From: John Edom (jedom123@gmail.com)
Date: Fri Jan 02 2009 - 12:21:43 ARST
Hi,
Here i would add a question if i have a phone connect with switch port and
then a pc is connected with that phone. we do config like
interface FastEthernet 1/18
switchport access vlan 3
switchport voice vlan 5
switchport priority extend cos 1
mls qos trust cos
but if i configure
inter fa 1/18
switchport access vlan 3
switchport voice vlan 5
mls qos cos 1
mls qos cos override
mls qos trust device cisco-phone
are both configuration same?? purpose is when frames come from phone, these
should be trust and if fames come from pc, these should set to cos 1
Regards
On Fri, Jan 2, 2009 at 5:48 PM, Marko Milivojevic <markom@markom.info>wrote:
> Also, note that depending on the switch model, actual COS value may be
> passed on through the switch, but the switch will not act on it.
>
> On Thu, Jan 1, 2009 at 14:05, Bob Sinclair <bob@bobsinclair.net> wrote:
> > Hello Raheel,
> >
> > You have two options for associating frames with the default cos.
> > If you use "trust cos", then only untagged traffic will be marked to the
> > default cos. If you use "override" then both tagged and untagged traffic
> > will be set to the default cos.
> >
> > Either can be used on trunk or access. The main difference being that on
> > access links all frames are untagged. On trunks frames on the native
> vlan
> > will be untagged.
>
>
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