59PrerequisitesYou must specify a next hop by using the apply fast-reroute backup-interface command ina routing policy and reference the routing policy with RIP FRR. For more information about routingpolicy configuration, see the Routing Policy in the Layer 3 – IP Routing Configuration Guide.To do… Use the command… RemarksStep 1 Enter system view system-view —Step 2 Configure the sourceaddress of echopacketsbfd echo-source-ip ip-address RequiredNot configured by defaultStep 3 Enter RIP view rip [ process-id ] [ vpn-instance vpn-instance-name ] —Step 4 Enable RIP FRR andreference a routingpolicy to designate abackup next hopfast-reroute route-policy route-policy-nameRequiredDisabled by defaultConfiguring BFD for RIPFor more information about BFD, see BFD in the High Availability Configuration Guide.BFD for RIP provides the following two link detection modes:• Single-hop detection in BFD echo packet mode for a directly connected neighbor. In thismode, a BFD session is established only when the neighbor has route information to send.• Bidirectional detection in BFD control packet mode for an indirectly connected neighbor. Inthis mode, a BFD session is established only when both ends have routes to send and BFD isenabled on the receiving interface.Single-hop detection in BFD echo packet modeTo do… Use the command… RemarksStep 1 Enter system view system-view —Step 2 Configure the source IPaddress of BFD echopacketsbfd echo-source-ip ip-addressRequiredBy default, no source IP address isconfigured for BFD echo packets.
