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Aggregate-address address-mask suppress-map map-name This advertises the prefix and the more specific routes but it suppresses advertisement according to a route-map. 255 Then we apply the route-map to the aggregate statement. ) when aggregates are sent out. The following route map when applied to the aggregate attribute-map command will set the origin of the aggregates to IGP. 0 and suppress all the more specific routes. e. 0. 0. Solution 1: The first solution is to use a static route and redistribute it into BGP.

The default value for local preference is 100. Unlike the weight attribute which is only relevant to the local router, local preference is an attribute that is exchanged among routers in the same AS. Local preference is set via the “bgp default local-preference ” command or with route-maps as will be demonstrated in the following example: The bgp default local-preference command will set the local preference on the updates out of the router going to peers in the same AS. 0 from two different sides of the organization.

Please note that you can not aggregate an address if you do not have a more specific route of that address in the BGP routing table. 0 in its BGP table. 0). 0 only and NOT the more specific route then we would have to use the following: aggregate-address address mask summary-only This will a advertise the prefix only; all the more specific routes are suppressed. 0. 0 on RTB) then the network entry is always injected into BGP updates even though we are using the “aggregate summary-only” command.

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