Ms. Shruthi Harve Profile

Shruthi Harve

at Univ of California, Davis

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Proceedings Article | 1 December 2009 Paper

Optimal multicasting in a multi-line-rate ethernet-over-WDM network

Shruthi Harve, Marwan Batayneh, Biswanath Mukherjee

Proceedings Volume 7632, 76320T (2009) https://doi.org/10.1117/12.852154

KEYWORDS: Transceivers, Silver, Switches, Local area networks, Mathematical modeling, Optical fibers, Wavelength division multiplexing, Telecommunications, Internet, Light

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Ethernet is the dominant transport technology for Local Area Networks. Efforts are now under way to use carrier-grade Ethernet in backbone networks of different service providers. With the advent of applications such as IPTV and Videoon- Demand, there is need for techniques to route multicast traffic over the Ethernet backbone networks. Here, we address the problem of Routing and Wavelength Assignment (RWA) of a set of multicast requests in a Multi-Line-Rate Ethernet backbone network with the objective of minimizing the cost of setting up the network, in terms of the Service Provider's Capital Expenditure (CAPEX). We present an Auxiliary Graph based heuristic algorithm that routes each multicast request on a light-tree structure, and assigns minimum cost wavelengths along the route. We compare the properties of the algorithm to the optimal solution given by a mathematical model formulated as an Integer Linear Program (ILP), and show that they compare very well. We also find that the algorithm is most cost-effective when the incoming requests are processed in descending order of their bandwidth requirements.

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