected Result**: Broken frames are not passed!
-
-    **Metrics collected**
-
-    No Metrics are collected in this test, instead it determines:
-
-    -  Whether the DUT will propagate erroneous frames.
-    -  Or whether the DUT will correctly filter out any erroneous frames
-       from traffic flow with out removing correct frames.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch → physical.
-
-.. 3.2.2.1.12
-
-Test ID: LTD.Throughput.RFC2889.BroadcastFrameForwarding
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC2889 Broadcast Frame Forwarding Test
-
-    **Prerequisite Test**: N
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to determine the maximum forwarding rate of the
-    DUT when forwarding broadcast traffic. For each frame previously defined
-    under :ref:`default-test-parameters`, the traffic should
-    be set up as broadcast traffic. The traffic throughput of the DUT should
-    be measured.
-
-    The test should be conducted with at least 4 physical ports on the DUT.
-    The number of ports used MUST be recorded.
-
-    As broadcast involves forwarding a single incoming packet to several
-    destinations, the latency of a single packet is defined as the average
-    of the latencies for each of the broadcast destinations.
-
-    The incoming packet is transmitted on each of the other physical ports,
-    it is not transmitted on the port on which it was received. The test MAY
-    be conducted using different broadcasting ports to uncover any
-    performance differences.
-
-    **Expected Result**:
-
-    **Metrics collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The forwarding rate of the DUT when forwarding broadcast traffic.
-    -  The minimum, average & maximum packets latencies observed.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch 3x physical. In the Broadcast rate testing,
-       four test ports are required. One of the ports is connected to the test
-       device, so it can send broadcast frames and listen for miss-routed frames.
-
-.. 3.2.2.1.13
-
-Test ID: LTD.Throughput.RFC2544.WorstN-BestN
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: Modified RFC 2544 X% packet loss ratio Throughput and Latency Test
-
-    **Prerequisite Test**: N/A
-
-    **Priority**:
-
-    **Description**:
-
-    This test determines the DUT's maximum forwarding rate with X% traffic
-    loss for a constant load (fixed length frames at a fixed interval time).
-    The default loss percentages to be tested are: X = 0%, X = 10^-7%
-
-    Modified RFC 2544 throughput benchmarking methodology aims to quantify
-    the throughput measurement variations observed during standard RFC 2544
-    benchmarking measurements of virtual switches and VNFs. The RFC2544
-    binary search algorithm is modified to use more samples per test trial
-    to drive the binary search and yield statistically more meaningful
-    results. This keeps the heart of the RFC2544 methodology, still relying
-    on the binary search of throughput at specified loss tolerance, while
-    providing more useful information about the range of results seen in
-    testing. Instead of using a single traffic trial per iteration step,
-    each traffic trial is repeated N times and the success/failure of the
-    iteration step is based on these N traffic trials. Two types of revised
-    tests are defined - *Worst-of-N* and *Best-of-N*.
-
-    **Worst-of-N**
-
-    *Worst-of-N* indicates the lowest expected maximum throughput for (
-    packet size, loss tolerance) when repeating the test.
-
-    1.  Repeat the same test run N times at a set packet rate, record each
-        result.
-    2.  Take the WORST result (highest packet loss) out of N result samples,
-        called the Worst-of-N sample.
-    3.  If Worst-of-N sample has loss less than the set loss tolerance, then
-        the step is successful - increase the test traffic rate.
-    4.  If Worst-of-N sample has loss greater than the set loss tolerance
-        then the step failed - decrease the test traffic rate.
-    5.  Go to step 1.
-
-    **Best-of-N**
-
-    *Best-of-N* indicates the highest expected maximum throughput for (
-    packet size, loss tolerance) when repeating the test.
-
-    1.  Repeat the same traffic run N times at a set packet rate, record
-        each result.
-    2.  Take the BEST result (least packet loss) out of N result samples,
-        called the Best-of-N sample.
-    3.  If Best-of-N sample has loss less than the set loss tolerance, then
-        the step is successful - increase the test traffic rate.
-    4.  If Best-of-N sample has loss greater than the set loss tolerance,
-        then the step failed - decrease the test traffic rate.
-    5.  Go to step 1.
-
-    Performing both Worst-of-N and Best-of-N benchmark tests yields lower
-    and upper bounds of expected maximum throughput under the operating
-    conditions, giving a very good indication to the user of the
-    deterministic performance range for the tested setup.
-
-    **Expected Result**: At the end of each trial series, the presence or
-    absence of loss determines the modification of offered load for the
-    next trial series, converging on a maximum rate, or
-    `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ Throughput
-    with X% loss.
-    The Throughput load is re-used in related
-    `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ tests and other
-    tests.
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The maximum forwarding rate in Frames Per Second (FPS) and Mbps of
-       the DUT for each frame size with X% packet loss.
-    -  The average latency of the traffic flow when passing through the DUT
-       (if testing for latency, note that this average is different from the
-       test specified in Section 26.3 of
-       `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__).
-    -  Following may also be collected as part of this test, to determine
-       the vSwitch's performance footprint on the system:
-
-      -  CPU core utilization.
-      -  CPU cache utilization.
-      -  Memory footprint.
-      -  System bus (QPI, PCI, ...) utilization.
-      -  CPU cycles consumed per packet.
-
-.. 3.2.2.1.14
-
-Test ID: LTD.Throughput.Overlay.Network.<tech>.RFC2544.PacketLossRatio
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-       **Title**: <tech> Overlay Network RFC 2544 X% packet loss ratio Throughput and Latency Test
-
-
-       NOTE: Throughout this test, four interchangeable overlay technologies are covered by the
-       same test description.  They are: VXLAN, GRE, NVGRE and GENEVE.
-
-      **Prerequisite Test**: N/A
-
-      **Priority**:
-
-      **Description**:
-      This test evaluates standard switch performance benchmarks for the scenario where an
-      Overlay Network is deployed for all paths through the vSwitch. Overlay Technologies covered
-      (replacing <tech> in the test name) include:
-
-      - VXLAN
-      - GRE
-      - NVGRE
-      - GENEVE
-
-      Performance will be assessed for each of the following overlay network functions:
-
-      - Encapsulation only
-      - De-encapsulation only
-      - Both Encapsulation and De-encapsulation
-
-      For each native packet, the DUT must perform the following operations:
-
-      - Examine the packet and classify its correct overlay net (tunnel) assignment
-      - Encapsulate the packet
-      - Switch the packet to the correct port
-
-      For each encapsulated packet, the DUT must perform the following operations:
-
-      - Examine the packet and classify its correct native network assignment
-      - De-encapsulate the packet, if required
-      - Switch the packet to the correct port
-
-    The selected frame sizes are those previously defined under
-    :ref:`default-test-parameters`.
-
-    Thus, each test comprises an overlay technology, a network function,
-    and a packet size *with* overlay network overhead included
-    (but see also the discussion at
-    https://etherpad.opnfv.org/p/vSwitchTestsDrafts ).
-
-    The test can also be used to determine the average latency of the traffic.
-
-    Under the `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__
-    test methodology, the test duration will
-    include a number of trials; each trial should run for a minimum period
-    of 60 seconds. A binary search methodology must be applied for each
-    trial to obtain the final result for Throughput.
-
-    **Expected Result**: At the end of each trial, the presence or absence
-    of loss determines the modification of offered load for the next trial,
-    converging on a maximum rate, or
-    `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ Throughput with X%
-    loss (where the value of X is typically equal to zero).
-    The Throughput load is re-used in related
-    `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ tests and other
-    tests.
-
-    **Metrics Collected**:
-    The following are the metrics collected for this test:
-
-    -  The maximum Throughput in Frames Per Second (FPS) and Mbps of
-       the DUT for each frame size with X% packet loss.
-    -  The average latency of the traffic flow when passing through the DUT
-       and VNFs (if testing for latency, note that this average is different from the
-       test specified in Section 26.3 of
-       `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__).
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-.. 3.2.3.1.15
-
-Test ID: LTD.Throughput.RFC2544.MatchAction.PacketLossRatio
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2544 X% packet loss ratio match action Throughput and Latency Test
-
-    **Prerequisite Test**: LTD.Throughput.RFC2544.PacketLossRatio
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to determine the cost of carrying out match
-    action(s) on the DUT’s RFC2544 Throughput with X% traffic loss for
-    a constant load (fixed length frames at a fixed interval time).
-
-    Each test case requires:
-
-         * selection of a specific match action(s),
-         * specifying a percentage of total traffic that is elligible
-           for the match action,
-         * determination of the specific test configuration (number
-           of flows, number of test ports, presence of an external
-           controller, etc.), and
-         * measurement of the RFC 2544 Throughput level with X% packet
-           loss: Traffic shall be bi-directional and symmetric.
-
-    Note: It would be ideal to verify that all match action-elligible
-    traffic was forwarded to the correct port, and if forwarded to
-    an unintended port it should be considered lost.
-
-    A match action is an action that is typically carried on a frame
-    or packet that matches a set of flow classification parameters
-    (typically frame/packet header fields). A match action may or may
-    not modify a packet/frame. Match actions include [1]:
-
-         * output : outputs a packet to a particular port.
-         * normal: Subjects the packet to traditional L2/L3 processing
-           (MAC learning).
-         * flood: Outputs the packet on all switch physical ports
-           other than the port on which it was received and any ports
-           on which flooding is disabled.
-         * all: Outputs the packet on all switch physical ports other
-           than the port on which it was received.
-         * local: Outputs  the packet on the ``local port``, which
-           corresponds to the network device that has the same name as
-           the bridge.
-         * in_port: Outputs the packet on the port from which it was
-           received.
-         * Controller: Sends the packet and its metadata to the
-           OpenFlow controller as a ``packet in`` message.
-         * enqueue: Enqueues  the  packet  on the specified queue
-           within port.
-         * drop: discard the packet.
-
-   Modifications include [1]:
-
-         * mod vlan: covered by LTD.Throughput.RFC2544.PacketLossRatioFrameModification
-         * mod_dl_src: Sets the source Ethernet address.
-         * mod_dl_dst: Sets the destination Ethernet address.
-         * mod_nw_src: Sets the IPv4 source address.
-         * mod_nw_dst: Sets the IPv4 destination address.
-         * mod_tp_src: Sets the TCP or UDP or SCTP source port.
-         * mod_tp_dst: Sets the TCP or UDP or SCTP destination port.
-         * mod_nw_tos: Sets the  DSCP bits in the IPv4 ToS/DSCP or
-           IPv6 traffic class field.
-         * mod_nw_ecn: Sets the ECN bits in the appropriate IPv4 or
-           IPv6 field.
