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-.. _opnfv-overview:
-
-.. This work is licensed under a Creative Commons Attribution 4.0 International License.
-.. SPDX-License-Identifier: CC-BY-4.0
-.. (c) Open Platform for NFV Project, Inc. and its contributors
-
-================
-Platform overview
-================
-
-Introduction
-============
-
-Network Functions Virtualization (NFV) is transforming the networking industry via
-software-defined infrastructures and open source is the proven method for quickly developing
-software for commercial products and services that can move markets.
-Open Platform for NFV (OPNFV) facilitates the development and evolution of NFV
-components across various open source ecosystems. Through system level integration,
-deployment and testing, OPNFV constructs a reference NFV platform to accelerate the
-transformation of enterprise and service provider networks.
-As an open source project, OPNFV is uniquely positioned to bring together the work
-of standards bodies, open source communities, service providers and commercial suppliers to deliver
-a de facto NFV platform for the industry.
-
-By integrating components from upstream projects, the community is able to conduct performance
-and use case-based testing on a variety of solutions to ensure the platform’s suitability for
-NFV use cases. OPNFV also works upstream with other open source communities to bring contributions
-and learnings from its work directly to those communities in the form of blueprints, patches, bugs,
-and new code.
-
-OPNFV initially focused on building NFV Infrastructure (NFVI) and Virtualised Infrastructure
-Management (VIM) by integrating components from upstream projects such as OpenDaylight,
-OpenStack, Ceph Storage, KVM, Open vSwitch, and Linux.
-More recently, OPNFV has extended its portfolio of forwarding solutions to include fd.io and ODP,
-is able to run on both Intel and ARM commercial and white-box hardware, support VM, Container and
-BareMetal workloads, and includes Management and Network Orchestration MANO components primarily
-for application composition and management in the Danube release.
-
-These capabilities, along with application programmable interfaces (APIs) to other NFV
-elements, form the basic infrastructure required for Virtualized Network Functions (VNF)
-and MANO components.
-
-Concentrating on these components while also considering proposed projects on additional
-topics (such as the MANO components and applications themselves), OPNFV aims to enhance
-NFV services by increasing performance and power efficiency improving reliability,
-availability and serviceability, and delivering comprehensive platform instrumentation.
-
-
-OPNFV Platform Architecture
-===========================
-
-The OPNFV project addresses a number of aspects in the development of a consistent virtualisation
-platform including common hardware requirements, software architecture, MANO and applications.
-
-
-OPNFV Platform Overview Diagram
-
-.. image:: ../images/opnfvplatformgraphic.png
- :alt: Overview infographic of the opnfv platform and projects.
-
-
-To address these areas effectively, the OPNFV platform architecture can be decomposed
-into the following basic building blocks:
-
-* Hardware: with the Infra working group, Pharos project and associated activities
-* Software Platform: through the platform integration and deployment projects
-* MANO: through the MANO working group and associated projects
-* Applications: which affect all other areas and drive requirements for OPNFV
-
-OPNFV Lab Infrastructure
-========================
-
-The infrastructure working group oversees such topics as lab management, workflow,
-definitions, metrics and tools for OPNFV infrastructure.
-
-Fundamental to the WG is the
-`Pharos Specification <https://wiki.opnfv.org/display/pharos/Pharos+Specification>`_
-which provides a set of defined lab infrastructures over a geographically and technically
-diverse federated global OPNFV lab.
-
-Labs may instantiate bare-metal and virtual environments that are accessed remotely by the
-community and used for OPNFV platform and feature development, build, deploy and testing.
-No two labs are the same and the heterogeneity of the Pharos environment provides the ideal
-platform for establishing hardware and software abstractions providing well understood
-performance characteristics.
-
-Community labs are hosted by OPNFV member companies on a voluntary basis.
-The Linux Foundation also hosts an OPNFV lab that provides centralized CI
-and other production resources which are linked to community labs.
-Future lab capabilities will include the ability easily automate deploy and test of any
-OPNFV install scenario in any lab environment as well as on a nested "lab as a service"
-virtual infrastructure.
-
-OPNFV Software Platform Architecture
-====================================
-
-The OPNFV software platform is comprised exclusively of open source implementations of
-platform component pieces. OPNFV is able to draw from the rich ecosystem of NFV related
-technologies available in open-source then integrate, test, measure and improve these
-components in conjunction with our source communities.
