RVIP: bridging live networks and software virtual networks for large scale network simulation at real time

Authors:
Tingzhen Li;Jiejun Kong;Ping Li;Peng Gong
Affiliations:
Beijing Institute of Technology, Beijing, China;University of Florida, Gainesville, FL, USA;Beijing Institute of Technology, Beijing, China;Beijing Institute of Technology, Beijing, China
Venue:
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Year:
2012

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Abstract

In this work we investigate real-virtual interface pair (RVIP), a new interface system proposed for hybrid network simulation. In the hybrid system, multiple live networks (LNs) and multiple software virtual networks (SVNs) are connected together via standard IP protocols in an arbitrary topology and at real time. RVIP seeks to implement a new Turing-indistinguishable mode so that an LN and its counterpart SVN are indistinguishable in regards to a third-party live node. To realize the new mode, three necessary conditions must be satisfied: (1) All needed changes incurred by introducing an SVN into a live network scenario are put on the simulation's side, RVIP requires that no change is made on any live node; (2) An SVN does not exchange simulation events with LNs, that is, only standard IP protocol interactions between SVN and LN are allowed. (3) Any LN can be dynamically plugged into the hybrid scenario at real time, just like being plugged into an equivalent purely live network. RVIP realizes the mapping between a live IP protocol stack and a virtual IP protocol stack (VIPS) by presenting a progressive series of connection patterns, namely mapping single virtual node to live node, combining LN with SVN and connecting multi-SVNs. Then we can construct more complex hybrid scenarios by combining these patterns. Compared to existing hybrid simulation efforts on NS-3, QualNet and OPNET, RVIP can support hybrid scenarios with multiple SVNs and multiple LNs connected by an arbitrary network topology. Our performance studies show that RVIP provides more efficient support in terms of common metrics such as larger throughput limit and smaller extra latency.