Nowadays a lot of organizations work and act based on network systems. Because delay of detection and recovery of network failure causes degradation of faith and profits of the organization, the necessity and importance of stable network management and operation with high availability are increased. However, to realize the efficient support of the management task of the administrators, various knowledge and information with respect to the managed network have to be utilized and integrated in the system. In this paper, we propose the practical design method and implementation of a network management system based on activated knowledge resource in a distributed network environment. The effectiveness of our system is evaluated by experiments conducted on an experimental network environment. The activated knowledge resource oriented design is shown to reduce the burden for administrators by the support to utilize and manage various information and knowledge in an autonomic way.