| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that, in a conventional system, operation information of a network device cannot be efficiently managed with the accuracy maintained. <P>SOLUTION: A management device stores a first table storing information on time when operation information is first obtained and information on time when operation information is last obtained for each identifier, and a third table storing information on time when the operation information for each identifier is obtained from a network device and the operation information for each identifier as history information. When obtaining new operation information, the management device performs update by storing operation information with a change in the third table without storing information relating to an identifier with no change. Even when information relating to an identifier whose operation information has been obtained is not stored in the third table during an aggregation period, the management device includes the information relating to the identifier in an aggregation result at the time of aggregating the operation information. <P>COPYRIGHT: (C)2012,JPO&INPIT |
