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IPv4 Routing Protocol Concepts

Chapter Description

This chapter from CCNA Data Center DCICN 640-911 Official Cert Guide introduces the concepts behind Interior Gateway Protocols (IGPs), typically used inside one company. In particular, this chapter discusses the theory behind types of routing protocols, including distance vector and link-state logic. The chapter also introduces the Routing Information Protocol (RIP), Enhanced Interior Gateway Routing Protocol (EIGRP), and Open Shortest Path First (OSPF) routing protocol.

Definitions of Key Terms

After your first reading of the chapter, try to define these key terms, but do not be concerned about getting them all correct at that time. Chapter 23, “Final Review,” directs you in how to use these terms for late-stage preparation for the exam.

  • convergence, distance vector, Interior Gateway Protocol (IGP), partial update, poisoned route, split horizon, feasible successor, successor, shortest path first (SPF) algorithm, link state, link-state advertisement (LSA), link-state database (LSDB)