Cos and 802.1p difference/Voice Vlan

From: Tomasz Szymanski (tomasz.szymanski@trecom.pl)
Date: Sat May 29 2004 - 11:48:56 GMT-3

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Hi all,

I have the question about the difference in Ethernet frames (taged and
untagged).

Where is the difference in CoS in untagged frame and dot1p priority in
tagged frame.
The question is about voice vlan and it's behaviour.

I would like to know if the frames from the computer connected to the
IPPhone are tagged or not by the IP phone and how they are tagged.

I would like to know what happens to the frames if I don't have trust on
the port and default CoS is set to 1. What happens to tagged and
untegged frame in this case?

Next message: Ashok Verma \(ashoverm\): "Multicasting ratelimiting"
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Maybe reply: MMoniz: "RE: Cos and 802.1p difference/Voice Vlan"
Maybe reply: Bob Sinclair: "Re: Cos and 802.1p difference/Voice Vlan"
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