-
-While the composition of the OPNFV software platform is highly complex and constituted of many
-projects and components, a subset of these projects gain the most attention from the OPNFV community
-to drive the development of new technologies and capabilities.
-
----------------------------------
-Virtual Infrastructure Management
----------------------------------
-
-OPNFV derives it's virtual infrastructure management from one of our largest upstream ecosystems
-OpenStack. OpenStack provides a complete reference cloud management system and associated technologies.
-While the OpenStack community sustains a broad set of projects, not all technologies are relevant in
-an NFV domain, the OPNFV community consumes a sub-set of OpenStack projects where the usage and
-composition may vary depending on the installer and scenario.
-
-For details on the scenarios available in OPNFV and the specific composition of components
-refer to the :ref:`OPNFV User Guide & Configuration Guide <opnfv-user-config>`
-
------------------
-Operating Systems
------------------
-
-OPNFV currently uses Linux on all target machines, this can include Ubuntu, Centos or SUSE linux. The
-specific version of Linux used for any deployment is documented in the installation guide.
-
------------------------
-Networking Technologies
------------------------
-
-SDN Controllers
----------------
-
-OPNFV, as an NFV focused project, has a significant investment on networking technologies
-and provides a broad variety of integrated open source reference solutions. The diversity
-of controllers able to be used in OPNFV is supported by a similarly diverse set of
-forwarding technologies.
-
-There are many SDN controllers available today relevant to virtual environments
-where the OPNFV community supports and contributes to a number of these. The controllers
-being worked on by the community during this release of OPNFV include:
-
-* Neutron: an OpenStack project to provide “network connectivity as a service” between
- interface devices (e.g., vNICs) managed by other OpenStack services (e.g., nova).
-* OpenDaylight: addresses multivendor, traditional and greenfield networks, establishing the
- industry’s de facto SDN platform and providing the foundation for networks of the future.
-* ONOS: a carrier-grade SDN network operating system designed for high availability,
- performance, scale-out.
-
-.. OpenContrail SDN controller is planned to be supported in the next release.
-
-Data Plane
-----------
-
-OPNFV extends Linux virtual networking capabilities by using virtual switching
-and routing components. The OPNFV community proactively engages with these source
-communities to address performance, scale and resiliency needs apparent in carrier
-networks.
-
-* FD.io (Fast data - Input/Output): a collection of several projects and libraries to
- amplify the transformation that began with Data Plane Development Kit (DPDK) to support
- flexible, programmable and composable services on a generic hardware platform.
-* Open vSwitch: a production quality, multilayer virtual switch designed to enable
- massive network automation through programmatic extension, while still supporting standard
- management interfaces and protocols.
-
-Deployment Architecture
-=======================
-
-A typical OPNFV deployment starts with three controller nodes running in a high availability
-configuration including control plane components from OpenStack, SDN, etc. and a minimum
-of two compute nodes for deployment of workloads (VNFs).
-A detailed description of the hardware requirements required to support the 5 node configuration
-can be found in pharos specification: `Pharos Project <https://www.opnfv.org/developers/pharos>`_
-
-In addition to the deployment on a highly available physical infrastructure, OPNFV can be
-deployed for development and lab purposes in a virtual environment. In this case each of the hosts
-is provided by a virtual machine and allows control and workload placement using nested virtualization.
-
-The initial deployment is done using a staging server, referred to as the "jumphost".
-This server-either physical or virtual-is first installed with the installation program
-that then installs OpenStack and other components on the controller nodes and compute nodes.
-See the :ref:`OPNFV User Guide & Configuration Guide <opnfv-user-config>` for more details.
-
-
-The OPNFV Testing Ecosystem
-===========================
-
-The OPNFV community has set out to address the needs of virtualization in the carrier
-network and as such platform validation and measurements are a cornerstone to the
-iterative releases and objectives.
-
-To simplify the complex task of feature, component and platform validation and characterization
-the testing community has established a fully automated method for addressing all key areas of
-platform validation. This required the integration of a variety of testing frameworks in our CI
-systems, real time and automated analysis of results, storage and publication of key facts for
-each run as shown in the following diagram.
