FaultTolerant Adaptive Mobile Agent System using Dynamic Role based Access Control

Abstract

With the advancement in the Mobile Agent Technology, the use of Mobile Agents has extended to a lot of applications, where a coordinated approach is required to achieve certain tasks. In a co-ordinated approach, the roles that are being held by a Mobile Agent play a vital role. There are chances that a mobile agent fails while performing an operation inside a system, due to various factors. The system must be tolerant enough to encounter such situations. This paper introduces a special category of Mobile Agent named Adaptive Mobile Agent, which is designed to accept additional roles, while working inside an environment. This paper also introduces the eXtended Volunteer Algorithm, which performs role assignment in an efficient manner, reducing the overload due to additional roleassignment. This helps the agent to accept roles under dynamic conditions, based on the rules in the agent environment which would help to achieve a fault-tolerant system. The experimental results obtained with the usage of eXtended Volunteer Algorithm over the Adaptive Mobile Agents prove to be more efficient in fault-tolerance.