RCES: a replication/contention/elimination strategy for replication baseline ATM switch architectures

Abstract

A baseline switch architecture with several independent network planes has been proposed to enhance the switching efficiency. This paper proposes a replication/competition/elimination strategy (RCES) for the dual-baseline switch architecture with two parallel network planes to increase the throughput and decrease the effect of the head of line (HOL). For each incoming cell, the RCES first duplicates it and forwards the copy cell into a different inlet in another plane to find another route to pass through the network plane. Based on this strategy, cells will have a better chance of being switched out successfully even when the head of line occurs or burst traffic crowds toward a hot spot. When congestion occurs in the buffers, the cell behind another identical cell will be dropped immediately to reduce the cell loss probability. The performance of the proposed strategy is evaluated by simulations. Simulation results show that the proposed method obtains a higher throughput and lower cell loss probability than the traditional baseline network does.