3Com MSR 50 Series Configuration Manual page 514

514 C 27: D
HAPTER YNAMIC
R B C
OUTE ACKUP ONFIGURATION
Network diagram
Figure 144 Network diagram for dynamic route backup configuration
X.25
S2/0
10.0 .0.1/8
BRI3 /0
20.0.0.1 /8
Router A
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 30.0.0.1 8810052
[RouterA-Bri3/0] quit
# Configure Serial 2/0 and enable X.25 on it.
[RouterA] interface serial 2/0
[RouterA-Serial2/0] link-protocol x25 dte ietf
[RouterA-Serial2/0] x25 x121-address 10
[RouterA-Serial2/0] x25 map ip 10.0.0.2 x121-address 15 broadcast
[RouterA-Serial2/0] ip address 10.0.0.1 8
[RouterA-Serial2/0] quit
# Configure the dynamic routing protocol RIP.
[RouterA] rip
[RouterA-rip-1] network 10.0.0.0
[RouterA-rip-1] network 20.0.0.0
[RouterA-rip-1] import-route direct
[RouterA-rip-1] quit
# Create a dynamic route backup group.
[RouterA] standby routing-rule 1 ip 30.0.0.1 32
# Configure to make the priority of routes on dialup interfaces lower than that of
serial interfaces.
Router B
S2/0 S2/1
ISDN
X.25
S2 /1
10 .0.0.2/8
BRI3/0
Loop 1
20.0.0.2/8
30.0.0 .0/8
Router C