Configuring RIP FRR

As shown in Figure 14, Switch S, Switch A, and Switch D run RIPv2. Configure RIP FRR so that when Link A becomes unidirectional, services can be switched to Link B immediately.

1. Configure IP addresses and subnet masks for interfaces on the switches. (Details not shown.)

2. Configure RIPv2 on the switches to make sure Switch A, Switch D, and Switch S can communicate with each other at Layer 3. (Details not shown.)

3. Configure RIP FRR:

   # Configure Switch S.

   <SwitchS> system-view
   [SwitchS] bfd echo-source-ip 1.1.1.1
   [SwitchS] ip prefix-list abc index 10 permit 4.4.4.4 32
   [SwitchS] route-policy frr permit node 10
   [SwitchS-route-policy-frr-10] if-match ip address prefix-list abc
   [SwitchS-route-policy-frr-10] apply fast-reroute backup-interface vlan-interface 100 backup-nexthop 12.12.12.2
   [SwitchS-route-policy-frr-10] quit
   [SwitchS] rip 1
   [SwitchS-rip-1] fast-reroute route-policy frr
   [SwitchS-rip-1] quit
   

   # Configure Switch D.

   <SwitchD> system-view
   [SwitchD] bfd echo-source-ip 4.4.4.4
   [SwitchD] ip prefix-list abc index 10 permit 1.1.1.1 32
   [SwitchD] route-policy frr permit node 10
   [SwitchD-route-policy-frr-10] if-match ip address prefix-list abc
   [SwitchD-route-policy-frr-10] apply fast-reroute backup-interface vlan-interface 101 backup-nexthop 24.24.24.2
   [SwitchD-route-policy-frr-10] quit
   [SwitchD] rip 1
   [SwitchD-rip-1] fast-reroute route-policy frr
   [SwitchD-rip-1] quit
   

# Display route 4.4.4.4/32 on Switch S to view the backup next hop information.

[SwitchS] display ip routing-table 4.4.4.4 verbose

Summary Count : 1

Destination: 4.4.4.4/32
   Protocol: RIP             Process ID: 1
  SubProtID: 0x1                    Age: 04h20m37s
       Cost: 1               Preference: 100
        Tag: 0                    State: Active Adv
  OrigTblID: 0x0                OrigVrf: default-vrf
    TableID: 0x2                 OrigAs: 0
      NBRID: 0x26000002          LastAs: 0
     AttrID: 0xffffffff        Neighbor: 13.13.13.2
      Flags: 0x1008c        OrigNextHop: 13.13.13.2
      Label: NULL           RealNextHop: 13.13.13.2
    BkLabel: NULL             BkNextHop: 12.12.12.2
  Tunnel ID: Invalid          Interface: Vlan-interface200
BkTunnel ID: Invalid        BkInterface: Vlan-interface100

# Display route 1.1.1.1/32 on Switch D to view the backup next hop information.

[SwitchD] display ip routing-table 1.1.1.1 verbose

Summary Count : 1

Destination: 1.1.1.1/32
   Protocol: RIP             Process ID: 1
  SubProtID: 0x1                    Age: 04h20m37s
       Cost: 1               Preference: 100
        Tag: 0                    State: Active Adv
  OrigTblID: 0x0                OrigVrf: default-vrf
    TableID: 0x2                 OrigAs: 0
      NBRID: 0x26000002          LastAs: 0
     AttrID: 0xffffffff        Neighbor: 13.13.13.1
      Flags: 0x1008c        OrigNextHop: 13.13.13.1
      Label: NULL           RealNextHop: 13.13.13.1
    BkLabel: NULL             BkNextHop: 24.24.24.2
  Tunnel ID: Invalid          Interface: Vlan-interface200
BkTunnel ID: Invalid        BkInterface: Vlan-interface101