3Com MSR 50 Series, Руководство по настройке

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25
V
OICE
VLAN C
ONFIGURATION
When configuring Voice VLAN, go to these sections for information you are
interested in:
■
“Introduction to Voice VLAN” on page 497
■
“Configuring the Voice VLAN” on page 500
■
“Displaying and Maintaining Voice VLAN” on page 501
■
“Voice VLAN Configuration Examples” on page 502
n
■
Voice VLAN automatic mode and secure mode are not supported on MSR 20
series routers.
■
Voice VLAN automatic mode and secure mode are not supported on SIC-4FSW
and DSIC-9FSW modules.
■
Voice VLAN automatic mode and secure mode are supported on 16FSW and
24FSW modules.
Introduction to Voice
VLAN
Voice VLANs are configured specially for voice traffic. By adding the ports that
connect voice devices to voice VLANs, you can configure quality of service (QOS
for short) attributes for the voice traffic, increasing transmission priority and
ensuring voice quality. A device determines whether a received packet is a voice
packet by checking its source MAC address. Packets containing source MAC
addresses that comply with the voice device Organizationally Unique Identifier
(OUI for short) addresses are regarded as voice traffic, and are forwarded in the
voice VLANs.
You can configure the OUI addresses in advance or use the default OUI addresses
as listed in
Table 17 .
Table 17 The default OUI addresses of devices
Number OUI address Vendors
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