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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
Eth1/0/1
SwitchA
Eth1/0/2
IP Phone2
(Untag)
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.