-
-.. image:: ../images/OPNFV_testing_working_group.png
- :alt: Overview infographic of the OPNFV testing Ecosystem
-
-Release Verification
-====================
-
-The OPNFV community relies on its testing community to establish release criteria for each OPNFV
-release. Each release cycle the testing criteria become more stringent and better representative
-of our feature and resiliency requirements.
-
-
-As each OPNFV release establishes a set of deployment scenarios to validate, the testing
-infrastructure and test suites need to accommodate these features and capabilities. It’s not
-only in the validation of the scenarios themselves where complexity increases, there are test
-cases that require multiple datacenters to execute when evaluating features, including multisite
-and distributed datacenter solutions.
-
-The release criteria as established by the testing teams include passing a set of test cases
-derived from the functional testing project ‘functest,’ a set of test cases derived from our
-platform system and performance test project ‘yardstick,’ and a selection of test cases for
-feature capabilities derived from other test projects such as bottlenecks, vsperf, cperf and
-storperf. The scenario needs to be able to be deployed, pass these tests, and be removed from
-the infrastructure iteratively (no less that 4 times) in order to fulfil the release criteria.
-
---------
-Functest
---------
-
-Functest provides a functional testing framework incorporating a number of test suites
-and test cases that test and verify OPNFV platform functionality.
-The scope of Functest and relevant test cases can be found in the :ref:`Functest User Guide <functest-userguide>`
-
-Functest provides both feature project and component test suite integration, leveraging
-OpenStack and SDN controllers testing frameworks to verify the key components of the OPNFV
-platform are running successfully.
-
----------
-Yardstick
----------
-
-Yardstick is a testing project for verifying the infrastructure compliance when running VNF applications.
-Yardstick benchmarks a number of characteristics and performance vectors on the infrastructure making it
-a valuable pre-deployment NFVI testing tools.
-
-Yardstick provides a flexible testing framework for launching other OPNFV testing projects.
-
-There are two types of test cases in Yardstick:
-
-* Yardstick generic test cases and OPNFV feature test cases;
- including basic characteristics benchmarking in compute/storage/network area.
-* OPNFV feature test cases include basic telecom feature testing from OPNFV projects;
- for example nfv-kvm, sfc, ipv6, Parser, Availability and SDN VPN
-
-System Evaluation and compliance testing
-========================================
-
-The OPNFV community is developing a set of test suites intended to evaluate a set of reference
-behaviors and capabilities for NFV systems developed externally from the OPNFV ecosystem to
-evaluate and measure their ability to provide the features and capabilities developed in the
-OPNFV ecosystem.
-
-The Dovetail project will provide a test framework and methodology able to be used on any NFV platform,
-including an agreed set of test cases establishing an evaluation criteria for exercising
-an OPNFV compatible system. The Dovetail project has begun establishing the test framework
-and will provide a preliminary methodology for the Danube release. Work will continue to
-develop these test cases to establish a stand alone compliance evaluation solution
-in future releases.
-
-Additional Testing
-==================
-
-Besides the test suites and cases for release verification, additional testing is performed to validate
-specific features or characteristics of the OPNFV platform.
-These testing framework and test cases may include some specific needs; such as extended measurements,
-additional testing stimuli, or tests simulating environmental disturbances or failures.
-
-These additional testing activities provide a more complete evaluation of the OPNFV platform.
-Some of the projects focused on these testing areas include:
-
-------
-VSPERF
-------
-
-VSPERF provides an automated test-framework and comprehensive test suite for measuring data-plane
-performance of the NFVI including switching technology, physical and virtual network interfaces.
-The provided test cases with network topologies can be customized while also allowing individual
-versions of Operating System, vSwitch and hypervisor to be specified.
-
------------
-Bottlenecks
------------
-
-Bottlenecks provides a framework to find system limitations and bottlenecks, providing
-root cause isolation capabilities to facilitate system evaluation.
-
-
-.. _`OPNFV Configuration Guide`: `OPNFV User Guide & Configuration Guide`
-.. _`OPNFV User Guide`: `OPNFV User Guide & Configuration Guide`
-.. _`Dovetail project`: https://wiki.opnfv.org/display/dovetail