H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 116)

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Number OUI address Vendor
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 assigned to a vendor by IEEE. OUI addresses mentioned in this document, however, are
different from those in common sense. OUI addresses in this document are used by the system to
determine whether a received packet is a voice packet. They are the results of the AND operation of the
two 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.
Voice VLAN assignment modes
A port can be assigned to a voice VLAN in one of the following modes:
• In automatic mode, the system matches the source MAC address carried in the untagged packets
sent when an IP phone is powered on against the device’s OUI addresses. If a match is found, the
system automatically assigns the receiving port to the voice VLAN, issues ACL rules and configures
the packet precedence. You can configure voice VLAN aging time on the device. The system will
remove a port from the voice VLAN if no packet is received from the port during the aging time.
Assigning/removing ports to/from a voice VLAN are automatically performed by the system. The
automatic mode is suitable for scenarios where PCs and IP phones connected in series access the
network through the device and ports on the device transmit both voice traffic and data traffic at the
same time, as shown in Figure 31 . When the voice VLAN works normally, in case of a system reboot,
the system reassigns ports in automatic voice VLAN assignment mode to the voice VLAN after the
reboot, ensuring that existing voice connections can work normally. Port assignment to the voice
VLAN is not triggered by voice traffic streams.
Figure 31 PCs and IP phones connected in series access the network
• In manual mode, you need to manually assign an IP phone accessing port to a voice VLAN. Then,
the system matches the source MAC addresses carried in the packets against the device’s OUI
addresses. If a match is found, the system issues ACL rules and configures the packet precedence.
In this mode, assigning/removing ports to/from a voice VLAN are performed manually. The
manual mode is suitable for scenarios where only IP phones access the network through the device
and ports on the device only transmit voice traffic, as shown in
Figure 32 . In this mode, ports