From: Schulz, Dave (DSchulz@dpsciences.com)
Date: Mon Jul 25 2005 - 08:30:57 GMT-3
Toonsh -
If the lab is asking to make sure that traffic is tagged, then this may be
referring to use dot1q encapsulation on the trunk, as opposed to ISL, which is
not tagged. Could this be what they are referring to? Just a thought.
Dave
-----Original Message-----
From: nobody@groupstudy.com
To: ccielab@groupstudy.com
Sent: 7/25/2005 2:00 AM
Subject: switchport voice vlan dot1p
Hi ,
Does anyone have a clear explanation as to what this command does
exactly
how the voice traffic is sent and tagged ect.
From what I have read it appears as if the frame that comes from the
phone
is tagged with a vlan header and within the tag the .1P bits are set
with
the COS value for traffic assigned by the phone.
All traffic appears to use the default native vlan 1 .
If that is the case is there a concept of a seperate vlan for VOICE and
seperate vlan for data when using "switchport voice vlan dot1p", how
does
the switch know what vlan to assign data too and what VLAN to assign
VOICE
too.
Thanking you in advance for your assistance.
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