! Listing 6.16: Router backup using dial-on-demand--data center router with Frame Relay and ISDN links
!
!Copyright (C) 2001 by Vincent C Jones. All Rights Reserved.


version 11.0
!
hostname DataCenter
!
username North password SharedSecret
! Names and passwords for other callers go here
!
interface Ethernet0
 description Data center LAN 
 ip address 10.1.255.254 255.255.0.0
!
interface Serial1
 description Frame relay to remote locations
 no ip address
 encapsulation frame-relay
!
interface Serial1.105 point-to-point
 description Primary link to South Router
 ip address 10.201.5.1 255.255.255.252
 frame-relay interface-dlci 105 broadcast
!
! Subinterfaces for other sites not shown...
!
interface BRI0
 description This is where backups dial in.
 ip address 10.2.255.254 255.255.0.0
 encapsulation ppp
 dialer idle-timeout 300
 dialer map ip 10.2.1.5 name North speed 56 broadcast
! Dialer maps for other dial ins go here
 dialer-group 1
 ppp authentication chap
!
router eigrp 1
 network 10.0.0.0
 no auto-summary
!
access-list 100 deny   eigrp any any
access-list 100 permit ip any any
dialer-list 1 protocol ip list 100
!
end