| 摘要 |
PROBLEM TO BE SOLVED: To keep synchronization of shared data.SOLUTION: First and second network management apparatuses store first shared data concerned with a network configuration apparatus, and the network configuration apparatus stores second shared data concerned with its own apparatus and stores synchronous state information of the first shared data and the second shared data. The first network management apparatus transmits a synchronous state confirmation request to the network configuration apparatus when receiving an updating request of the second shared data, and when a processing continuation request is returned from the network configuration apparatus, updates the first shared data and transmits an updating request of the second shared data to the network configuration apparatus. The network configuration apparatus receives the synchronous state confirmation request, and when the synchronous state information corresponding to the first network management apparatus has been already synchronized, returns the processing continuation request, and when receiving an updating request of the second shared data, transmits updating completion notification to the first network management apparatus after updating the second shared data, sets synchronous state information corresponding to the second network management apparatus to an unsynchronized state, and transmits a request for reflecting the updated second shared data to the first shared data to the second network management apparatus. |
