Deploying Cisco Wide Area Application Services

649 Pages·2010·10.68 MB·English

by  Zach Seils

Deploying Cisco Wide Area
Application Services,
Second Edition
Joel Christner, CCIE No. 15311
Zach Seils, CCIE No. 7861
Nancy Jin
Cisco Press
800 East 96th Street
Indianapolis, IN 46240
ii Deploying Cisco Wide Area Application Services
Deploying Cisco Wide Area Application Services,
Second Edition
Joel Christner, Zach Seils, Nancy Jin
Copyright© 2010 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,
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Printed in the United States of America
First Printing January 2010
Library of Congress Cataloging-in-Publication data is on file.
ISBN-13: 978-1-58705-912-4
ISBN-10: 1-58705-912-6
Warning and Disclaimer
This book is designed to provide information about deploying Cisco Wide Area Application Services
(WAAS). Every effort has been made to make this book as complete and as accurate as possible, but no
warranty or fitness is implied.
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The opinions expressed in this book belong to the author and are not necessarily those of Cisco Systems, Inc.
iii
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iv Deploying Cisco Wide Area Application Services
About the Authors
Joel Christner, CCIE No. 15311, is a distinguished engineer at StorSimple, Inc. Before
StorSimple, Joel was a technical leader in the Application Delivery Business Unit (ADBU)
at Cisco Systems, Inc., driving the long-term product strategy, system architecture, and
solution architecture for the Cisco Wide Area Application Services (WAAS) product and
the Cisco broader application delivery solution. Previously, Joel was director of product
management for Reconnex Corporation (acquired by McAfee), the industry leader in data
loss prevention (DLP) solutions. Prior to joining Reconnex, Joel was the senior manager of
technical marketing for ADBU at Cisco Systems, Inc, and a key contributor to the WAAS
product line, helping shape the system architecture, craft the product requirements, and
enable a global sales team to sell and support the product in a hyper-competitive market.
Joel is co-author of the first edition of this book and also co-author of Application
Acceleration and WAN Optimization Fundamentals(Cisco Press) with Ted Grevers, Jr,
which outlines architecture and relevance for WAN optimization and application accelera-
tion technologies in today’s dynamic IT organizations.
Zach Seils, CCIE No. 7861, is a technical leader in the Application Delivery Business
Unit (ADBU) at Cisco Systems, Inc. Zach is currently focused on developing the architec-
ture and network integration aspects of next-generation WAN optimization and applica-
tion acceleration platforms. In addition, Zach is frequently engaged with partners and
internal Cisco engineers worldwide to advise on the design, implementation, and trou-
bleshooting of Cisco WAAS. Previously, Zach was a technical leader in the Cisco
Advanced Services Data Center Networking Practice, where he served as a subject matter
expert in Application Networking Services for the largest Enterprise and Service Provider
customers at Cisco. Zach is co-author of the first edition of this book and was also a
technical reviewer of Application Acceleration and WAN Optimization Fundamentals
(Cisco Press) by Joel Christner and Ted Grevers, Jr.
Nancy Jin is a senior technical marketing engineer in the Application Delivery Business
Unit (ADBU) at Cisco Systems, Inc. where she helps develop requirements for product
features, drive sales enablement, and manage technical training development for the Cisco
WAAS product family. Before Cisco, Nancy held senior systems engineering positions
with well-known network and managed service providers, including InterNAP Network
Services, Telstra USA, Sigma Networks, and MCI Worldcom.
v
About the Technical Reviewers
Jim Frenchresides in New Jersey. He has more than 15 years of experience in informa-
tion technologies. A 12-year veteran of Cisco, Jim has been in the position of distin-
guished system engineer since early 2003 and holds CCIE and CISSP certifications. Since
joining Cisco, he has focused on routing, switching, voice, video, security, storage, con-
tent networking, application delivery, and desktop virtualization. Primarily, Jim has
helped customers decrease their upfront capital investments in application infrastructure,
reduce application operational costs, speed application time to market, increase applica-
tion touch points (interactions), increase application availability, and improve application
performance. Working internally with Cisco marketing and engineering, Jim is instrumen-
tal in driving new features, acquisitions, and architectures into Cisco solutions to make
customers successful. Prior to joining Cisco, Jim received a BSEE degree from Rutgers
University College of Engineering in 1987 and later went on to obtain an MBA from
Rutgers Graduate School of Management in 1994. In his spare time, Jim enjoys spending
time with family, friends, running, racquetball, basketball, soccer, traveling, coaching
youth recreation sports, and fathering his amazing son Brian.
Jeevan Sharma, CCIE No. 11529, is a technical marketing engineer at Cisco. He works
with Application Delivery Business Unit (ADBU). Jeevan has more than 9 years of experi-
