Cisco Press 201 W 103rd Street Indianapolis, IN 46290 Cisco CCNA Exam #640-507 Certification Guide Wendell Odom, CCIE #1624 ii Cisco CCNA Exam #640-507 Certification Guide Wendell Odom Copyright© 2000 Lacidar Unlimited, Inc. Cisco Press logo is a trademark of Cisco Systems, Inc. Published by: Cisco Press 201 West 103rd Street Indianapolis, IN 46290 USA All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission from the publisher, except for the inclusion of brief quotations in a review. Printed in the United States of America 1 2 3 4 5 6 7 8 9 0 Library of Congress Cataloging-in-Publication Number: 99-67898 ISBN: 0-7357-0971-8 Warning and Disclaimer This book is designed to provide information about the Cisco CCNA #640-507 exam. 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We greatly appreciate your assistance. iii Publisher John Wait Executive Editor John Kane Cisco Systems Program Manager Jim LeValley Managing Editor Patrick Kanouse Development Editor Christopher Cleveland Senior Editor Jennifer Chisholm Copy Editor Krista Hansing Technical Editors David Barnes Tinjin Chang Steve Kalman Frank Knox Barbara Nolley Team Coordinator Amy Lewis Book Designer Gina Rexrode Cover Designer Louisa Klucznik Production Team Argosy Indexer Christopher Cleveland Copyright © 2000 Cisco Systems, Inc. All rights reserved. Printed in the USA. 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Parc Evolic, Batiment L1/L2 16 Avenue du Quebec Villebon, BP 706 91961 Courtaboeuf Cedex France http://www-europe.cisco.com Tel: 33 1 69 18 61 00 Fax: 33 1 69 28 83 26 American Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-7660 Fax: 408 527-0883 Asia Headquarters Nihon Cisco Systems K.K. Fuji Building, 9th Floor 3-2-3 Marunouchi Chiyoda-ku, Tokyo 100 Japan http://www.cisco.com Tel: 81 3 5219 6250 Fax: 81 3 5219 6001 iv About the Author Wendell Odom has worked with networking technology for 15 years. He is currently a Cisco Systems Senior Systems Engineer in the Atlanta, Georgia office, assigned to several large Cisco customers. Prior to joining Cisco in 1999, Wendell provided consulting services on large networks as well as training services. He spent his first eight years in networking working for IBM, helping customers evolve their SNA networks into multiprotocol networks. Wendell is CCIE #1624, is a Certified Cisco Systems Instructor, is Cisco CIPcertiified and is a CCNA-WAN. He has taught various Cisco-certified courses, including Introduction to Cisco Router Configuration (ICRC), Advanced Cisco Router Configuration (ACRC), Cisco SNA for Multiprottoco Administrators (SNAM), Cisco Channel Interface Processor (CIP), MPLS over Cisco WAN Switches, and Cisco ATM (CATM). Wendell is one of the first Cisco instructors certified without a probatioonar testing period and is the first non-Cisco instructor in the United States to teach Cisco’s SNAM, CIP, and DLSw courses. About the Technical Reviewers David Barnes is a Network Consulting Engineer for Cisco Systems in Dallas, Texas. He is a Cisco Certified Design Professional, MCSE+Internet, and Master CNE. David specializes in large-scale network design and optimization. He has designed, implemented, and managed networks for numerous Fortune 500 companies over the past 10 years. Tinjin Chang , CCIE #5137 and CCSI, is an instructor and consultant for Chesapeake Network Solutions, Inc. Tinjin has more than seven years of experience in planning, deploying, and troubleshooting complex and large-scale IP and multiprotocol networks. Prior to joining Chesapeake, he was the lead network engineee at Discover Brokerage, where his design and troubleshooting skills minimized downtime and guaranteee network availability. Discover Brokerage was named the Best Online Broker by Barron’s magazine for the two years that he worked there. Steve Kalman is a data communications trainer. He is the author or tech editor of 12 CBT titles and has been the author, tech editor, or trainer for eight instructor-led courses. Steve also is beginning a new distanncelearning project as both author and presenter. In addition to those responsibilities, he runs a consulting company, Esquire Micro Consultants, that specializes in data network design. Frank Knox , CCIE #3698, is a consultant and instructor currently involved in design, implementation, and customer training for mixed SNA-IP networks. He is considered to be an expert in the area of mainframe attached routers. Frank has more than 33 years of networking experience with IBM, GTE, and Skyline Compuute Corp.; during that time, he has worked in field service and support, product planning, education, and management. In addition, he has developed and taught several courses for the University of Dallas (Telecommuniccation MBA program). Frank has a master’s degree in telecommunications from Pace University. Barb Nolley is the president and principal consultant for BJ Consulting, Inc., a small consulting firm that specializes in networking education. Since starting BJ Consulting, Barb has developed and taught training courses for Novell’s Master CNE certification, as well as several courses for Cisco System’s Engineering Education group. Barb stays current on networking technologies by constantly reading published books and perusing more than 50 industry publications each month. Prior to starting her own company in 1993, Barb worked for Apple Computer, Tandem Computer, and Tymnet (now part of MCI), where she held positions in everything from technical support to project management. v Dedication My wife, Kris, was a great help to me during this latest writing project. While she took no direct role in the book, everything I do in life is a lot better because the love of my life is with me! Thanks to my parents, Raymond and Fay, who took care of many things during some health problems I had while writing the book. And finally, but most importantly, thanks to Jesus Christ, especially for your joy, peace, and protection in the midst of a tough year. vi Acknowledgments Chris Cleveland, development editor for Cisco Press, is the best in the business! Chris made my job much easier so that I could concentrate totally on the content. I’d probably refuse to write another book if Chris wouldn’t be the development editor! John Kane, executive editor for Cisco Press, provided a great deal of assistance, as usual. John’s frequent e-mails and conference calls with Cisco’s Worldwide Training organization allowed him to gather the informattio needed to guide Cisco Press’s Cisco certification books, and it also allowed me to focus on writing, instead of sending e-mails and participating in conference calls! Thanks for everything, John. Many people at Cisco Press have helped make this book a success. Amy Lewis helped greatly by taking care of many details. Many others worked behind the scenes, and although I never met them, they are appreciatted Cisco Press spends much more time producing the book than I do to simply write it—they have the laborious tasks! Thanks to all on the team! The technical editors deserve most, if not all, of the credit for making the content robust and complete. There is no question that the book is immensely better after the edit process! While all the editors gave a great deal of help, each brought some parti