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Fault tolerance in Clos–Knockout multicast ATM switch
Author(s) -
Chan K. S.,
Chan Sammy,
Ko K. T.
Publication year - 2002
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.563
Subject(s) - clos network , computer science , multicast , fault tolerance , computer network , architecture , reliability (semiconductor) , distributed computing , multistage interconnection networks , fault (geology) , interconnection , power (physics) , art , physics , quantum mechanics , seismology , visual arts , geology
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. Copyright © 2002 John Wiley & Sons, Ltd.