CISCO IOS in a Nutshell

Name

neighbor filter-list — router, BGP

Synopsis

neighbor {address | peer-group} filter-list access-list {in | out}
no neighbor {address | peer-group} filter-list access-list {in | out} 

Configures

A filter for BGP

Default

None

Description

This command sets up an AS path access list that filters BGP routes sent to or received from a specific neighbor. Routes that match the access list are discarded.

address or peer-group

The address or peer group of the neighbor.

filter-list access-list

The name of an AS path access list defined by the ip as-path access-list command.

in

The filter applies to incoming routes.

out

The filter applies to outgoing routes.