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Each network suffers from different kinds of active and passive attacks. But in case of sensor network this problem is more critical as each node lose some energy on each communication and thus needs effective reconfiguration of network that minimize energy loss. In this paper, the authors propose an ant based approach to perform the dynamic reconfiguration of network as some broken link or the attack node found over the network. The complete work is divided in three main stages. In first stage, the communication is performed through the effective shortest path. The second stage, the identification of block node or the attack node over the network is performed and in third stage, the network reconfiguration is performed as the bad nodes are detected.
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