A Synchronous Multicast Application for Asymmetric Intra-campus Networks: Definition, Analysis and Evaluation
In this paper, we propose and analyze an application called SOMA (SynchrOnous Multicast Application) which offers multicast file transfer service in an asymmetric intra-campus environment. For efficient bandwidth utilization, SOMA uses IP multicasting. Since TCP cannot be used in multicast situations, we also propose a transport protocol involving a flow control algorithm. This algorithm adapts the protocol window size and the overall application transfer rate to the minimum network capacity, allowing synchronism and reacting quickly when congestion arises at any router. The protocol behavior has been intensively tested in a lab, using a mixture of wired and wireless networks. The paper also explains how to capture and post-process SOMA network traffic. In addition, we develop a mathematical model to validate the most important protocol parameters. The methodology employed to define, analyze and evaluate this protocol is, indeed, another contribution and can be easily extended to other multicast protocols.
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- 3.Kirschberg, J., Delgado, M., Ribes, S.: RCCMP: A TCP-Friendly Reliable Multicast Transport Protocol. In: Proceedings of the 10th ISCC, La Manga, Spain, pp. 730–738 (June 2005)Google Scholar
- 4.Manzanares-Lopez, P., Sanchez-Aarnoutse, J.C., Malgosa-Sanahuja, J., Garcia-Haro, J.: Empirical and Analytical Study of a Multicast Synchronous Transport Protocol for Intra-Campus Replications Services. In: Proceedings of the International Conference on Communications (ICC 2004), Paris (June 2004)Google Scholar
- 7.McCanne, S., Jacobson, V.: The BSD Packet Filter: A New Architecture for User-level Packet Capture. In: The 1993 Winter USENIX conference, San Diego, CA, pp. 259–269 (January 1993)Google Scholar