Thanks for your reply Ben. I am aware that Openflow cannot be used to configure queues. What I am hoping to do is to pre-configure some queues on the physical port of a switch. I was thinking of doing this using Linux tc but as you indicate this can be done through the OVS database. Then the Openflow controller can decide to set OFPAT_QUEUE as the action of certain flows and map them to one of those queues. I do not want to configure any properties of these queues at runtime using Openflow. Is this possible?
In case it is possible, I will need to specify the value of queue_id in struct ofp_action_enqueue. I am assuming that I will get that while configuring the queue. --Akbar On Fri, Mar 4, 2011 at 10:26 PM, Ben Pfaff <b...@nicira.com> wrote: > On Fri, Mar 04, 2011 at 08:44:00PM +0500, Syed Akbar Mehdi wrote: > > Does OVS support queue configuration for the physical ports of a switch? > > Yes. It is configured through the OVS database using the QoS and Queue > tables: > http://openvswitch.org/ovs-vswitchd.conf.db.5.pdf > > > I have ovs-openflowd running in userspace on a Linux box (32-bit > > Ubuntu 10.10) and I send it an Openflow message of type > > OFPT_QUEUE_GET_CONFIG_REQUEST from the controller (NOX 0.9 Zaku). The > > OVS installation I am using is the latest version, checked out from > > git a couple of days back. > > ovs-openflowd does not support queue configuration. You have to use > ovs-vswitchd. > > OVS does not support OFPT_QUEUE_GET_CONFIG_REQUEST. It would not help > anyway, because OpenFlow only defines one queue property which doesn't > include enough information to accurately specify any of the forms of QoS > that OVS supports. > > You should not expect to use OpenFlow to configure queues anyway, since > OpenFlow 1.0 says, in section 5.3.4: "Queue configuration takes place > outside the OpenFlow protocol, either through a command line tool or > through an external dedicated configuration protocol." >
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