Campus network design fundamentals PDF
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Campus Network Design Fundamentals Diane Teare Catherine Paquet Cisco Press 800 East 96th Street Indianapolis, IN 46240 USA ii Campus Network Design Fundamentals Diane Teare Catherine Paquet Copyright©2006 Cisco Systems, Inc. Published by: Cisco Press 800 East 96th Street Indianapolis, IN 46240 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 First Printing December 2005 Library of Congress Cataloging-in-Publication Number: 2004114307 ISBN: 1-58705-222-9 Warning and Disclaimer This book is designed to provide information about designing campus networks. Every effort has been made to make this book as com- plete and as accurate as possible, but no warranty or fitness is implied. The information is provided on an “as is” basis. The authors, 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 authors and are not necessarily those of Cisco Systems, Inc. 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 preci- sion, undergoing rigorous development that involves the unique expertise of members from the professional technical community. Readers’ feedback is a natural continuation of this process. If you have any comments regarding how we could improve the quality of this book, or otherwise alter it to better suit your needs, you can contact us through e-mail at feedback@ ciscopress.com. Please make sure to include the book title and ISBN in your message. We greatly appreciate your assistance. Corporate and Government Sales Cisco Press offers excellent discounts on this book when ordered in quantity for bulk purchases or special sales. For more information please contact: U.S. Corporate and Government Sales 1-800-382-3419 corpsales@ pearsontechgroup.com For sales outside the U.S. please contact: International Sales [email protected] iii 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. Publisher: John Wait Editor-in-Chief: John Kane Executive Editor: Brett Bartow Cisco Representative: Anthony Wolfenden Cisco Press Program Manager: Jeff Brady Production Manager: Patrick Kanouse Development Editor: Andrew Cupp Senior Project Editor: San Dee Phillips Editorial Assistant: Raina Han Copy Editor: John Edwards Technical Editors: Shawn Boyd, Keith Hutton, Amir Ranjbar Book and Cover Designer: Louisa Adair Composition Tolman Creek Design Indexer: Tim Wright iv About the Authors Catherine Paquet is a network architect in the field of internetworking and security. Catherine has in-depth knowledge of security systems, remote access, and routing technology. She is a CCSP, a CCNP, and a certified Cisco Systems instructor. Her internetworking career started as a LAN manager, moving to MAN manager, and eventually became a nationwide WAN manager. Catherine teaches network security courses with one of the largest Cisco Learning Partners and has been a guest speaker with the Computer Security Institute (CSI). In 2002 and 2003, Catherine volunteered with the UN mission in Kabul, Afghanistan, to train Afghan public servants in the area of networking. Catherine has a master’s degree in business administration with a major in management information systems (MBA MIS). She coauthored the Cisco Press books Building Scalable Cisco Networks; CCNP Self-Study: Building Scalable Cisco Internetworks (BCSI) (first and second editions); and The Business Case for Network Security: Advocacy, Governance, and ROI; she edited Building Cisco Remote Access Networks. Diane Teare is a consultant in the networking, training, and e-learning fields. Diane has more than 20 years of experience in design, implementation, and troubleshooting of network hardware and software, and has also been involved in teaching, course design, and project management. She has extensive knowledge of network design and routing technologies and is an instructor with one of the largest authorized Cisco Learning Partners. She was recently the director of e-learning for the same company, where she was responsible for planning and supporting all the company’s e-learning offerings in Canada, including Cisco courses. Diane has a bachelor’s degree in applied science in electrical engineering (BASc) and a master’s degree in applied science in management science (MASc). Diane is a certified Cisco Systems instructor and currently holds her CCNP and Cisco Certified Design Professional (CCDP) certifications. She edited Designing Cisco Networks and CCDA Self-Study: Designing for Cisco Internetwork Solutions (DESGN), and she coauthored Building Scalable Cisco Networks and CCNP Self-Study: Building Scalable Cisco Internetworks (BSCI) (first and second editions), all from Cisco Press. v About the Technical Reviewers Shawn Boyd is a senior network consultant for ARP Technologies Inc. Shawn has worldwide experience consulting on many different projects such as security/VoIP for Cisco Systems Israel, intrusion prevention for Top Layer Networks of Boston, and DSL infrastructure rollout for Telus Canada. Shawn is also active in course development and is a certified Cisco Systems instructor with ARP Technologies Inc., responsible for teaching most of the Cisco curriculum. His background is in network security and design at a service provider level. He has worked for Canada’s largest telco providers, performing network designs and implementations, and was lead contact on many large government contracts. Keith Hutton is a senior network consultant at Bell Canada, where he is responsible for the design of client service solutions. Prior