ence at Cisco and 13 years of overall Information Technology experience. Since joining
Cisco, he has held various technical roles in which he has worked extensively with Cisco
customers, partners, and system engineers worldwide on their network designs, and the
implementation and troubleshooting of Cisco products. Working with engineering and
product management at Cisco, he has been focused on systems and solutions testing, new
feature development and product enhancements to improve the quality of Cisco prod-
ucts, and solutions for customers. Prior to Cisco, Jeevan worked at CMC Limited and
HCL Technologies, where he spent time with customers on their network design and sys-
tems integration. In his spare time, Jeevan enjoys family and friends, tennis, hiking, and
traveling.
vi Deploying Cisco Wide Area Application Services
Dedications
This book is dedicated to my beautiful wife Christina, our family, and to our Lord and
Savior Jesus Christ; through Him all things are possible.
—Joel Christner
This book is dedicated to my love. You have opened my eyes and heart and soul to things
I never knew were possible. I am honored that you have let me in your life. I can never
thank you enough for these things. Your unfaltering love, caring heart, and beautiful
smile are what inspires me to keep going day after day. I love you.
—Zach Seils
This book is dedicated to my most supportive family. To my husband Steve, my parents,
and parents-in-law, thank you for always being there for me. To my lovely sons Max and
Leo, I love you!
—Nancy Jin
vii
Acknowledgments
From JoelChristner:To Christina, my beautiful, loving, and patient wife—thank you. I
promise I won’t write another book for a little while. This time, I mean it. I know you’ve
heard THAT before.
I’d like to express my deepest appreciation to you, the reader, for taking the time to read
this book. Zach, Nancy, and I are honored to have been given the opportunity to earn a
spot in your personal library, and we look forward to your feedback.
To Zach and Nancy, for being such great co-authors and good friends. Your expertise and
ability to clearly articulate complex technical concepts are unmatched, and I’m thankful
to have been given the opportunity to collaborate with you. Many thanks to Jim French
and Jeevan Sharma, our technical reviewers. Your attention to detail and focus helped
keep our material accurate and concise. It was a pleasure working with you on this
book—and at Cisco.
A tremendous thank you to the production team at Cisco Press—your guidance has been
great, and Zach, Nancy, and I appreciate you keeping us on track and focused.
From ZachSeils:To my love, I could not have finished this project without your constant
encouragement. Thank you. To Rowan, Evan, and Jeeper, I love you guys more than you
will ever know.
To the technical reviewers Jim French and Jeevan Sharma, Thanks for all your hard work
to make this edition of the book a top-notch technical reference. I know that the quality
of this project increased significantly due to your contributions.
I’d like to give special thanks to my co-authors Joel and Nancy, thanks for making this
project happen and your patience throughout the writing process.
Thanks to the Cisco Press team for your patience and support throughout this project.
From Nancy Jin: My most sincere appreciation goes to Joel Christner, who introduced
me to this wonderful opportunity. It is a great honor to work with such a talented team.
Thank you, Jim French and Jeevan Sharma, for doing such great a job as the technical
reviewers. Thank you Cisco Press for working on this project with us.
viii Deploying Cisco Wide Area Application Services
Contents at a Glance
Foreword xix
Introduction xx
Chapter 1 Introduction to Cisco Wide Area Application Services (WAAS) 1
Chapter 2 Cisco WAAS Architecture, Hardware, and Sizing 49
Chapter 3 Planning, Discovery, and Analysis 77
Chapter 4 Network Integration and Interception 107
Chapter 5 Branch Office Network Integration 153
Chapter 6 Data Center Network Integration 203
Chapter 7 System and Device Management 249
Chapter 8 Configuring WAN Optimization 319
Chapter 9 Configuring Application Acceleration 401
Chapter 10 Branch Office Virtualization 473
Chapter 11 Case Studies 511
Appendix A WAAS Quickstart Guide 547
Appendix B Troubleshooting Guide 569
Appendix C 4.0/4.1 CLI Mapping 595
Index 599
ix
Contents
Foreword xix
Introduction xx
Chapter 1 Introduction to Cisco Wide Area Application Services (WAAS) 1
Understanding Application Performance Barriers 3
Layer 4 Through Layer 7 4
Latency 7
Bandwidth Inefficiencies 10
Throughput Limitations 11
Network Infrastructure 12
Bandwidth Constraints 12
Network Latency 15
Loss and Congestion 19
Introduction to Cisco WAAS 21
WAN Optimization 23
Data Redundancy Elimination 25
Persistent LZ Compression 30
Transport Flow Optimization 30
Secure Sockets Layer (SSL) Optimization 31
Application Acceleration 33
Object and Metadata Caching 36
Prepositioning 38
Read-Ahead 39
Write-Behind 40
Multiplexing 41
Other Features 42
Branch Virtualization 45
The WAAS Effect 46
Summary 48
Chapter 2 Cisco WAAS Architecture, Hardware, and Sizing 49
Cisco WAAS Product Architecture 49
Disk Encryption 50
Central Management Subsystem 51
Interface Manager 51
Monitoring Facilities and Alarms 52
Network Interception and Bypass Manager 52