2 voice vlan configuration, Overview, Oui addresses – H3C Technologies H3C S5120 Series Switches User Manual

Page 154: Voice vlan configuration

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Voice VLAN Configuration

When configuring a voice VLAN, go to these sections for information you are interested in:

z

Overview

z

Configuring a Voice VLAN

z

Displaying and Maintaining Voice VLAN

z

Voice VLAN Configuration

Overview

As voice communication technologies grow more mature, voice devices are more and more widely

deployed, especially on broadband networks, where voice traffic and data traffic often co-exist. Usually,

compared to data traffic, voice traffic is given a higher transmission priority for the purpose of reducing

transmission delay and packet loss.

A voice VLAN is configured specially for voice traffic. After assigning the ports connecting to voice

devices to a voice VLAN, you can configure quality of service (QoS) parameters for the voice traffic,

thus improving transmission priority and ensuring voice quality.

Common voice devices include IP phones and integrated access devices (IADs). Only IP phones are

used in the voice VLAN configuration examples in this chapter.

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 Organizationally Unique Identifier

(OUI) address is regarded as voice traffic.

You can configure the OUI addresses in advance or use the default OUI addresses.

Table 2-1

lists the

default OUI address for each vendor’s devices.

Table 2-1 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

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