R3#sh run | b router
router bgp 100
 no synchronization
 bgp log-neighbor-changes
 bgp bestpath med missing-as-worst
 network 30.0.0.0
 neighbor AS100IBGP peer-group
 neighbor AS100IBGP remote-as 100
 neighbor AS100IBGP route-reflector-client
 neighbor 17.80.1.2 peer-group AS100IBGP
 neighbor 180.40.7.2 peer-group AS100IBGP
 neighbor 208.28.1.1 remote-as 300
 neighbor 208.28.1.1 prefix-list Prob8 out
 no auto-summary

!
ip prefix-list Prob8 seq 5 deny 17.80.1.0/24 le 32
ip prefix-list Prob8 seq 10 permit 0.0.0.0/0 le 32
!