Hello, i am a newb to SDN controllers and opendaylight. I installed the opendaylight controller and started the dlux gui accoring the the installation guide given. But after that it is assumed that the topology is created. How do I add the topology to the controller? I am not using mininet and I have actual physical routers. I have opewndaylight installed on my linux machine which is connected to a router. How would the controller learn about the router? Where and What configurations do we have to do at the controller end (ip address, etc)?