S5#sh run | b router
router bgp 200
 no synchronization
 bgp router-id 5.5.5.5
 bgp log-neighbor-changes
 bgp inject-map new exist-map trigger copy-attributes
 network 50.0.0.0
 network 208.28.1.128 mask 255.255.255.224
 neighbor 208.28.1.66 remote-as 300
 neighbor 208.28.1.129 remote-as 100
 no auto-summary
!
!
ip prefix-list R1 seq 5 permit 208.28.1.66/32
!
ip prefix-list agg seq 5 permit 17.57.0.0/16
!
ip prefix-list new seq 5 permit 17.57.104.0/24
ip prefix-list new seq 10 permit 17.57.105.0/24
ip prefix-list new seq 15 permit 17.57.106.0/24
route-map trigger permit 10
 match ip address prefix-list agg
 match ip route-source prefix-list R1
!
route-map new permit 10
 set ip address prefix-list new
!