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Summary: A Low Latency, Loss Tolerant Architecture and Protocol for Wide Area Group
Communication
Yair Amir, Claudiu Danilov, Jonathan Stanton
Department of Computer Science
The Johns Hopkins University
Baltimore, Maryland 21218 USA¡
yairamir, claudiu, jonathan¢ @cs.jhu.edu
Abstract
Group communication systems are proven tools upon
which to build fault-tolerant systems. As the demands for
fault-tolerance increase and more applications require reli-
able distributed computing over wide area networks, wide
area group communication systems are becoming very use-
ful. However, building a wide area group communication
system is a challenge. This paper presents the design of
the transport protocols of the Spread wide area group com-
munication system. We focus on two aspects of the system.
First, the value of using overlay networks for application
level group communication services. Second, the require-
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