-         * mod_nw_ttl: Sets the IPv4 TTL or IPv6 hop limit field.
-
-    Note: This comprehensive list requires extensive traffic generator
-    capabilities.
-
-    The match action(s) that were applied as part of the test should be
-    reported in the final test report.
-
-    During this test, the DUT must perform the following operations on
-    the traffic flow:
-
-        * Perform packet parsing on the DUT’s ingress port.
-        * Perform any relevant address look-ups on the DUT’s ingress
-          ports.
-        * Carry out one or more of the match actions specified above.
-
-    The default loss percentages to be tested are: - X = 0% - X = 10^-7%
-    Other values can be tested if required by the user. The selected
-    frame sizes are those previously defined under
-    :ref:`default-test-parameters`.
-
-    The test can also be used to determine the average latency of the
-    traffic when a match action is applied to packets in a flow. Under
-    the RFC2544 test methodology, the test duration will include a
-    number of trials; each trial should run for a minimum period of 60
-    seconds. A binary search methodology must be applied for each
-    trial to obtain the final result.
-
-    **Expected Result:**
-
-    At the end of each trial, the presence or absence of loss
-    determines the modification of offered load for the next trial,
-    converging on a maximum rate, or RFC2544Throughput with X% loss.
-    The Throughput load is re-used in related RFC2544 tests and other
-    tests.
-
-    **Metrics Collected:**
-
-    The following are the metrics collected for this test:
-
-        * The RFC 2544 Throughput in Frames Per Second (FPS) and Mbps
-          of the DUT for each frame size with X% packet loss.
-        * The average latency of the traffic flow when passing through
-          the DUT (if testing for latency, note that this average is
-          different from the test specified in Section 26.3 ofRFC2544).
-        * CPU and memory utilization may also be collected as part of
-          this test, to determine the vSwitch’s performance footprint
-          on the system.
-
-    The metrics collected can be compared to that of the prerequisite
-    test to determine the cost of the match action(s) in the pipeline.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch → physical (and others are possible)
-
-    [1] ovs-ofctl - administer OpenFlow switches
-        [http://openvswitch.org/support/dist-docs/ovs-ofctl.8.txt ]
-
-
-.. 3.2.2.2
-
-Packet Latency tests
---------------------
-
-These tests will measure the store and forward latency as well as the packet
-delay variation for various packet types through the virtual switch. The
-following list is not exhaustive but should indicate the type of tests
-that should be required. It is expected that more will be added.
-
-.. 3.2.2.2.1
-
-Test ID: LTD.PacketLatency.InitialPacketProcessingLatency
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: Initial Packet Processing Latency
-
-    **Prerequisite Test**: N/A
-
-    **Priority**:
-
-    **Description**:
-
-    In some virtual switch architectures, the first packets of a flow will
-    take the system longer to process than subsequent packets in the flow.
-    This test determines the latency for these packets. The test will
-    measure the latency of the packets as they are processed by the
-    flow-setup-path of the DUT. There are two methods for this test, a
-    recommended method and a nalternative method that can be used if it is
-    possible to disable the fastpath of the virtual switch.
-
-    Recommended method: This test will send 64,000 packets to the DUT, each
-    belonging to a different flow. Average packet latency will be determined
-    over the 64,000 packets.
-
-    Alternative method: This test will send a single packet to the DUT after
-    a fixed interval of time. The time interval will be equivalent to the
-    amount of time it takes for a flow to time out in the virtual switch
-    plus 10%. Average packet latency will be determined over 1,000,000
-    packets.
-
-    This test is intended only for non-learning virtual switches; For learning
-    virtual switches use RFC2889.
-
-    For this test, only unidirectional traffic is required.
-
-    **Expected Result**: The average latency for the initial packet of all
-    flows should be greater than the latency of subsequent traffic.
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  Average latency of the initial packets of all flows that are
-       processed by the DUT.
-
-    **Deployment scenario**:
-
-    -  Physical → Virtual Switch → Physical.
-
-.. 3.2.2.2.2
-
-Test ID: LTD.PacketDelayVariation.RFC3393.Soak
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: Packet Delay Variation Soak Test
-
-    **Prerequisite Tests**: LTD.Throughput.RFC2544.PacketLossRatio (0% Packet Loss)
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to understand the distribution of packet delay
-    variation for different frame sizes over an extended test duration and
-    to determine if there are any outliers. To allow for an extended test
-    duration, the test should ideally run for 24 hours or, if this is not
-    possible, for at least 6 hour. For this test, each frame size must be
-    sent at the highest possible throughput with 0% packet loss, as
-    determined in the prerequisite test.
-
-    **Expected Result**:
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The packet delay variation value for traffic passing through the DUT.
-    -  The `RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__
-       PDV form of delay variation on the traffic flow,
-       using the 99th percentile, for each 60s interval during the test.
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-.. 3.2.2.3
-
-Scalability tests
------------------
-
-The general aim of these tests is to understand the impact of large flow
-table size and flow lookups on throughput. The following list is not
-exhaustive but should indicate the type of tests that should be required.
-It is expected that more will be added.
-
-.. 3.2.2.3.1
-
-.. _Scalability0PacketLoss:
-
-Test ID: LTD.Scalability.Flows.RFC2544.0PacketLoss
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2544 0% loss Flow Scalability throughput test
-
-    **Prerequisite Test**: LTD.Throughput.RFC2544.PacketLossRatio, IF the
-    delta Throughput between the single-flow RFC2544 test and this test with
-    a variable number of flows is desired.
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to measure how throughput changes as the number
-    of flows in the DUT increases. The test will measure the throughput
-    through the fastpath, as such the flows need to be installed on the DUT
-    before passing traffic.
-
-    For each frame size previously defined under :ref:`default-test-parameters`
-    and for each of the following number of flows:
-
-    -  1,000
-    -  2,000
-    -  4,000
-    -  8,000
-    -  16,000
-    -  32,000
-    -  64,000
-    -  Max supported number of flows.
-
-    This test will be conducted under two conditions following the
-    establishment of all flows as required by RFC 2544, regarding the flow
-    expiration time-out:
-
-    1) The time-out never expires during each trial.
-
-    2) The time-out expires for all flows periodically. This would require a
-    short time-out compared with flow re-appearance for a small number of
-    flows, and may not be possible for all flow conditions.
-
-    The maximum 0% packet loss Throughput should be determined in a manner
-    identical to LTD.Throughput.RFC2544.PacketLossRatio.
-
-    **Expected Result**:
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The maximum number of frames per second that can be forwarded at the
-       specified number of flows and the specified frame size, with zero
-       packet loss.
-
-.. 3.2.2.3.2
-
-Test ID: LTD.MemoryBandwidth.RFC2544.0PacketLoss.Scalability
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2544 0% loss Memory Bandwidth Scalability test
-
-    **Prerequisite Tests**: LTD.Throughput.RFC2544.PacketLossRatio, IF the
-    delta Throughput between an undisturbed RFC2544 test and this test with
-    the Throughput affected by cache and memory bandwidth contention is desired.
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to understand how the DUT's performance is
-    affected by cache sharing and memory bandwidth between processes.
-
-    During the test all cores not used by the vSwitch should be running a
-    memory intensive application. This application should read and write
-    random data to random addresses in unused physical memory. The random
-    nature of the data and addresses is intended to consume cache, exercise
-    main memory access (as opposed to cache) and exercise all memory buses
-    equally. Furthermore:
-
-    - the ratio of reads to writes should be recorded. A ratio of 1:1
-      SHOULD be used.
-    - the reads and writes MUST be of cache-line size and be cache-line aligned.
-    - in NUMA architectures memory access SHOULD be local to the core's node.
-      Whether only local memory or a mix of local and remote memory is used
-      MUST be recorded.
-    - the memory bandwidth (reads plus writes) used per-core MUST be recorded;
-      the test MUST be run with a per-core memory bandwidth equal to half the
-      maximum system memory bandwidth divided by the number of cores. The test
-      MAY be run with other values for the per-core memory bandwidth.
-    - the test MAY also be run with the memory intensive application running
-      on all cores.
-
-    Under these conditions the DUT's 0% packet loss throughput is determined
-    as per LTD.Throughput.RFC2544.PacketLossRatio.
-
-    **Expected Result**:
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The DUT's 0% packet loss throughput in the presence of cache sharing and
-       memory bandwidth between processes.
-
-.. 3.2.2.3.3
-
-Test ID: LTD.Scalability.VNF.RFC2544.PacketLossRatio
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: VNF Scalability RFC 2544 X% packet loss ratio Throughput and
-               Latency Test
-
-    **Prerequisite Test**: N/A
-
-    **Priority**:
-
-    **Description**:
-
-    This test determines the DUT's throughput rate with X% traffic loss for
-    a constant load (fixed length frames at a fixed interval time) when the
-    number of VNFs on the DUT increases. The default loss percentages
-    to be tested are: - X = 0% - X = 10^-7% . The minimum number of
-    VNFs to be tested are 3.
-
-    Flow classification should be conducted with L2, L3 and L4 matching
-    to understand the matching and scaling capability of the vSwitch. The
-    matching fields which were used as part of the test should be reported
-    as part of the benchmark report.
-
-    The vSwitch is responsible for forwarding frames between the VNFs
-
-    The SUT (vSwitch and VNF daisy chain) operation should be validated
-    before running the test. This may be completed by running a burst or
-    continuous stream of traffic through the SUT to ensure proper operation
-    before a test.
-
-    **Note**: The traffic rate used to validate SUT operation should be low
-    enough not to stress the SUT.
-
-    **Note**: Other values can be tested if required by the user.
-
-    **Note**: The same VNF should be used in the "daisy chain" formation.
-    Each addition of a VNF should be conducted in a new test setup (The DUT
-    is brought down, then the DUT is brought up again). An atlernative approach
-    would be to continue to add VNFs without bringing down the DUT. The
-    approach used needs to be documented as part of the test report.
-
-    The selected frame sizes are those previously defined under
-    :ref:`default-test-parameters`.
-    The test can also be used to determine the average latency of the traffic.
-
-    Under the `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__
-    test methodology, the test duration will
-    include a number of trials; each trial should run for a minimum period
-    of 60 seconds. A binary search methodology must be applied for each
-    trial to obtain the final result for Throughput.
-
-    **Expected Result**: At the end of each trial, the presence or absence
-    of loss determines the modification of offered load for the next trial,
-    converging on a maximum rate, or
-    `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ Throughput with X%
-    loss.
-    The Throughput load is re-used in related
-    `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ tests and other
-    tests.
