CCNP Enterprise Core (350-401) Cisco Routing

BGP Distribute List Filtering

Distribute List filtering allows filtering of network prefixes on BGP using access control lists on a neighbour specific basis.

The distribution list can be activated on a neighbour with the command neighbour x.x.x.x distribute-list y followed by in for inbound filtering or out for outbound filtering

ip access-list extended restrict-routes
 ! Allows - with any prefix length
 permit ip host
! Applying distribute list 'restrict-routes' inbound from
neighbour distribute-list restrict-routes in

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