A High Performance Fault-Tolerant Switching Network for ATM

Jeen-Fong LIN  Sheng-De WANG  

IEICE TRANSACTIONS on Communications   Vol.E78-B   No.11   pp.1518-1528
Publication Date: 1995/11/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Switching and Communication Processing
asynchronous transfer mode,  fault-tolerant,  unit node contribution,  unit edge contribution,  

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A new high-performance fault-tolerant ATM switching network is proposed. This network contains the baseline network and has many redundant switching elements to enhance the fault tolerance and throughput of the conventional multistage interconnection networks. The presented routing algorithm is very simple and can support a very huge number of paths between each input-output pair. The paths can be used to route cells when internal cell contentions occur in switching elements. The redundant switching elements at the last stage offer two access points to the output ports to resolve the output conflict. Performance analysis and simulation results show that this network has better maximum throughput even for faulty conditions. Among various networks, it has the largest number of redundant paths, and the greatest unit node contribution and unit edge contribution.