-
-    If the test VNFs are rather light-weight in terms of processing, the test
-    provides a view of multiple passes through the vswitch on logical
-    interfaces. In other words, the test produces an optimistic count of
-    daisy-chained VNFs, but the cumulative effect of traffic on the vSwitch is
-    "real" (assuming that the vSwitch has some dedicated resources, and the
-    effects on shared resources is understood).
-
-
-    **Metrics Collected**:
-    The following are the metrics collected for this test:
-
-    -  The maximum Throughput in Frames Per Second (FPS) and Mbps of
-       the DUT for each frame size with X% packet loss.
-    -  The average latency of the traffic flow when passing through the DUT
-       and VNFs (if testing for latency, note that this average is different from the
-       test specified in Section 26.3 of
-       `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__).
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-.. 3.2.2.3.4
-
-Test ID: LTD.Scalability.VNF.RFC2544.PacketLossProfile
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-     **Title**: VNF Scalability RFC 2544 Throughput and Latency Profile
-
-     **Prerequisite Test**: N/A
-
-     **Priority**:
-
-     **Description**:
-
-     This test reveals how throughput and latency degrades as the number
-     of VNFs increases and offered rate varies in the region of the DUT's
-     maximum forwarding rate as determined by
-     LTD.Throughput.RFC2544.PacketLossRatio (0% Packet Loss).
-     For example it can be used to determine if the degradation of throughput
-     and latency as the number of VNFs and offered rate increases is slow
-     and graceful, or sudden and severe. The minimum number of VNFs to
-     be tested is 3.
-
-     The selected frame sizes are those previously defined under
-     :ref:`default-test-parameters`.
-
-     The offered traffic rate is described as a percentage delta with respect
-     to the DUT's RFC 2544 Throughput as determined by
-     LTD.Throughput.RFC2544.PacketLoss Ratio (0% Packet Loss case). A delta
-     of 0% is equivalent to an offered traffic rate equal to the RFC 2544
-     Throughput; A delta of +50% indicates an offered rate half-way
-     between the Throughput and line-rate, whereas a delta of
-     -50% indicates an offered rate of half the maximum rate. Therefore the
-     range of the delta figure is natuarlly bounded at -100% (zero offered
-     traffic) and +100% (traffic offered at line rate).
-
-     The following deltas to the maximum forwarding rate should be applied:
-
-     -  -50%, -10%, 0%, +10% & +50%
-
-    **Note**: Other values can be tested if required by the user.
-
-    **Note**: The same VNF should be used in the "daisy chain" formation.
-    Each addition of a VNF should be conducted in a new test setup (The DUT
-    is brought down, then the DUT is brought up again). An atlernative approach
-    would be to continue to add VNFs without bringing down the DUT. The
-    approach used needs to be documented as part of the test report.
-
-    Flow classification should be conducted with L2, L3 and L4 matching
-    to understand the matching and scaling capability of the vSwitch. The
-    matching fields which were used as part of the test should be reported
-    as part of the benchmark report.
-
-    The SUT (vSwitch and VNF daisy chain) operation should be validated
-    before running the test. This may be completed by running a burst or
-    continuous stream of traffic through the SUT to ensure proper operation
-    before a test.
-
-    **Note**: the traffic rate used to validate SUT operation should be low
-    enough not to stress the SUT
-
-    **Expected Result**: For each packet size a profile should be produced
-    of how throughput and latency vary with offered rate.
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The forwarding rate in Frames Per Second (FPS) and Mbps of the DUT
-       for each delta to the maximum forwarding rate and for each frame
-       size.
-    -  The average latency for each delta to the maximum forwarding rate and
-       for each frame size.
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-    -  Any failures experienced (for example if the vSwitch crashes, stops
-       processing packets, restarts or becomes unresponsive to commands)
-       when the offered load is above Maximum Throughput MUST be recorded
-       and reported with the results.
-
-.. 3.2.2.4
-
-Activation tests
-----------------
-
-The general aim of these tests is to understand the capacity of the
-and speed with which the vswitch can accommodate new flows.
-
-.. 3.2.2.4.1
-
-Test ID: LTD.Activation.RFC2889.AddressCachingCapacity
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC2889 Address Caching Capacity Test
-
-    **Prerequisite Test**: N/A
-
-    **Priority**:
-
-    **Description**:
-
-    Please note this test is only applicable to virtual switches that are capable of
-    MAC learning. The aim of this test is to determine the address caching
-    capacity of the DUT for a constant load (fixed length frames at a fixed
-    interval time). The selected frame sizes are those previously defined
-    under :ref:`default-test-parameters`.
-
-    In order to run this test the aging time, that is the maximum time the
-    DUT will keep a learned address in its flow table, and a set of initial
-    addresses, whose value should be >= 1 and <= the max number supported by
-    the implementation must be known. Please note that if the aging time is
-    configurable it must be longer than the time necessary to produce frames
-    from the external source at the specified rate. If the aging time is
-    fixed the frame rate must be brought down to a value that the external
-    source can produce in a time that is less than the aging time.
-
-    Learning Frames should be sent from an external source to the DUT to
-    install a number of flows. The Learning Frames must have a fixed
-    destination address and must vary the source address of the frames. The
-    DUT should install flows in its flow table based on the varying source
-    addresses. Frames should then be transmitted from an external source at
-    a suitable frame rate to see if the DUT has properly learned all of the
-    addresses. If there is no frame loss and no flooding, the number of
-    addresses sent to the DUT should be increased and the test is repeated
-    until the max number of cached addresses supported by the DUT
-    determined.
-
-    **Expected Result**:
-
-    **Metrics collected**:
-
-    The following are the metrics collected for this test:
-
-    -  Number of cached addresses supported by the DUT.
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch → 2 x physical (one receiving, one listening).
-
-.. 3.2.2.4.2
-
-Test ID: LTD.Activation.RFC2889.AddressLearningRate
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC2889 Address Learning Rate Test
-
-    **Prerequisite Test**: LTD.Memory.RFC2889.AddressCachingCapacity
-
-    **Priority**:
-
-    **Description**:
-
-    Please note this test is only applicable to virtual switches that are capable of
-    MAC learning. The aim of this test is to determine the rate of address
-    learning of the DUT for a constant load (fixed length frames at a fixed
-    interval time). The selected frame sizes are those previously defined
-    under :ref:`default-test-parameters`, traffic should be
-    sent with each IPv4/IPv6 address incremented by one. The rate at which
-    the DUT learns a new address should be measured. The maximum caching
-    capacity from LTD.Memory.RFC2889.AddressCachingCapacity should be taken
-    into consideration as the maximum number of addresses for which the
-    learning rate can be obtained.
-
-    **Expected Result**: It may be worthwhile to report the behaviour when
-    operating beyond address capacity - some DUTs may be more friendly to
-    new addresses than others.
-
-    **Metrics collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The address learning rate of the DUT.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch → 2 x physical (one receiving, one listening).
-
-.. 3.2.2.5
-
-Coupling between control path and datapath Tests
-------------------------------------------------
-
-The following tests aim to determine how tightly coupled the datapath
-and the control path are within a virtual switch. The following list
-is not exhaustive but should indicate the type of tests that should be
-required. It is expected that more will be added.
-
-.. 3.2.2.5.1
-
-Test ID: LTD.CPDPCouplingFlowAddition
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: Control Path and Datapath Coupling
-
-    **Prerequisite Test**:
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to understand how exercising the DUT's control
-    path affects datapath performance.
-
-    Initially a certain number of flow table entries are installed in the
-    vSwitch. Then over the duration of an RFC2544 throughput test
-    flow-entries are added and removed at the rates specified below. No
-    traffic is 'hitting' these flow-entries, they are simply added and
-    removed.
-
-    The test MUST be repeated with the following initial number of
-    flow-entries installed: - < 10 - 1000 - 100,000 - 10,000,000 (or the
-    maximum supported number of flow-entries)
-
-    The test MUST be repeated with the following rates of flow-entry
-    addition and deletion per second: - 0 - 1 (i.e. 1 addition plus 1
-    deletion) - 100 - 10,000
-
-    **Expected Result**:
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  The maximum forwarding rate in Frames Per Second (FPS) and Mbps of
-       the DUT.
-    -  The average latency of the traffic flow when passing through the DUT
-       (if testing for latency, note that this average is different from the
-       test specified in Section 26.3 of
-       `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__).
-    -  CPU and memory utilization may also be collected as part of this
-       test, to determine the vSwitch's performance footprint on the system.
-
-    **Deployment scenario**:
-
-    -  Physical → virtual switch → physical.
-
-.. 3.2.2.6
-
-CPU and memory consumption
---------------------------
-
-The following tests will profile a virtual switch's CPU and memory
-utilization under various loads and circumstances. The following
-list is not exhaustive but should indicate the type of tests that
-should be required. It is expected that more will be added.
-
-.. 3.2.2.6.1
-
-.. _CPU0PacketLoss:
-
-Test ID: LTD.Stress.RFC2544.0PacketLoss
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    **Title**: RFC 2544 0% Loss CPU OR Memory Stress Test
-
-    **Prerequisite Test**:
-
-    **Priority**:
-
-    **Description**:
-
-    The aim of this test is to understand the overall performance of the
-    system when a CPU or Memory intensive application is run on the same DUT as
-    the Virtual Switch. For each frame size, an
-    LTD.Throughput.RFC2544.PacketLossRatio (0% Packet Loss) test should be
-    performed. Throughout the entire test a CPU or Memory intensive application
-    should be run on all cores on the system not in use by the Virtual Switch.
-    For NUMA system only cores on the same NUMA node are loaded.
-
-    It is recommended that stress-ng be used for loading the non-Virtual
-    Switch cores but any stress tool MAY be used.
-
-    **Expected Result**:
-
-    **Metrics Collected**:
-
-    The following are the metrics collected for this test:
-
-    -  Memory and CPU utilization of the cores running the Virtual Switch.
-    -  The number of identity of the cores allocated to the Virtual Switch.
-    -  The configuration of the stress tool (for example the command line
-       parameters used to start it.)
