From: Ty (tycampbell@comcast.net)
Date: Sun May 30 2004 - 08:36:09 GMT-3
From the Doc CD
In some situations, you also might connect a PC or workstation to the IP
phone. In this case, you can use the switchport priority extend cos
interface configuration command to configure the telephone through the
switch CLI to override the priority of the traffic received from the PC.
With this command, you can prevent a PC from taking advantage of a
high-priority data queue.
HTH!
----- Original Message -----
From: "Yasser Abdullah" <yasser@alharbitelecom.com>
To: "'Tom Rogers'" <cccie71@yahoo.com>; <ccielab@groupstudy.com>
Sent: Sunday, May 30, 2004 3:06 AM
Subject: RE: mls QoS
> For this particular value (5), both commands will work because the default
> priority use by the IP phone is 5.
>
> However, config # 2 doesn't actually set the IP phone priority. You are
> accepting (trusting) any value used by the ip phone (mls qos trust cos)
and
> forcing the phone to change the PC priority (switchport priority extend
cos
> 5).
>
> If your target priority for both (phone & PC) was, lets say 3, option 2
will
> not work.
>
> Brgds,
>
> Yasser
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Tom
> Rogers
> Sent: Sunday, May 30, 2004 3:14 AM
> To: ccielab@groupstudy.com
> Subject: mls QoS
>
> hello group,
>
> Can someone tell me the difference between 1) and 2)
>
> If asked to set the cos of phone=5 and pc= 5, what should I do?
>
> 1) interface FastEthernet0/19
> mls qos cos 5
> mls qos cos override
>
>
> 2) interface FastEthernet0/19
> switchport priority extend cos 5
> mls qos trust cos
>
> Thnx
>
> Tom
>
>
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