dpctl error connecting to switch

Question

I'm going through openflow tutorial https://github.com/CPqD/ofsoftswitch13/wiki/OpenFlow-1.3-Tutorial when I try to execute

$dpctl dump-flows tcp:127.0.0.1:6634

or

$dpctl show tcp:127.0.0.1:6634

I'm always getting the same error

dpctl: Error connecting to switch show. (Address family not supported by protocol)

so can you please tell me why I'm getting this error?

Thanks in advance.

Answer 1

My mistake. I was creating the topology in Mininet specifying the controller as remote

sudo mn --mac --controller remote,ip=127.0.0.1

without running the controller on the machine first, so I just ran the controller first(NOX in my case)

cd nox/build/src
./nox_core -v -i ptcp:6633 switch

and that solved the problem. thanks