-
-    **Note:** Stress in the test ID can be replaced with the name of the
-              component being stressed, when reporting the results:
-              LTD.CPU.RFC2544.0PacketLoss or LTD.Memory.RFC2544.0PacketLoss
-
-.. 3.2.2.7
-
-Summary List of Tests
----------------------
-
-1. Throughput tests
-
-  - Test ID: LTD.Throughput.RFC2544.PacketLossRatio
-  - Test ID: LTD.Throughput.RFC2544.PacketLossRatioFrameModification
-  - Test ID: LTD.Throughput.RFC2544.Profile
-  - Test ID: LTD.Throughput.RFC2544.SystemRecoveryTime
-  - Test ID: LTD.Throughput.RFC2544.BackToBackFrames
-  - Test ID: LTD.Throughput.RFC2889.Soak
-  - Test ID: LTD.Throughput.RFC2889.SoakFrameModification
-  - Test ID: LTD.Throughput.RFC6201.ResetTime
-  - Test ID: LTD.Throughput.RFC2889.MaxForwardingRate
-  - Test ID: LTD.Throughput.RFC2889.ForwardPressure
-  - Test ID: LTD.Throughput.RFC2889.ErrorFramesFiltering
-  - Test ID: LTD.Throughput.RFC2889.BroadcastFrameForwarding
-  - Test ID: LTD.Throughput.RFC2544.WorstN-BestN
-  - Test ID: LTD.Throughput.Overlay.Network.<tech>.RFC2544.PacketLossRatio
-
-2. Packet Latency tests
-
-  - Test ID: LTD.PacketLatency.InitialPacketProcessingLatency
-  - Test ID: LTD.PacketDelayVariation.RFC3393.Soak
-
-3. Scalability tests
-
-  - Test ID: LTD.Scalability.Flows.RFC2544.0PacketLoss
-  - Test ID: LTD.MemoryBandwidth.RFC2544.0PacketLoss.Scalability
-  - LTD.Scalability.VNF.RFC2544.PacketLossProfile
-  - LTD.Scalability.VNF.RFC2544.PacketLossRatio
-
-4. Activation tests
-
-  - Test ID: LTD.Activation.RFC2889.AddressCachingCapacity
-  - Test ID: LTD.Activation.RFC2889.AddressLearningRate
-
-5. Coupling between control path and datapath Tests
-
-  - Test ID: LTD.CPDPCouplingFlowAddition
-
-6. CPU and memory consumption
-
-  - Test ID: LTD.Stress.RFC2544.0PacketLoss
diff --git a/docs/requirements/vswitchperf_ltp.rst b/docs/requirements/vswitchperf_ltp.rst
deleted file mode 100644
index 2b74d676..00000000
--- a/docs/requirements/vswitchperf_ltp.rst
+++ /dev/null
@@ -1,1348 +0,0 @@
-.. This work is licensed under a Creative Commons Attribution 4.0 International License.
-.. http://creativecommons.org/licenses/by/4.0
-.. (c) OPNFV, Intel Corporation, AT&T and others.
-
-.. 3.1
-
-*****************************
-VSPERF LEVEL TEST PLAN (LTP)
-*****************************
-
-===============
-Introduction
-===============
-
-The objective of the OPNFV project titled
-**Characterize vSwitch Performance for Telco NFV Use Cases**, is to
-evaluate the performance of virtual switches to identify its suitability for a
-Telco Network Function Virtualization (NFV) environment. The intention of this
-Level Test Plan (LTP) document is to specify the scope, approach, resources,
-and schedule of the virtual switch performance benchmarking activities in
-OPNFV. The test cases will be identified in a separate document called the
-Level Test Design (LTD) document.
-
-This document is currently in draft form.
-
-.. 3.1.1
-
-
-.. _doc-id:
-
-Document identifier
-=========================
-
-The document id will be used to uniquely identify versions of the LTP. The
-format for the document id will be: OPNFV\_vswitchperf\_LTP\_REL\_STATUS, where
-by the status is one of: draft, reviewed, corrected or final. The document id
-for this version of the LTP is: OPNFV\_vswitchperf\_LTP\_Colorado\_REVIEWED.
-
-.. 3.1.2
-
-.. _scope:
-
-Scope
-==========
-
-The main purpose of this project is to specify a suite of
-performance tests in order to objectively measure the current packet
-transfer characteristics of a virtual switch in the NFVI. The intent of
-the project is to facilitate the performance testing of any virtual switch.
-Thus, a generic suite of tests shall be developed, with no hard dependencies to
-a single implementation. In addition, the test case suite shall be
-architecture independent.
-
-The test cases developed in this project shall not form part of a
-separate test framework, all of these tests may be inserted into the
-Continuous Integration Test Framework and/or the Platform Functionality
-Test Framework - if a vSwitch becomes a standard component of an OPNFV
-release.
-
-.. 3.1.3
-
-References
-===============
-
-*  `RFC 1242 Benchmarking Terminology for Network Interconnection
-   Devices <http://www.ietf.org/rfc/rfc1242.txt>`__
-*  `RFC 2544 Benchmarking Methodology for Network Interconnect
-   Devices <http://www.ietf.org/rfc/rfc2544.txt>`__
-*  `RFC 2285 Benchmarking Terminology for LAN Switching
-   Devices <http://www.ietf.org/rfc/rfc2285.txt>`__
-*  `RFC 2889 Benchmarking Methodology for LAN Switching
-   Devices <http://www.ietf.org/rfc/rfc2889.txt>`__
-*  `RFC 3918 Methodology for IP Multicast
-   Benchmarking <http://www.ietf.org/rfc/rfc3918.txt>`__
-*  `RFC 4737 Packet Reordering
-   Metrics <http://www.ietf.org/rfc/rfc4737.txt>`__
-*  `RFC 5481 Packet Delay Variation Applicability
-   Statement <http://www.ietf.org/rfc/rfc5481.txt>`__
-*  `RFC 6201 Device Reset
-   Characterization <http://tools.ietf.org/html/rfc6201>`__
-
-.. 3.1.4
-
-Level in the overall sequence
-===============================
-The level of testing conducted by vswitchperf in the overall testing sequence (among
-all the testing projects in OPNFV) is the performance benchmarking of a
-specific component (the vswitch) in the OPNFV platfrom. It's expected that this
-testing will follow on from the functional and integration testing conducted by
-other testing projects in OPNFV, namely Functest and Yardstick.
-
-.. 3.1.5
-
-Test classes and overall test conditions
-=========================================
-A benchmark is defined by the IETF as: A standardized test that serves as a
-basis for performance evaluation and comparison. It's important to note that
-benchmarks are not Functional tests. They do not provide PASS/FAIL criteria,
-and most importantly ARE NOT performed on live networks, or performed with live
-network traffic.
-
-In order to determine the packet transfer characteristics of a virtual switch,
-the benchmarking tests will be broken down into the following categories:
-
-- **Throughput Tests** to measure the maximum forwarding rate (in
-  frames per second or fps) and bit rate (in Mbps) for a constant load
-  (as defined by `RFC1242 <https://www.rfc-editor.org/rfc/rfc1242.txt>`__)
-  without traffic loss.
-- **Packet and Frame Delay Tests** to measure average, min and max
-  packet and frame delay for constant loads.
-- **Stream Performance Tests** (TCP, UDP) to measure bulk data transfer
-  performance, i.e. how fast systems can send and receive data through
-  the virtual switch.
-- **Request/Response Performance** Tests (TCP, UDP) the measure the
-  transaction rate through the virtual switch.
-- **Packet Delay Tests** to understand latency distribution for
-  different packet sizes and over an extended test run to uncover
-  outliers.
-- **Scalability Tests** to understand how the virtual switch performs
-  as the number of flows, active ports, complexity of the forwarding
-  logic's configuration... it has to deal with increases.
-- **Control Path and Datapath Coupling** Tests, to understand how
-  closely coupled the datapath and the control path are as well as the
-  effect of this coupling on the performance of the DUT.
-- **CPU and Memory Consumption Tests** to understand the virtual
-  switch’s footprint on the system, this includes:
-
-  * CPU core utilization.
-  * CPU cache utilization.
-  * Memory footprint.
-  * System bus (QPI, PCI, ..) utilization.
-  * Memory lanes utilization.
-  * CPU cycles consumed per packet.
-  * Time To Establish Flows Tests.
-
-- **Noisy Neighbour Tests**, to understand the effects of resource
-  sharing on the performance of a virtual switch.
-
-**Note:** some of the tests above can be conducted simultaneously where
-the combined results would be insightful, for example Packet/Frame Delay
-and Scalability.
-
-
-
-.. 3.2
-
-.. _details-of-LTP:
-
-===================================
-Details of the Level Test Plan
-===================================
-
-This section describes the following items:
-* Test items and their identifiers (TestItems_)
-* Test Traceability Matrix (TestMatrix_)
-* Features to be tested (FeaturesToBeTested_)
-* Features not to be tested (FeaturesNotToBeTested_)
-* Approach (Approach_)
-* Item pass/fail criteria (PassFailCriteria_)
-* Suspension criteria and resumption requirements (SuspensionResumptionReqs_)
-
-.. 3.2.1
-
-.. _TestItems:
-
-Test items and their identifiers
-==================================
-The test item/application vsperf is trying to test are virtual switches and in
-particular their performance in an nfv environment. vsperf will first try to
-measure the maximum achievable performance by a virtual switch and then it will
-focus in on usecases that are as close to real life deployment scenarios as
-possible.
-
-.. 3.2.2
-
-.. _TestMatrix:
-
-Test Traceability Matrix
-==========================
-vswitchperf leverages the "3x3" matrix (introduced in
-https://tools.ietf.org/html/draft-ietf-bmwg-virtual-net-02) to achieve test
-traceability. The matrix was expanded to 3x4 to accommodate scale metrics when
-displaying the coverage of many metrics/benchmarks). Test case covreage in the
-LTD is tracked using the following catagories:
-
-
-+---------------+-------------+------------+---------------+-------------+
-|               |             |            |               |             |
-|               |   SPEED     |  ACCURACY  |  RELIABILITY  |    SCALE    |
-|               |             |            |               |             |
-+---------------+-------------+------------+---------------+-------------+
-|               |             |            |               |             |
-|  Activation   |      X      |     X      |       X       |      X      |
-|               |             |            |               |             |
-+---------------+-------------+------------+---------------+-------------+
-|               |             |            |               |             |
-|  Operation    |      X      |      X     |       X       |      X      |
-|               |             |            |               |             |
-+---------------+-------------+------------+---------------+-------------+
-|               |             |            |               |             |
-| De-activation |             |            |               |             |
-|               |             |            |               |             |
-+---------------+-------------+------------+---------------+-------------+
-
-X = denotes a test catagory that has 1 or more test cases defined.
-
-.. 3.2.3
-
-.. _FeaturesToBeTested:
-
-Features to be tested
-==========================
-
-Characterizing virtual switches (i.e. Device Under Test (DUT) in this document)
-includes measuring the following performance metrics:
-
-- **Throughput** as defined by `RFC1242
-  <https://www.rfc-editor.org/rfc/rfc1242.txt>`__: The maximum rate at which
-  **none** of the offered frames are dropped by the DUT. The maximum frame
-  rate and bit rate that can be transmitted by the DUT without any error
-  should be recorded. Note there is an equivalent bit rate and a specific
-  layer at which the payloads contribute to the bits. Errors and
-  improperly formed frames or packets are dropped.
