From: Herbert Maosa (asawilunda@googlemail.com)
Date: Mon Aug 06 2007 - 19:31:48 ART
I believe this is used for both WRED and Tail Drop, to specify the mapping
between DSCP values and drop thresholds.
For each of the four queues, you specify two drop thresholds ( low, high ).
Then you need to specify which DSCP values fall under either one of the two
thresholds. This is where you use the wrr-queue dscp-map command, to map the
DSCP values to the thresholds.
Herbert.
On 8/6/07, Toh Soon, Lim <tohsoon28@gmail.com> wrote:
>
> Hi All,
>
> Does anyone know exactly how the "wrr-queue dscp-map" interface config
> command is used on a Catalyst 3550?
>
> From DocCD I understand it's used on the ingress interface to map trusted
> DSCP values to WRED thresholds (1 or 2). I mean, this happens before DSCP
> mutation (if one is configured) takes action?
>
> If DSCP mutation is configured, regardless of what the "mutated" internal
> DSCP value is and the resultant mapped COS value is before egress
> scheduling, the packets will be assigned to the WRED threshold which we
> specified earlier on the ingress interface?
>
> Please help me understand better.
>
>
> Thank you.
>
> B.Rgds,
> Lim TS
>
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-- Kindest regards, hm
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