From Ramesh Kaza and Salman Asadullah:

There are many people who helped us to make this project successful. Please forgive us if we have inadvertently omitted the name of anymore who made such helpful contributions.

Thanks go to the following:

Himanshu Desai, senior manager, Advanced Services; Mike Quinn, VP, technical support; Kadir Koken, director, customer advocacy; and Khalid Raza, Cisco Distinguished Engineer, Cisco Systems, Inc., who encouraged us to write this book and supported us throughout this project.

Abderrahmane Mounir, network consulting engineer, Cisco Systems, Inc., for contributing to Chapter 6, verifying the configuration examples, reviewing the entire book, and providing valuable feedback.

Gert Vanderstraeten, enterprise architect for the Advisory Services team at Cisco Systems, Inc., for contributing to Chapter 7, reviewing the entire book, and providing valuable feedback.

Rajesh Ramarao, technical leader, Cisco Systems, Inc., for his contributions to parts of Chapter 9.

Jake Hartinger, technical leader, Cisco Systems, Inc., for humbly contributing to the valuable questionnaires in Appendixes B and C.

Niels Brunsgaard, technical leader, Cisco Systems, Inc., for reviewing parts of the book and providing valuable suggestions.

Mark Gallo, technical manager, America Online, for reviewing the entire book, helping in content rearrangement, and providing valuable feedback.

Thanks to all our colleagues and friends at Cisco Systems, Inc. whose work has helped us to complete this project. Especially, thanks to the members of the Advanced Services team: Hymed Besrour, Jine-Wen-Kou, Talal Siddiqui, Oludare Odunuga (Tola), Dave Turner, John Vosburg, Alvin Laguerta, Sanjay Jani, Imran Chaudhary, Kathy Decker, and Wesley Shuo.

Thanks to all the customers with whom we have worked over several years and in doing so acquired valuable knowledge and expertise that we have documented in this book.

We would like to express our special thanks to John Kane, editor in chief, for his expert guidance; Andrew Cupp and Jennifer Foster, development editors; Bill McManus, copy editor; Tammi Barnett, editorial assistant; and all other staff at Cisco Press for making this publication possible.