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Troubleshooting IP Routing Protocols by Abe Martey, Johnson Liu, Zaheer Aziz, Faraz Shamim

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Chapter 2. Understanding Routing Information Protocol (RIP)

This chapter covers the following key topics about Routing Information Protocol (RIP):

Metric

Timers

Split horizon

Split horizon with poison reverse

RIP-1 packet format

RIP behavior

Why RIP doesn’t support discontiguous networks

Why RIP doesn’t support variable-length subnet masking (VLSM)

Default routes and RIP

Protocol extension to RIP

Compatibility issues

RIP is a distance vector protocol that uses hop count as its metric. This protocol is very simple and was intended for small networks. RIP is similar to gated, which was distributed by the FreeBSD version of UNIX. Before the RFC for RIP Version 1 (RIP-1) was written, several versions of RIP were floating around. ...

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