Patent ID: 7746788

Claim:
A traffic information aggregating apparatus in a network system including a network apparatus to export traffic information, the traffic information aggregating apparatus to aggregate the traffic information from the network apparatus to generate aggregated data and to manage the aggregated data, and a monitor server to monitor traffic of the network apparatus based on the aggregated data exported from the traffic information aggregating apparatus, the traffic information aggregating apparatus comprising: an interface to communicate with the network apparatus and the monitor server; an aggregated data management table to store aggregated data and accumulated data of the aggregated data correspondingly to an aggregation identifier; and a processing unit, wherein the processing unit receives the traffic information from the network apparatus through the interface, aggregates the traffic information received in an aggregation time specified in advance to generate the aggregated data, stores the aggregated data into the aggregated data management table correspondingly to the aggregation identifier, determines, at an interval of the aggregation time, whether a difference between the stored aggregated data and a base value that is based on previously accumulated exported data is within or exceeds a previously determined range for comparing to the difference, accumulates, in a case where the difference is within the range, the aggregated data to the corresponding accumulated data in the aggregated data management table and resets the aggregated data, and exports, in a case where the difference exceeds the range, at least one of the aggregated data and the accumulated data of the aggregated data management table to the monitor server.