Clare Gough is a Cisco Certified Internetworking Engineer(CCIE #2893) and was a Cisco Certified Systems Instructor for the ICRC, ACRC, CIT, CLSC, and CID courses. She holds a master's degree in education and a master's degree in information systems. Over the last 15 years, she has developed and taught a variety of networking and internetworking courses throughout the world for Digital Equipment Co. and various Cisco training partners. She moved from England in 1991 and now lives in San Francisco with her family | Cisco CCNP Routing Exam Certification Guide Clare Gough Cisco Systems Cisco Press Cisco Press 201 W 103rd Street Indianapolis IN 46290 iv Cisco CCNP Routing Exam Certification Guide Clare Gough Copyright 2001 Cisco Press 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 00-105173 ISBN 1-58720-001-5 Warning and Disclaimer This book is designed to provide information about Cisco routing. Every effort has been made to make this book as complete and as accurate as possible but no warranty or fitness is implied. The information is provided on an as is basis. The author Cisco Press and Cisco Systems Inc. shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information contained in this book or from the use of the discs or programs that may accompany it. The opinions expressed in this book belong to the author and are not necessarily those of Cisco Systems Inc. Trademark Acknowledgments All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Cisco Press or Cisco Systems Inc. cannot attest to the accuracy of this information. Use of a term in this book should not be regarded as affecting the validity of any trademark or service mark. Feedback Information At Cisco Press our goal is to create in-depth technical books of the highest quality and value. Each book is crafted with care and precision undergoing rigorous development that involves the .
