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Troubleshooting routing protocols

Learn about the features of balanced hybrid routing and EIGRP, the Cisco-proprietary routing protocol based on IGRP. Discover how to configure EIGRP and verify configuration. You'll also explore the process for troubleshooting routing protocols and be introduced to debugging commands.

This chapter discusses common EIGRP configuration tasks. The emphasis is on ways in which EIGRP establishes relationships with adjacent routers, calculates primary and backup routes, and responds to failures in known routes to a particular destination. A network is made up of many devices, protocols, and media that allow data communication to occur. When a network component does not work correctly, it can affect the entire network. In any case, network engineers must quickly identify and troubleshoot problems when they arise. Learn about the features of balanced hybrid routing and EIGRP – the Cisco-proprietary routing protocol based on IGRP. Discover how to configure EIGRP and verify configuration. You'll also explore the process for troubleshooting routing protocols and be introduced to debugging commands.

Read Chapter 3: EIGRP and Troubleshooting Routing Protocols in this PDF.

Excerpted from "Switching Basics and Intermediate Routing CCNA 3 Companion Guide" by Wayne Lewis (ISBN: 1587131706).

Copyright © 2006, Cisco Press. All rights reserved.

This was last published in July 2006

Dig Deeper on Network protocols and standards

Designing an optimal Layer 3 for Cisco network service architectures This chapter from 'Authorized Self-Study Guide: Designing Cisco Network Service Architectures, 2nd ed.' examines a select number of topics on both advanced IP addressing and select design issues with Border Gateway Protocol (BGP), Enhanced Interior Gateway Routing Protocol (EIGRP), and Open Shortest Path First (OSPF). Advanced IP addressing and routing protocol design encompasses a large amount of detail that has already filled a number of books on routing protocols and networking best practices. Learn how to design addressing solutions to support summarization, design routing solutions to support summarization, route filtering, and redistribution, and design scalable EIGRP, OSPF and BGP routing solutions for the enterprise.

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