Voice Vlan Configuration; Introduction To Voice Vlan - 3Com Switch 4800G 24-Port Configuration Manual

10
Introduction to Voice
VLAN
Voice VLAN Modes on a
V VLAN C
OICE
When configuring Voice VLAN, go to these sections for information you are
interested in:
"Introduction to Voice VLAN" on page 99
■
"Configuring Voice VLAN" on page 101
■
"Displaying and Maintaining Voice VLAN" on page 103
■
"Voice VLAN Configuration Examples" on page 103
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A voice VLAN is configured specially for voice traffic. By adding the ports that
connect voice devices to the voice VLAN, you can configure quality of service (QOS
for short) attributes for the voice traffic, improving 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 to the
voice VLAN.
You can configure the OUI addresses in advance or use the default OUI addresses,
which are listed as follows.
Table 23 The default OUI addresses of different vendors
Number
1
2
3
4
5
6
7
n
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 IEEE (Institute of Electrical
and Electronics Engineers).
You can add or remove default OUI address manually.
■
There are two voice VLAN modes on a port: automatic and manual (the mode here
Port refers to the way of adding a port to a voice VLAN).
In automatic mode, the system identifies the source MAC address contained in
■
the protocol packets (untagged packets) sent when the IP phone is powered on
ONFIGURATION
OUI address
0001-e300-0000
0003-6b00-0000
0004-0d00-0000
0060-b900-0000
00d0-1e00-0000
00e0-7500-0000
00e0-bb00-0000
Vendors
Siemens phone
Cisco phone
Avaya phone
Philips/NEC phone
Pingtel phone
Polycom phone
3Com phone