Enhancing Routing Robustness of Unstructured Peer-to-Peer Networks Using Mobile Agents

  • Authors:

  • Ming Xu;Shuigeng Zhou;Jihong Guan

  • Affiliations:

  • College of Information Engineering, Shanghai Maritime University, Shanghai, China 201306;Shanghai Key Lab of Intelligent Information Processing, and School of Computer Science, Fudan University, Shanghai, China 200433;Department of Computer Science and Technology, Tongji University, Shanghai, China 201804

  • Venue:
  • Journal of Network and Systems Management
  • Year:
  • 2012

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Abstract

The growing popularity of Peer-to-Peer (P2P) technology in real applications in recent years has sparked increasing interest from both academia and industry in designing resilient P2P networks for these applications. Routing is a crucial technique to support successful P2P applications, and designing robust routing mechanisms is still a technical challenge for P2P systems and applications due to their inherent dynamics. This paper addresses the issue of resilient routing in unstructured P2P networks. To this end, we first propose a novel query routing approach to improving query performance in unstructured P2P networks, and then develop a mobile agent based network reconfiguration mechanism that provides a combined node and link failure diagnosis and restoration to maintain routing performance even in dynamic network environments. Simulated results show that the proposed query routing approach can achieve a good tradeoff between query hit rates and space costs in scale-free networks and that the mobile agent based network reconfiguration mechanism outperforms the existing methods in different types of network topologies.