! Listing 6.15: North router with ISDN backup link to data center
!
!Copyright (C) 2001 by Vincent C Jones. All Rights Reserved.


version 11.0
!
hostname North
! Router with ISDN backup link
username DataCenter password SharedSecret
!
interface Ethernet0
 ip address 10.101.5.2 255.255.255.0
!
interface BRI0
! Secondary backup line
 ip address 10.2.1.5 255.255.0.0
 encapsulation ppp
 bandwidth 56                                           [boldface line]
 delay 5000                                             [boldface line] 
 dialer map ip 10.2.255.254 name DataCenter speed 56 broadcast 18005551212 
 dialer-group 1
 ppp authentication chap
!
! Can use any routing protocol desired!
router eigrp 1
 redistribute static
 network 10.0.0.0
 distribute-list 11 out static
 no auto-summary
!
! Default route is via best path to data center LAN
ip route 0.0.0.0 0.0.0.0 10.1.255.254 150
! If no known route to data center LAN, use ISDN backup
ip route 10.1.0.0 255.255.0.0 10.2.255.254 155
access-list 11 permit 10.1.0.0 0.0.255.255
access-list 100 deny   eigrp any any
access-list 100 permit ip any any
!
dialer-list 1 protocol ip list 100
!
end