Deploying Cisco Wide Area Application Services PDF
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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, 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 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. 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 author and are not necessarily those of Cisco Systems, Inc. iii Trademark Acknowledgments All terms mentioned in this book that are known to be trademarks or service marks have been appropriate- ly capitalized. Cisco Press or Cisco Systems, Inc., cannot attest to the accuracy of this information. 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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 email at [email protected]. Please make sure to include the book title and ISBN in your message. We greatly appreciate your assistance. Publisher: Paul Boger Cisco Representative:Erik Ullanderson Associate Publisher:Dave Dusthimer Cisco Press Program Manager:Anand Sundaram Executive Editor:Mary Beth Ray Copy Editor/Proofreader:Deadline Driven Publishing Managing Editor:Patrick Kanouse Technical Editors:Jim French, Jeevan Sharma Senior Development Editor:Christopher Cleveland Indexer:Angie Bess Project Editor:Ginny Bess Munroe Editorial Assistant:Vanessa Evans Cover Designer: Sandra Schroeder Book Designer: Louisa Adair Composition:Mark Shirar Americas Headquarters Asia Pacific Headquarters Europe Headquarters Cisco Systems, Inc. Cisco Systems (USA) Pte. Ltd. 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All other trademarks mentioned in this document or website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0812R) 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
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