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+.. OPNFV - Open Platform for Network Function Virtualization
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+
+**********************************************************************
+Fast Data Stacks Scenario: os-nosdn-fdio-noha Overview and Description
+**********************************************************************
+
+Scenario: "OpenStack - FD.io" (apex-os-nosdn-fdio-noha)
+is a scenario developed as part of the FastDataStacks
+OPNFV project.
+
+.. toctree::
+ :numbered:
+ :maxdepth: 2
+
+ scenario.description.rst
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+.. OPNFV - Open Platform for Network Function Virtualization
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+Scenario: "OpenStack - FD.io"
+=============================
+
+Scenario: apex-os-nosdn-fdio-noha
+
+"apex-os-nosdn-noha" is a scenario developed as part of the FastDataStacks
+OPNFV project. The main components of the "apex-os-nosdn-fdio-noha" scenario
+are:
+
+ - APEX (TripleO) installer (please also see APEX installer documentation)
+ - Openstack (in non-HA configuration)
+ - FD.io/VPP virtual forwarder for tenant networking
+
+Introduction
+============
+
+NFV and virtualized high performance applications, such as video processing,
+require a "fast data stack" solution that provides both carrier grade
+forwarding performance, scalability and open extensibility.
+
+A key component of any NFV solution is the virtual forwarder, which needs to be
+a feature rich, high performance, highly scale virtual switch-router. It needs
+to leverage hardware accelerators when available and run in user space. In
+addition, it should be modular and easily extensible. The Vector Packet
+Processor (VPP) supplied by the FD.io project meets these needs, in that
+it offers a highly scalable, high performance and easily extensible
+software forwarder that entirely runs in user space.
+
+The "Openstack - FD.io/VPP" scenario provides the capability to realize a set
+of use-cases relevant to the deployment of NFV nodes instantiated by means of
+an Openstack orchestration system on FD.io/VPP enabled compute nodes.
+
+A deployment of the "apex-os-nosdn-fdio-noha" scenario consists of 3 or more
+servers:
+
+ * 1 Jumphost hosting the APEX installer - running the Undercloud
+ * 1 Controlhost, which runs the Overcloud and Openstack services
+ * 1 or more Computehosts
+
+.. image:: FDS-nosdn-overview.png
+
+Tenant networking leverages FD.io/VPP. Open VSwitch (OVS) is used for all other
+connectivity, in particular the connectivity to public networking / the
+Internet (i.e. br-ext) is performed via OVS as in any standard OpenStack
+deployment. A VPP management agent is used to setup and manage layer 2
+networking for the scenario. Tenant networking can either leverage VLANs or
+plain interfaces. Layer 3 connectivity for a tenant network is provided
+centrally via qrouter on the control node. As in a standard OpenStack
+deployment, the Layer3 agent configures the qrouter and associated rulesets for
+security (security groups) and NAT (floating IPs). Public IP network
+connectivity for a tenant network is provided by interconnecting the VPP-based
+bridge domain representing the tenant network to qrouter using a tap interface.
+The setup is depicted below:
+
+Features of the scenario
+------------------------
+
+Main features of the "apex-os-odl_l2-fdio-noha" scenario:
+
+ * Automated installation using the APEX installer
+ * Fast and scalable tenant networking using FD.io/VPP as forwarder
+ * Layer 2 networking using VLANs, managed and controlled
+ through the VPP ML2 plugin
+ * Layer 3 connectivitiy for tenant networks supplied centrally
+ on the Control node through standard OpenStack mechanisms.
+ All layer 3 features apply, including floating IPs (i.e. NAT)
+ and security groups.
+
+Networking in this scenario using VPP
+-------------------------------------
+
+The apex-os-nosdn-fdio-noha scenario combines components from two key open
+source projects: OpenStack and Fast Data (FD.io). In order to make Fast Data
+(FD.io) networking available to this scenario, an ML2 mechanism driver and a
+light-weight control plane agent for VPP forwarder has been created. For
+details see also https://github.com/naveenjoy/networking-vpp/
+
+Networking-vpp provides a Neutron ML2 mechanism driver to bring the advantages
+of VPP to OpenStack deployments.
+
+It's been written to be as simple and readable as possible, which means it's
+naive; the aim was not to write the most efficient mechanism driver ever from
+right out of the gate, but to write something simple and understandable and see
+how well it works and what needs to be changed.
+
+As a general rule, everything was implemented in the simplest way, for two
+reasons: one is that one sees working results the quickes, and the other is
+that it's much easier to replace a simple system with a more complex one than
+it is to change a complex one. The current design will change, but the one
+that's there at the moment is small and easy to read, even if it makes you pull
+faces when you read it.
+
+Scenario Configuration
+======================
+
+To enable the "apex-os-nosdn-fdio-noha" scenario check the appropriate settings
+in the APEX configuration files. Those are typically found in /etc/opnfv-apex.
+
+File "deploy_settings.yaml" choose opendaylight as controller with version
+"boron" and enable vpp as forwarder::
+
+ global_params:
+ ha_enabled: false
+
+ deploy_options:
+ sdn_controller: false
+ sdn_l3: false
+ tacker: false
+ congress: false
+ sfc: false
+ vpn: false
+ vpp: true
+
+Limitations, Issues and Workarounds
+===================================
+
+There are no known issues.
+
+References
+==========
+
+
+ * FastDataStacks OPNFV project wiki: https://wiki.opnfv.org/display/fds
+ * Fast Data (FD.io): https://fd.io/
+ * FD.io Vector Packet Processor (VPP): https://wiki.fd.io/view/VPP
+ * ML2 VPP mechanisms driver: https://github.com/naveenjoy/networking-vpp/
+ * OPNFV Colorado release - more information: http://www.opnfv.org/colorado