hostname CE1.AS1
!
interface Loopback0
 ip address 172.16.1.1 255.255.255.255
!
interface POS1/0
 ip address 10.1.1.2 255.255.255.252
 encapsulation ppp
!
router eigrp 1
 network 10.1.1.0 0.0.0.3
 network 172.16.1.0 0.0.0.255
 no auto-summary
!
ip route 172.16.1.0 255.255.255.0 Null0
!
!
hostname CE2.AS1
!
interface Loopback0
 ip address 172.16.2.1 255.255.255.255
!
interface POS1/0
 ip address 10.1.2.2 255.255.255.252
 encapsulation ppp
!
router eigrp 1
 network 10.1.2.0 0.0.0.3
 network 172.16.2.0 0.0.0.255
 no auto-summary
!
ip route 0.0.0.0 0.0.0.0 POS1/0
ip route 172.16.2.0 255.255.255.0 Null0
!
!
hostname CE1.AS2
!
interface Loopback0
 ip address 192.168.1.1 255.255.255.255
 !
!
interface POS1/0
 ip address 10.1.1.2 255.255.255.252
 encapsulation ppp
 !
!
router ospf 1
 router-id 10.1.1.2
 log-adjacency-changes
 redistribute static
 network 10.1.1.0 0.0.0.3 area 0
 network 192.168.1.0 0.0.0.255 area 0
!
ip route 1.1.1.2 255.255.255.255 POS1/0
ip route 192.168.1.0 255.255.255.0 Null0
!
!
hostname CE2.AS2
!
interface Loopback0
 ip address 192.168.2.1 255.255.255.255
 !
!
interface POS1/0
 ip address 10.1.2.2 255.255.255.252
 encapsulation ppp
 !
!
router bgp 2
 no synchronization
 bgp log-neighbor-changes
 network 192.168.2.0
 neighbor 10.1.2.1 remote-as 10
 no auto-summary
!
ip route 192.168.2.0 255.255.255.0 Null0