[ovs-discuss] qos capabilities

Ben Pfaff blp at nicira.com
Fri May 27 16:43:27 UTC 2011

On Thu, May 26, 2011 at 04:13:18PM -0700, Vjekoslav Brajkovic wrote:
> 1) Are there any examples out there that would help me understand its 
>    use-cases?  So far the only thing I've managed to find was this 
>    link:  http://openvswitch.org/?page_id=267

I don't know of use cases.

There is an example in the ovs-vsctl manpage.

> 2) I have quite a bit of experience with rate-limiting support that 
>    was introduced with the patch submitted by Jean Tourrilhes.  In 
>    that version, one is able to add/delete filters from the controller 
>    and dynamically add flows to those classes.  By looking at the code 
>    I was unable to find anything similar -- is that the case or am I 
>    missing something?

You can add and delete QoS classes by updating the QoS record in the
database to point to more or fewer Queue records.

You can migrate flows between classes by updating the OpenFlow flows
to output to a different queue.

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