QOS Q.

Unanswered Question
Jul 19th, 2008

When want to match RTP traffic on router,

Do i need to trust cos in switches & map to correct dscp then trust dscp on R's int then map to correct dscp value then finally match RTP DSCP 46??

Plz advice

I have this problem too.
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Chris Deren Sun, 07/20/2008 - 06:55

First you will need to trust the switchport the device is connected to, by either issueing trust cos, or if you have IP phones trust ipphone, then on the uplink port to the router you need to trust the dscp by issuing "mls qos trust dscp", you will also require dscp-cos and mapping. On the router itself you dont need to do any mapping nor trust, simply create your LLQ configuration to match for dscp values.

HTH,

Chris

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