Chapter 2

EIGRP

This chapter covers the following topics:

  • EIGRP Fundamentals: This section explains how EIGRP establishes a neighborship with other routers and how routes are exchanged with other routers.

  • EIGRP Configuration Modes: This section defines the two methods of configuring EIGRP with a baseline configuration.

  • Path Metric Calculation: This section explains how EIGRP calculates the path metric to identify the best and alternate loop-free paths.

Enhanced Interior Gateway Routing Protocol (EIGRP) is an enhanced distance vector routing protocol commonly found in enterprise networks. EIGRP is a derivative of Interior Gateway Routing Protocol (IGRP) but includes support for variable-length subnet masking (VLSM) and metrics capable of supporting ...

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