Abstract
In this paper, we propose and substantiate organization of modern data center networks (DCN) with Fat Tree topology based on software-configurable network technology (SDN). In order to increase efficiency of traffic engineering in DCN with Fat Tree topology, we propose to construct a set of disjoint paths. We also propose an improved deep search algorithm that enables us to reduce time needed for constructing such a set due to taking into consideration self-similarity of DCN topology. Main difference of this algorithm, compared to known analogies, lies in possibility to construct a maximal set of optimal disjoint paths. Applying SDN technology enabled us to increase efficiency of functioning of large-scale DCNs. Central SDN controller possesses full information about paths and trees that generated them. This enables us to optimize the paths according to specified metrics in the process of their construction. We show the application of the proposed method with an example of constructing a set of disjoint paths in DCN.
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