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Troubleshooting IP Routing Protocols
book

Troubleshooting IP Routing Protocols

by Faraz Shamim, Zaheer Aziz, Johnson Liu, Abe Martey
May 2002
Intermediate to advanced
912 pages
22h 26m
English
Cisco Press
Content preview from Troubleshooting IP Routing Protocols

Chapter 4. Understanding Interior Gateway Routing Protocol (IGRP)

This chapter covers the following key topics about Interior Gateway Routing Protocol (IGRP):

Metrics

Timers

Split horizon

Split horizon with poison reverse

IGRP packet format

IGRP behavior

Default route and IGRP

Unequal-cost load balancing in IGRP

In the mid-1980s, Cisco developed its own proprietary routing protocol, Interior Gateway Routing Protocol (IGRP), as a solution to some of the shortcomings of RIP, such as the hop-count limitation of 15.

Like RIP, IGRP is a distance vector protocol. However, IGRP calculates its composite metric from a variety of variables, such as bandwidth and delay, and hop count is not considered in the routing decision. IGRP uses variables ...

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Publisher Resources

ISBN: 1587050196Purchase book