Trust VoIP and remark Data

From: nhatphuc (nhatphuc@gmail.com)
Date: Wed Dec 12 2007 - 14:55:04 ART

Hi Group,

With question: Ensure that VoIP traffic originating from the IP phones
maintains its CoS value, while traffic originating from the PCs is
remarked with a CoS of 1

I see 2 ways to answer. The first seems to be better, but I don't see
anything wrong with the second. Which one do you choose? Please explain.

mls qos trust cos
switchport priority extend cos 1

and
mls qos trust device cisco-phone
mls qos cos 1 override

Thank you

Phuc

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