Gary T. Heap, CCIE No. 6411, is a Senior Network Systems Engineer for Cornerstone Internetworking Solutions, where he provides consulting and project services for various companies throughout the United States. He has more than four years of experience in analyzing, configuring, and managing large networks. Prior to joining Cornerstone, Gary worked as a Technical Solutions Consultant for Sprint E|Solutions. His project experience at Sprint included upgrading routers, switches, and dial backup for a nationwide network, configuring backbone routers for wireless ISP, network assessment, and WAN redesign.