Mininet openflow tutorial

Question

I am new to mininet and trying to follow the tutorial on mininet/openflow https://github.com/mininet/openflow-tutorial/wiki/Learn-Development-Tools

I have a problem with the Wireshark capture, it's only capturing TCP packets on the lo interface, no OpenFlow packets at all.

any idea what might be wrong?

Cheers, ami

Answer 1

I think you use openflow on port 6634 but as you can see here in wireshark documentation it expects to see OpenFlow packets on port 6633 or 6653.

I prefer to use third party controller but if you want to use mininet default controller, you can set its port with:

sudo controller ptcp:6653

Answer 2

mininet

when starting Mininet, it sets the controller in my case to port 6653. Calling the openflow controller later on, I had to specify the port too:sudo controller ptcp:6653