From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Wed Dec 12 2007 - 16:19:13 ART
The first command tell the phone to set the CoS of Data Traffic to 1 (it
actually configures the phone).
The second (which actually requires cdp running) will override both Data and
Voice traffic with cos 1 (the second will override voice traffic with 1)
breaking your requirement.
On Dec 12, 2007 9:55 PM, nhatphuc <nhatphuc@gmail.com> wrote:
> 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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