Bibliography | Baumann, Joachim; Rothermel, Kurt: The Shadow Approach: An Orphan Detection Protocol for Mobile Agents. University of Stuttgart, Faculty of Computer Science, Technical Report No. 1998/08. 17 pages, english.
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CR-Schema | C.2.2 (Network Protocols) C.2.4 (Distributed Systems)
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Keywords | mobile agents; orphan detection; protocol; distributed systems |
Abstract | Orphan detection in distributed systems is a well researched field for which many solutions exist. These solutions exploit well defined parent-child relationships given in distributed systems. But they are not applicable in mobile agent systems, since no similar natural relationship between agents exist. Thus new protocols have to be developed. In this paper one such protocol for controlling mobile mobile agents and for orphan detection is presented. The `shadow' approach presented in this paper uses the idea of a placeholder (shadow) which is assigned by the agent system to each new agent. This defines an artificial relationship between agents and shadow. The shadow records the location of all dependent agents. Removing the root shadow implies that all dependent agents are declared orphan and are eventually terminated. We introduce agent proxies that create a path from shadow to every agent. In an extension of the basic protocol we additionally allow the shadow to be mobile. The shadow approach can be used for termination of groups of agents even if the exact location of each single agent is not known.
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Full text and other links | HTML (generated from PostScript)
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Department(s) | University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Distributed Systems
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Entry date | July 20, 1998 |
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