From: William Chen (kwchen@netvigator.com)
Date: Sun May 30 2004 - 10:44:31 GMT-3
Just to mention, there are two kinds of packets will send from the IP phone.
1. Signal Packets = COS 3
2. Voice Payload Packets = COS 5.
Therefore, it depends on what the question asking for, both answers 1 or 2
maybe wrong.
Best Regards,
William Chen
----- Original Message -----
From: "Yasser Abdullah" <yasser@alharbitelecom.com>
To: "'Tom Rogers'" <cccie71@yahoo.com>; <ccielab@groupstudy.com>
Sent: Sunday, May 30, 2004 4:06 PM
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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