[cisco-voip] Simple VOIP question: Switch related

[James Buchanan]

Do a  show vlan and make sure vlan 2 exists.

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Matthew
Linsemier
Sent: Tuesday, July 22, 2008 12:57 PM
To: Jeff Cartier; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Simple VOIP question: Switch related

 

Do you have CDP enabled on the switch?  Cisco phones use CDP voice vlan
functionality.

Matt


On 7/22/08 1:00 PM, "Jeff Cartier" <jcartier at acs.on.ca> wrote:


I'm having the worst time trying to figure out a problem.
 
The issue is that a 7912 phone seems to be getting an IP address in the
data subnet.  We've tried two configurations on the switchport level and
neither are working...
 
Interface fa0/1
switchport mode access
switchport voice vlan 2
srr-queue bandwidth share 10 10 60 20
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
 
AND/OR
 
Interface fa0/1
Switchport mode trunk
switchport trunk encapsulation dot1q
switchport voice vlan 2
srr-queue bandwidth share 10 10 60 20
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
 
And yet the phone keeps receiving an IP address in the data subnet.
 
We've verified the following:
- helper-address on the router
- correct DHCP scope
 
 

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