NETWORK MONITORING SYSTEM, MONITORING DEVICE AND MONITORED DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce processing addition and traffic and to speed up state grasp of a monitored device by each monitored device generating/holding information on an intensive state which gathers various kinds of state of its own and a monitoring device assigning communication information other than a response for an intensive state collection instruction for issuing to the monitored device and informing the monitoring device of it. SOLUTION: An AND of a mask pattern of a header part of a communication frame received from a transmission device and an intensive state is obtained and its value is written in a state management memory 5. An operation method read out from a state display table 6 is applied to a group intensive state of the group of the state management memory 5 and an intensive state of a transmission device concerned, and they are registered in the state management memory 5 as a new group intensive state. When operation of all the intensive states is completed, a display change request of the intensive state is made of a GUI part 8, data in a received communication frame is analyzed and processing for every reception data is performed.