This section describes how to configure RIP GR to avoid incorrect route calculation and packet loss after a FW on which RIP has been enabled restarts.
Before configuring RIP GR, complete the following tasks:
Configuring IP addresses for interfaces to ensure that neighboring nodes are reachable at the network layer
Establishing the RIP Neighbor Relationship, establish the neighbor relationship successfully
To avoid traffic interruption and route flapping caused by master/slave switchover, you can enable RIP graceful restart (GR). GR is a technology used to ensure normal traffic forwarding and non-stop forwarding of key services during the restart of routing protocols.
After a RIP process is restarted through GR, the Restarter and the Helper re-establish the neighbor relationship and update the routing table and forwarding table. This ensures non-stop traffic forwarding and stabilizes the network topology. During RIP GR, except the neighbor of the device where master/slave switchover occurs, other FWs do not detect the route change.
system-view
rip [ process-id ]
graceful-restart [ period period | wait-time time | planned-only time ] *
When most FWs on a network do not support RIP GR, setting wait-time time to a larger value is recommended. This ensures that the Restart FW has enough time to learn correct routes.