Performability evaluation of CSMA/CD and CSMA/DCR protocols undertransient fault conditions

This study compares the performability of the carrier sense multiple access protocol with collision detection (CSMA/CD) and a variant, the CSMA protocol with deterministic CD ( CSMA/DCR), which uses a deterministic collision-resolution, considering errors induced by transient faults. The long-term effect that transient faults can induce on the electronics which implement the protocols is considered. This is done using stochastic activity networks (SANs), a stochastic extension of Petri nets. SANs permits the detailed workings of CSMA/DCR and traditional CSMA/CD to be represented accurately, as well as the effects of transient faults