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Neutron/NEC OpenFlow Plugin

< Neutron
Revision as of 13:13, 28 November 2013 by Amotoki (talk | contribs) (Amotoki moved page Quantum NEC OpenFlow Plugin to Neutron/NECOpenFlowPlugin: Renaming Quantum to Neutron)

Abstract

NEC OpenFlow plugin talks to OpenFlow Controller and each Quantum network would be mapped to an virtual layer-2 network slice on an OpenFlow enabled network. The interface between the Quantum plugin and OpenFlow Controller is RESTful API. This API is supported by two implementations:Tream Sliceable Switch (OSS) and NEC ProgrammableFlow Controller (NEC Commercial Product).

This plugin consists of two components: "Plugin" and "Agent".

  • Plugin: It processes Quantum API calls and controls OpenFlow controller to handle logical networks on OpenFlow enabled network.
  • Agent: It runs on each compute node. It gathers a mapping beween a VIF and a switch port from local Open vSwitch and reports it to the plugin.

Requirements

Design

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Communication between plugin and agent

This plugin uses "common-rpc" in openstack-common for the agents to communicate with the plugin and will conform to the convention for scalable-agent-comms. The topic name for RPC will be set to "quantum.plugin" as proposed in the blueprint scalable-agent-comms.

Integration with Nova

There are no need for additional features in Nova. This implementation utilizes a current libvirt VIF driver and linux-net interface driver.

How to run this plugin

Using devstack

Devstack for this plugin is available at https://github.com/nec-openstack/devstack-quantum-nec-openflow .

  • This installs Tream Sliceable Switch (OSS OpenFlow Controller) and run devstack for this plugin.
  • Sample localrc files are available in samples/nec-openflow:
    • Controller node with OpenFlow controller : samples/nec-openflow/localrc
    • Compute node : samples/nec-openflow/localrc-hv
  • Branches
    • folsom for stable/folsom release
    • develop for trunk (next release)

Using Ubuntu packages

To be written.

How to get

Configuration

Havana

Quantum is renamed to Neutron.

  • neutron.conf
# Neutron plugin provider module
core_plugin = neutron.plugins.nec.nec_plugin.NECPluginV2
  • Plugin specific configurations /etc/neutron/plugins/nec/nec.ini . Section "[OFC]" is particular configurations to NEC OpenFlow plugin.
[OFC]
# OpenFlow Controller Host and Port to connect.
host = 127.0.0.1
port = 8888
# Drivers are in neutron/plugins/nec/drivers/ .
driver = trema
# PacketFilter is available when it's enabled in this configuration
# and supported by the driver.
enable_packet_filter = true
  • neutron plugin agent configuration : needs to use OVSInterfaceDriver to use DHCP agent (dhcp_agent.ini), L3 agent (l3_agent.ini) and other service agent (such as LBaaS HAProxy agent).
interface_driver = quantum.agent.linux.interface.OVSInterfaceDriver
ovs_use_veth = True
  • nova.conf : same as ML2 plugin
libvirt_vif_driver=nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver

Grizzly

  • Only difference from Folsom is 'interface_driver' in dhcp_agent.ini and l3_agent.ini. OVSVethInterfaceDriver is now merged into OVSInterfaceDriver.
interface_driver = quantum.agent.linux.interface.OVSInterfaceDriver
ovs_use_veth = True
  • Other configurations are same as Folsom.

Folsom

  • quantum.conf
# Quantum plugin provider module
core_plugin = quantum.plugins.nec.nec_plugin.NECPluginV2
# Path to the extensions.
# It must be abosolute path (or relative path from the directory where quantum-server is invoked)
api_extensions_path = /opt/stack/quantum/quantum/plugins/nec/extensions/
  • Plugin specific configurations /etc/quantum/plugins/nec/nec.ini . Section "[OFC]" is particular configurations to NEC OpenFlow plugin.
[OFC]
# OpenFlow Controller Host and Port to connect.
host = 127.0.0.1
port = 8888
# Drivers are in quantum/plugins/nec/drivers/ .
driver = trema
# PacketFilter is available when it's enabled in this configuration
# and supported by the driver.
enable_packet_filter = true
  • quantum agent configuration : needs to use OVSVethInterfaceDriver to use DHCP agent (dhcp_agent.ini), L3 agent (l3_agent.ini). It is a derivative of OVSInterfaceDriver that use veth netdev. It will be integrated into OVSInterfaceDriver.
interface_driver = quantum.agent.linux.interface.OVSVethInterfaceDriver
  • nova.conf : same as OVS plugin
libvirt_vif_driver=nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver

Essex

Essex version of Quantum NEC OpenFlow plugin is available at https://github.com/nec-openstack/quantum-openflow-plugin . Note that the implemetation of Essex version uses a dedicated VIF driver to gather a mapping beween a VIF and a switch port from local Open vSwitch. The proposed version of this plugin uses the agent for this purpose.

Related websites

(Contact: Ryota Mibu, Akihiro Motoki, NEC)