Configuring RIPng FRR
Network requirements
As shown in Figure 26, Switch A, Switch B, and Switch C run RIPng. Configure RIPng FRR so that when Link A becomes unidirectional, traffic can be switched to Link B immediately.
Figure 26: Network diagram
Device | Interface | IP address |
|---|---|---|
Switch A | VLAN-interface 100 | 1::1/64 |
Switch A | VLAN-interface 200 | 2::1/64 |
Switch A | Loopback 0 | 10::1/128 |
Switch B | VLAN-interface 101 | 3::1/64 |
Switch B | VLAN-interface 200 | 2::2/64 |
Switch B | Loopback 0 | 20::1/128 |
Switch C | VLAN-interface 100 | 1::2/64 |
Switch C | VLAN-interface 101 | 3::2/64 |
Configuration procedure
Configure IPv6 addresses for interfaces on the switches. (Details not shown.)
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.)
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
Connector: N/A
# Display the route 10::1/128 on Switch B to view the backup next hop information.
[SwitchB] display ipv6 routing-table 10::1 128 verbose
Summary count : 1
Destination: 10::1/128
Protocol: RIPng
Process ID: 1
SubProtID: 0x0 Age: 00h22m34s
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: 0x22000001 LastAs: 0
AttrID: 0xffffffff Neighbor: FE80::34CC:E8FF:FE5B:C02
Flags: 0x41 OrigNextHop: FE80::34CC:E8FF:FE5B:C02
Label: NULL RealNextHop: FE80::34CC:E8FF:FE5B:C02
BkLabel: NULL BkNextHop: FE80::7685:45FF:FEAD:102
Tunnel ID: Invalid Interface: Vlan-interface200
BkTunnel ID: Invalid BkInterface: Vlan-interface101
FtnIndex: 0x0 TrafficIndex: N/A
Connector: N/A