Eswaran, Hamacher, and Shedler have proposed an access control scheme for a local area bus network. The control scheme is simple and asynchronous, and provides for collision-free communication among ports of the network. It is also efficient in the use of the bus bandwidth in the sense that there is only a small fraction of time during which the bus is idle when there is at least one packet available for transmission. Emphasizing the characteristics of bus access response times at the individual ports, this paper provides an analysis of the performance of the control scheme. © 1982.