Suppression timers can prevent routing loops and reduce the possibility of generating incorrect routing information due to the receiving of incorrect routes.
When hop count of a route increases, a device starts suppression timers and accepts the Update packet of this route and updates the routing table until the suppression timers expire.
Suppression timers delays the addition of incorrect routes to the routing table and slows down route convergence on the entire network as well. Therefore, exercise caution when configuring the suppression timers.
The system view is displayed.
A RIP process is created, and the RIP view is displayed.
The suppression timers are set.
The configuration is committed.
RIP has four timers: update, age, suppress, and garbage-collect. The value of update is less than that of age, and the value of suppress is less than that of garbage-collect. Setting improper values for the timers affects RIP convergence speed and even causes route flapping on the network. For example, if the value of update is greater than that of age, a device cannot inform its neighbors of the change of RIP routes immediately.
For the configurations of update, age, suppress, and garbage-collect, see Configuring RIP Timers.