From: Ralph (Mandela@myrealbox.com)
Date: Sun Nov 06 2005 - 10:54:11 GMT-3
Ryan:
The "mls qos trust cos" command is a classification command that is applied on ingress interfaces. Classification is performed on ingress; while queuing and scheduling is done on egress interfaces.
Your configuration below is typically configured on egress interfaces; the "mls qos trust cos" command should be on the ingress interface.
HTH
Ralph
-----Original Message-----
From: The Great Ryan <pv.ryan@gmail.com>
To: Cisco certification <ccielab@groupstudy.com>
Date: Sun, 6 Nov 2005 08:48:48 +0800
Subject: cos classification of FastEthernet port on Catalyst 3550 Switch
Hi Group,
During cos classification of packet when entering FastEthernet port on
Catalyst 3550 switch, do I need to trust the cos value before
performing cos-mapping ?
i.e.
interface FastEthernet 0/1
mls qos trust cos <--- Is this needed to performing cos-mapping ?
wrr-queue cos-map 1 5 6 7
wrr-queue cos-map 2 2 3 4
wrr-queue cos-map 3 1
wrr-queue cos-map 4 0
Thanks !
Ryan
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