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:
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Displaying and Maintaining Voice VLAN
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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.
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