Jump to: navigation, search


Brocade Neutron Plugin


Openstack is an open source infrastructure as a service (IaaS) initiative for creating and managing large groups of virtual private servers in a cloud computing environment. Brocade Neutron Plugin for VDX/VCS provides a means to interface Openstack’s Networking (formerly Quantum Networking) to orchestrate Brocade’s physical switches.

In cloud environments where VMs are hosted by physical servers, the VMs see a new virtual access layer provided by the host machine. This new access layer can be created at the via many mechanisms e.g. Linux Bridges or a Virtual Switches. The policies of the virtual access layer (virtual network), when set must now be coordinated with the policies set in the hardware switches. Brocade’s Neutron Plugin helps in coordinating this behavior automatically without any intervention from the administrator.

Virtual and Physical Network Orchestration

Brocade Neutron Plugin implements the Neutron v2.0 API. Switches running NOS (e.g. VDX 67xx, VDX 87xx) are supported. It uses NETCONF at the backend to configure the Brocade switch.

The plugin orchestrates virtual network and physical networks at appropriate times in the life cycle of a 'Neutron network' and virtual machines.

             +------------+        +------------+          +-------------+
             |            |        |            |          |             |
             |            |        |            |          |   Brocade   |
             | Openstack  |  v2.0  |  Brocade   |  NETCONF |  VCS Switch |
             | Neutron    +--------+  Neutron   +----------+             |
             |            |        |  Plugin    |          |  VDX 67xx   |
             |            |        |            |          |  VDX 87xx   |
             |            |        |            |          |             |
             |            |        |            |          |             |
             +------------+        +------------+          +-------------+

Directory Structure

(this paragraph is relevant ONLY if you have download the Brocade Neutron Plugin from the repository located at: http://www.github.com/brocade/brocade )

Normally you will have your Openstack directory structure as follows:


This repository represents code that will be put into the brocade directory as:



ncclient v0.3.1 - Python library for NETCONF clients. http://github.com/brocade/ncclient

% git clone https://www.github.com/brocade/ncclient
% cd ncclient; sudo python ./setup.py install


1. Specify to Neutron that you will be using the Brocade Plugin - this is done by setting the parameter core_plugin in Neutron:

core_plugin = neutron.plugins.brocade.NeutronPlugin.BrocadePluginV2

2. Physical switch configuration parameters and Brocade specific database configuration is specified in the configuration file specified in the brocade.ini file:

% cat /etc/neutron/plugins/brocade/brocade.ini

username = admin
password = password
address  = <switch mgmt ip address>
ostype   = NOS

sql_connection = mysql://root:pass@localhost/brcd_Neutron?charset=utf8

Please see list of more configurable parameters in the brocade.ini file.

Running Setup.py

Running setup.py with appropriate permissions will copy the default configuration file to /etc/Neutron/plugins/brocade/brocade.ini. This file MUST be edited to suit your setup/environment.

% cd /opt/stack/neutron/neutron/plugins/brocade
% python setup.py


Please see special notes for devstack at: http://wiki.openstack.org/brocade-Neutron-plugin

Brocade Neutron plugin has been tested to work on Redhat and Ubuntu releases. Devstack is normally run by a non-root user 'stack'. It is advisable to create a userid 'stack' on your Linux machine.

% cd /home/stack
% git clone https://www.github.com/brocade/devstack
% cd devstack

In order to use Brocade Neutron Plugin, add the following lines in localrc, if localrc file does not exist you may have to create one:


As part of using devstack, the files above are copied over from Neutron to their final destination. So it will be advisable to edit the files appropriately.

/opt/stack/neutron/etc/neutron.conf -> /etc/neutron/neutron.conf
/opt/stack/neutron/etc/neutron/plugins/brocade/brocade.ini -> /etc/neutron/plugins/brocade/brocade.ini

Hence it is important to make any changes to the configuration in:


Run devstack as:

% cd /home/stack/devstack;  ./stack.sh

Example Topology

BQP Application.png