公开(公告)号：US20170099179A1

公开(公告)日：2017-04-06

申请号：US15071241

申请日：2016-03-16

Applicant: Hitachi, Ltd.

Inventor： Atsushi IWAMURA ,  Yoshiko YASUDA ,  Hideaki TSUSHIMA ,  Hideaki ISHII ,  Atsushi KOMATSUZAWA

IPC: H04L12/24 ,  H04L12/26

CPC classification number: H04L41/0631 ,  H04L41/0659 ,  H04L43/08

Abstract: The failure isolation method includes: a first step of performing a predetermined action for the monitoring target, collecting a failure event which is a result of the action, applying the failure event to a failure cause analysis rule, and narrowing down the root cause events together with certainty factors; a second step of determining whether the root cause event and the certainty factor narrowed down in the first step satisfy a predetermined requirement and whether the narrowing-down has been completed; and a third step of, when it is determined in the second step that the narrowing-down has not been completed, performing a predetermined additional action for the monitoring target, collecting an additional failure event which is a result of the additional action, applying the additional failure event to the failure cause analysis rule, and narrowing down the root cause events together with the certainty factors.