Developing Software-Defined Networks with Ryu controller

Ryu is an SDN controller written in Python. As a component-based application, Ryu is easy to extend for network management and control. It supports various SDN protocols, including OpenFlow, Netconf, and OF-CONFIG.

Getting ready

First we need to install Ryu:

$ sudo pip install ryu

It is very simple as it can be installed with pip.

Confirm Ryu has been installed correctly by using the following command:

$ sudo mn --controller=ryu,ip=127.0.0.1 --topo linear,2
*** Creating network
*** Adding controller
warning: no Ryu modules specified; running simple_switch only
*** Adding hosts and stations:
h1 h2 
*** Adding switches and access point(s):
s1 s2 
*** Adding link(s):
...