3Com MSR 50 Series Configuration Manual page 517

Dynamic Route Backup Configuration Example 517
[RouterA] interface serial 2/0
[RouterA-Serial2/0] ip address 10.0.0.1 8
[RouterA-Serial2/0] quit
# Configure the dynamic routing protocol OSPF.
[RouterA] ospf
[RouterA-ospf-1] area 0
[RouterA-ospf-1-area-0.0.0.0] network 10.0.0.0 0.255.255.255
[RouterA-ospf-1-area-0.0.0.0] network 20.0.0.0 0.255.255.255
[RouterA-ospf-1-area-0.0.0.0] import-route direct
[RouterA-ospf-1-area-0.0.0.0] quit
[RouterA-ospf-1] quit
# Create a dynamic route backup group.
[RouterA] standby routing-rule 1 ip 40.0.0.1 32
# Configure to make the priority of routes on dialup interfaces lower than that of
serial interfaces.
[RouterA] interface bri3/0
[RouterA-Bri3/0] ospf cost 2000
[RouterA-Bri3/0] ospf network-type broadcast
# Enable the dynamic route backup function.
[RouterA-Bri3/0] standby routing-group 1
2 Configure Router B
# Configure a dialer rule.
<RouterB> system-view
[RouterB] dialer-rule 1 ip permit
# Configure dialup parameters for BRI 3/0.
[RouterB] interface bri 3/0
[RouterB-Bri3/0] ip address 20.0.0.2 8
[RouterB-Bri3/0] dialer enable-circular
[RouterB-Bri3/0] dialer-group 1
[RouterB-Bri3/0] quit
# Configure Serial 2/0.
[RouterB] interface serial 2/0
[RouterB-Serial2/0] ip address 10.0.0.2 8
[RouterB-Serial2/0] quit
# Configure the interface loopback 1.
[RouterB] interface loopback 1
[RouterB-Loopback1] ip address 40.0.0.1 32
[RouterB-Loopback1] quit
# Configure the dynamic routing protocol OSPF.