krimson (Cisco 2500 Router)
krimson#show running-config
Building configuration...
Current configuration : 5055 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname krimson
!
logging buffered 500000 debugging
no logging console
enable password
!
username kevin password 0
ip subnet-zero
no ip domain-lookup
!
isdn switch-type basic-net3
!
interface Ethernet0
ip address 10.200.16.30 255.255.255.0
no ip route-cache
no ip mroute-cache
no cdp enable
!
!
interface Serial1
!--- Primary Link (Frame Relay)
bandwidth 64
no ip address
encapsulation frame-relay
no ip route-cache
no ip mroute-cache
!
interface Serial1.1 point-to-point
!--- Point-to-point Frame Relay subinterface
ip address 10.5.5.2 255.255.255.0
no ip route-cache
frame-relay interface-dlci 20
!
interface BRI0
!--- Backup physical interface
description Backup ISDN, Nr. 4420038
no ip address
encapsulation ppp
no ip route-cache
no ip mroute-cache
load-interval 30
no keepalive
dialer pool-member 1
!--- BRI 0 is a member of dialer pool 1
isdn switch-type basic-net3
no fair-queue
no cdp enable
ppp authentication chap
!
interface Dialer0
!--- Logical interface for the backup
ip address 10.9.9.1 255.255.255.0
!--- The dialer is in the same network as the remote dialer interface
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer pool 1
!--- Dialer pool 1. BRI 0 is a member of this pool
dialer remote-name kevin
!--- Authenticated remote name of the peer.
!--- Verify that this name exactly matches the authenticated name
!--- of the remote dialer
dialer string 6120
!--- Number for outbound call. For inbound calls this is not needed
dialer watch-group 1
!--- Enable dialer watch on this backup interface.
!--- Watch the route specified with dialer watch-list 1
dialer-group 1
!--- Apply interesting traffic defined in dialer-list 1
no cdp enable
ppp authentication chap
!
!
router ospf 10
log-adjacency-changes
network 10.5.5.0 0.0.0.255 area 0
network 10.7.7.0 0.0.0.255 area 0
network 10.9.9.0 0.0.0.255 area 0
!
no ip classless
ip route 0.0.0.0 0.0.0.0 10.200.16.1
!--- Default route through ethernet 0
no ip http server
!
access-list 101 deny ospf any any
!--- Mark OSPF as uninteresting.
!--- This will prevent OSPF hellos from keeping the link up
access-list 101 permit ip any any
!--- All other IP traffic is interesting
dialer watch-list 1 ip 10.8.8.0 255.255.255.0
!--- This defines the route(s) to be watched.
!--- This exact route(including subnet mask) must exist in the routing table.
!--- Use the dialer watch-group 1 command to apply this list to the backup
!--- interface (interface dialer 0)
dialer-list 1 protocol ip list 101
!--- Interesting traffic is defined by access-list 101.
!--- This is applied to BRI0 using dialer-group 1
!
line con 0
exec-timeout 0 0
privilege level 15
line aux 0
transport input all
line vty 0 4
exec-timeout 0 0
password
login
!
end
kevin(2500)
kevin#show running-config
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
!
hostname kevin
!
username krimson password 0
!
isdn switch-type basic-net3
!
!
interface Loopback0
ip address 10.8.8.1 255.255.255.0
!--- This is the network the remote side is watching
ip ospf network point-to-point
!
interface Loopback1
ip address 172.19.0.1 255.255.255.255
!
interface Ethernet0
ip address 10.200.17.26 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
!
interface Serial0.1 point-to-point
!--- Primary link (Frame Relay sub-interface)
ip address 10.5.5.1 255.255.255.0
frame-relay interface-dlci 20
!
interface BRI0
!--- Physical interface
no ip address
encapsulation ppp
dialer pool-member 1
!--- Member of dialer pool 1
isdn switch-type basic-net3
no cdp enable
ppp authentication chap
!
interface Dialer0
!--- Logical interface for incoming call
ip address 10.9.9.2 255.255.255.0
!--- The dialer is in the same network as the remote dialer interface
encapsulation ppp
dialer pool 1
!--- Dialer pool 1. BRI 0 is a member of this pool
dialer remote-name krimson
!--- Authenticated remote name of the peer.
!--- Verify that this name exactly matches the authenticated name
!--- of the remote dialer.
dialer-group 1
!--- Apply interesting traffic defined in dialer-list 1
no cdp enable
ppp authentication chap
!
router ospf 10
log-adjacency-changes
network 10.5.5.0 0.0.0.255 area 0
network 10.8.8.0 0.0.0.255 area 0
!--- Advertise the network the remote router is watching
network 10.9.9.0 0.0.0.255 area 0
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.200.17.1
no ip http server
!
dialer-list 1 protocol ip permit
!--- Interesting traffic definition. All IP traffic is interesting.
!--- This is applied to BRI0 using dialer-group 1.
!--- Since the remote router activates and deactivates the backup, this router
!--- does not need to restrict interesting traffic
no cdp run
!
line con 0
exec-timeout 0 0
line aux 0
modem InOut
line vty 0 4
exec-timeout 0 0
password
login
!
end
Note: The configuration of maui-nas-05 does not include any backup-related commands. For maui-nas-05, the backup link is just another dialin client.