His research involves simplifying the management of distributed systems and networks through principles of self-organization and self-diagnosis, with an emphasis on sensornet/wireless networks, overlay networks, and the Internet. As part of his six-year collaborations with AT&T Labs, his work on the Routing Control Platform has been deployed and is in daily use on their North American IP backbone. He received the NSF CAREER award in 2011 for his work in Internet debugging.