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Webcast-Catalyst9k
New Member

Bandwidth Assignment on PFC QOS

As I understand that we can NOT assign specific bandwidth to any P and Q queue with PFC QOS configuration, can I use “wrr-queue bandwidth” and “wrr-queue queue-limit” or any other way to achieve the requirement as following:

It is WS-6724 (1p3q8t) with policing up to 300M from the carrier and want to have 5M of COS 5 traffic and remained 50% for COS3/4, 20% for COS2 and 30% for the rest.

This 7606 doesn't have SIP so we can't use MQC QOS nor the policy maps.

3 REPLIES
Silver

Re: Bandwidth Assignment on PFC QOS

Can you please provide a brief topology description specifying the direction of the traffic you want to apply the policing/queuing and in which interface(s) and direction you want to apply it?

To know about these commands you can use the following URL:

http://www.cisco.com/en/US/docs/routers/7600/ios/12.1E/command/reference/w1.html#wpxref43985

http://www.cisco.com/en/US/docs/routers/7600/ios/12.1E/command/reference/w1.html#wp1038823

New Member

Re: Bandwidth Assignment on PFC QOS

Thanks for the reply.

Our 7606 Gi3/24 connects to PE router, the PE have policing to 300M for ingress traffic and limited the EF (COS 5) traffic to 5M.

I am trying to setup egress queue on my Gi3/24 facing PE for the requirement as following:

5M of COS 5 traffic and remained 50% for COS3/4, 20% for COS2 and 30% for the rest.

Seems "wrr-queue queue-limit" only for WRR, how to assign bandwidth for priority queue?

New Member

Re: Bandwidth Assignment on PFC QOS

you can specify the wrr-queue queue size (Q1 to Q3) by using the 'wrr-queue queue-limit'. The remain percentage from your configuration will be implicitly applied to PQ. List if you use 'wrr-queue queue-limit 5 25 40', this will leave 30% queue size to PQ. My own question is that is this sufficient to limit the PQ bandwidth?

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