router bgp 65001
 timers bgp 3 9
 bgp router-id 1.1.1.1
 neighbor TWO_GROUP peer-group
 neighbor TWO_GROUP remote-as 65002
 neighbor TWO_GROUP update-source 1.1.1.1
 neighbor TWO_GROUP ebgp-multihop 3
 neighbor TWO_GROUP password hello1
 neighbor THREE_GROUP peer-group
 neighbor THREE_GROUP remote-as 65003
 neighbor THREE_GROUP update-source 1.1.1.1
 neighbor THREE_GROUP ebgp-multihop 3
 neighbor THREE_GROUP password hello2
 bgp listen range 2.2.2.0/24 peer-group TWO_GROUP 
 bgp listen range 3.3.3.0/24 peer-group THREE_GROUP 
 address-family ipv4 unicast
 neighbor TWO_GROUP maximum-prefix 4294967295
 neighbor THREE_GROUP maximum-prefix 4294967295