The global traffic splitting proportion of node vi is shown in Fig. 3. It considers the traffic flows injected into the node, so it is more reasonable than that only uses local traffic splitting Pxi or Pyi (Pxi and Pyi is the local traffic splitting proportion of node vi). The calculation of the adjacency matrix A is shown in row 6 of Algorithm 1. Assume flow f traverses from v1 to v8 in Fig. 2. The local splitting proportion at every node is equivalent in all traversal directions. The original proportion at every node is the sum of the splittingproportions of the flows adjacency matrix is