-- **Packet delay** introduced by the DUT and its cumulative effect on
-  E2E networks. Frame delay can be measured equivalently.
-- **Packet delay variation**: measured from the perspective of the
-  VNF/application. Packet delay variation is sometimes called "jitter".
-  However, we will avoid the term "jitter" as the term holds different
-  meaning to different groups of people. In this document we will
-  simply use the term packet delay variation. The preferred form for this
-  metric is the PDV form of delay variation defined in `RFC5481
-  <https://www.rfc-editor.org/rfc/rfc5481.txt>`__. The most relevant
-  measurement of PDV considers the delay variation of a single user flow,
-  as this will be relevant to the size of end-system buffers to compensate
-  for delay variation. The measurement system's ability to store the
-  delays of individual packets in the flow of interest is a key factor
-  that determines the specific measurement method. At the outset, it is
-  ideal to view the complete PDV distribution. Systems that can capture
-  and store packets and their delays have the freedom to calculate the
-  reference minimum delay and to determine various quantiles of the PDV
-  distribution accurately (in post-measurement processing routines).
-  Systems without storage must apply algorithms to calculate delay and
-  statistical measurements on the fly. For example, a system may store
-  temporary estimates of the mimimum delay and the set of (100) packets
-  with the longest delays during measurement (to calculate a high quantile,
-  and update these sets with new values periodically.
-  In some cases, a limited number of delay histogram bins will be
-  available, and the bin limits will need to be set using results from
-  repeated experiments. See section 8 of `RFC5481
-  <https://www.rfc-editor.org/rfc/rfc5481.txt>`__.
-- **Packet loss** (within a configured waiting time at the receiver): All
-  packets sent to the DUT should be accounted for.
-- **Burst behaviour**: measures the ability of the DUT to buffer packets.
-- **Packet re-ordering**: measures the ability of the device under test to
-  maintain sending order throughout transfer to the destination.
-- **Packet correctness**: packets or Frames must be well-formed, in that
-  they include all required fields, conform to length requirements, pass
-  integrity checks, etc.
-- **Availability and capacity** of the DUT i.e. when the DUT is fully “up”
-  and connected, following measurements should be captured for
-  DUT without any network packet load:
-
-  - Includes average power consumption of the CPUs (in various power states) and
-    system over specified period of time. Time period should not be less
-    than 60 seconds.
-  - Includes average per core CPU utilization over specified period of time.
-    Time period should not be less than 60 seconds.
-  - Includes the number of NIC interfaces supported.
-  - Includes headroom of VM workload processing cores (i.e. available
-    for applications).
-
-.. 3.2.4
-
-.. _FeaturesNotToBeTested:
-
-Features not to be tested
-==========================
-vsperf doesn't intend to define or perform any functional tests. The aim is to
-focus on performance.
-
-.. 3.2.5
-
-.. _Approach:
-
-Approach
-==============
-The testing approach adoped by the vswitchperf project is black box testing,
-meaning the test inputs can be generated and the outputs captured and
-completely evaluated from the outside of the System Under Test. Some metrics
-can be collected on the SUT, such as cpu or memory utilization if the
-collection has no/minimal impact on benchmark.
-This section will look at the deployment scenarios and the general methodology
-used by vswitchperf. In addition, this section will also specify the details of
-the Test Report that must be collected for each of the test cases.
-
-.. 3.2.5.1
-
-Deployment Scenarios
---------------------------
-The following represents possible deployment test scenarios which can
-help to determine the performance of both the virtual switch and the
-datapaths to physical ports (to NICs) and to logical ports (to VNFs):
-
-.. 3.2.5.1.1
-
-.. _Phy2Phy:
-
-Physical port → vSwitch → physical port
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-.. code-block:: console
-
-                                                            _
-       +--------------------------------------------------+  |
-       |              +--------------------+              |  |
-       |              |                    |              |  |
-       |              |                    v              |  |  Host
-       |   +--------------+            +--------------+   |  |
-       |   |   phy port   |  vSwitch   |   phy port   |   |  |
-       +---+--------------+------------+--------------+---+ _|
-                  ^                           :
-                  |                           |
-                  :                           v
-       +--------------------------------------------------+
-       |                                                  |
-       |                traffic generator                 |
-       |                                                  |
-       +--------------------------------------------------+
-
-.. 3.2.5.1.2
-
-.. _PVP:
-
-Physical port → vSwitch → VNF → vSwitch → physical port
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-.. code-block:: console
-
-                                                             _
-       +---------------------------------------------------+  |
-       |                                                   |  |
-       |   +-------------------------------------------+   |  |
-       |   |                 Application               |   |  |
-       |   +-------------------------------------------+   |  |
-       |       ^                                  :        |  |
-       |       |                                  |        |  |  Guest
-       |       :                                  v        |  |
-       |   +---------------+           +---------------+   |  |
-       |   | logical port 0|           | logical port 1|   |  |
-       +---+---------------+-----------+---------------+---+ _|
-               ^                                  :
-               |                                  |
-               :                                  v         _
-       +---+---------------+----------+---------------+---+  |
-       |   | logical port 0|          | logical port 1|   |  |
-       |   +---------------+          +---------------+   |  |
-       |       ^                                  :       |  |
-       |       |                                  |       |  |  Host
-       |       :                                  v       |  |
-       |   +--------------+            +--------------+   |  |
-       |   |   phy port   |  vSwitch   |   phy port   |   |  |
-       +---+--------------+------------+--------------+---+ _|
-                  ^                           :
-                  |                           |
-                  :                           v
-       +--------------------------------------------------+
-       |                                                  |
-       |                traffic generator                 |
-       |                                                  |
-       +--------------------------------------------------+
-
-.. 3.2.5.1.3
-
-.. _PVVP:
-
-Physical port → vSwitch → VNF → vSwitch → VNF → vSwitch → physical port
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: console
-
-                                                       _
-    +----------------------+  +----------------------+  |
-    |   Guest 1            |  |   Guest 2            |  |
-    |   +---------------+  |  |   +---------------+  |  |
-    |   |  Application  |  |  |   |  Application  |  |  |
-    |   +---------------+  |  |   +---------------+  |  |
-    |       ^       |      |  |       ^       |      |  |
-    |       |       v      |  |       |       v      |  |  Guests
-    |   +---------------+  |  |   +---------------+  |  |
-    |   | logical ports |  |  |   | logical ports |  |  |
-    |   |   0       1   |  |  |   |   0       1   |  |  |
-    +---+---------------+--+  +---+---------------+--+ _|
-            ^       :                 ^       :
-            |       |                 |       |
-            :       v                 :       v        _
-    +---+---------------+---------+---------------+--+  |
-    |   |   0       1   |         |   3       4   |  |  |
-    |   | logical ports |         | logical ports |  |  |
-    |   +---------------+         +---------------+  |  |
-    |       ^       |                 ^       |      |  |  Host
-    |       |       L-----------------+       v      |  |
-    |   +--------------+          +--------------+   |  |
-    |   |   phy ports  | vSwitch  |   phy ports  |   |  |
-    +---+--------------+----------+--------------+---+ _|
-            ^       ^                 :       :
-            |       |                 |       |
-            :       :                 v       v
-    +--------------------------------------------------+
-    |                                                  |
-    |                traffic generator                 |
-    |                                                  |
-    +--------------------------------------------------+
-
-.. 3.2.5.1.4
-
-Physical port → VNF → vSwitch → VNF → physical port
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: console
-
-                                                        _
-    +----------------------+  +----------------------+   |
-    |   Guest 1            |  |   Guest 2            |   |
-    |+-------------------+ |  | +-------------------+|   |
-    ||     Application   | |  | |     Application   ||   |
-    |+-------------------+ |  | +-------------------+|   |
-    |       ^       |      |  |       ^       |      |   |  Guests
-    |       |       v      |  |       |       v      |   |
-    |+-------------------+ |  | +-------------------+|   |
-    ||   logical ports   | |  | |   logical ports   ||   |
-    ||  0              1 | |  | | 0              1  ||   |
-    ++--------------------++  ++--------------------++  _|
-        ^              :          ^              :
-    (PCI passthrough)  |          |     (PCI passthrough)
-        |              v          :              |      _
-    +--------++------------+-+------------++---------+   |
-    |   |    ||        0   | |    1       ||     |   |   |
-    |   |    ||logical port| |logical port||     |   |   |
-    |   |    |+------------+ +------------+|     |   |   |
-    |   |    |     |                 ^     |     |   |   |
-    |   |    |     L-----------------+     |     |   |   |
-    |   |    |                             |     |   |   |  Host
-    |   |    |           vSwitch           |     |   |   |
-    |   |    +-----------------------------+     |   |   |
-    |   |                                        |   |   |
-    |   |                                        v   |   |
-    | +--------------+              +--------------+ |   |
-    | | phy port/VF  |              | phy port/VF  | |   |
-    +-+--------------+--------------+--------------+-+  _|
-        ^                                        :
-        |                                        |
-        :                                        v
-    +--------------------------------------------------+
-    |                                                  |
-    |                traffic generator                 |
-    |                                                  |
-    +--------------------------------------------------+
-
-.. 3.2.5.1.5
-
-Physical port → vSwitch → VNF
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: console
-
-                                                          _
-    +---------------------------------------------------+  |
-    |                                                   |  |
-    |   +-------------------------------------------+   |  |
-    |   |                 Application               |   |  |
-    |   +-------------------------------------------+   |  |
-    |       ^                                           |  |
-    |       |                                           |  |  Guest
-    |       :                                           |  |
-    |   +---------------+                               |  |
-    |   | logical port 0|                               |  |
-    +---+---------------+-------------------------------+ _|
-            ^
-            |
-            :                                            _
-    +---+---------------+------------------------------+  |
-    |   | logical port 0|                              |  |
-    |   +---------------+                              |  |
-    |       ^                                          |  |
-    |       |                                          |  |  Host
-    |       :                                          |  |
-    |   +--------------+                               |  |
