R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

has a smaller cost than that redistributed from Router C, so Router B uses the route through

GigabitEthernet 2/1/1.

• Enable BFD for RIP on GigabitEthernet 2/1/2 of Router A, and specify GigabitEthernet 2/1/1 of

Router B as the destination. When a unidirectional link occurs between Router A and Router B, BFD

can quickly detect the link failure and notify RIP. RIP then deletes the neighbor relationship and the

route information learned on GigabitEthernet 2/1/2. It does not receive or send any packets on

GigabitEthernet 2/1/2. When the route learned from Router A ages out, Router B uses the route

destined for 100.1.1.1/24 through GigabitEthernet 2/1/2.

Figure 12 Network diagram

Configuration procedure

1. Configure IP addresses for interfaces. (Details not shown.)

2. Configure basic RIP and enable BFD on the interfaces:

# Configure Router A.

<RouterA> system-view

[RouterA] rip 1

[RouterA-rip-1] network 192.168.2.0

[RouterA-rip-1] import-route static

[RouterA-rip-1] quit

[RouterA] interface gigabitethernet 2/1/2

[RouterA-GigabitEthernet2/1/2] rip bfd enable destination 192.168.2.2

[RouterA-GigabitEthernet2/1/2] quit

# Configure Router B.

<RouterB> system-view

[RouterB] rip 1

[RouterB-rip-1] network 192.168.2.0

[RouterB-rip-1] network 192.168.3.0

[RouterB-rip-1] quit

# Configure Router C.

<RouterC> system-view

[RouterC] rip 1

[RouterC-rip-1] network 192.168.3.0

[RouterC-rip-1] import-route static cost 3