Routing TCP IP Volume II CCIE Professional Development

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Printed in the United States of America 2 3 4 5 6 7 8 9 0

Second Printing September 2001

Library of Congress Cataloging-in-Publication Number: 98-86516

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Credits

Publisher
John Wait
Editor-In-Chief
John Kane
Cisco Systems Management
Michael Hakkert
Tom Geitner
William Warren
Executive Editor
Brett Bartow
Acquisitions Editor
Amy Lewis
Managing Editor
Patrick Kanouse
Development Editor
Christopher Cleveland
Production Editor
Marc Fowler
Copy Editor
Keith Cline
Technical Editors
Pete Moyer, Henry Benjamin, Mike Penning
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Louisa Klucznik
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Tim Wright
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Gayle Johnson

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Copyright © 2000, Cisco Systems, Inc. All rights reserved. Access Registrar, AccessPath, Are You Ready, ATM Director, Browse with Me, CCDA, CCDE, CCDP, CCIE, CCNA, CCNP, CCSI, CD-PAC, CiscoLink, the Cisco NetWorks logo, the Cisco Powered Network logo, Cisco Systems Networking Academy, Fast Step, FireRunner, Follow Me Browsing, FormShare, GigaStack, IGX, Intelligence in the Optical Core, Internet Quotient, IP/VC, iQ Breakthrough, iQ Expertise, iQ FastTrack, iQuick Study, iQ Readiness Scorecard, The iQ Logo, Kernel Proxy, MGX, Natural Network Viewer, Network Registrar, the Networkers logo, Packet, PIX, Point and Click Internetworking, Policy Builder, RateMUX, ReyMaster, ReyView, ScriptShare, Secure Script, Shop with Me, SlideCast, SMARTnet, SVX, TrafficDirector, TransPath, VlanDirector, Voice LAN, Wavelength Router, Workgroup Director, and Workgroup Stack are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, Empowering the Internet Generation, are service marks of Cisco Systems, Inc.; and Aironet, ASIST, BPX, Catalyst, Cisco, the Cisco Certified Internetwork Expert Logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Collision Free, Enterprise/Solver, EtherChannel, EtherSwitch, FastHub, FastLink, FastPAD, IOS, IP/TV, IPX, LightStream, LightSwitch, MICA, NetRanger, Post-Routing, Pre-Routing, Registrar, StrataView Plus, Stratm, SwitchProbe, TeleRouter, are registered trademarks of Cisco Systems, Inc. or its affiliates in the U.S. and certain other countries.

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Dedications

Jeff Doyle: This book is dedicated to my wife, Sara, and my children, Anna, Carol, James, and Katherine. They are my refuge, and they keep me sane, humble, and happy.

Jennifer DeHaven Carroll: To my husband, Mike, and son, Mitchell, who continue to encourage me.