Voice Vlan Modes On A Port - H3C S5500-SI Series Operation Manual

Operation Manual – VLAN
H3C S5500-SI Series Ethernet Switches
Note:
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.

2.1.1 Voice VLAN Modes on a Port

There are two voice VLAN modes on a port: automatic and manual (the mode here
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 and
matches it against the OUI addresses. If a match is found, the system will
automatically add the port into the Voice VLAN and apply ACL rules and configure
the packet precedence. An aging time can be configured for the voice VLAN. The
system will remove a port from the voice VLAN if no voice packet is received from
it after the aging time. The adding and removing of ports are automatically realized
by the system.
In manual mode, administrators add the IP phone access port to the voice VLAN
manually. It then identifies the source MAC address contained in the packet,
matches it against the OUI addresses. If a match is found, the system issues ACL
rules and configures the precedence for the packets. In this mode, the operation of
adding ports to and removing ports from the voice VLAN are carried out by the
administrators.
Both modes forward tagged packets according to their tags.
The following table lists the co-relation between the port voice VLAN mode, the voice
traffic type of an IP phone, and the port link type.
Chapter 2 Voice VLAN Configuration
2-2