mininet for Debian
------------------

The default OpenFlow controller for mininet is provided by the
openvswitch-controller package; openvswitch provides a simple reference
implementation of OpenFlow.

However, mininet will try to run a separate ovs-controller process using
the default OpenFlow port (6633) which will conflict with the system
started ovs-controller process provided with the openvswitch-controller
package.

You can work around this by:

1) Running mininet using a different port for the ovs-controller:

  sudo mn --controller=ovsc,port=16633

2) Stopping and disabling the openvswitch-controller process:

  sudo service openvswitch-controller stop
  sudo update-rc.d openvswitch-controller disable

Mininet will display an error message and exit if it is unable to start
an ovs-controller process due to existing use of the default/specified
port.

 -- James Page <james.page@ubuntu.com>  Wed, 11 Jul 2012 09:51:39 +0100
