Abstract
To solve the performance bottleneck of tree-based structure and single point failure issues of data center networks, this thesis proposes an undirected double-loop data center network structure, which makes use of the cyclic graph's excellent properties on the node number and path length to achieve high performance, good scalability and fault-tolerance. Main issues include the method to build the minimum distance diagram of undirected double-loop networks, the algorithm to calculate its diameter, and the step to build optimal undirected double-loop networks, etc. We prove that the diameter of the undirected double-loop network is equal to the height of its tree structure, and propose a rapid algorithm to calculate the diameter, and find that there are lots of optimal undirected double-loop networks in some infinite clusters. Finally, the lower bound proposed by Yebra is verified by experiment. According to these results above, the transmission performance of undirected double-loop data center networks will be optimized.
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