R1(config-router)#do sh run 
Building configuration...

Current configuration : 1199 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!
!
!

!
interface Loopback0
 ip address 1.1.1.1 255.255.255.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial1/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/2
 ip address 13.0.0.1 255.255.255.252
 serial restart-delay 0
!
interface Serial1/3
 ip address 61.0.0.2 255.255.255.252
 serial restart-delay 0
!
router eigrp 1
 redistribute bgp 4000 metric 1544 20000 255 1 1500
 network 61.0.0.2 0.0.0.0
 auto-summary
!
router ospf 1
 log-adjacency-changes
 network 13.0.0.1 0.0.0.0 area 0
!
router bgp 4000
 no synchronization
 bgp log-neighbor-changes
 network 1.1.1.0 mask 255.255.255.0
 redistribute eigrp 1
 neighbor 13.0.0.2 remote-as 4000
 neighbor 13.0.0.2 next-hop-self
 no auto-summary
!
ip http server
!
!
!
control-plane
!

!
line con 0
line aux 0
line vty 0 4
 login
!
!
end








R2#sh run
Building configuration...

Current configuration : 1186 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!
!

!
interface Loopback0
 ip address 2.2.2.2 255.255.255.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial1/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/2
 ip address 24.0.0.1 255.255.255.252
 serial restart-delay 0
 clock rate 64000
!
interface Serial1/3
 ip address 32.0.0.2 255.255.255.252
 serial restart-delay 0
!
router ospf 1
 log-adjacency-changes
 network 32.0.0.2 0.0.0.0 area 0
!
router bgp 5000
 no synchronization
 bgp log-neighbor-changes
 bgp confederation identifier 2000
 bgp confederation peers 4000 
 network 2.2.2.0 mask 255.255.255.0
 neighbor 24.0.0.2 remote-as 3000
 neighbor 32.0.0.1 remote-as 4000
 neighbor 32.0.0.1 next-hop-self
 no auto-summary
!
ip http server
!

!
control-plane
!

!
line con 0
line aux 0
line vty 0 4
 login
!
!
end




R3#sh run 
Building configuration...

Current configuration : 1331 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!

!
interface Loopback0
 ip address 3.3.3.3 255.255.255.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial1/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/1
 ip address 35.0.0.1 255.255.255.252
 serial restart-delay 0
!
interface Serial1/2
 ip address 13.0.0.2 255.255.255.252
 serial restart-delay 0
!
interface Serial1/3
 ip address 32.0.0.1 255.255.255.252
 serial restart-delay 0
!
router ospf 1
 log-adjacency-changes
 network 13.0.0.2 0.0.0.0 area 0
 network 32.0.0.1 0.0.0.0 area 0
 network 35.0.0.1 0.0.0.0 area 0
!
router bgp 4000
 no synchronization
 bgp log-neighbor-changes
 bgp confederation identifier 2000
 bgp confederation peers 5000 
 network 3.3.3.0 mask 255.255.255.0
 neighbor 13.0.0.1 remote-as 4000
 neighbor 13.0.0.1 route-reflector-client
 neighbor 32.0.0.2 remote-as 5000
 neighbor 35.0.0.2 remote-as 4000
 neighbor 35.0.0.2 route-reflector-client
 no auto-summary
!
ip http server

!
control-plane
!
!
!
!
line con 0
line aux 0
line vty 0 4
 login
!
!
end




R4#sh run 
Building configuration...

Current configuration : 959 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R4
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!

!
interface Loopback0
 ip address 4.4.4.4 255.255.255.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial1/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/1
 ip address 24.0.0.2 255.255.255.252
 serial restart-delay 0
!
interface Serial1/2
 no ip address
 serial restart-delay 0
 clock rate 64000
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
router bgp 3000
 no synchronization
 bgp log-neighbor-changes
 network 4.4.4.0 mask 255.255.255.0
 neighbor 24.0.0.1 remote-as 2000
 no auto-summary
!
ip http server
!

!
control-plane

!
line con 0
line aux 0
line vty 0 4
 login    
!
!
end




R5#sh run 
Building configuration...

Current configuration : 1058 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R5
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!

!
interface Loopback0
 ip address 5.5.5.5 255.255.255.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial1/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/1
 ip address 35.0.0.2 255.255.255.252
 serial restart-delay 0
!
interface Serial1/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 1
 log-adjacency-changes
 network 35.0.0.2 0.0.0.0 area 0
!
router bgp 4000
 no synchronization
 bgp log-neighbor-changes
 bgp confederation identifier 2000
 network 5.5.5.0 mask 255.255.255.0
 neighbor 35.0.0.1 remote-as 4000
 no auto-summary
!
ip http server
!

!
control-plane
!
         
!
line con 0
line aux 0
line vty 0 4
 login
!
!
end





R6#sh run
Building configuration...

Current configuration : 904 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R6
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!

!
!
interface Loopback0
 ip address 6.6.6.6 255.255.255.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial1/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/3
 ip address 61.0.0.1 255.255.255.252
 serial restart-delay 0
 clock rate 620307
!
router eigrp 1
 network 6.6.6.6 0.0.0.0
 network 61.0.0.1 0.0.0.0
 no auto-summary
!
ip http server
!

!
control-plane
!

!
line con 0
line aux 0
line vty 0 4
 login
!         
!
end