Ryu OF version error

Question

I'm trying to integrate the REST API to a simple switch based on the example in the Ryu book, here: chapter 4 here

now when I run my code I get an error stating the OF version i'm using isn't supported and breaks at the event EventOFPHello. Even though I explicitly set the OF version to 1.3 as required as well as make sure the ports on mininet and ryu are matching!

am I missing something ?

Here's a screenshot of the error message I'm getting

Answer 1

Ok, I'm not entirely sure if this was causing the problem, but I managed to get it working by updating openvswitch from 1.1 to a newer version (2.3.0)