Voice Vlan

Unanswered Question
Feb 24th, 2008


what are command required for voice and data traffic?

Case 1:

Let say voice is vlan 100 and data vlan 200.

Case 2:

Voice Vlan0 ( by using dot1p )and data will be native.


I have this problem too.
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dongdongliu Sun, 02/24/2008 - 02:23


case 1:

switch---IP Phone---PC

int f0/1

switchport access vlan 100

switchport trunk native vlan 100

switchport voice vlan 200

switchport trunk enc dot1q

switchport mode trunk

cdp enable


power inline auto

since voice vlan is taged, QoS for voice is needed.

a.cruea1980 Mon, 02/25/2008 - 10:13

On newer switches you don't have to switchport mode trunk.

The trunk is auto-negotiated.

All you need is:

switchport access vlan (vlan)

switchport voice vlan (vlan)

Nothing more, nothing less.


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