! Listing 4.2: Calling router using backup interface commands
!
!Copyright (C) 2001 by Vincent C Jones. All Rights Reserved.


version 11.0
!
hostname NewYork
!
username Chicago password Secret1
ip subnet-zero
isdn switch-type basic-ni1
!
interface Ethernet0
 ip address 10.100.0.1 255.255.0.0
!
interface Serial0
 ip address 10.0.0.1 255.255.255.252
 backup interface BRI0
!
interface BRI0
 ip address 10.0.0.5 255.255.255.252
 encapsulation ppp
 isdn spid1 21255512120101
 isdn spid2 21255512340101
 dialer map ip 10.0.0.6 name Chicago speed 56 broadcast 13125551212
 dialer-group 1
 ppp authentication chap
!
router ospf 1
 network 10.0.0.0 0.0.0.7 area 10
 network 10.100.0.0 0.0.255.255 area 10
!
ip classless
!
dialer-list 1 protocol ip permit
!
end