BGP - Understanding BGP Confederations

BGP Confederations essentially allow us to create sub-autonomous-systems within an autonomous system, thus creating a hierarchical structure to a large AS. Confederations are a method of overcoming the scalability problem that the iBGP full mesh peering requirement introduces into an AS. In this video, I will describe confederations, how they function, and how they can be used to overcome the limitations of scalability inherent to iBGP peerings. Chapter list: ============================================ 00:00 Introduction 00:22 iBGP Requires a Full-Mesh Peering 01:16 What is a BGP Confederation? 03:46 Are all iBGP Routers within a sub-AS? 05:52 Confederations and AS Numbers 07:15 Summary Other videos mentioned in this video... =============================================== Video: BGP - Why does iBGP require full mesh peering? - https://youtu.be/03Gl1YGeZYc Video: BGP - Why does BGP require an IGP to function? - https://youtu.be/SN_TDZ2eDAA Video: BGP - AS Path Attribute - https://youtu.be/Rw1Ps2JTtPc Other related links and videos: =============================================== Video: What is BGP? - https://youtu.be/fo9YxxKNO_g Video: eBGP vs iBGP - What's the difference? - https://youtu.be/3x7yztGSY-g Video: BGP - Understanding the iBGP Split Horizon Rule - https://youtu.be/lBWXBvyr6_Y BGP Official Definition RFC 4271 - https://datatracker.ietf.org/doc/html/rfc4271 BGP AS Confederations for BGP RFC 5065 - https://datatracker.ietf.org/doc/html/rfc5065 #BGP #iBGP #confederations #autonomoussystems #lazarusagapidis