Using the NREN Testbed to Prototype a High-Performance Multicast Application

Development of the Next Generation Internet requires the development of revolutionary applications as well as advances in networking technologies. This paper presents experiences in using the NREN testbed to prototype a collaborative medical-imaging application. Technological requirements for this application include high-bandwidth reliable multicast and QoS provisioning. Engineering the network infrastructure for a demonstration in May 1999 was a challenging experience. We achieved high-bandwidth multicast for the demonstration; current efforts focus on satisfying application requirements for reliable multicast and QoS.