How to classify traffic in CBWFQ?

Unanswered Question
Nov 24th, 2008


Is it possible to classify traffic based on specific attributes of routes learned by BGP through CBWFQ?

I think answer is No as there is no option available under class-map to match traffic based on BGP attributes.

Also, we can match prefix with BGP attributes using route-map, however route-map can't be called under class-map.

Please let me know if I'm missing anything here or if there is a way to achieve this.



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Giuseppe Larosa Mon, 11/24/2008 - 05:57

Hello Sourabh,

we have already talked about this.

Just another thought:

if you could do PBR with a route-map based on route tags and as action setting a qos-group you could on the outgoing interface use traffic classes that use qos-groups to define traffic.

However, I don't think that a route-map used for PBR allows to match on the route-tag.

This is something that should be tested

Hope to help


Giuseppe Larosa Mon, 11/24/2008 - 07:50

Hello Sourabh,

I did some tests on this many years ago.

It worked if I remember correctly.

If applicable to your scenario it can be used.

It allows to mark traffic based on BGP communities.

Hope to help



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