From: Stefan Grey (examplebrain@hotmail.com)
Date: Thu Oct 13 2005 - 16:50:25 GMT-3
Thank you very much Chris for the link, those explanation is really
invaluable. I think this is one of those things which someone can't learn
just from books and documetnation but from lists like this.
Well, I wanted to ask another question to this topic as well
1. if we wan rewrite the cos value of traffic generated both by Phone and
the trafic behind the 7960 phone would such configuration be just enough??:
mls qos cos 1
mls qos cos override
to rewrite all the traffic. (as I understand Yes but I just need the
confirmation I am thinking correctly)
2. When we configure:
switchport priority extend cos 2
mls qos cos 1
mls qos cos override
Would this still mean the all traffic will be rewritten to cos 1. And mls
qoc cos command has biggest priority than switchport priority extend cos 2
command for traffic behind the phone??
3. And to make the situation just crazy and far from reality... Could be
trust the cos value of the traffic behind the phone but ovveride the traffic
from the phone itself.
Thanks.
>From: Chris Lewis <chrlewiscsco@yahoo.com>
>To: Stefan Grey <examplebrain@hotmail.com>, ccielab@groupstudy.com
>Subject: Re: Voice VLANS Date: Thu, 13 Oct 2005 09:31:31 -0700 (PDT)
>
>Google of the archives is wonderful for this sort of thing :)
>
>http://shop.groupstudy.com/archives/ccielab/200506/msg01535.html
>
>Stefan Grey <examplebrain@hotmail.com> wrote:
>Hello,
>
>While learning this I read that when a phone is connecte to the 3550 switch
>it will automatically form an 802.1q trunk to the phone.
>
>interface fa0/1
>switchport voice vlan 2
>sw acc vlan 3
>
>Such a question appeared in my head... Would it be then ok to configure in
>such situation statical trunk configuration?? ... like
>
>int fa0/1
>sw trunk enc dot1q
>sw mode trunk
>
>If yes is that used in some particular situations in the real networks (or
>it is always automatically detected).
>And if yes wouldn't be it just mixing of commands of different switchport
>modes??
>
>sw trunk ..commands are the commands of the trunk mode of the port and sw
>acc command would be the access command of the switch.
>
>Thanks,
>
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