Cisco BGP-4 Command and Configuration Handbook

Form 2: permit/deny

If a match is made, deny the route and exit the route map.

access-list 1 permit ip-address/mask

or

ip as-path access-list number permit regular-expression

or

ip prefix-list name permit prefix/length

or

ip community-list number permit community-number route-map name deny sequence-number match ip address access-list-number

or

match as-path access-list-number

or

match ip address prefix-list list-name

or

match community community-list-number