1-5Examples# Create VLAN 2, and enable the voice VLAN function on it. system-viewSystem View: return to User View with Ctrl+Z.[Sysname] vlan 2[Sysname-vlan2] quit[Sysname] voice vlan 2 enable# After the voice VLAN function of VLAN 2 is enabled, if you enable the voice VLAN function for otherVLANs, the system will prompt that your configuration fails.[Sysname] voice vlan 4 enableCan't change voice vlan configuration when other voice vlan is runningvoice vlan agingSyntaxvoice vlan aging minutesundo voice vlan agingViewSystem viewParametersminutes: Sets the voice VLAN aging timer in minutes, in the range of 5 to 43200.DescriptionUse 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 automaticallyassigns the port to the voice VLAN when receiving a packet with the source MAC address matching anentry in the OUI list of the switch. As soon as the port is assigned to the voice VLAN, the voice VLANaging timer starts. If no recognizable voice traffic has been received before the timer expires, the port isremoved from the voice VLAN.The voice VLAN aging timer does not take effect on ports working in manual voice VLAN assignmentmode, 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:z A large voice VLAN aging timer setting can prevent a port from being assigned to or removed fromthe voice VLAN frequently, keeping voice communication stable. However, this may cause a port tostay in the voice VLAN even if it has not transmitted voice traffic for a long time, occupying systemresources and bringing about security problems. Therefore, you are recommended to set a largevoice VLAN aging timer in a network with credible network devices and many voice applications.z A small voice VLAN aging timer enables the switch to remove a port that has not transmitted voicetraffic from the voice VLAN timely, thus improving network security. However, this may cause theport to be assigned to or removed from the voice VLAN frequently. Therefore, you are
