Generally, in order to manage and maintain a network system, it is necessary to carry out a series of operations including assessing the network status, determining the network errors, selecting/approving the countermeasures and applying the countermeasures. In the recent years, since the network systems are becoming complicated and larger in scale, the network operations increasingly require special professional knowledge and effort, thereby imposing heavy workloads on the network administrators. In this paper, we propose and design the AIR-NMS (Active Information Resource architecture based Network Management Support System) for decreasing the network administrators' workloads.