| 摘要 |
Embodiments of the present invention provide a fault detection method and system. The method includes: sending port scan packets based on at least two port pairs to a destination end, where each port pair includes a source port number and a destination port number and corresponds to a path between a source end and the destination end; receiving a response packet sent by the destination end, where the response packet carries an unreceived port pair that is determined by the destination end based on the port scan packets; and based on the port pair carried by the response packet, determining a faulty path. Based on technical solutions provided by the embodiments of the present invention, port scan packets are sent based on multiple port pairs, so that the port scan packets can reach the destination end through multiple paths, so as to detect multiple paths between the source end and the destination end. Compared with the prior art where only one path can be detected, the present invention can implement more efficient fault detection and accurately find existence of a fault in a network. |
