Voice VLAN configuration

A voice VLAN is configured especially for voice traffic. After assigning the ports connecting to voice devices to a voice VLAN, the system automatically configures quality of service (QoS) parameters for voice traffic, improving the transmission priority of voice traffic and ensuring voice quality.

OUI addresses

A device determines whether a received packet is a voice packet by checking its source MAC address. A packet whose source MAC address complies with the voice device’s Organizationally Unique Identifier (OUI) address is regarded as voice traffic.

You can configure the OUI addresses of a device in advance or use the default OUI addresses. 1 lists the default OUI address for each vendor’s devices.

1.The default OUI addresses of different vendors

Number

OUI Address

Vendor

1

0001-E300-0000

Siemens phone

 

 

 

2

0003-6B00-0000

Cisco phone

 

 

 

3

0004-0D00-0000

Avaya phone

 

 

 

4

00D0-1E00-0000

Pingtel phone

 

 

 

5

0060-B900-0000

Philips/NEC phone

 

 

 

6

00E0-7500-0000

Polycom phone

 

 

 

7

00E0-BB00-0000

3Com phone

 

 

 

 

 

 

NOTE:

In general, as the first 24 bits of a MAC address (in binary format), an OUI address is a globally unique identifier assigned to a vendor by the IEEE. OUI addresses mentioned in this document, however, are different from those commonly used. In this document, OUI addresses are used by the system to determine whether a received packet is a voice packet. They are the results of the AND operation of a MAC address and a mask. For more information, see “Adding OUI addresses to the OUI list”.

You can manually remove the default OUI address of a device and then add new ones.

Voice VLAN assignment modes

A port can be assigned to a voice VLAN in one of the following modes:

∙In automatic mode, the system matches the source MAC addresses carried in the untagged packets sent when an IP phone is powered on against the device’s OUI addresses. If a match is found, the system automatically assigns the receiving port to a voice VLAN, issues ACL rules and configures the packet precedence. You can configure voice VLAN aging time on the device. The system will remove

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