Building Resilient Unstructured Peer-to-Peer Networks Using Mobile Agents

The tremendous growth of research in Peer-to-Peer (P2P) systems in recent years has initiated rising interests on how to design resilient networks for these systems. In this paper, we propose a novel query routing mechanism for improving query performance and a mobile agent based dynamic network reconfiguration mechanism for providing combined node and link failure diagnosis and restoration in unstructured P2P networks. Experimental results show that our query routing mechanism achieves a good tradeoff between query hit rate and space cost in scale-free network and our mobile agent based dynamic network reconfiguration mechanism performs better than existed methods in different types of network topologies.