408
2. Configure RIPng on the switches to make sure Switch A, Switch B, and Switch C can
communicate with each other at Layer 3. (Details not shown.)
3. Configure RIPng FRR:
# Configure Switch A.
<SwitchA> system-view
[SwitchA] ipv6 prefix-list abc index 10 permit 20:: 128
[SwitchA] route-policy frr permit node 10
[SwitchA-route-policy-frr-10] if-match ipv6 address prefix-list abc
[SwitchA-route-policy-frr-10] apply ipv6 fast-reroute backup-interface
vlan-interface 100 backup-nexthop 1::2
[SwitchA-route-policy-frr-10] quit
[SwitchA] ripng 1
[SwitchA-ripng-1] fast-reroute route-policy frr
[SwitchA-ripng-1] quit
# Configure Switch B.
<SwitchB> system-view
[SwitchB] ipv6 prefix-list abc index 10 permit 10:: 128
[SwitchB] route-policy frr permit node 10
[SwitchB-route-policy-frr-10] if-match ipv6 address prefix-list abc
[SwitchB-route-policy-frr-10] apply ipv6 fast-reroute backup-interface
vlan-interface 101 backup-nexthop 3::2
[SwitchB-route-policy-frr-10] quit
[SwitchB] ripng 1
[SwitchB-ripng-1] fast-reroute route-policy frr
[SwitchB-ripng-1] quit
Verifying the configuration
# Display the route 20::1/128 on Switch A to view the backup next hop information.
[SwitchA] display ipv6 routing-table 20::1 128 verbose
Summary count : 1
Destination: 20::1/128
Protocol: RIPng
Process ID: 1
SubProtID: 0x0 Age: 00h17m42s
Cost: 1 Preference: 100
IpPre: N/A QosLocalID: N/A
Tag: 0 State: Inactive Adv
OrigTblID: 0x0 OrigVrf: default-vrf
TableID: 0xa OrigAs: 0
NibID: 0x22000003 LastAs: 0
AttrID: 0xffffffff Neighbor: FE80::34CD:9FF:FE2F:D02
Flags: 0x41 OrigNextHop: FE80::34CD:9FF:FE2F:D02
Label: NULL RealNextHop: FE80::34CD:9FF:FE2F:D02
BkLabel: NULL BkNextHop: FE80::7685:45FF:FEAD:102
Tunnel ID: Invalid Interface: Vlan-interface200
BkTunnel ID: Invalid BkInterface: Vlan-interface100
FtnIndex: 0x0 TrafficIndex: N/A
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