Voice VLAN configuration (available only on
the A3100 v2 EI)
Overview
A voice VLAN is configured for voice traffic. After assigning the ports that connect to voice devices to a
voice VLAN, the system automatically configures quality of service (QoS) parameters for voice traffic, to
improve the transmission priority of voice traffic and ensure voice quality.
NOTE:
Common voice devices include IP phones and integrated access devices (IADs). Only IP phones are used
in the voice VLAN configuration examples in this document.
OUI addresses
A device determines whether a received packet is a voice packet by evaluating its source MAC address.
A packet whose source MAC address complies with the Organizationally Unique Identifier (OUI)
address of the voice device is regarded as voice traffic.
You can configure the OUI addresses of a device in advance or use the default OUI addresses. Table 14
lists the default OUI address for each vendor’s devices.
Table 14 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 that IEEE assigns to a vendor. In this document, however, OUI addresses are addresses that
the
system uses to determine whether a received packet is a voice packet. They are the results of the AND
operation of the arguments
mac-address
and
oui-mask
in the voice vlan mac-address command.
• You can remove the default OUI address of a device manually and then add new ones manually.
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