RE: Proper config of voice port?

You should NOT be using Method 1 (this was a older method first used with 3500XLs back in the CallManger 3x/4x days) but has been depreciated. Voice vlan is not supported on Trunk ports, only access ports. Check the Configuration Guide for Voice Vlans for the model switch your using.
https://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_40_se/configuration/guide/swvoip.pdf

You don't want every port a Trunk port. The phones will tag on the voice vlan using method 2 which is the proper method.

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Usama Pervaiz
Sent: Tuesday, September 14, 2010 3:05 PM
To: Cisco certification
Subject: Proper config of voice port?

Hello all,

I have a question on what the best practice is on configuring a port for voice. I have see 2 different configs and am told by different people that this is the way its suppose to be done. Please provide pro's and cons for both. In whaT case is VLAN hoping more likely. Does the command switchport voice detect cisco-phone help in preventing vlan hopping?

Thanks

Method 1:

interface GigabitEthernet0/1
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 50
 switchport mode trunk
 switchport voice vlan 80
 snmp trap mac-notification change added no mdix auto storm-control unicast level pps 10k 9.5k storm-control action trap spanning-tree portfast trunk

Method 2:

interface GigabitEthernet0/5
  switchport access vlan 50
 switchport mode access
 switchport voice vlan 80
 snmp trap mac-notification change added no mdix auto storm-control unicast level pps 10k 9.5k storm-control action trap spanning-tree portfast

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Received on Tue Sep 14 2010 - 21:02:14 ART