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    Setting a BGP Community Attribute to a List of Community Numbers

    You can use the set community command to set the community attribute in BGP updates. You can specify a community list number in the range 1–4,294,967,295 or in the new community format of AA:NN, or you can specify one of the following well-known communities:

    • local-as—Prevents advertisement outside the local AS
    • no-advertise—Prevents advertisement to any peer
    • no-export—Prevents advertisement beyond the BGP confederation boundary

    Alternatively, you can use the list keyword to specify the name of a community list that you previously created with the ip community-list command. You can use this command with inbound, outbound, and redistribution route maps.

    You can use the none keyword to remove the community attribute from a route.

    To set the community attribute in BGP updates:

    • Issue the set community command in Route Map Configuration mode.
    host1(config-route-map)#set community no-advertise

    Use the no version to remove the set clause from a route map.

    Published: 2014-08-12