Simulation of a P2P Application Using OverSim

OverSim is a new open-source overlay network simulation framework based on the discrete event simulation system OMNeT++. OverSim includes several structured and unstructured P2P (peer-to-peer) protocols. It also includes an underlay model derived from the INET framework of OMNeT++, which includes simulation models of all network layers from the MAC layer onwards. For this and other reasons, this framework overcomes several drawbacks of existing P2P simulators, and it is considered one of the most powerful tools for the research community. This paper contains a very low-level description of the simulation of a particular P2P application using OverSim. It also contains information about how to use it in general P2P simulations.The aim is to provide an introduction to this powerful tool for the workers in the field of P2P networking.