Configuring RIP GR

GR ensures forwarding continuity when a routing protocol restarts or an active/standby switchover occurs.

Two routers are required to complete a GR process. The following are router roles in a GR process:

After RIP restarts on a router, the router must learn RIP routes again and update its FIB table, which causes network disconnections and route reconvergence.

With the GR feature, the restarting router (known as the GR restarter) can notify the event to its GR capable neighbors. GR capable neighbors (known as GR helpers) maintain their adjacencies with the router within a GR interval. During this process, the FIB table of the router does not change. After the restart, the router contacts its neighbors to retrieve its FIB.

By default, a RIP-enabled device acts as the GR helper. Perform this task on the GR restarter.


[IMPORTANT: ]

IMPORTANT:

You cannot enable RIP NSR on a device that acts as GR restarter.


To configure GR on the GR restarter:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter RIP view.

rip [ process-id ]

N/A

3. Enable GR for RIP.

graceful-restart

By default, RIP GR is disabled.

4. (Optional.) Set the GR interval.

graceful-restart interval interval

By default, the GR interval is 60 seconds.