Internet Routing Architectures, Second Edition

Chapter 4. Interdomain Routing Basics

This chapter covers the following key topics:

• Overview of routers and routing— Provides a brief consideration of basic routing and interior gateway protocols (IGPs) as a point of contrast for the next chapter's more in-depth deliberation of exterior gateway protocols.

• Routing protocol concepts— This section provides an overview of the distance vector and link-state distributed routing algorithms.

• Segregating the world into autonomous systems— An autonomous system is a set of routers that shares the same routing policies. Various configurations for autonomous systems are possible, depending on how many exit points to outside networks are desired and whether the system should permit transit traffic. ...