Vijay Bollapragada, CCIE No. 1606, is a director in the Network Systems Integration and Test Engineering group at Cisco Systems, where he works on the architecture, design, and validation of complex network solutions. An expert in router architecture and IP Routing, Vijay is a co-author of another Cisco Press publication titled Inside Cisco IOS Software Architecture. Vijay is also an adjunct professor in the Electrical Engineering department at Duke University.

Mohamed Khalid, CCIE No. 2435, is a technical leader working with IP VPN solutions at Cisco Systems. He works extensively with service providers across the globe and their associated Cisco account teams to determine technical and engineering requirements for various IP VPN architectures.

Scott Wainner is a Distinguished Systems Engineer in the U.S. Service Provider Sales Organization at Cisco Systems, where he focuses on VPN architecture and solution development. In this capacity, he works directly with customers in a consulting role by providing guidance on IP VPN architectures while interpreting customer requirements and driving internal development initiatives within Cisco Systems. Scott has more than 18 years of experience in the networking industry in various roles including network operations, network installation/provisioning, engineering, and product engineering. Most recently, he has focused his efforts on L2VPN and L3VPN service models using MPLS VPN, Pseudowire Emulation, and IPSec/SSL to provide VPN services to both enterprises and service providers. He holds a B.S. in Electrical Engineering from the United States Air Force Academy and a M.S. in Electronics and Computer Engineering from George Mason University in Fairfax, Virginia. Scott is currently an active member of the IEEE and the IETF.