From: Chris Lewis \(chrlewis\) (chrlewis@cisco.com)
Date: Fri Jun 24 2005 - 16:03:55 GMT-3
This is a config that I believe works to make vlan 50 the voice vlan,
and vlan 2 to be the data vlan, then sets data from the PC to CoS 0 and
trusts CoS from the phone.
Mls qos
Vlan 50
Name voice vlan
Int fa0/16
Switch access vlan 2
Switch trunk encap dot1q
Switch trunk native vlan 2
Switch mode trunk
Switch voice vlan 50
switchport priority extend cos 0
mls qos trust cos
The switch access configuration in the interface defines what vlan the
port belongs to if for some reason the port stops trunking. Voice vlan
has to work on a trunk port for there to be traffic that are members of
two vlans on it.
It could be possible that the documentation you refer to is listing a
restriction for configuring port security in addition to voice vlan,
although I don't know for sure.
Chris
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
gladston@br.ibm.com
Sent: Wednesday, June 22, 2005 12:14 PM
To: ccielab@groupstudy.com
Subject: Voice VLAN - Access ports
Hi,
Looking for Port security information I read this:
"Voice VLAN is only supported on access ports and not on trunk ports,
even though the configuration is allowed"
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225seb/scg/s
wtrafc.htm#wp1038501
Some time ago I was researching about this subject (if it would be
allowed to configure an interface connected to an IPPhone with
'switchport mode trunk').
One of the answers was 'yes'.
Do you know if an IPPhone only works if the port is configured as access
port?
If yes, how does it work, considering the previous Cisco statement?
Thanks for any feedback.
This archive was generated by hypermail 2.1.4 : Wed Jul 06 2005 - 14:43:43 GMT-3