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diff --git a/docs/userguide/07-nsb-overview.rst b/docs/userguide/07-nsb-overview.rst new file mode 100644 index 000000000..19719f1a7 --- /dev/null +++ b/docs/userguide/07-nsb-overview.rst @@ -0,0 +1,177 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International +.. License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, 2016-2017 Intel Corporation. + +===================================== +Network Services Benchmarking (NSB) +===================================== + +Abstract +======== + +.. _Yardstick: https://wiki.opnfv.org/yardstick + +This chapter provides an overview of the NSB, a contribution to OPNFV +Yardstick_ from Intel. + +Overview +======== + +GOAL: Extend Yardstick to perform real world VNFs and NFVi Characterization and +benchmarking with repeatable and deterministic methods. + +The Network Service Benchmarking (NSB) extends the yardstick framework to do +VNF characterization and benchmarking in three different execution +environments viz., bare metal i.e. native Linux environment, standalone virtual +environment and managed virtualized environment (e.g. Open stack etc.). +It also brings in the capability to interact with external traffic generators +both hardware & software based for triggering and validating the traffic +according to user defined profiles. + +NSB extension includes: + • Generic data models of Network Services, based on ETSI specs + • New Standalone context for VNF testing like SRIOV, OVS, OVS-DPDK etc + • Generic VNF configuration models and metrics implemented with Python + classes + • Traffic generator features and traffic profiles + • L1-L3 state-less traffic profiles + • L4-L7 state-full traffic profiles + • Tunneling protocol / network overlay support + • Test case samples + • Ping + • Trex + • vPE,vCGNAT, vFirewall etc - ipv4 throughput, latency etc + • Traffic generators like Trex, ab/nginx, ixia, iperf etc + • KPIs for a given use case: + • System agent support for collecting NFvi KPI. This includes: + o CPU statistic + o Memory BW + o OVS-DPDK Stats + • Network KPIs – eg, inpackets, outpackets, thoughput, latency etc + • VNF KPIs – packet_in, packet_drop, packet_fwd etc + +Architecture +============ +The Network Service (NS) defines a set of Virtual Network Functions (VNF) +connected together using NFV infrastructure. + +The Yardstick NSB extension can support multiple VNFs created by different +vendors including traffic generators. Every VNF being tested has its +own data model. The Network service defines a VNF modelling on base of performed +network functionality. The part of the data model is a set of the configuration +parameters, number of connection points used and flavor including core and +memory amount. + +The ETSI defines a Network Service as a set of configurable VNFs working in +some NFV Infrastructure connecting each other using Virtual Links available +through Connection Points. The ETSI MANO specification defines a set of +management entities called Network Service Descriptors (NSD) and +VNF Descriptors (VNFD) that define real Network Service. The picture below +makes an example how the real Network Operator use-case can map into ETSI +Network service definition + +Network Service framework performs the necessary test steps. It may involve + o Interacting with traffic generator and providing the inputs on traffic + type / packet structure to generate the required traffic as per the + test case. Traffic profiles will be used for this. + o Executing the commands required for the test procedure and analyses the + command output for confirming whether the command got executed correctly + or not. E.g. As per the test case, run the traffic for the given + time period / wait for the necessary time delay + o Verify the test result. + o Validate the traffic flow from SUT + o Fetch the table / data from SUT and verify the value as per the test case + o Upload the logs from SUT onto the Test Harness server + o Read the KPI’s provided by particular VNF + +Components of Network Service +------------------------------ + +* *Models for Network Service benchmarking*: The Network Service benchmarking + requires the proper modelling approach. The NSB provides models using Python + files and defining of NSDs and VNFDs. + +The benchmark control application being a part of OPNFV yardstick can call +that python models to instantiate and configure the VNFs. Depending on +infrastructure type (bare-metal or fully virtualized) that calls could be +made directly or using MANO system. + +* *Traffic generators in NSB*: Any benchmark application requires a set of + traffic generator and traffic profiles defining the method in which traffic + is generated. + +The Network Service benchmarking model extends the Network Service +definition with a set of Traffic Generators (TG) that are treated +same way as other VNFs being a part of benchmarked network service. +Same as other VNFs the traffic generator are instantiated and terminated. + +Every traffic generator has own configuration defined as a traffic profile and +a set of KPIs supported. The python models for TG is extended by specific calls +to listen and generate traffic. + +* *The stateless TREX traffic generator*: The main traffic generator used as + Network Service stimulus is open source TREX tool. + +The TREX tool can generate any kind of stateless traffic. + +.. code-block:: console + + +--------+ +-------+ +--------+ + | | | | | | + | Trex | ---> | VNF | ---> | Trex | + | | | | | | + +--------+ +-------+ +--------+ + +Supported testcases scenarios: +• Correlated UDP traffic using TREX traffic generator and replay VNF. + o using different IMIX configuration like pure voice, pure video traffic etc + o using different number IP flows like 1 flow, 1K, 16K, 64K, 256K, 1M flows + o Using different number of rules configured like 1 rule, 1K, 10K rules + +For UDP correlated traffic following Key Performance Indicators are collected +for every combination of test case parameters: + • RFC2544 throughput for various loss rate defined (1% is a default) + +Graphical Overview +================== + +NSB Testing with yardstick framework facilitate performance testing of various +VNFs provided. + +.. code-block:: console + +-----------+ + | | +-----------+ + | vPE | ->|TGen Port 0| + | TestCase | | +-----------+ + | | | + +-----------+ +------------------+ +-------+ | + | | -- API --> | VNF | <---> + +-----------+ | Yardstick | +-------+ | + | Test Case | --> | NSB Testing | | + +-----------+ | | | + | | | | + | +------------------+ | + +-----------+ | +-----------+ + | Traffic | ->|TGen Port 1| + | patterns | +-----------+ + +-----------+ + Figure 1: Network Service - 2 server configuration + + +Install +======= + +run the nsb_install.sh with root privileges + +Run +=== + +source ~/.bash_profile +cd <yardstick_repo>/yardstick/cmd +sudo -E ./NSBperf.py --vnf vpe --test tc_baremetal_rfc2544_ipv4_1flow_64B.yaml + +Development Environment +======================= + +Ubuntu 14.04, Ubuntu 16.04 |