Traffic Orchestration in Data Center Network Based on Software-Defined Networking Technology

Abstract

This paper addresses the issues of traffic orchestration in Data Center Networks (DCN) using Software-Defined Networking (SDN). A generalized structure of a Traffic Engineering (TE) system in DCN using SDN is given. The features analysis of SDN organization and operation which allows increasing the efficiency of DCN is provided. The expediency of traffic design in DCN based on multi-path routing is given. A method of traffic orchestrating is proposed, which simplifies the traffic reconfiguration procedure and ensures the network load balance due to the centralized approach of generating routing information in SDN controller and using multi-path routing. The routing information organization performed by the wave routing algorithm, in this case, the paths are being created from all intermediate nodes to the end node. A method for centralized organization of the route information is proposed, which allows avoiding re-organization of route information for previously created sections of the route. The procedure and an example of multi-path routing tables organization are given in this paper. The results of traffic orchestration modeling process with network load change are presented. It is noted from simulation results, that the traffic reconfiguration of the route does not affect its metric.