H3C Technologies H3C S7500E Series Switches - Manual (Page 33)

2-8
BFD for Static Routes Configuration Example
Network requirements
As shown in Figure 2-2 :
z Configure a static route to subnet 120.1.1.0/24 on Switch A and configure a static route to subnet
121.1.1.0/24 on Switch B. Both routes have BFD enabled.
z When the link over which Switch A communicates with Switch B through the Layer 2 switch fails,
BFD can detect the failure immediately. Then Switch A and Switch B communicate through Switch
C.
Figure 2-2 Network diagram for configuring BFD for static routes
Device Interface IP address Device Interface IP address
Switch A Vlan-int10 12.1.1.1/24 Switch B Vlan-int11 12.1.1.2/24
Vlan-int11 10.1.1.102/24 Vlan-int13 13.1.1.1/24
Switch C Vlan-int11 10.1.1.100/24
Vlan-int13 13.1.1.2/24
Configuration procedure
Configure IP addresses of the interfaces (omitted).
Configure BFD
# Configure static routes on Switch A and enable BFD control packet mode for the static route through
the Layer 2 switch.
system-view
[SwitchA] interface vlan-interface12
[SwitchA-vlan-interface12] bfd min-transmit-interval 500
[SwitchA-vlan-interface12] bfd min-receive-interval 500
[SwitchA-vlan-interface12] bfd detect-multiplier 9
[SwitchA-vlan-interface12] quit
[SwitchA] ip route-static 120.1.1.0 24 vlan-interface 10 12.1.1.2 bfd control-packet
[SwitchA] ip route-static 120.1.1.0 24 vlan-interface 11 10.1.1.100 preference 65
[SwitchA] quit
# Configure static routes on Switch B and enable BFD control packet mode for the static route through
the Layer 2 switch.
system-view
[SwitchB] interface vlan-interface12
[SwitchB-vlan-interface12] bfd min-transmit-interval 500
[SwitchB-vlan-interface12] bfd min-receive-interval 500
[SwitchB-vlan-interface12] bfd detect-multiplier 9
[SwitchB-vlan-interface12]] quit
[SwitchB] ip route-static 121.1.1.0 24 vlan-interface 10 12.1.1.1 bfd control-packet