-    |   |   phy port   |  vSwitch                      |  |
-    +---+--------------+------------ -------------- ---+ _|
-               ^
-               |
-               :
-    +--------------------------------------------------+
-    |                                                  |
-    |                traffic generator                 |
-    |                                                  |
-    +--------------------------------------------------+
-
-.. 3.2.5.1.6
-
-VNF → vSwitch → physical port
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: console
-
-                                                          _
-    +---------------------------------------------------+  |
-    |                                                   |  |
-    |   +-------------------------------------------+   |  |
-    |   |                 Application               |   |  |
-    |   +-------------------------------------------+   |  |
-    |                                          :        |  |
-    |                                          |        |  |  Guest
-    |                                          v        |  |
-    |                               +---------------+   |  |
-    |                               | logical port  |   |  |
-    +-------------------------------+---------------+---+ _|
-                                               :
-                                               |
-                                               v         _
-    +------------------------------+---------------+---+  |
-    |                              | logical port  |   |  |
-    |                              +---------------+   |  |
-    |                                          :       |  |
-    |                                          |       |  |  Host
-    |                                          v       |  |
-    |                               +--------------+   |  |
-    |                     vSwitch   |   phy port   |   |  |
-    +-------------------------------+--------------+---+ _|
-                                           :
-                                           |
-                                           v
-    +--------------------------------------------------+
-    |                                                  |
-    |                traffic generator                 |
-    |                                                  |
-    +--------------------------------------------------+
-
-.. 3.2.5.1.7
-
-VNF → vSwitch → VNF → vSwitch
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: console
-
-                                                             _
-    +-------------------------+  +-------------------------+  |
-    |   Guest 1               |  |   Guest 2               |  |
-    |   +-----------------+   |  |   +-----------------+   |  |
-    |   |   Application   |   |  |   |   Application   |   |  |
-    |   +-----------------+   |  |   +-----------------+   |  |
-    |                :        |  |       ^                 |  |
-    |                |        |  |       |                 |  |  Guest
-    |                v        |  |       :                 |  |
-    |     +---------------+   |  |   +---------------+     |  |
-    |     | logical port 0|   |  |   | logical port 0|     |  |
-    +-----+---------------+---+  +---+---------------+-----+ _|
-                    :                    ^
-                    |                    |
-                    v                    :                    _
-    +----+---------------+------------+---------------+-----+  |
-    |    |     port 0    |            |     port 1    |     |  |
-    |    +---------------+            +---------------+     |  |
-    |              :                    ^                   |  |
-    |              |                    |                   |  |  Host
-    |              +--------------------+                   |  |
-    |                                                       |  |
-    |                     vswitch                           |  |
-    +-------------------------------------------------------+ _|
-
-.. 3.2.5.1.8
-
-HOST 1(Physical port → virtual switch → VNF → virtual switch → Physical port)
-→ HOST 2(Physical port → virtual switch → VNF → virtual switch → Physical port)
-
-HOST 1 (PVP) → HOST 2 (PVP)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: console
-
-                                                       _
-    +----------------------+  +----------------------+  |
-    |   Guest 1            |  |   Guest 2            |  |
-    |   +---------------+  |  |   +---------------+  |  |
-    |   |  Application  |  |  |   |  Application  |  |  |
-    |   +---------------+  |  |   +---------------+  |  |
-    |       ^       |      |  |       ^       |      |  |
-    |       |       v      |  |       |       v      |  |  Guests
-    |   +---------------+  |  |   +---------------+  |  |
-    |   | logical ports |  |  |   | logical ports |  |  |
-    |   |   0       1   |  |  |   |   0       1   |  |  |
-    +---+---------------+--+  +---+---------------+--+ _|
-            ^       :                 ^       :
-            |       |                 |       |
-            :       v                 :       v        _
-    +---+---------------+--+  +---+---------------+--+  |
-    |   |   0       1   |  |  |   |   3       4   |  |  |
-    |   | logical ports |  |  |   | logical ports |  |  |
-    |   +---------------+  |  |   +---------------+  |  |
-    |       ^       |      |  |       ^       |      |  |  Hosts
-    |       |       v      |  |       |       v      |  |
-    |   +--------------+   |  |   +--------------+   |  |
-    |   |   phy ports  |   |  |   |   phy ports  |   |  |
-    +---+--------------+---+  +---+--------------+---+ _|
-            ^       :                 :       :
-            |       +-----------------+       |
-            :                                 v
-    +--------------------------------------------------+
-    |                                                  |
-    |                traffic generator                 |
-    |                                                  |
-    +--------------------------------------------------+
-
-
-
-**Note:** For tests where the traffic generator and/or measurement
-receiver are implemented on VM and connected to the virtual switch
-through vNIC, the issues of shared resources and interactions between
-the measurement devices and the device under test must be considered.
-
-**Note:** Some RFC 2889 tests require a full-mesh sending and receiving
-pattern involving more than two ports. This possibility is illustrated in the
-Physical port → vSwitch → VNF → vSwitch → VNF → vSwitch → physical port
-diagram above (with 2 sending and 2 receiving ports, though all ports
-could be used bi-directionally).
-
-**Note:** When Deployment Scenarios are used in RFC 2889 address learning
-or cache capacity testing, an additional port from the vSwitch must be
-connected to the test device. This port is used to listen for flooded
-frames.
-
-.. 3.2.5.2
-
-General Methodology:
---------------------------
-To establish the baseline performance of the virtual switch, tests would
-initially be run with a simple workload in the VNF (the recommended
-simple workload VNF would be `DPDK <http://www.dpdk.org/>`__'s testpmd
-application forwarding packets in a VM or vloop\_vnf a simple kernel
-module that forwards traffic between two network interfaces inside the
-virtualized environment while bypassing the networking stack).
-Subsequently, the tests would also be executed with a real Telco
-workload running in the VNF, which would exercise the virtual switch in
-the context of higher level Telco NFV use cases, and prove that its
-underlying characteristics and behaviour can be measured and validated.
-Suitable real Telco workload VNFs are yet to be identified.
-
-.. 3.2.5.2.1
-
-.. _default-test-parameters:
-
-Default Test Parameters
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The following list identifies the default parameters for suite of
-tests:
-
--  Reference application: Simple forwarding or Open Source VNF.
--  Frame size (bytes): 64, 128, 256, 512, 1024, 1280, 1518, 2K, 4k OR
-   Packet size based on use-case (e.g. RTP 64B, 256B) OR Mix of packet sizes as
-   maintained by the Functest project <https://wiki.opnfv.org/traffic_profile_management>.
--  Reordering check: Tests should confirm that packets within a flow are
-   not reordered.
--  Duplex: Unidirectional / Bidirectional. Default: Full duplex with
-   traffic transmitting in both directions, as network traffic generally
-   does not flow in a single direction. By default the data rate of
-   transmitted traffic should be the same in both directions, please
-   note that asymmetric traffic (e.g. downlink-heavy) tests will be
-   mentioned explicitly for the relevant test cases.
--  Number of Flows: Default for non scalability tests is a single flow.
-   For scalability tests the goal is to test with maximum supported
-   flows but where possible will test up to 10 Million flows. Start with
-   a single flow and scale up. By default flows should be added
-   sequentially, tests that add flows simultaneously will explicitly
-   call out their flow addition behaviour. Packets are generated across
-   the flows uniformly with no burstiness. For multi-core tests should
-   consider the number of packet flows based on vSwitch/VNF multi-thread
-   implementation and behavior.
-
--  Traffic Types: UDP, SCTP, RTP, GTP and UDP traffic.
--  Deployment scenarios are:
--  Physical → virtual switch → physical.
--  Physical → virtual switch → VNF → virtual switch → physical.
--  Physical → virtual switch → VNF → virtual switch → VNF → virtual
-   switch → physical.
--  Physical → VNF → virtual switch → VNF → physical.
--  Physical → virtual switch → VNF.
--  VNF → virtual switch → Physical.
--  VNF → virtual switch → VNF.
-
-Tests MUST have these parameters unless otherwise stated. **Test cases
-with non default parameters will be stated explicitly**.
-
-**Note**: For throughput tests unless stated otherwise, test
-configurations should ensure that traffic traverses the installed flows
-through the virtual switch, i.e. flows are installed and have an appropriate
-time out that doesn't expire before packet transmission starts.
-
-.. 3.2.5.2.2
-
-Flow Classification
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Virtual switches classify packets into flows by processing and matching
-particular header fields in the packet/frame and/or the input port where
-the packets/frames arrived. The vSwitch then carries out an action on
-the group of packets that match the classification parameters. Thus a
-flow is considered to be a sequence of packets that have a shared set of
-header field values or have arrived on the same port and have the same
-action applied to them. Performance results can vary based on the
-parameters the vSwitch uses to match for a flow. The recommended flow
-classification parameters for L3 vSwitch performance tests are: the
-input port, the source IP address, the destination IP address and the
-Ethernet protocol type field. It is essential to increase the flow
-time-out time on a vSwitch before conducting any performance tests that
-do not measure the flow set-up time. Normally the first packet of a
-particular flow will install the flow in the vSwitch which adds an
-additional latency, subsequent packets of the same flow are not subject
-to this latency if the flow is already installed on the vSwitch.
-
-.. 3.2.5.2.3
-
-Test Priority
-~~~~~~~~~~~~~~~~~~~~~
-
-Tests will be assigned a priority in order to determine which tests
-should be implemented immediately and which tests implementations
-can be deferred.
-
-Priority can be of following types: - Urgent: Must be implemented
-immediately. - High: Must be implemented in the next release. - Medium:
-May be implemented after the release. - Low: May or may not be
-implemented at all.
-
-.. 3.2.5.2.4
-
-SUT Setup
-~~~~~~~~~~~~~~~~~~
-
-The SUT should be configured to its "default" state. The
-SUT's configuration or set-up must not change between tests in any way
-other than what is required to do the test. All supported protocols must
-be configured and enabled for each test set up.
-
-.. 3.2.5.2.5
-
-Port Configuration
-~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The DUT should be configured with n ports where
-n is a multiple of 2. Half of the ports on the DUT should be used as
-ingress ports and the other half of the ports on the DUT should be used
-as egress ports. Where a DUT has more than 2 ports, the ingress data
-streams should be set-up so that they transmit packets to the egress
-ports in sequence so that there is an even distribution of traffic
-across ports. For example, if a DUT has 4 ports 0(ingress), 1(ingress),
-2(egress) and 3(egress), the traffic stream directed at port 0 should
-output a packet to port 2 followed by a packet to port 3. The traffic
-stream directed at port 1 should also output a packet to port 2 followed
-by a packet to port 3.
