Configuring A Voice Vlan; Overview; Oui Addresses; Voice Vlan Assignment Modes - HP 830 Series Configuration Manual

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Configuring a voice VLAN

Overview

A voice VLAN is dedicated to voice traffic. After the ports connecting to voice devices are assigned to a
voice VLAN, the system automatically modifies the QoS parameters for the voice traffic. This improves
transmission priority and ensures 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 document.

OUI addresses

A device determines whether a received packet is a voice packet by examining its source MAC address.
If the source MAC address of a received packet matches an organizationally unique identifier (OUI) in
the voice device OUI list maintained by the switch, the packet is regarded as a voice packet.
You can remove default OUI addresses and if needed, add them to the OUI list after their removal. You
can add OUI addresses to the OUI list maintained by the device, or use the default OUI list shown
in
Table 45
Table 45 The default OUI list
Number
1
2
3
4
5
6
7
An OUI address is usually the first 24 bits of a MAC address (in binary format). It is a globally unique
identifier assigned to a vendor by the IEEE. However, OUI addresses are used by the system to determine
whether received packets are voice packets and they are the results of the AND operation of a MAC
address and a mask in this document. For more information, see

Voice VLAN assignment modes

A port connected to a voice device (for example, an IP phone) can be assigned to a voice VLAN in one
of the following modes:
Automatic mode—The system matches the source MAC addresses in the untagged packets sent by
the IP phone upon its power-on against the OUI list. If a match is found, the system automatically
assigns the receiving port to a voice VLAN, issues ACL rules, and configures the packet precedence.
You can configure an aging timer for the voice VLAN. The system will remove the port from the voice
VLAN when the aging timer expires if no voice packet is received on the port during the aging timer.
for voice traffic identification.
OUI Address
0001-e300-0000
0003-6b00-0000
0004-0d00-0000
00d0-1e00-0000
0060-b900-0000
00e0-7500-0000
00e0-bb00-0000
137
Vendor
Siemens phone
Cisco phone
Avaya phone
Pingtel phone
Philips/NEC phone
Polycom phone
3Com phone
"Adding OUI addresses to the OUI
list."

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