damping time
Function
The damping time command sets the VLAN damping time on a VLANIF interface, that is, the delay before reporting a VLAN Down event to the VLANIF interface.
The undo damping time command restores the default dumping time.
The default damping time on a VLANIF interface is 0 seconds. That is, the VLANIF interface is notified immediately after the VLAN becomes Down.
Usage Guidelines
Usage Scenario
Software upgrade or active/standby switchover on the wireless access controller may cause frequent status changes on VLANIF interfaces. To prevent network flapping, run the damping time command on VLANIF interfaces to configure the VLAN damping function.
When all interfaces in a VLAN become Down, the wireless access controller waits for a period specified by delay-time and then reports the VLAN Down event to the VLANIF interface.
Precautions
If any interface in the VLAN becomes Up within the delay time, the VLANIF interface remains Up.
You can use the display interface vlanif command to view the VLAN damping time.
If you run the damping time command multiple times in the same VLANIF interface view, only the latest configuration takes effect.
