         - Cardiff router: 

Cardiff>en
Cardiff#show run
Cardiff#show running-config 
Building configuration...

Current configuration : 1721 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Cardiff
!
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
vpdn enable
vpdn-group 1
 accept-dialin
!
license udi pid CISCO2911/K9 sn FTX15249UJN-
!
!
!
!
!
!
!
!
!
no ip domain-lookup
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface Tunnel10
 ip address 192.168.10.1 255.255.255.248
 mtu 1476
!
!
interface GigabitEthernet0/0
 no ip address
 pppoe enable
 pppoe-client dial-pool-number 1
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 ip address 172.16.198.6 255.255.255.192
 ip nat outside
 duplex auto
 speed auto
!
interface GigabitEthernet0/2
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Serial0/2/0
 ip address 10.0.1.222 255.255.255.252
 encapsulation ppp
!
interface Serial0/2/1
 no ip address
 clock rate 2000000
 shutdown
!
interface FastEthernet0/3/0
 switchport mode access
!
interface FastEthernet0/3/1
 switchport mode access
!
interface FastEthernet0/3/2
 switchport mode access
!
interface FastEthernet0/3/3
 switchport mode access
!
interface Dialer1
 dialer pool 1
 ip address negotiated
 mtu 1492
 encapsulation ppp
!
interface Vlan1
 no ip address
 shutdown
!
router bgp 65002
 bgp log-neighbor-changes
 no synchronization
 neighbor 10.0.1.221 remote-as 65025
!
ip nat inside source list 1 interface GigabitEthernet0/1 overload
ip nat inside source static 172.16.198.6 255.255.255.252 
ip nat outside source static 172.16.198.6 255.255.255.252 
ip classless
!
ip flow-export version 9
!
!
access-list 1 permit 0.0.0.2 255.255.255.252
access-list 1 permit host 172.16.198.6
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end


Cardiff#



      - ISP router: 

ISP>en
ISP#show run
ISP#show running-config 
Building configuration...

Current configuration : 1260 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname ISP
!
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO2911/K9 sn FTX15245A50-
!
!
!
!
!
!
!
!
!
no ip domain-lookup
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface Loopback10
 ip address 209.165.201.253 255.255.255.0
!
interface Virtual-Template1
 no ip address
 ip unnumbered GigabitEthernet0/1
 encapsulation ppp
!
interface GigabitEthernet0/0
 no ip address
 pppoe enable group global
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface GigabitEthernet0/2
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Serial0/3/0
 ip address 10.0.1.221 255.255.255.252
 encapsulation ppp
 clock rate 2000000
!
interface Serial0/3/1
 ip address 10.0.1.225 255.255.255.252
 encapsulation ppp
 clock rate 2000000
!
interface Vlan1
 no ip address
 shutdown
!
router bgp 65025
 bgp log-neighbor-changes
 no synchronization
 neighbor 10.0.1.222 remote-as 65002
 neighbor 10.0.1.226 remote-as 65050
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line 0/2/0 0/2/7
 login
!
line vty 0 4
 login
!
!
!
end


ISP#

           - Swansea Router: 

Swansea>en
Swansea#show run
Swansea#show running-config 
Building configuration...

Current configuration : 1561 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Swansea
!
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO2911/K9 sn FTX1524UKI0-
!
!
!
!
!
!
!
!
!
no ip domain-lookup
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface Tunnel10
 ip address 192.168.10.5 255.255.255.248
 mtu 1476
!
!
interface GigabitEthernet0/0
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface GigabitEthernet0/1
 ip address 172.16.200.62 255.255.255.192
 ip nat outside
 duplex auto
 speed auto
!
interface GigabitEthernet0/2
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Serial0/2/0
 no ip address
 clock rate 2000000
 shutdown
!
interface Serial0/2/1
 ip address 10.0.1.226 255.255.255.252
 encapsulation ppp
!
interface FastEthernet0/3/0
 switchport mode access
!
interface FastEthernet0/3/1
 switchport mode access
!
interface FastEthernet0/3/2
 switchport mode access
!
interface FastEthernet0/3/3
 switchport mode access
!
interface Vlan1
 no ip address
 shutdown
!
router bgp 65050
 bgp log-neighbor-changes
 no synchronization
 neighbor 10.0.1.225 remote-as 65025
!
ip nat inside source list 1 interface GigabitEthernet0/1 overload
ip nat inside source static 172.16.200.62 255.255.255.252 
ip nat outside source static 172.16.200.62 255.255.255.252 
ip classless
!
ip flow-export version 9
!
!
access-list 1 permit 0.0.0.1 255.255.255.252
access-list 1 permit host 172.16.200.62
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end


Swansea#
