Wendell first entered the world of TCP/IP back in 1990, when TCP/IP began to replace proprietary protocols in corporate networks, supporting IBM's new TCP/IP products, routers, and LAN products while still at IBM. He moved away from IBM into the Cisco world by the mid 90's, teaching many different Cisco authorized courses for Cisco training partners, including courses on routing, switching, SNA, ATM, MPLS, WAN switching, load balancing, and QoS. He passed the CCIE R/S lab in 1995.
Wendell has worked alongside Cisco Press, a publishing alliance between Cisco Systems® (NASDAQ: CSCO) and the Pearson Education division of Pearson plc (NYSE: PSO).Over the years, he has written books from the entry-level CCENT through CCIE, books for the Cisco Networking Academy, general networking technology books, textbooks, plus other learning products. He's written all editions of the best-selling CCENT and CCNA R/S Cert Guides, as well as consulting on the design of the CCNA Network Simulator.