About the Authors

Wendell Odom, certified Cisco Systems instructor No. 1624, is a senior instructor with Skyline Advanced Technology Services, where he teaches the QOS, CCIE, and SAN courses. Wendell has worked in the networking arena for 20 years, with jobs in pre- and post-sales technical consulting, teaching, and course development. He has authored several books with Cisco Press, including Cisco ICND Exam Certification Guide, Cisco INTRO Exam Certification Guide, and Computer Networking First-Step, and he coauthored the first edition of this book.

Michael J. Cavanaugh, certified Cisco Systems instructor No. 4516, has been in the networking industry for more than 18 years. His employment with such companies as General Electric, Cisco Systems, Inc., and Bell South Communications Systems has allowed him to stay at the forefront of technology and hold leading-edge certifications. His current focus is on AVVID implementations, providing convergence consulting, professional services, and technical support. Michael's passion is learning the practical applications of new technologies and sharing knowledge with fellow engineers.