Self-healing protocols for connectivity maintenance in unstructured overlays

Abstract

Abstract-In this paper, we discuss on the use of self-organizing protocols to improve the reliability of dynamic Peer-to-Peer (P2P) overlay networks. Two similar approaches are studied, which are based on local knowledge of the nodes' 2nd neighborhood. The first scheme is a simple protocol requiring interactions among nodes and their direct neighbors. The second scheme adds a check on the Edge Clustering Coefficient (ECC), a local measure that allows determining edges connecting different clusters in the network. The performed simulation assessment evaluates these protocols over uniform networks, clustered networks and scalefree networks. Different failure modes are considered. Results demonstrate the effectiveness of the proposal. Index Termsomplex Networks Self-organization Peer-to-Peeromplex Networks Self-organization Peer-to-PeerC