Campus network design fundamentals

409 Pages·3.6 MB·English

by  Teare, Diane, Paquet, Catherine

Campus Network Design
Fundamentals
Diane Teare
Catherine Paquet
Cisco Press
800 East 96th Street
Indianapolis, IN 46240 USA
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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-
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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
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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.
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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.
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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.
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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.
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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