The next step we will carry out is starting the Ryu controller using the following command:

>cd ryu
>bin/ryu-manager --verbose ryu/app/rest_router.py

Upon starting the controller, it can be seen that wsgi is also started on http://0.0.0.0:8080/. This is a unified framework for connecting web applications and web servers in python. Upon execution, you should have the following log response to verify that the setup of the simple router is complete: