As you can see from Topology, the NBMA routers are all running iBGP, while our outlying router are running eBGP - It just got real! Now I know what you are thinking, "What if the physical interface connected to the Remote BGP peer goes down? What then smart guy? Just lose the Adjacency of that … Continue reading eBGP: Creating Neighbors using loopback interfaces, configuration examples, and explanation of BGP behaviors / concepts when it comes to loopbacks!
So my initial thought was to make R2 the iBGP Peer to R1 in AS 100, however I may want to use R4 also running on 15.x code to get into the mix here as we progess, so on R3 it goes! And a quick tidbit of knowledge to start things off: You cannot make … Continue reading BGP RID manual configuration, iBGP Peering with R3, a much briefer “show” command for verification, and important BGP behavior info for exam day!