David Jansen, CCIE No. 5952, is a Vertical Solutions Architect for Manufacturing for Cisco's US Enterprise Segment, where he works with enterprise customers to address end to end manufacturing architectures. Steve McQuerry, CCIE No. 6108, is consulting systems engineer with Cisco focused on data center architecture. He has been an active member of the internetworking community since 1991. He formerly worked with Global Knowledge, teaching and developing coursework based on Cisco technologies and certification programs. Ron Fuller, CCIE #5851 (Routing and Switching/Storage Networking) is a Technology Solution Architect for Cisco specializing in end-to-end enterprise data center architectures.