Traffic Management For ATM Local Area Networks Using A Combined Preventive/Reactive Control Mechanism

Abstract

This paper investigates how the performance of a preventive control scheme using a Leaky Bucket can be improved by using a feedback control loop. The proposed scheme is adaptive to congestion within the network. The queue occupancy of a network element is used as an indication of congestion and the individual sources, whose transmission path passes through the congested switch, are informed to reduce their activity. The effects of the transmission delay and the system parameters on the system performance are examined. The results show that appropriate feedback control in ATM LANs considerably improves the cell loss performance due to congestion