From: John Underhill (stepnwlf@magma.ca)
Date: Wed Jun 16 2004 - 13:41:47 GMT-3
Depends on the phone and vendor.. cisco phones mark the cos field, others do
not..
----- Original Message -----
From: "Koen Peetermans" <K.Peetermans@chello.be>
To: "'Richard Dumoulin'" <richard.dumoulin@vanco.es>;
<ccielab@groupstudy.com>
Sent: Wednesday, June 16, 2004 12:20 PM
Subject: RE: Voice vlan setting
> Probably a stupid question, but since I've never worked with an IP-Phone
> might as well ask it :
>
> Are all these commands executed on the catalyst switch ? I find it rather
> strange that the "phone overrides pc traffic" with a command executed on
the
> catalyst switch. Is this right, does the phone "know" what to do with COS
> because of the command on the catalyst, or does the catalyst does this job
> and not the phone ?
>
> Koen.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Richard Dumoulin
> Sent: woensdag 16 juni 2004 17:59
> To: Tom Young; ccielab@groupstudy.com
> Subject: RE: Voice vlan setting
>
> Do you want the pc attached to the phone to be trsuted by the phone ? If
yes
> then you need "switchport priority extend trust". Then the switch will
trust
> both the voice and the pc thx to "mls qos trust cos".
> If not then just "mls qos trust cos" as the phone will override pc traffic
> to COS 0,
>
> --Richard
>
> -----Original Message-----
> From: Tom Young [mailto:gitsyoung@yahoo.co.jp]
> Sent: miircoles, 16 de junio de 2004 17:08
> To: ccielab@groupstudy.com
> Subject: Voice vlan setting
>
>
> Hi, group
>
> Look the two commands below for setting voice vlan. If I
> want to trust a VoIP telephone setting, should I need set
> the two command on the voice vlan interface ?
>
> switchport priority extend trust
> mls qos trust cos
>
> Thanks alot
>
>
>
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