[RouterA-Bri2/4/0] ospf network-type broadcast
# Enable dynamic route backup on BRI 2/4/0.
[RouterA-Bri2/4/0] standby routing-group 1
2.
Configure Router B:
# Create dialer group 1 and configure a dial rule for it.
<RouterB> system-view
[RouterB] dialer-group 1 rule ip permit
# Configure an IP address for interface BRI 2/4/0.
[RouterB] interface bri 2/4/0
[RouterB-Bri2/4/0] ip address 20.0.0.2 8
# Enable traditional DDR on the interface.
[RouterB-Bri2/4/0] dialer circular enable
# Associate the interface with dialer group 1.
[RouterB-Bri2/4/0] dialer-group 1
[RouterB-Bri2/4/0] quit
# Configure an IP address for Serial 2/1/0.
[RouterB] interface serial 2/1/0
[RouterB-Serial2/1/0] ip address 10.0.0.2 8
# Enable PPP encapsulation on the interface.
[RouterB-Serial2/1/0] link-protocol ppp
[RouterB-Serial2/1/0] quit
# Configure an IP address for interface Loopback 1.
[RouterB] interface loopback 1
[RouterB-Loopback1] ip address 40.0.0.1 32
[RouterB-Loopback1] quit
# Configure OSPF.
[RouterB] ospf
[RouterB-ospf-1] area 0
[RouterB-ospf-1-area-0.0.0.0] network 10.0.0.0 0.255.255.255
[RouterB-ospf-1-area-0.0.0.0] network 20.0.0.0 0.255.255.255
[RouterB-ospf-1-area-0.0.0.0] network 40.0.0.0 0.0.0.0
[RouterB-ospf-1-area-0.0.0.0] quit
[RouterB-ospf-1] import-route direct
Dynamic route backup for bundle DDR configuration
example
Network requirements
As shown in
They are also connected to the ISDN through their ISDN BRI interfaces. The telephone number of
Router B is 8810010. The telephone number of Router B is 8810052.
Enable dynamic route backup on Router A to monitor network segment 30.0.0.0/8 connected to
Router B.
Figure
67, Router A and Router B are directly connected through their serial interfaces.
214
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