On Feb 22, 2012, at 3:39 PM, ANAND AKELLA wrote: > Has anybody tried implementing QoS feature using OpenFlow switch. We need > help in understanding the feature and how we can implemented it using > OpenFlow.
In addition to the OFPAT_ENQUEUE action, the reference userspace switch also supports queue configuration as an OpenFlow extension: http://www.openflow.org/wk/index.php/Slicing It, too, is just configuring the Linux QoS implementation under the hood (it calls out to /sbin/tc ) Also, if I'm not mistaken (still a newbie here!), the OpenFlow 1.1 spec supports matching on the ToS bits, so couldn't you write a flow rule which matches on the ToS bits and has OFPAT_SET_QUEUE as the action (looks like 1.1 has changed the name from OFPAT_ENQUEUE)? Then you wouldn't need a controller involved at all... cheers, Andrew
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