Well create a 172.16.0.021 summary to include all more-specific routes while not leaving any overlap.Īs we can see here, the aggregate was injected without affecting any of the more-specific routes. We can implement aggregation at R3 to optimize the BGP table on R4. Status codes: s suppressed, d damped, h history, valid, best, i - internal. Inspecting the BGP table on R4, we can see four routes each from AS 10 and 20. These routes are advertised to R3, which in turn advertises them to R4. In this article well look at all of the aggregation configuration parameters and how each can be used to influence the advertisement of an aggregate route. Unfortunately, this flexibility leads to difficulty remembering all the different tweaks which can be used to manipulate aggregate routes. We also share information about your use of our site with our social media, advertising and analytics partners.Īlso, these networks are directly connected to R3. This website use cookies to make your browsing experience better. Internal BGP (iBGP) is currently not supported in Packet Tracer (see screenshot below).Ĭisco, Cisco Systems, Cisco IOS, CCNA, CCNP, Networking Academy, Linksys are registered trademarks of Cisco Systems, Inc.
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