J. Sum,∗
Gnutella, network connectedness, peer-to-peer, simulation
This paper presents a model to generate and study Gnutella topology from an original point of view. Instead of using characteristics of the final topology, the network is constructively created from scratch and its connectedness is studied by simulation. As the resultant topology has the same node degree distribution as what has been measured from the true Gnutella and a virus outbreak simulation has shown that the network is not connected, it is argued that the true Gnutella might not be a connected network. To improve the connected ability of the model, a modification on the connection mechanism is proposed and the topological change of the network is studied by simulation. Although the node degree distribution of the resultant topology is deviated from the measurement results, this new connection mechanism can indeed improve the connectedness of the network that is confirmed by the virus outbreak simulation.
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