4000 Router Series Layer 2 - WAN Configuration Guide

135

[RouterB-ospf-1] import-route direct

Dynamic route backup with B-DDR configuration example

Network requirements

As shown in Figure 50, Router A and Router B are directly connected through their serial interfaces. They

are also connected to the same ISDN switched network through their ISDN BRI interfaces, allowing them

to call each other. The telephone number of Router B is 8810052.

Enable dynamic route backup on Router A to monitor network segment 30.0.0.0/8, which is connected

to Router B.

Figure 50 Network diagram

Configuration procedure

1. Configure Router A:

# Create dialer access group 1 and configure a dial access rule for it. Create a local user account

userb for Router B, and configure PPP authentication for the account.

<RouterA> system-view

[RouterA] dialer-group 1 rule ip permit

[RouterA] local-user userb class network

[RouterA-luser-network-userb] password simple userb

[RouterA-luser-network-userb] service-type ppp

[RouterA-luser-network-userb] quit

# Create a dynamic route backup group.

[RouterA] standby routing-group 1 rule ip 30.0.0.1 32

# Configure B-DDR on interface Dialer 0.

[RouterA] interface dialer 0

[RouterA-Dialer0] link-protocol ppp

[RouterA-Dialer0] ip address 20.0.0.1 24

[RouterA-Dialer0] dialer bundle enable

[RouterA-Dialer0] dialer peer-name userb

[RouterA-Dialer0] dialer-group 1

[RouterA-Dialer0] dialer number 8810052

[RouterA-Dialer0] ppp authentication-mode pap

[RouterA-Dialer0] ppp pap local-user usera password simple usera

[RouterA-Dialer0] standby routing-group 1

[RouterA-Dialer0] quit