February 1998
Intermediate to advanced
368 pages
10h 7m
English
Content preview from OSPF: Anatomy of an Internet Routing ProtocolBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 2. Internet Routing Protocols
In this chapter, we explore the Internet’s dynamic routing protocols. TCP/IP has many routing protocols, with OSPF, BGP, RIP, IGRP, and Integrated IS-IS all in use in today’s Internet. Before getting to the routing protocols themselves, we first discuss the database that all routing protocols produce: the router’s routing table. An examination of the Internet’s routing architecture introduces the concept of Autonomous Systems and Interior and Exterior Gateway Protocols (IGPs and EGPs). We end the chapter with a description of the two main routing technologies in use today: Distance Vector and link state.
Routing Tables
All TCP/IP routing protocols have ways of discovering the reachable IP address prefixes and, ...
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