A proposed modification for the DQDB protocol and its effect on fairness and performance

Abstract

The performance and fairness issues involved in general, and under overload conditions in particular, are examined for the distributed queue dual bus network. An erasure-nodes modification to the protocol is studied and implemented in a simulation model. Subnetwork parameters such as average throughput and average bus access delays are monitored. Fair and equitable allocation of bandwidth among nodes at the center of the dual bus is observed.