To pass the INTRO exam, you need to know some basic information about several IP routing protocols. For the ICND exam, you will need to know distance vector concepts, as well as how to configure two distance vector IP routing protocols—the Routing Information Protocol (RIP) and the Interior Gateway Routing Protocol (IGRP). You will also need to know the concepts behind Enhanced IGRP (EIGRP), as well as Open Shortest Path First (OSPF)—two other IP routing protocols.
This chapter provides overview of routing protocols and the underlying logic used by these protocols.
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