From: Tarun Pahuja (pahujat@gmail.com)
Date: Thu Oct 25 2007 - 06:26:17 ART
Andrew,
All Layer 3 capable Switches have a default COS-TO-DSCP
mapping table as well as a DSCP-TO-COS mapping table. If you are
looking for Basic classification for your server traffic, even if you
can classify the ingress traffic at Layer2, the switch would
automatically classify packets at Layer 3 using COS-TO-DSCP table
lookup which can be modified as well.
HTH,
Tarun
On 10/24/07, Usankin, Andrew <Andrew.Usankin@twtelecom.com> wrote:
> Hi experts!
>
> I have a question of what is the best way to do the following.
>
> Say I need to mark all traffic coming from server port to CS5.
>
> 1.
> mac access-list extended MATCH-ALL-LAYER2
> permit any any
> !
> ip access-list extended MATCH-ALL-LAYER3
> permit ip any any
> !
> class-map match-all L2-TRAFFIC
> match access-group name MATCH-ALL-LAYER2
> class-map match-all L3-TRAFFIC
> match access-group name MATCH-ALL-LAYER3
> !
> !
> policy-map SET-ALL-TRAFFIC-TO-5
> class L2-TRAFFIC
> set dscp cs5
> class L3-TRAFFIC
> set dscp cs5
> Then just apply this policy on interface inbound.
>
> 2.
> policy-map SET-ALL-TRAFFIC-TO-5
> class class-default
> set dscp cs5
> Then again just apply this policy on interface inbound.
>
> 3.
> interface fa0/0
> no msl qos trust
> mls qos cos 5
> mls qos cos override
>
> I'd realy appreciate any ideas on what I'm missing here. Thanks!
>
> Andrew
>
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