22.4.9 Configuring the Link-Up Detection Timer

If the wait time before a link-up is detected after the detection of a link fault is short, depending on the remote device, the network might be unstable. You can avoid this problem by setting a link-up detection timer.

Points to note

Make sure that you set as small a link-up detection timer value as possible without risking the network becoming unstable. If the network is stable even when a link-up detection timer is not set, you do not need to set one.

Command examples

1. (config)# interface gigabitethernet 1/0/10

   Switches to the Ethernet interface 1/0/10 configuration mode.

2. (config-if)# link up-debounce time 5000

   Sets the link-up detection timer value to 5000 milliseconds.

Notes

The larger the value you set for the link-up detection timer, the more time it takes until communication is restored after a link fault has been corrected. If you want this time to be short, do not set a link-up detection timer.