Part II: Routing Protocol Basics
Although this book is primarily concerned with exterior gateway protocols—routing between different autonomous systems—it makes sense to look at internal gateway protocols as a first step because, conceptually and in practice, the two will affect each other's behavior. Thus, Chapter 4 begins with a consideration of protocols intended for routing within an autonomous system before moving into exterior gateway protocols. Chapter 4 concludes with an overview of the particular exterior gateway protocol, Border Gateway Protocol (BGP), which we will focus on. Chapter 5 provides an overview of how BGP Version 4 (BGP-4) operates and how and what it negotiates with neighboring routers. In addition, Chapter 5 covers ...
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