Sams Teach Yourself Cisco Routers in 21 Days is an in-depth, straightforward tutorial. It covers configuring a router from the ground up, alerts the reader to the most common problems, and offers tested solutions when they are applicable. Readers will learn how to: install the IOS; perform the initial configuration; configure the router for protocols such as TCP/IP, IPX, RIP, and IGRP, avoid common pitfalls working with routers.