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ISDN Backup With Dialer Watch

2019-11-04 20:39:38
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  ISDN Backup With Dialer Watch
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  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
  
  ! <<- Unused interface configuration omitted
  !
  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.


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