Rus Healy

Wendell Odom, CCIE No. 1624, is a 28-year veteran of the networking industry. He

currently works as an independent author of Cisco certification resources and occasional

instructor of Cisco authorized training for Skyline ATS. He has worked as a network

engineer, consultant, systems engineer, instructor, and course developer. He is author of

several best-selling Cisco certification titles. He maintains lists of current titles, links to

Wendell’s blogs, and other certification resources at


Rus Healy, CCIE No. 15025, has worked on several Cisco Press projects, including the

third edition of this book as a coauthor, and the second edition as a technical reviewer. Rus

is chief technology officer of Annese & Associates, Cisco’s Education Partner of the Year

for the Northeast US and Canada. Rus serves on the Board of Directors of Habitat for

Humanity of New York State and Habitat for Humanity of Ontario County, NY.


Denise Donohue, CCIE No. 9566, is senior solutions architect for ePlus Technology, a

Cisco Gold partner. She works as a consulting engineer, designing networks for ePlus’s

customers. Prior to this role, she was a systems engineer for the data consulting arm of

SBC/AT&T. She has co-authored several Cisco Press books in the areas of route/switch and

voice. Denise has been a Cisco instructor and course director for Global Knowledge and

did network consulting for many years. Her areas of specialization include route/switch,

voice, and data center.