Catalyst QoS question

[Thorsten997]

Which queue is priority queue on 2960, 3560, and 3750 switches?

[Joseph W. Doherty · Accepted solution]

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Posting

If I recall correct, it's egress queue one on the 3560/3750 (and I think the 2960 too).

You need to activate QoS and also activate priority-queue out (also for egress).

[Thorsten997]

Joseph, you were right, Queue 1 is priority queue on 2960, 3560, and 3750 switches.

The "show mls qos maps cos-output-q" displayed the ouput below on all of these platforms:

Cos-outputq-threshold map:

cos:  0   1   2   3   4   5   6   7

------------------------------------

queue-threshold: 2-1 2-1 3-1 3-1 4-1 1-1 4-1 4-1

Thanks for trying to help.