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    Setting a BGP Extended Community Attribute

    You can use the set extcommunity command to set the extended community attributes in a route map for BGP updates.

    You can use the rt keyword to specify a route target community, which consists of one or more routers that can receive a set of routes advertised by BGP that carry the extended community attribute.

    You can use the soo keyword to specify a site-of-origin community, which consists of one or more routers that inject into BGP a set of routes that carry the extended community attribute.

    You can specify both a route target community and a site-of-origin community at the same time in a set clause without them overwriting each other.

    To set the extended community attributes:

    • Issue the set extcommunity command in Route Map Configuration mode.
    host1(config-route-map)#set extcommunity rt 10.10.10.2:325

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

    Published: 2014-08-12