MONITOR SYSTEM AND MONITOR INFORMATION ACQUISITION METHOD

PROBLEM TO BE SOLVED: To reduce a processing load accompanied by the extraction of device state information from a network device NE to be monitored.SOLUTION: An NE management part determines whether or not a search result corresponding to search conditions, the search result searched within a predetermined time, and the search result corresponding to each search item included in the search conditions is stored in a storage part (step S3), and makes a "state acquisition request" to a network device as for the search item whose corresponding search result is not stored to acquire device state information corresponding to the search item from the network device (step S4), and generates the search result corresponding to the requested search conditions from the search result stored in the storage part (step S6) and the device state information acquired from the network device, and returns a search response as the search result in response to the search request (step S7).