Figure 72: Isdn Backup Topology - Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual

See Figure 72 on page 879 for the topology used for this example.

Figure 72: ISDN Backup Topology

172.16.10.2
Configure dialer interface
t1-4/0/1:
Configuration on the
Primary Serial Interface
Configuration on the
Dialer Interface
Configuration on the
Physical ISDN Interface
ISDN network
br-6/0/0
Serial network
1
192.168.10.2
dl0
[edit interfaces]
t1-4/0/1 {
encapsulation ppp;
unit 0 {
backup-options {
interface dl0.0;
}
family inet {
address 192.168.10.2/30;
}
}
}
[edit interfaces]
dl0 {
encapsulation ppp;
unit 0 {
dialer-options {
pool 10;
dial-string 5552222;
activation-delay 10;
deactivation-delay 10;
incoming-map
caller 5552222 accept-all
}
family inet {
address 172.16.10.2/32 {
destination 172.16.10.1;
}
}
}
}
[edit interfaces]
br-6/0/0 {
Chapter 60: Configuring ISDN Interfaces
172.16.10.1
2
192.168.10.1
as the backup interface on the primary serial interface
Configuring ISDN Logical Interface Properties
879