Example Ii - 3Com MSR 50 Series Configuration Manual

516 C 27: D
HAPTER YNAMIC

Example II

R B C
OUTE ACKUP ONFIGURATION
# Configure the dynamic routing protocol RIP.
[RouterC] rip
[RouterC-rip-1] network 10.0.0.0
[RouterC-rip-1] network 20.0.0.0
[RouterC-rip-1] network 30.0.0.0
[RouterC-rip-1] import-route direct
Network requirements
Router A and Router B are directly connected through a serial interface, and
■
they are both connected to the ISDN switched network through ISDN BRI
interfaces. Router A and Router B can dial each other. The telephone number
of Router B is 8810052.
The serial interfaces are in the network segment 10.0.0.0/8, and the BRI
■
interfaces are in the network segment 20.0.0.0/8.
As the master device of the dynamic route backup function, Router A monitors
■
the network segment 40.0.0.0/8, which is connected to Loopback1 interface
of Router B.
Network diagram
Figure 145 Network diagram for dynamic route backup configuration
Router A
S2 /0
10 .0.0.1/8
BRI3/0
20 .0 .0.1/8
Configuration procedure
1 Configure Router A
# Configure a dialer rule.
<RouterA> system-view
[RouterA] dialer-rule 1 ip permit
# Configure dialup parameters for BRI 3/0.
[RouterA] interface bri 3/0
[RouterA-Bri3/0] ip address 20.0.0.1 8
[RouterA-Bri3/0] dialer enable-circular
[RouterA-Bri3/0] dialer-group 1
[RouterA-Bri3/0] dialer route ip 40.0.0.1 8810052
[RouterA-Bri3/0] quit
# Configure Serial 2/0.
Router B
S 2/0
10 .0.0.2/8
BRI3/0
20.0 .0.2/8
ISDN
Loop 1
40.0.0.1/32