R2#sh run | b router
router bgp 65002
 no synchronization
 bgp log-neighbor-changes
 bgp confederation identifier 100
 bgp confederation peers 65003 65004
 bgp bestpath med missing-as-worst
 network 20.0.0.0
 network 180.40.7.0 mask 255.255.255.224
 neighbor 180.40.7.3 remote-as 65003
 neighbor 180.40.7.66 remote-as 300
 neighbor 180.40.7.66 route-map Prob3a in
 neighbor 180.40.7.130 remote-as 300
 neighbor 180.40.7.130 route-map Prob3b in
 neighbor 208.28.1.130 remote-as 200
 neighbor 208.28.1.130 route-map Prob2 in
 no auto-summary
!
no ip http server
no ip http secure-server
ip classless
!
ip as-path access-list 1 permit ^200$
!

R2#
RACK98AS>3
[Resuming connection 3 to r3 ... ]

R3#sh run | b router
router bgp 65003
 no synchronization
 bgp log-neighbor-changes
 bgp confederation identifier 100
 bgp confederation peers 65002 65004
 bgp bestpath med missing-as-worst
 network 30.0.0.0
 neighbor 17.80.1.2 remote-as 65004
 neighbor 17.80.1.2 next-hop-self
 neighbor 180.40.7.2 remote-as 65002
 neighbor 180.40.7.2 next-hop-self
 neighbor 208.28.1.1 remote-as 300
 neighbor 208.28.1.1 prefix-list Prob8 out
 no auto-summary
!
no ip http server
no ip http secure-server
ip classless
!
!
!
ip prefix-list Prob8 seq 5 deny 17.80.0.0/16 ge 21
ip prefix-list Prob8 seq 10 permit 0.0.0.0/0 le 32

R3#
RACK98AS>3
[Resuming connection 3 to r3 ... ]

R3#
RACK98AS>4
[Resuming connection 4 to r4 ... ]

R4#sh run | b router
router bgp 65004
 no synchronization
 bgp log-neighbor-changes
 bgp confederation identifier 100
 bgp confederation peers 65002 65003
 network 17.80.1.0 mask 255.255.255.0
 network 40.0.0.0
 aggregate-address 17.80.0.0 255.255.240.0
 neighbor 17.80.1.1 remote-as 65003
 no auto-summary
!
no ip http server
ip classless
!
!