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Figure 6 Network diagram for RIP FRR
In Figure 6, configure FRR on Router B by using a routing policy to specify a backup next hop. When the
primary link fails, RIP directs packets to the backup next hop. At the same time, RIP calculates the shortest
path based on the new network topology, and forwards packets over that path after network
convergence.
Configuration restrictions and guidelines
• RIP FRR takes effect only for RIP routes learned from directly connected neighbors.
• Do not use RIP FRR and BFD for RIP at the same time. Otherwise, FRR might fail to work.
• RIP FRR is available only when the state of primary link (with Layer 3 interfaces staying up) changes
from bidirectional to unidirectional or when the primary link fails.
Configuration prerequisites
You must specify a next hop by using the apply fast-reroute backup-interface command in a routing
policy and reference the routing policy for FRR. For more information about routing policy configuration,
see "Configuring routing policies."
Configuration procedure
To configure RIP FRR:
Ste
Remarks
1. Enter system view.
system-view N/A
2. Configure the source address
of echo packets.
bfd echo-source-ip ip-address
By default, the source address of
echo packets is not configured.
3. Enter RIP view.
rip [ process-id ] [ vpn-instance
vpn-instance-name ]
N/A
4. Configure RIP FRR.
fast-reroute route-policy
route-policy-name
By default, RIP FRR is disabled.
Displaying and maintaining RIP
Execute display commands in any view and execute reset commands in user view.
Task Command
Display RIP current status and configuration
information.
display rip [ process-id ]
Display all active routes in RIP database. display rip process-id database
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