Dear Ryu developer:
    I am studying SDN through Ryu Controller and Mininet-WiFi, But I 
meet a Problem that I confused me two weeks. Sorry to bother you and thanks for 
any suggestion!
    I want to apply simple QoS by Ryu in mining-WiFi, so I configure 
queues in UserAP(CPqD switch), but after I use OFPActionSetQueue in ryu, it 
doesn't work, here is the code:


    actions = [parser.OFPActionOutput(out_port)]
    actions.insert(0, parser.OFPActionSetQueue(2))


    The result is strange that when I use h1 ping h4, the ICMP packet 
won't match the flow-table, sometimes ping is unreachable. Can you tell me how 
to use queues in ryu well?
    Best wishes!




 
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