Where I work:   I currently spend my professional time on developing and maintaining the ns-3 network simulator, a tool used for studying performance of computer communication networks. ns-3 is a free, open source software project that I organized about fifteen years ago. When not maintaining ns-3, I provide freelance software consulting for organizations using ns-3, and I also participate in research projects and have taught courses as an Affiliate Professor in Electrical & Computer Engineering at the University of Washington in Seattle, WA.

• I am serving as Director for the NS-3 Consortium.
• I belong to ACM SIGCOMM and SIGSIM.
• I served for several years (2004-2012) as the co-chair of the IRTF Host Identity Protocol research group, and was a member of the Internet Research Steering Group.
• Through the University of Washington, I have been a member of several exam and thesis committees for graduate students.

From 2001-2014, I worked at Boeing Research & Technology, where I was named a Boeing Technical Fellow.

Prior to Boeing, I worked at Geocast Network Systems (a former technology company focused on developing an end-to-end data broadcasting system, using MPEG-2 based broadcast systems, for consumers), where we studied reception characteristics of the ATSC digital television standard. I also helped to design and implement Geocast's IP-based data broadcasting network, which distributed data feeds via satellite to several U.S. television stations.

I obtained my Ph.D. in EECS at U.C. Berkeley in the late 1990s, where I was a member of the BARWAN/Daedalus research project (short video here)

I also worked for COMSAT Laboratories for several years in their data networking division.

Before that, I attended Stanford University for undergraduate and Masters degrees. My hometown is Greensburg, PA, outside of Pittsburgh.