R2511-HP MSR Router Series Layer 2 - LAN Switching Configuration Guide(V5)

25
Configuring a voice VLAN
Feature and hardware compatibility
Feature
MSR90
0
MSR93X
MSR20-1
X
MSR20 MSR30 MSR50
MSR100
0
Configuring
a voice
VLAN
No No No No
Available only
on fixed Layer 2
Ethernet
interfaces of
MSR30-11E
and
MSR30-11F
routers and on
routers installed
with MIM and
XMIM Layer 2
switching
modules
Available
only on
routers
installed
with FIC
Layer 2
Ethernet
switching
modules
Yes
Overview
A voice VLAN is configured for voice traffic. After assigning ports that connect to voice devices to a voice
VLAN, the system automatically configures QoS parameters for voice traffic, to improve the transmission
priority of voice traffic and ensure voice quality.
Common voice devices include IP phones and 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. You can
manually remove the default OUI address of a device and then add new ones.
Table 1 lists the de
fault OUI address for each vendor's devices.
Table 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