Method for minimizing IP over WDM network energy consumption

The application provides two methods for minimizing IP over WDM network energy consumption. One method comprises a step of establishing a mixed integral linear planning model based on anal-optical switching strategy and a router interface card sleep strategy in a small-scale network model and in a large-scale network model, and based on a heuristic algorithm of the two strategies, the mixed integral linear planning model including a target function for minimizing the general network energy consumption in one day and constraint conditions; and a step of determining values of unknown parameters and variables in the target function upon the minimal generation network energy consumption in one day through the mixed integral linear planning module so as to determine network configuration which enables the minimal IP over WDM network energy consumption. The application provides the method which determines the network configuration that enables the minimal IP over WDM network energy consumption through the all-optical switching strategy and the router interface card sleep strategy, and thus the energy consumption of the IP over WDM network in which the network configuration is adopted is substantially reduced.