The Computer Communications Laboratory, founded in 1999 and led by Dr. Harish Sethu, conducts both fundamental and applied research in the design and analysis of protocols, architectures, and algorithms in computer networks. Research efforts in this laboratory have primarily focused on performance, quality-of-service and robustness with applications to computer networks at all scales, from interconnection networks of parallel computer systems and web servers to large-scale distributed networks such as the Internet. Recent efforts have also focused on areas of research such as sensor networks, practical pricing strategies for the Internet, network security issues beyond cryptography, and large-scale dynamics of the Internet. Primary sponsors of the research in this laboratory include NSF, DARPA, Department of Defense, Lockheed Martin, and Northrop Grumman Corporation.