The quasi-random input queueing system with repeated attempts as a model for a collision-avoidance star local area network

A performance model is developed and validated for a local area network (LAN) with a star topology. A collision-avoidance network access protocol, as implemented in Hubnet, is considered. The model is based on a single server queueing system with finite sources and with a single buffer. Packets arriving at a full buffer retry their access after a fixed time period. Results for an eight-node network are presented and validated by means of earlier obtained simulation results.