Fault tolerance in Clos-Knockout multicast ATM switch

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)783-798
Journal / PublicationInternational Journal of Communication Systems
Issue number9
Publication statusPublished - Nov 2002


In this paper, we propose a new architecture for multicast ATM switches with fault tolerant capability based on the Clos-Knockout switch. In the new architecture, each stage has one more redundant switch module. If one switch module is faulty, the redundant module would replace the faulty one. On the other hand, under the fault-free condition, the redundant modules in the second and third stages will provide additional alternative internal paths, and hence improve the performance. The performance analysis shows that the cell loss probability is lower than the original architecture when all modules are fault free, and the reliability of the original architecture is improved.

Research Area(s)

  • ATM switch, Fault tolerant, Multicast