Table Of ContentMobile IP Technology and Applications
Stefan Raab
Madhavi W. Chandra, Ph.D.
Contributing Author: Kent Leung
Foreword by Fred Baker
Cisco Press
800 East 96th Street
Indianapolis, IN 46240 USA
ii
Mobile IP Technology and Applications
Stefan Raab
Madhavi W. Chandra, Ph.D.
Contributing Author: Kent Leung
Copyright© 2005 Cisco Systems, Inc.
Published by:
Cisco Press
800 East 96th Street
Indianapolis, IN 46240 USA
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Printed in the United States of America 1 2 3 4 5 6 7 8 9 0
First Printing June 2005
Library of Congress Cataloging-in-Publication Number: 2002116861
ISBN: 158705132X
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About the Authors
Stefan Raab joined Cisco Systems in January 2001 from Nextel Communications as a technical leader and deploy-
ment engineer for the IP Mobility group, IOS Technologies Division (ITD). He has over nine years of experience
with IP mobility deployments and is an expert on real-life applications for the technology. Since joining Cisco, Mr.
Raab has focused on bringing his real-world experience to the software engineering process and relating advanced
technologies to customers. Presently, he is working with advanced mobility technologies, including Mobile IPv6,
Ad Hoc Networking, and Mobile IPv4 optimizations. He is coinventor of numerous patents submitted to the United
States Patent and Trademark Office. Mr. Raab holds his B.S. degree in computer science from the College of Will-
iam and Mary. He currently resides in South Riding, Virginia, with his wife, Jennifer, and daughter, Katrina. He has
innumerable hobbies, ranging from woodworking and photography to training for and competing in triathlons.
Madhavi W. Chandra joined Cisco Systems in May 2000 from the National Institute of Standards and Technology
as a software engineer for the IP Mobility group, IOS Technologies Division (ITD). She holds a bachelor of science
degree in computer engineering from the University of Miami, and master’s and Ph.D. degrees in computer engi-
neering from Johns Hopkins University. Madhavi is instrumental in designing advanced technologies in IOS
mobility involving features for Mobile IP and Mobile Ad Hoc Networks, in which she is one of the lead architects.
Madhavi has various publications, including technical IEEE journal papers, IEEE conference papers, white papers,
Internet drafts, and RFCs. She is coinventor of numerous patents submitted to the United States Patent and Trade-
mark Office. Above all, Madhavi feels blessed to have a loving and spirited brother, Manoj, and a supportive family.
She resides in Cary, North Carolina, with her husband, Sanjai, and son, Kaveen. One of the driving sayings in her
life is, “It is nice to be important, but it is far more important to be nice and maintain your integrity.”
About the Contributing Author
Kent Leung is a Cisco Distinguished Engineer at Cisco Systems, where he joined in January 1994. As the original
Cisco IOS developer for Mobile IP, he was instrumental to the success in the first commercial deployment of this
technology. Kent has been the lead architect for many Mobile IP features in Cisco routers and switches. Numerous
innovations were issued patents from the United States Patent and Trademark Office. His contributions to standards
development organizations include IETF, 3GPP2, and WiMAX. Kent received his bachelor of science degree in
electrical and computer engineering from the University of California, Davis. He cherishes family time with his
wife, Lynn, and children, Amy and Austin. His hobbies include tennis, reading, watching movies, and traveling.
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About the Technical Reviewers
Steven Glass has a decade-long history with Mobile IP, beginning with its early days as an IETF draft in 1994.
While with FTP Software from 1992–1998, Steven developed the first commercially available Mobile Agents in
1994, participated in the first Mobile IP Testathon in 1995, became its lead engineer in 1996, and coordinated the
second Mobile IP Testathon in 1997. Employed by Sun Microsystems in 1999, he was the senior staff technical lead
for Sun Microsystems’ Mobile IP project from 2001–2002. Beyond Mobile IP, Steven became the technical lead for
the release of Solaris 9 update 3 from 2002–2003. Other contributions include RFCs 3543, 2989, 2977, 2504, 2290,
and 2196 for the IETF; several technical book reviews for Prentice Hall and Addison-Wesley, magazine publications,
white papers, architectures, and draft reviews too numerous to mention; and he has contributed to many technological
innovations, including a U.S. Patent application through Sun Microsystems for his work with “Home Agents as
DHCP Proxies.” Also an Internet Security and Privacy expert, Steven contributed to several startup ventures as a
network and security architect for distributed video-processing systems, his own home-network appliances, and he
is currently working on his own publication in Geoelectrodynamics. Steven received his bachelor’s degree in Physics
and Mathematics in 1991 from Boston University, where he also did post-graduate work. He has spent time in 25
countries, and his hobbies include a passion for baseball, mountain biking, sea kayaking, scuba diving, tennis, and
skiing.
Richard Shao, CCIE No. 5723, joined Cisco in 1999 and is currently working as a technical marketing engineer
supporting IP mobility in the Cisco Internet Technology Division. Prior to working in this division, Richard was a
technical lead dealing with Cisco Catalyst switches in the Cisco Technical Assistance Center (TAC). Richard earned
his master of science degree in telecommunication from the University of Colorado at Boulder.
Kevin Turek, CCIE No. 7284, joined Cisco in 2000 and is currently working as a network consulting engineer sup-
porting wireless/mobility on the Advanced Technology in Cisco’s Federal Support Program. He has been involved
with several Cisco Press projects, including coauthoring the Cisco Press book Cisco Catalyst QoS: Quality of Ser-
vice in Campus Networks. Kevin earned his Bachelor of Science degree in business administration at the State Uni-
versity of New York, Stony Brook.
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Dedications
To Jennifer, for supporting me in this process and in life. To Katrina, for giving up so much daddy time and for
being my hope and joy. And to my family and friends for their encouragement and motivation.
—Stefan Raab
To my parents, Sunanda and Subbarao Wunnava, for being my unconditional pillars, and to Asha and Pravosh
Gupta, for their love. To my husband, Sanjai, who is my entrusted beacon. And to my son, Kaveen, whose smile
lights up my heart and who instantaneously became the essence of my life.
—Madhavi W. Chandra
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Acknowledgments
We want to thank the IOS Mobile IP team for giving us support, answering questions, clarifying text, and most of
all, building the product. We would also like to thank our manager, Read Bell, for supporting us during the process.
We are grateful to our technical reviewers for taking the time to apply their expertise in reviewing the manuscript.
We are grateful to our technical reviewers, Steve Glass, Richard Shao, and Kevin Turek, for taking the time to apply
their expertise in reviewing the manuscript, and to Fred Baker for stepping up to write the foreword for our book.
viii
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Contents at a Glance
Foreword xvii
Introduction xviii
Chapter 1 Mobile and Wireless Technologies 3
Chapter 2 Understanding Mobile IP 13
Chapter 3 Mobile IP Security 57
Chapter 4 IOS Mobile IP in the Lab 77
Chapter 5 Campus Mobility: Client-Based Mobile IP 95
Chapter 6 Metro Mobility: Client-Based Mobile IP 119
Chapter 7 Metro Mobility: Cisco Mobile Networks 145
Chapter 8 Deployment Scalability and Management 183
Chapter 9 A Look Ahead 207
Appendix A Answers to Review Questions 249
Appendix B IOS Mobile IP: Supported SNMP MIBs 275
Index 283
