Community out
router
bgp 100
neighbor
220.200.1.1 remote-as 200
neighbor 220.200.1.1 send-community
neighbor
220.200.1.1 route-map set-community out
!
route-map set-community permit 10
match
ip address prefix-list NO-ANNOUNCE
set community no-export
!
route-map
set-community permit 20
!
ip prefix-list NO-ANNOUNCE permit 172.168.0.0/16