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

• Configure a static route to subnet 120.1.1.0/24 and a static route to subnet 121.1.1.0/24 on both

Router C and Router D.

When the link between Router A and Router B through Router D fails, BFD can detect the failure

immediately and inform Router A and Router B to communicate through Router C.

Figure 4 Network diagram

Table 5 Interface and IP address assignment

Device Interface

address

Router A GigabitEthernet 2/1/1 12.1.1.1/24

Router A GigabitEthernet 2/1/2 10.1.1.102/24

Router A Loopback 1 1.1.1.9/32

Router B GigabitEthernet 2/1/1 11.1.1.2/24

Router B GigabitEthernet 2/1/2 13.1.1.2/24

Router B Loopback 1 2.2.2.9/32

Router C GigabitEthernet 2/1/1 10.1.1.100/24

Router C GigabitEthernet 2/1/2 13.1.1.2/24

Router D GigabitEthernet 2/1/1 12.1.1.2/24

Router D GigabitEthernet 2/1/2 11.1.1.2/24

Configuration procedure

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

2. Configure static routes and BFD:

# Configure static routes on Router A and enable BFD control mode for the static route that

traverses Router D.

<RouterA> system-view

[RouterA] bfd multi-hop min-transmit-interval 500

[RouterA] bfd multi-hop min-receive-interval 500

[RouterA] bfd multi-hop detect-multiplier 9

[RouterA] ip route-static 120.1.1.0 24 2.2.2.9 bfd control-packet bfd-source 1.1.1.9

[RouterA] ip route-static 120.1.1.0 24 gigabitethernet 2/1/2 10.1.1.100 preference

[RouterA] quit