Cisco Systems 3560 사용자 설명서

Use the no form of each command to return to the default state.

Within BGP, route maps can be used to control and to modify routing information and to define the 
conditions by which routes are redistributed between routing domains. See the 

 for more information about route maps. Each 

route map has a name that identifies the route map (map tag) and an optional sequence number.

Beginning in privileged EXEC mode, follow these steps to use a route map to disable next-hop 
processing:

Use the no route-map map-tag command to delete the route map. Use the no set ip next-hop ip-address 
command to re-enable next-hop processing.

You can filter BGP advertisements by using AS-path filters, such as the as-path access-list global 
configuration command and the neighbor filter-list router configuration command. You can also use 
access lists with the neighbor distribute-list router configuration command. Distribute-list filters are 
applied to network numbers. See the 

 for information about the distribute-list command.

You can use route maps on a per-neighbor basis to filter updates and to modify various attributes. A route 
map can be applied to either inbound or outbound updates. Only the routes that pass the route map are 
sent or accepted in updates. On both inbound and outbound updates, matching is supported based on AS 
path, community, and network numbers. Autonomous system path matching requires the match as-path 
access-list route-map command, community based matching requires the match community-list 
route-map command, and network-based matching requires the ip access-list global configuration 
command.

Enter global configuration mode.

route-map map-tag [[permit | deny] | 
sequence-number]]

Create a route map, and enter route-map configuration mode.

set ip next-hop ip-address [...ip-address] 
[peer-address]

(Optional) Set a route map to disable next-hop processing 

In an inbound route map, set the next hop of matching routes to 
be the neighbor peering address, overriding third-party next hops.

In an outbound route map of a BGP peer, set the next hop to the 
peering address of the local router, disabling the next-hop 
calculation.

end 

Return to privileged EXEC mode.

show route-map [map-name]

Display all route maps configured or only the one specified to verify 
configuration.

(Optional) Save your entries in the configuration file.