to joining Bell, he held the position of senior Cisco network administrator at Magma Communications Ltd. Keith has also worked as a certified Cisco Systems instructor with Global Knowledge Canada. He is the coauthor of the Cisco Press book CCDP Self- Study: Designing Cisco Network Architectures (ARCH). Keith currently holds the certified Cisco Systems instructor, CCNP, and CCDP certifications. Amir Ranjbar, CCIE No. 8669, works as a consultant and trainer in the field of information technology in his own corporation, AMIRACAN Inc. AMIRACAN’s major client is Global Knowledge Network, where Amir worked as a full-time instructor until October 2005. Amir obtained his Master of Science degree in 1991 from the University of Guelph (Ontario, Canada). He also is a certified Cisco Systems instructor. After spending a few years in the field of computer programming, Amir joined Digital Equipment Corporation’s Learning Services to do training on Microsoft’s operating systems and back office products. Since 1998, Amir has switched his focus to Cisco Systems products and has been training many professionals from service provider and telecommunications companies on routing protocols, LAN switching, remote access, troubleshooting, MPLS VPNs, MPLS traffic engineering, voice over IP, and other subjects. Amir authored CCNP Self-Study: CCNP CIT Exam Certification Guide, Second Edition, and coauthored CCDP Self-Study: Designing Cisco Network Architectures (ARCH) for Cisco Press. vi Dedications “Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.” —Henry Ford From Diane: This book is dedicated to my loving husband, Allan Mertin, who not only heartily encouraged this project but also provided his insightful comments as our first-level reviewer; to our captivating and delightful son Nicholas, who never ceases to amaze us; to my parents, Syd and Beryl, for their continuous caring and love; and to my friends, including “the Girls,” for helping me keep my sanity! From Catherine: To Pierre Rivard, my soul mate and husband, the rock I stand on: Your vast knowledge of life and your work ethics are an inspiration for all of us. To our children, Laurence and Simon: Your intrepidity, inquisitive minds, and capacity to think logically delight us. vii Acknowledgments We would like to thank many people for helping us put this book together: The Cisco Press team: We are very fortunate to be working once again with a great team at Cisco Press . . . we hope someday to actually meet you! Many thanks to Brett Bartow, for initiating this project and guiding us through the process to completion. (We must admit, though, that it is good to be near the end!) Thanks to Drew Cupp, for his usual invaluable suggestions, eye for detail, and quick responses to our many queries. We would also like to thank San Dee Phillips, the project editor, and John Edwards, the copy editor, for their excellent work in steering this book through the editorial process. Also, many thanks to Tim Wright for always doing a great indexing job. The technical reviewers: We would like to thank the technical reviewers of this book—Amir Ranjbar, Shawn Boyd, and Keith Hutton—for their usual thorough, detailed review and very valuable input. It’s great to be working with you all again! Our families: Of course, this book would not have been possible without the constant understanding, patience, and tolerance of our families. They have always been there to motivate and inspire us. We thank you all. Each other: Last but not least, this book is a product of work by two friends, which made it even more of a pleasure (or, as Catherine says, less of a pain Í) to complete. We would also like to thank Tim Szigeti of Cisco Systems for his QoS work, and his willingness to share it and answer our queries. viii This Book Is Safari Enabled The Safari® Enabled icon on the cover of your favorite technology book means the book is available through Safari Bookshelf. When you buy this book, you get free access to the online edition for 45 days. Safari Bookshelf is an electronic reference library that lets you easily search thousands of technical books, find code samples, download chapters, and access technical information whenever and wherever you need it. To gain 45-day Safari Enabled access to this book: ■ Go to http://www.ciscopress.com/safarienabled ■ Enter the ISBN of this book (shown on the back cover, above the bar code) ■ Log in or Sign up (site membership is required to register your book) ■ Enter the coupon code ECEH-5YBF-7Q79-U2FC-1PVU If you have difficulty registering on Safari Bookshelf or accessing the online edition, please e-mail [email protected]. ix Contents at a Glance Introduction xviii Part I Designing Networks 2 Chapter 1 Network Design 4 Part II Technologies: What You Need to Know and Why You Need to Know It 26 Chapter 2 Switching Design 28 Chapter 3 IPv4 Routing Design 58 Chapter 4 Network Security Design 100 Chapter 5 Wireless LAN Design 130 Chapter 6 Quality of Service Design 148 Chapter 7 Voice Transport Design 172 Chapter 8 Content Networking Design 196 Chapter 9 Network Management Design 214 Chapter 10 Other Enabling Technologies 234 Part III Designing Your Network: How to Apply What You Know 250 Chapter 11 Case Study Context: Venti Systems 252 Chapter 12 Case Study Solution: Venti Systems 264 Part IV Appendixes 292 Appendix A References 294 Appendix B Network Fundamentals 300 Appendix C Decimal-Binary Conversion 340 Appendix D Abbreviations 350 Index 366
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