Ant colony algorithm-based adaptive routing method and system in data center network

The invention discloses a self-adaptive routing method and system based on an ant colony algorithm in a data center network, and the method comprises the steps: recognizing a flow where a new data packet is located as a long flow or a short flow after the new data packet reaches a switch; adopting an ant colony algorithm to select a next node, and obtaining a path from the new data packet to a destination node through each iterative operation; and selecting an optimal path according to the classification of the long streams and the short streams. Furthermore, according to classification of the long streams and the short streams, influence factors epsilon and theta are set, the link with the lowest bandwidth utilization rate is selected for the long streams, and the link with the lowest transmission delay is selected for the short streams. According to the technical scheme of the invention, transmission requirements of different types of traffic are fully considered, especially for heterogeneous traffic, the m