Hello. I'm trying to implement some kind of qos by limiting the rate of a port using queues.
The topology is the following: h1-eth0<->s1-eth1 s1-eth2<->s2-eth1 s2-eth2<->h2-eth0 s1-eth1 is ofport=1 s1-eth2 is ofport=2 s2-eth1 is ofport=1 s2-eth2 is ofport=2 The links speed is 100mb, I'm using openflow1.0 (also tried 1.3 version) and openvswitch 2.3 (also tried 2.0.2 version). So far I've created the 2 qos rows, one on port s1-eth2 and other on s2-eth1. On both those ports I've created a queue with id=1 with max rate=20000 and min rate=5000. This was done using this commands : sudo ovs-vsctl -- set port s1-eth2 qos=@newqos -- --id=@newqos create qos type=linux-htb other-config:max-rate=10000000 queues:1=@newQ -- --id=@newQ create queue other-config:min-rate=5000 other-config:max-rate=20000 sudo ovs-vsctl -- set port s2-eth1 qos=@newqos -- --id=@newqos create qos type=linux-htb other-config:max-rate=10000000 queues:1=@newQ -- --id=@newQ create queue other-config:min-rate=5000 other-config:max-rate=20000 After that I added 4 flows in order to H1 and H2 communicate through that queues: sudo ovs-ofctl add-flow s2 priority=50,dl_type=0x0800,nw_src=10.0.0.2,nw_dst=10.0.0.1,actions=enqueue:1:1 sudo ovs-ofctl add-flow s2 priority=50,dl_type=0x0800,nw_src=10.0.0.1,nw_dst=10.0.0.2,actions=output:2 sudo ovs-ofctl add-flow s1 priority=50,dl_type=0x0800,nw_src=10.0.0.1,nw_dst=10.0.0.2,actions=enqueue:2:1 sudo ovs-ofctl add-flow s1 priority=50,dl_type=0x0800,nw_src=10.0.0.2,nw_dst=10.0.0.1,actions=output:1 The hosts can now communicate however by doing iperf the result is around 90mb instead of being around 20mb Also if after that I run the command ovs-ofctl queue-stats s1 the result is: OFPST_QUEUE reply (xid=0x2): 0 queues What is the problem that causes this kind of behaviour? I've added the queues and I can see them on the table Queue as well as I can see the Qos rows on the table Qos. Help would be much apreciated. Regards, Nuno B.
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