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Emerging applications require datacenter networks to provide dynamic and reconfigurable services in order to adapt to the dynamicity of cloud traffic, as well as to maintain the optimality of resource utilization. In this paper, we demonstrate novel re-optimization design techniques for realizing agile and seamless service. Our main contribution is a novel integer linear programming (ILP) based approach...
We introduce ILP-based wavelength defragmentation approach which enables maximum spectrum efficiency. This approach can be enhanced to consider migration process with a bridge and roll manner. Through simulation, we demonstrate the effectiveness of our approach from the viewpoint of resource efficiency and migration process in defragmentation.
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