Bfd For Static Routes Configuration Example (Indirect Next Hop) - HP 5500 EI series Configuration Manual

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BFD for static routes configuration example (indirect next hop)

Network requirements
In
Figure
4, Router A has a route to interface Loopback 1 (2.2.2.9/32) on Router B, with the output
interface Ethernet 1/1. Router B has a route to interface Loopback 1 (1.1.1.9/32) on Router A, with the
output interface Ethernet 1/1. Router D has a route to 1.1.1.9/32, with the output interface Ethernet 1/1,
and a route to 2.2.2.9/32, with the output interface Ethernet 1/2.
Configure a static route to subnet 120.1.1.0/24 on Router A, and configure a static route to subnet
121.1.1.0/24 on Router B. Enable BFD for both routes. 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
121.1.1.0/24
Router A
Device
Router A
Router C
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 ethernet 1/2 10.1.1.100 preference 65
[RouterA] quit
# Configure static routes on Router B and enable BFD control mode for the static route that
traverses Router D.
<RouterB> system-view
Loop1
1.1.1.9/32
Router D
Eth1/1
Eth1/1
BFD
Eth1/1
Router C
Interface
IP address
Eth1/1
12.1.1.1/24
Eth1/2
10.1.1.102/24
Loop1
1.1.1.9/32
Eth1/1
10.1.1.100/24
Eth1/2
13.1.1.2/24
120.1.1.0/24
Loop1
2.2.2.9/32
Eth1/1
Eth1/2
Router B
Eth1/2
Device
Router B
Router D
16
Interface
IP address
Eth1/1
11.1.1.2/24
Eth1/2
13.1.1.2/24
Loop1
2.2.2.9/32
Eth1/1
12.1.1.2/24
Eth1/2
11.1.1.2/24

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