Cisco BGP

Please write more coments on configurations!!

router bgp 15393
 no synchronization
 bgp dampening
 neighbor customer-pg peer-group
 neighbor customer-pg route-map customer-rm in
 neighbor customer-pg route-map standardout out
 neighbor X.X.X.A peer-group customer-pg
 neighbor X.X.X.A remote-as 65502
 neighbor X.X.X.A filter-list 100 in
 neighbor X.X.X.A distribute-list 100 in
!
! as-path filter to catch peers announcements
no ip as-path access-list 100
ip as-path access-list 100 permit _(65502)$
! acl to catch adverts for peers address space
no access-list 100
access-list 100 permit ip 0.0.0.0 0.0.0.0 0.0.0.0 0.0.0.0

! acl to catch adverts for sub-aggregates of own address space

no access-list 199
access-list 199 permit ip X.X.X.0 0.0.31.255 255.255.240.0 0.0.15.255
! acl to catch adverts for own address space
no access-list 97
access-list 97 permit X.X.X.0 0.0.31.255

! acl to catch adverts for bogus address space
no access-list 98
access-list 98 permit 10.0.0.0 0.255.255.255
access-list 98 permit 172.16.0.0 0.15.255.255
access-list 98 permit 192.168.0.0 0.0.255.255
access-list 98 permit 0.0.0.0 0.255.255.255
access-list 98 permit 127.0.0.0 0.255.255.255
access-list 98 permit 128.0.0.0 0.0.255.255
access-list 98 permit 191.255.0.0 0.0.255.255
access-list 98 permit 192.0.0.0 0.0.0.255
access-list 98 permit 223.255.255.0 0.0.0.255
access-list 98 permit 224.0.0.0 15.255.255.255

! acl to catch adverts for default route
no access-list 99
access-list 99 permit 0.0.0.0 0.0.0.0
route-map customer-rm deny 10
 match ip address 97 98 99

route-map customer-rm permit 20
set local-preference 150

route-map standardout deny 10
 match ip address 98 99 199
route-map standardout permit 20