Data center network topology design method based on combination design

The invention discloses a data center network topology design method based on combination design, which is used for designing a tree topology structure with different performance advantages. For example, a tree topology structure with more servers and a tree topology structure with stronger fault-tolerant capability can be supported, wherein the structure of the tree topology is characterized in that the tree topology is composed of three layers of switches and one layer of server; wherein the three-layer switch is sequentially called as a core switch, a convergence switch and an edge switch from top to bottom, the core switch is only connected with the convergence switch, and each server is only connected with one edge switch; meanwhile, the aggregation switch and the edge switch are divided into a plurality of racks, and the edge switch is only connected with the aggregation switch in the same rack. It needs to be pointed out that the structural characteristics of the layers and themultiple racks are key re