Installation manual

4-268
SIGNAMAX LLC • www.signamax.eu
• VoIP traffic can be detected on switch ports by using the source MAC address of
packets, or by using LLDP (IEEE 802.1AB) to discover connected VoIP devices.
When VoIP traffic is detected on a configured port, the switch automatically assigns
the port as a tagged member of the Voice VLAN.
• Only one Voice VLAN is supported and it must already be created on the switch
before it can be specified as the Voice VLAN.
• The Voice VLAN ID cannot be modified when the global auto-detection status is enabled
(see the switchport voice vlan command on page 4-270).
Example
The following example enables VoIP traffic detection and specifies the Voice VLAN ID as
1234.
voice vlan aging
This command sets the Voice VLAN ID time out. Use the no form to restore the default.
Syntax
voice vlan aging minutes
no voice vlan
minutes - Specifies the port Voice VLAN membership time out.
(Range: 5-43200 minutes)
Default Setting
1440 minutes
Command Mode
Global Configuration
Command Usage
The Voice VLAN aging time is the time after which a port is removed from the Voice
VLAN when VoIP traffic is no longer received on the port.
Example
The following example configures the Voice VLAN aging time as 3000 minutes.
Console(config)#voice vlan 1234
Console(config)#
Console(config)#voice vlan aging 3000
Console(config)#