Configuring fast detection timers
Restrictions and guidelines
Perform this task on the master node in the RRPP domain.
The Fast-Fail timer must be equal to or greater than three times the Fast-Hello timer.
When you configure the Fast-Hello timer, take the device capability into consideration. A small Fast-Hello timer value might cause the link to be unstable.
In a dual-homed-ring network, to avoid temporary loops when the primary ring fails, make sure the following requirements are met:
The Fast-Fail timer value on the master node of the subring is equal to or greater than six times the timer resolution.
The difference between the Fast-Fail timer values on the master node of the subring and the master node of the primary ring is greater than twice the Fast-Hello timer value on the master node of the subring.
Procedure
Enter system view.
system-view
Enter RRPP domain view.
rrpp domain domain-id
Set the Fast-Hello timer and Fast-Fail timer.
fast-timer hello-timer hello-value fail-timer fail-value
By default, the Fast-Hello timer is 20 milliseconds, and the Fast-Fail timer is 60 milliseconds.
Set the Fast-Edge-Hello timer and Fast-Edge-Fail timer.
fast-edge-timer hello-timer hello-value fail-timer fail-value
By default, the Fast-Edge-Hello timer is 10 milliseconds, and the Fast-Edge-Fail timer is 30 milliseconds.