In view of the problems of unclear path identification and unreasonable traffic scheduling in traditional methods, the SDN framework method is used to allocate the shared IP resource management reasonably. According to the principle of SDN architecture, the path is identified in combination with MPLS format. The flow scheduling method is used to solve the problem of excessive exchange information in the identification process, and a traffic task scheduling table is designed. Based on this table, a centralized IP resource allocation scheme is proposed. From the physical point of view, the design concept of superposition network structure is adopted to analyze the flow transmission situation, and the reasonable allocation of IP resource management in logical state is realized according to the result of traffic transmission. Through the experimental comparison results, we can see that the SDN architecture method has the highest accuracy of path identification, which can reach 85%, and has better effect on IP resource management.