Robert, CCIE No. 17091, is a leading networking expert, specializing in routing and switching. With more than ten years of experience in the information technology industry, Lesar is a content developer for Cisco courses from the CCNA, CCNP, CCNA SP, CCNP SP, and CCNP Security tracks, and was lead developer for the CCNP SP, BGP and MPLS courses. He also shows his skills as an instructor for specialized Cisco Systems courses and as a lecturer at home and around the world, where he shares his knowledge primarily with Cisco Systems engineers. His passion is delivering bootcamps to the engineers who are preparing for Routing and Switching CCIE exam. As a Cisco Systems Proctor, his job is to help candidates pass a rigorous test to become a Cisco Certified Systems Instructor (CCSI).