Voice Vlan Aging - H3C s3600 series Command Manual

# After the voice VLAN function of VLAN 2 is enabled, if you enable the voice VLAN function for other
VLANs, the system will prompt that your configuration fails.
[Sysname] voice vlan 4 enable
Can't change voice vlan configuration when other voice vlan is running

voice vlan aging

Syntax
voice vlan aging minutes
undo voice vlan aging
View
System view
Parameters
minutes: Sets the voice VLAN aging timer in minutes, in the range of 5 to 43200.
Description
Use the voice vlan aging command to set the voice VLAN aging timer.
Use the undo voice vlan aging command to restore the default.
By default, the voice VLAN aging timer is 1440 minutes.
If a port is configured to work in automatic voice VLAN assignment mode, the switch automatically
assigns the port to the voice VLAN when receiving a packet with the source MAC address matching an
entry in the OUI list of the switch. As soon as the port is assigned to the voice VLAN, the voice VLAN
aging timer starts. If no recognizable voice traffic has been received before the timer expires, the port is
removed from the voice VLAN.
The voice VLAN aging timer does not take effect on ports working in manual voice VLAN assignment
mode, because these ports are assigned to the voice VLAN statically.
When setting the voice VLAN aging timer, consider the usage frequency of IP phones. Note that:
A large voice VLAN aging timer setting can prevent a port from being assigned to or removed from
the voice VLAN frequently, keeping voice communication stable. However, this may cause a port to
stay in the voice VLAN even if it has not transmitted voice traffic for a long time, occupying system
resources and bringing about security problems. Therefore, you are recommended to set a large
voice VLAN aging timer in a network with credible network devices and many voice applications.
A small voice VLAN aging timer enables the switch to remove a port that has not transmitted voice
traffic from the voice VLAN timely, thus improving network security. However, this may cause the
port to be assigned to or removed from the voice VLAN frequently. Therefore, you are
recommended to set a small voice VLAN aging timer in a network with only a few voice
applications.
Related commands: display voice vlan status.
Examples
# Set the aging time of the voice VLAN to 100 minutes.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
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