The configuration of QoS is done through the OVSDB protocol, which handle switch-level configuration. You can then use OpenFlow to direct flows to particular queues that you've configured through OVSDB. There are C and Python bindings to OVSDB (but I don't think NOX makes use of them) or you can use ovs-vsctl as a CLI interface to OVSDB.
There's an example of configuring QoS towards the end of the ovs-vsctl man page. The ovs-ofctl man page describes the enqueue and set_queue actions that can be used to direct flows to the queues you've configured. --Justin On Jun 28, 2012, at 12:43 AM, trinh tri wrote: > Dear openvswitch dev! > > I'm trying to implement a system which can dynamically control the flow rate > limiting of openvswitch. And would like control that rate from NOX controller > via openflow protocol. > > Could you suggest me how to implement that system and is there any example > about that system to follow? > > Thank you very much > Trinh Minh Tri > ------------------------------------------------- > PhD Student, Department of Electrical Engineering > Chulalongkorn University, Bangkok 10330, Thailand. > Phone:0824566602 > Email: no...@yahoo.com > _______________________________________________ > dev mailing list > dev@openvswitch.org > http://openvswitch.org/mailman/listinfo/dev _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev