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VOICE VLAN CONFIGURATION GUIDE

Configuring Voice

In automatic mode, the switch configured with voice VLAN checks the source

VLAN

MAC address of each incoming packet against the voice device vendor OUI. If a

 

match is found, the switch assigns the receiving port to the voice VLAN and tags

 

the packet with the voice VLAN ID automatically.

 

When the port joins the voice VLAN, a voice VLAN aging timer starts. If no voice

 

packets have been received before the timer expires, the port leaves the voice

 

VLAN.

 

In manual mode, you need to manually assign a port to or remove the port from

 

the voice VLAN.

Network Diagram

Figure 7 Network diagram for voice VLAN in automatic mode

IP Phone1

(Tag)

PC 000f-e234-1234

Eth1/0/1

SwitchA

Eth1/0/2

IP Phone2

(Untag)

Oui:000f-2200-0000

Voice VoIP Network Gateway

SwitchB

Server

Networking and As shown in Figure 7, PC is connected to Ethernet 1/0/1 of Switch A through IP Configuration phone 1, and IP phone 2 is connected to Ethernet 1/0/2 of Switch A. IP phone 1 Requirements sends out voice traffic with the tag of the voice VLAN, while IP phone 2 sends out

voice traffic without any VLAN tag. Configure voice VLAN to satisfy the following requirements:

VLAN 2 functions as the voice VLAN for transmitting voice traffic, and set the aging time of the voice VLAN to 100 minutes. VLAN 6 transmits user service data.

Ethernet 1/0/1 and Ethernet 1/0/2 can recognize voice traffic automatically. Service data from PC and voice traffic are assigned to different VLANs and then transmitted to the server and the voice gateway respectively through Switch B.

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3Com 5500G, 4210, 4200G manual Voice Vlan Configuration Guide, Configuring Voice, Packet with the voice Vlan ID automatically