====== Voice VLAN ======

===== Configuration IOS =====

==== Single Access VLAN ====
  * (Optional) Enable 802.1p tag (VLAN ID=0) to include COS value
  * Voice is put into vlan 261
<code>
interface FastEthernet 0/1
  switchport mode access
  switchport voice vlan dot1p
  switchport access vlan 261
</code>

==== Voice VLAN ====
  * Voice is put into vlan 261
  * Data is put into vlan 262
<code>
interface FastEthernet 0/1
  switchport mode access
  switchport voice vlan 261
  switchport access vlan 262
</code>

==== Trunk Port ====
  * Voice is put into vlan 261
  * Data is put into vlan 262 (native untagged)
  * Allow more than two VLAN on port e.g. maybe PC need multiple VLAN to be trunk
  * Important to add voice vlan to trunk
<code>
interface FastEthernet 0/1
  switchport trunk encapsulation dot1q
  switchport mode trunk
  switchport trunk native vlan 262
  switchport voice vlan 261
  switchport trunk allowed vlan 261
</code>

===== Configuration CATOS =====

==== Single Access VLAN ====
  * (Optional) Enable 802.1p tag (VLAN ID=0) to include COS value
  * Voice is put into vlan 262
<code>
set port auxiliaryvlan 2/1-3 dot1p
set vlan 262 2/1-3
set trunk 2/1-3 off
</code>

==== Voice VLAN ====
  * Voice is put into vlan 261
  * Data is put into vlan 262
<code>
set port auxiliaryvlan 2/1-3 261
set vlan 262 2/1-3
set trunk 2/1-3 off
</code>

==== Trunk Port ====
  * Voice is put into vlan 261
  * Data is put into vlan 262 (native untagged)
  * Allow more than two VLAN on port e.g. maybe PC need multiple VLAN to be trunk
  * Important to add voice vlan to trunk
<code>
set trunk 2/1-3 on
clear trunk 2/1-3 1-4096
set vlan 262 2/1-3
set port auxiliaryvlan 261 2/1-3
set trunk 261 2/1-3
</code>