-
-.. 3.2.5.2.6
-
-Frame Formats
-~~~~~~~~~~~~~~~~~~~~~
-
-**Frame formats Layer 2 (data link layer) protocols**
-
--  Ethernet II
-
-.. code-block:: console
-
-     +---------------------------+-----------+
-     | Ethernet Header | Payload | Check Sum |
-     +-----------------+---------+-----------+
-     |_________________|_________|___________|
-           14 Bytes     46 - 1500   4 Bytes
-                          Bytes
-
-
-**Layer 3 (network layer) protocols**
-
--  IPv4
-
-.. code-block:: console
-
-     +-----------------+-----------+---------+-----------+
-     | Ethernet Header | IP Header | Payload | Checksum  |
-     +-----------------+-----------+---------+-----------+
-     |_________________|___________|_________|___________|
-           14 Bytes       20 bytes  26 - 1480   4 Bytes
-                                      Bytes
-
--  IPv6
-
-.. code-block:: console
-
-     +-----------------+-----------+---------+-----------+
-     | Ethernet Header | IP Header | Payload | Checksum  |
-     +-----------------+-----------+---------+-----------+
-     |_________________|___________|_________|___________|
-           14 Bytes       40 bytes  26 - 1460   4 Bytes
-                                      Bytes
-
-**Layer 4 (transport layer) protocols**
-
-  - TCP
-  - UDP
-  - SCTP
-
-.. code-block:: console
-
-     +-----------------+-----------+-----------------+---------+-----------+
-     | Ethernet Header | IP Header | Layer 4 Header  | Payload | Checksum  |
-     +-----------------+-----------+-----------------+---------+-----------+
-     |_________________|___________|_________________|_________|___________|
-           14 Bytes      40 bytes      20 Bytes       6 - 1460   4 Bytes
-                                                       Bytes
-
-
-**Layer 5 (application layer) protocols**
-
-  - RTP
-  - GTP
-
-.. code-block:: console
-
-     +-----------------+-----------+-----------------+---------+-----------+
-     | Ethernet Header | IP Header | Layer 4 Header  | Payload | Checksum  |
-     +-----------------+-----------+-----------------+---------+-----------+
-     |_________________|___________|_________________|_________|___________|
-           14 Bytes      20 bytes     20 Bytes        >= 6 Bytes   4 Bytes
-
-.. 3.2.5.2.7
-
-Packet Throughput
-~~~~~~~~~~~~~~~~~~~~~~~~~
-There is a difference between an Ethernet frame,
-an IP packet, and a UDP datagram. In the seven-layer OSI model of
-computer networking, packet refers to a data unit at layer 3 (network
-layer). The correct term for a data unit at layer 2 (data link layer) is
-a frame, and at layer 4 (transport layer) is a segment or datagram.
-
-Important concepts related to 10GbE performance are frame rate and
-throughput. The MAC bit rate of 10GbE, defined in the IEEE standard 802
-.3ae, is 10 billion bits per second. Frame rate is based on the bit rate
-and frame format definitions. Throughput, defined in IETF RFC 1242, is
-the highest rate at which the system under test can forward the offered
-load, without loss.
-
-The frame rate for 10GbE is determined by a formula that divides the 10
-billion bits per second by the preamble + frame length + inter-frame
-gap.
-
-The maximum frame rate is calculated using the minimum values of the
-following parameters, as described in the IEEE 802 .3ae standard:
-
--  Preamble: 8 bytes \* 8 = 64 bits
--  Frame Length: 64 bytes (minimum) \* 8 = 512 bits
--  Inter-frame Gap: 12 bytes (minimum) \* 8 = 96 bits
-
-Therefore, Maximum Frame Rate (64B Frames)
-= MAC Transmit Bit Rate / (Preamble + Frame Length + Inter-frame Gap)
-= 10,000,000,000 / (64 + 512 + 96)
-= 10,000,000,000 / 672
-= 14,880,952.38 frame per second (fps)
-
-.. 3.2.5.3
-
-RFCs for testing virtual switch performance
---------------------------------------------------
-
-The starting point for defining the suite of tests for benchmarking the
-performance of a virtual switch is to take existing RFCs and standards
-that were designed to test their physical counterparts and adapting them
-for testing virtual switches. The rationale behind this is to establish
-a fair comparison between the performance of virtual and physical
-switches. This section outlines the RFCs that are used by this
-specification.
-
-.. 3.2.5.3.1
-
-RFC 1242 Benchmarking Terminology for Network Interconnection
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-Devices RFC 1242 defines the terminology that is used in describing
-performance benchmarking tests and their results. Definitions and
-discussions covered include: Back-to-back, bridge, bridge/router,
-constant load, data link frame size, frame loss rate, inter frame gap,
-latency, and many more.
-
-.. 3.2.5.3.2
-
-RFC 2544 Benchmarking Methodology for Network Interconnect Devices
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-RFC 2544 outlines a benchmarking methodology for network Interconnect
-Devices. The methodology results in performance metrics such as latency,
-frame loss percentage, and maximum data throughput.
-
-In this document network “throughput” (measured in millions of frames
-per second) is based on RFC 2544, unless otherwise noted. Frame size
-refers to Ethernet frames ranging from smallest frames of 64 bytes to
-largest frames of 9K bytes.
-
-Types of tests are:
-
-1. Throughput test defines the maximum number of frames per second
-   that can be transmitted without any error, or 0% loss ratio.
-   In some Throughput tests (and those tests with long duration),
-   evaluation of an additional frame loss ratio is suggested. The
-   current ratio (10^-7 %) is based on understanding the typical
-   user-to-user packet loss ratio needed for good application
-   performance and recognizing that a single transfer through a
-   vswitch must contribute a tiny fraction of user-to-user loss.
-   Further, the ratio 10^-7 % also recognizes practical limitations
-   when measuring loss ratio.
-
-2. Latency test measures the time required for a frame to travel from
-   the originating device through the network to the destination device.
-   Please note that RFC2544 Latency measurement will be superseded with
-   a measurement of average latency over all successfully transferred
-   packets or frames.
-
-3. Frame loss test measures the network’s
-   response in overload conditions - a critical indicator of the
-   network’s ability to support real-time applications in which a
-   large amount of frame loss will rapidly degrade service quality.
-
-4. Burst test assesses the buffering capability of a virtual switch. It
-   measures the maximum number of frames received at full line rate
-   before a frame is lost. In carrier Ethernet networks, this
-   measurement validates the excess information rate (EIR) as defined in
-   many SLAs.
-
-5. System recovery to characterize speed of recovery from an overload
-   condition.
-
-6. Reset to characterize speed of recovery from device or software
-   reset. This type of test has been updated by `RFC6201
-   <https://www.rfc-editor.org/rfc/rfc6201.txt>`__ as such,
-   the methodology defined by this specification will be that of RFC 6201.
-
-Although not included in the defined RFC 2544 standard, another crucial
-measurement in Ethernet networking is packet delay variation. The
-definition set out by this specification comes from
-`RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__.
-
-.. 3.2.5.3.3
-
-RFC 2285 Benchmarking Terminology for LAN Switching Devices
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-RFC 2285 defines the terminology that is used to describe the
-terminology for benchmarking a LAN switching device. It extends RFC
-1242 and defines: DUTs, SUTs, Traffic orientation and distribution,
-bursts, loads, forwarding rates, etc.
-
-.. 3.2.5.3.4
-
-RFC 2889 Benchmarking Methodology for LAN Switching
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-RFC 2889 outlines a benchmarking methodology for LAN switching, it
-extends RFC 2544. The outlined methodology gathers performance
-metrics for forwarding, congestion control, latency, address handling
-and finally filtering.
-
-.. 3.2.5.3.5
-
-RFC 3918 Methodology for IP Multicast Benchmarking
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-RFC 3918 outlines a methodology for IP Multicast benchmarking.
-
-.. 3.2.5.3.6
-
-RFC 4737 Packet Reordering Metrics
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-RFC 4737 describes metrics for identifying and counting re-ordered
-packets within a stream, and metrics to measure the extent each
-packet has been re-ordered.
-
-.. 3.2.5.3.7
-
-RFC 5481 Packet Delay Variation Applicability Statement
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-RFC 5481 defined two common, but different forms of delay variation
-metrics, and compares the metrics over a range of networking
-circumstances and tasks. The most suitable form for vSwitch
-benchmarking is the "PDV" form.
-
-.. 3.2.5.3.8
-
-RFC 6201 Device Reset Characterization
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-RFC 6201 extends the methodology for characterizing the speed of
-recovery of the DUT from device or software reset described in RFC
-2544.
-
-.. 3.2.6:
-
-.. _PassFailCriteria:
-
-Item pass/fail criteria
-=========================
-
-vswitchperf does not specify Pass/Fail criteria for the tests in terms of a
-threshold, as benchmarks do not (and should not do this). The results/metrics
-for a test are simply reported. If it had to be defined, a test is considered
-to have passed if it succesfully completed and a relavent metric was
-recorded/reported for the SUT.
-
-.. 3.2.7:
-
-.. _SuspensionResumptionReqs:
-
-Suspension criteria and resumption requirements
-================================================
-In the case of a throughput test, a test should be suspended if a virtual
-switch is failing to forward any traffic. A test should be restarted from a
-clean state if the intention is to carry out the test again.
-
-.. 3.2.8:
-
-.. _TestDelierables:
-
-Test deliverables
-==================
-Each test should produce a test report that details SUT information as well as
-the test results. There are a number of parameters related to the system, DUT
-and tests that can affect the repeatability of a test results and should be
-recorded. In order to minimise the variation in the results of a test,
-it is recommended that the test report includes the following information:
-
--  Hardware details including:
-
-   -  Platform details.
-   -  Processor details.
-   -  Memory information (see below)
-   -  Number of enabled cores.
-   -  Number of cores used for the test.
-   -  Number of physical NICs, as well as their details (manufacturer,
-      versions, type and the PCI slot they are plugged into).
-   -  NIC interrupt configuration.
-   -  BIOS version, release date and any configurations that were
-      modified.
-
--  Software details including:
-
-   -  OS version (for host and VNF)
-   -  Kernel version (for host and VNF)
-   -  GRUB boot parameters (for host and VNF).
-   -  Hypervisor details (Type and version).
-   -  Selected vSwitch, version number or commit id used.
-   -  vSwitch launch command line if it has been parameterised.
-   -  Memory allocation to the vSwitch – which NUMA node it is using,
-      and how many memory channels.
-   -  Where the vswitch is built from source: compiler details including
-      versions and the flags that were used to compile the vSwitch.
-   -  DPDK or any other SW dependency version number or commit id used.
-   -  Memory allocation to a VM - if it's from Hugpages/elsewhere.
-   -  VM storage type: snapshot/independent persistent/independent
-      non-persistent.
-   -  Number of VMs.
-   -  Number of Virtual NICs (vNICs), versions, type and driver.
-   -  Number of virtual CPUs and their core affinity on the host.
-   -  Number vNIC interrupt configuration.
-   -  Thread affinitization for the applications (including the vSwitch
-      itself) on the host.
