11Figure 1 Network diagramAs shown in Figure 1, upon a link failure, FRR designates a backup next hop by using a routing policy forroutes matching the specified criteria. Packets are directed to the backup next hop to avoid trafficinterruption.Configuration prerequisitesConfiguring static route FRR needs to reference a routing policy. You can specify a backup next hop ina routing policy by using the apply fast-reroute backup-interface command. For more information aboutthe command and routing policy configurations, see the chapter “Routing policy configuration.”Configuration procedureFollow these steps to configure static route FRR:To do… Use the command… RemarksEnter system view system-view —Configure the source address ofecho packets bfd echo-source-ip ip-address RequiredNot configured by default.Configure static route FRRip route-static [ vpn-instancevpn-instance-name ] fast-rerouteroute-policy route-policy-nameRequiredNot configured by default.NOTE:• Static route FRR takes effect only for static routes that have both the outbound interface and next hopspecified.• Do not use FRR and BFD at the same time.Displaying and maintaining static routesTo do… Use the command… RemarksDisplay information of static routesdisplay ip routing-table protocol static [ inactive |verbose ] [ | { begin | exclude | include }regular-expression ]Available in anyviewDelete all the static routes delete [ vpn-instance vpn-instance-name ]static-routes allAvailable insystem viewNOTE:For more information about the display ip routing-table protocol static [ inactive | verbose ] [ | { begin| exclude | include }regular-expression ] command, seeLayer 3—IP Routing Command Reference.
