Patent ID: 9014009
Filing Date: 2015-04-21
Classification: H04L

Abstract:
1. A failed link locating method, comprising: obtaining an alarm raising time; comparing a pre-failure link state database and a post-failure link state database that are corresponding to the alarm raising time to determine a failed link; determining, in an entire-network path vector matrix, an affected edge device corresponding to the failed link and a device interface of the affected edge device; and sending an identifier of the failed link, an identifier of the affected edge device, and an identifier of the device interface of the affected edge device to an alarm root cause analyzing device; wherein the comparing the pre-failure link state database and the post-failure link state database comprises comparing a state of each link in the pre-failure link state database corresponding to the stored alarm raising time and the state of each link in the post-failure link state database corresponding to the stored alarm raising time, and determining a link in invalid state as the failed link.