He is also the Director of the Centre for Internet Research. He is actively associated with Singapore Advanced Research and Education Network Project (SingAREN), and has involved in network research and connectivity issues relating to Internet2. He is one of the key players in developing the NUS's campus secure plug-and-play network. His research areas of interest include end-to-end performance of transport protocols, interoperability issues between IPv4 and IPv6, and distributed systems. He is a member of the IEEE Computer and Communications Societies.