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Network Routing, 2nd Edition by Karthik Ramasamy, Deep Medhi

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Chapter 9

BGP

All truths are easy to understand once they are discovered; the point is to discover them.

Galileo Galilei

Abstract

The Border Gateway Protocol (BGP) is an inter-domain routing protocol. It plays a critical role in making communication on the Internet work. It facilitates exchange of information about networks, defined by IP prefixes, between autonomous systems (ASes) so that one part of the Internet knows how to reach another part. In this chapter, we present a comprehensive view on BGP by covering topics such as its protocol messages, attributes, and the policy framework.

Keywords

BGP messages; AS confederation; BGP timers; eBGP and iBGP; BGP path attribute; BGP decision process and policy; route flap damping; BGP ...

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