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The Computer Journal Advance Access published online on November 21, 2008
The Computer Journal, doi:10.1093/comjnl/bxn061
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© The Author 2008. Published by Oxford University Press on behalf of The British Computer Society. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Preserving the Fault-Containment of Ring Protocols Executed on Trees

Yukiko Yamauchi1,*, Toshimitsu Masuzawa1 and Doina Bein2

1 Graduate School of Information Science and Technology, Osaka University, Osaka, Japan
2 Department of Computer Science, University of Texas at Dallas, Richardson, USA

* Corresponding author: y-yamaut{at}ist.osaka-u.ac.jp

Received 19 December 2007; revised 13 August 2008

Reliable and fault-tolerant distributed systems have been attracting more and more attention (see Autonomic Computing Project by IBM, http://www-03.ibm.com/autonomic/). A self-stabilizing protocol is a fault-tolerant protocol that guarantees autonomous recovery from any number of and any type of faults that can affect the data stored locally at some process(es). If the impact of the faults can be contained to the affected process(es) and some of its immediate neighbors, then the protocol is also fault-containing. We present a new method, called causal simulation, which preserves the fault-containing property of ring protocols executed on trees.

Key Words: fault-containment • ring embedding • ring protocol • self-stabilization • virtual ring


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