-   -  Details of Resource isolation, such as CPUs designated for
-      Host/Kernel (isolcpu) and CPUs designated for specific processes
-      (taskset).
-
--  Memory Details
-
-   -  Total memory
-   -  Type of memory
-   -  Used memory
-   -  Active memory
-   -  Inactive memory
-   -  Free memory
-   -  Buffer memory
-   -  Swap cache
-   -  Total swap
-   -  Used swap
-   -  Free swap
-
--  Test duration.
--  Number of flows.
--  Traffic Information:
-
-   -  Traffic type - UDP, TCP, IMIX / Other.
-   -  Packet Sizes.
-
--  Deployment Scenario.
-
-**Note**: Tests that require additional parameters to be recorded will
-explicitly specify this.
-
-
-.. 3.3:
-
-.. _TestManagement:
-
-Test management
-=================
-This section will detail the test activities that will be conducted by vsperf
-as well as the infrastructure that will be used to complete the tests in OPNFV.
-
-.. 3.3.1:
-
-Planned activities and tasks; test progression
-=================================================
-A key consideration when conducting any sort of benchmark is trying to
-ensure the consistency and repeatability of test results between runs.
-When benchmarking the performance of a virtual switch there are many
-factors that can affect the consistency of results. This section
-describes these factors and the measures that can be taken to limit
-their effects. In addition, this section will outline some system tests
-to validate the platform and the VNF before conducting any vSwitch
-benchmarking tests.
-
-**System Isolation:**
-
-When conducting a benchmarking test on any SUT, it is essential to limit
-(and if reasonable, eliminate) any noise that may interfere with the
-accuracy of the metrics collected by the test. This noise may be
-introduced by other hardware or software (OS, other applications), and
-can result in significantly varying performance metrics being collected
-between consecutive runs of the same test. In the case of characterizing
-the performance of a virtual switch, there are a number of configuration
-parameters that can help increase the repeatability and stability of
-test results, including:
-
--  OS/GRUB configuration:
-
-   -  maxcpus = n where n >= 0; limits the kernel to using 'n'
-      processors. Only use exactly what you need.
-   -  isolcpus: Isolate CPUs from the general scheduler. Isolate all
-      CPUs bar one which will be used by the OS.
-   -  use taskset to affinitize the forwarding application and the VNFs
-      onto isolated cores. VNFs and the vSwitch should be allocated
-      their own cores, i.e. must not share the same cores. vCPUs for the
-      VNF should be affinitized to individual cores also.
-   -  Limit the amount of background applications that are running and
-      set OS to boot to runlevel 3. Make sure to kill any unnecessary
-      system processes/daemons.
-   -  Only enable hardware that you need to use for your test – to
-      ensure there are no other interrupts on the system.
-   -  Configure NIC interrupts to only use the cores that are not
-      allocated to any other process (VNF/vSwitch).
-
--  NUMA configuration: Any unused sockets in a multi-socket system
-   should be disabled.
--  CPU pinning: The vSwitch and the VNF should each be affinitized to
-   separate logical cores using a combination of maxcpus, isolcpus and
-   taskset.
--  BIOS configuration: BIOS should be configured for performance where
-   an explicit option exists, sleep states should be disabled, any
-   virtualization optimization technologies should be enabled, and
-   hyperthreading should also be enabled, turbo boost and overclocking
-   should be disabled.
-
-**System Validation:**
-
-System validation is broken down into two sub-categories: Platform
-validation and VNF validation. The validation test itself involves
-verifying the forwarding capability and stability for the sub-system
-under test. The rationale behind system validation is two fold. Firstly
-to give a tester confidence in the stability of the platform or VNF that
-is being tested; and secondly to provide base performance comparison
-points to understand the overhead introduced by the virtual switch.
-
-* Benchmark platform forwarding capability: This is an OPTIONAL test
-  used to verify the platform and measure the base performance (maximum
-  forwarding rate in fps and latency) that can be achieved by the
-  platform without a vSwitch or a VNF. The following diagram outlines
-  the set-up for benchmarking Platform forwarding capability:
-
-  .. code-block:: console
-
-                                                            __
-       +--------------------------------------------------+   |
-       |   +------------------------------------------+   |   |
-       |   |                                          |   |   |
-       |   |          l2fw or DPDK L2FWD app          |   |  Host
-       |   |                                          |   |   |
-       |   +------------------------------------------+   |   |
-       |   |                 NIC                      |   |   |
-       +---+------------------------------------------+---+ __|
-                  ^                           :
-                  |                           |
-                  :                           v
-       +--------------------------------------------------+
-       |                                                  |
-       |                traffic generator                 |
-       |                                                  |
-       +--------------------------------------------------+
-
-* Benchmark VNF forwarding capability: This test is used to verify
-  the VNF and measure the base performance (maximum forwarding rate in
-  fps and latency) that can be achieved by the VNF without a vSwitch.
-  The performance metrics collected by this test will serve as a key
-  comparison point for NIC passthrough technologies and vSwitches. VNF
-  in this context refers to the hypervisor and the VM. The following
-  diagram outlines the set-up for benchmarking VNF forwarding
-  capability:
-
-  .. code-block:: console
-
-                                                            __
-       +--------------------------------------------------+   |
-       |   +------------------------------------------+   |   |
-       |   |                                          |   |   |
-       |   |                 VNF                      |   |   |
-       |   |                                          |   |   |
-       |   +------------------------------------------+   |   |
-       |   |          Passthrough/SR-IOV              |   |  Host
-       |   +------------------------------------------+   |   |
-       |   |                 NIC                      |   |   |
-       +---+------------------------------------------+---+ __|
-                  ^                           :
-                  |                           |
-                  :                           v
-       +--------------------------------------------------+
-       |                                                  |
-       |                traffic generator                 |
-       |                                                  |
-       +--------------------------------------------------+
-
-
-**Methodology to benchmark Platform/VNF forwarding capability**
-
-
-The recommended methodology for the platform/VNF validation and
-benchmark is: - Run `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__
-Maximum Forwarding Rate test, this test will produce maximum
-forwarding rate and latency results that will serve as the
-expected values. These expected values can be used in
-subsequent steps or compared with in subsequent validation tests. -
-Transmit bidirectional traffic at line rate/max forwarding rate
-(whichever is higher) for at least 72 hours, measure throughput (fps)
-and latency. - Note: Traffic should be bidirectional. - Establish a
-baseline forwarding rate for what the platform can achieve. - Additional
-validation: After the test has completed for 72 hours run bidirectional
-traffic at the maximum forwarding rate once more to see if the system is
-still functional and measure throughput (fps) and latency. Compare the
-measure the new obtained values with the expected values.
-
-**NOTE 1**: How the Platform is configured for its forwarding capability
-test (BIOS settings, GRUB configuration, runlevel...) is how the
-platform should be configured for every test after this
-
-**NOTE 2**: How the VNF is configured for its forwarding capability test
-(# of vCPUs, vNICs, Memory, affinitization…) is how it should be
-configured for every test that uses a VNF after this.
-
-**Methodology to benchmark the VNF to vSwitch to VNF deployment scenario**
-
-vsperf has identified the following concerns when benchmarking the VNF to
-vSwitch to VNF deployment scenario:
-
-* The accuracy of the timing synchronization between VNFs/VMs.
-* The clock accuracy of a VNF/VM if they were to be used as traffic generators.
-* VNF traffic generator/receiver may be using resources of the system under
-  test, causing at least three forms of workload to increase as the traffic
-  load increases (generation, switching, receiving).
-
-The recommendation from vsperf is that tests for this sceanario must
-include an external HW traffic generator to act as the tester/traffic transmitter
-and receiver. The perscribed methodology to benchmark this deployment scanrio with
-an external tester involves the following three steps:
-
-#. Determine the forwarding capability and latency through the virtual interface
-connected to the VNF/VM.
-
-.. Figure:: vm2vm_virtual_interface_benchmark.png
-
-   Virtual interfaces performance benchmark
-
-#. Determine the forwarding capability and latency through the VNF/hypervisor.
-
-.. Figure:: vm2vm_hypervisor_benchmark.png
-
-   Hypervisor performance benchmark
-
-#. Determine the forwarding capability and latency for the VNF to vSwitch to VNF
-   taking the information from the previous two steps into account.
-
-.. Figure:: vm2vm_benchmark.png
-
-   VNF to vSwitch to VNF performance benchmark
-
-vsperf also identified an alternative configuration for the final step:
-
-.. Figure:: vm2vm_alternative_benchmark.png
-
-   VNF to vSwitch to VNF alternative performance benchmark
-
-.. 3.3.2:
-
-Environment/infrastructure
-============================
-Intel is providing a hosted test-bed with nine bare-metal environments
-allocated to different OPNFV projects. Currently a number of servers in
-`Intel POD 3 <https://wiki.opnfv.org/display/pharos/Intel+Pod3>`__ are
-allocated to vsperf:
-
-  * pod3-wcp-node3 and pod3-wcp-node4 which are used for CI jobs.
-  * pod3-node6 which is used as a vsperf sandbox environment.
-
-vsperf CI
----------
-vsperf CI jobs are broken down into:
-
-  * Daily job:
-
-    * Runs everyday takes about 10 hours to complete.
-    * TESTCASES_DAILY='phy2phy_tput back2back phy2phy_tput_mod_vlan
-      phy2phy_scalability pvp_tput pvp_back2back pvvp_tput pvvp_back2back'.
-    * TESTPARAM_DAILY='--test-params TRAFFICGEN_PKT_SIZES=(64,128,512,1024,1518)'.
-
-  * Merge job:
-
-    * Runs whenever patches are merged to master.
-    * Runs a basic Sanity test.
-
-  * Verify job:
-
-    * Runs every time a patch is pushed to gerrit.
-    * Builds documentation.
-
-Scripts:
---------
-There are 2 scripts that are part of VSPERFs CI:
-
-  * build-vsperf.sh: Lives in the VSPERF repository in the ci/ directory and is
-    used to run vsperf with the appropriate cli parameters.
-  * vswitchperf.yml: YAML description of our jenkins job. lives in the RELENG
-    repository.
-
-More info on vsperf CI can be found here:
-https://wiki.opnfv.org/display/vsperf/VSPERF+CI
-
-.. 3.3.3:
-
-Responsibilities and authority
-===============================
-The group responsible for managing, designing, preparing and executing the
-tests listed in the LTD are the vsperf committers and contributors. The vsperf
-committers and contributors should work with the relavent OPNFV projects to
-ensure that the infrastructure is in place for testing vswitches, and that the
-results are published to common end point (a results database).
-