Wade Edwards, CCIE, has over 15 years of networking experience and has been actively involved in the computer industry for over 24 years. Todd Lammle, CCNP is CEO and Chief Scientist of RouterSim, LLC and President of GlobalNet Training, Inc., and is the author of the best-selling CCNA: Cisco Certified Network Associate Study Guide from Sybex. Tom Lancaster, CCIE, is a consultant with IBM Global Services. Justin Menga, CCIE, is a Network Solutions Architect in the wireless and e-infrastructure field in New Zealand. Eric Quinn, CCSI, CCNP + Voice is an Arizona-based instructor and security consultant. Jason Rohm, CCIE, is a network consultant and adjunct instructor from Green Bay, Wisconsin. Carl Timm, CCIE, has over 10 years of experience in the design and implementation of large scale IP-based internetworks. Bryant Tow has over 15 years of experience in the IT industry as an instructor and entrepreneur.