From: Chee Chew Leong (cleong3@csc.com)
Date: Fri Oct 06 2006 - 06:22:57 ART
As you know the PC connect to the phone is not a trunk port.
The phone will set the CoS value from the PC traffic if we are using
switchport priority extended cos cos_value
If we would to trust the CoS value of the PC traffic by using
switchport priority extended cos trust
My question is how does this phone trust the CoS from the PC as the
connection between phone and PC is not a trunk. I am a bit blurred on this
part.
"Roberto Fernandez" <rofernandez@us.telefonica.com>
Sent by: nobody@groupstudy.com
09/30/2006 04:51 AM
Please respond to
"Roberto Fernandez" <rofernandez@us.telefonica.com>
To
"Tony Paterra" <apaterra@gmail.com>, "Cisco certification"
<ccielab@groupstudy.com>
cc
Subject
RE: switchport priority extend...
Tony,
It is definitely A.)
Priority extend is an instruction the switch extends to the phone. The
phone is the one who actually sets de CoS (anyone correct me if I'm
wrong)
Best Regards,
Roberto
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Tony Paterra
Sent: Friday, September 29, 2006 3:56 PM
To: Cisco certification
Subject: switchport priority extend...
From reading the DocCD I'm not clear on what this command does...
A.) It either trusts or overrides all traffic sent from a PC
connected to the back of an IP Phone
B.) It either trusts or overrides all traffic sent from a device
connected to a switchport
My gut tells me that it is B.) and all traffic entering that port (be
it from an IP Phone or a PC) will be re-tagged or trusted.
Thoughts?
Thanks,
-- Tony Paterra apaterra@gmail.com
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