Network fault detection method, apparatus and system

Abstract

An embodiment of the invention discloses a detection method of network failure, comprising: selecting a Level II exchange unit according to an idle output port of a Level I exchange unit that is the site of any specific path and an idle input port of a Level III exchange unit that is the site of any specific path, the idle output port of the Level I exchange unit that is the site of a test input port and the idle input port of the Level III exchange unit that is the site of a test output port; closing the corresponding switches in symmetrical network and building a test path according to the test input port, the selected Level II exchange unit, the Level I exchange unit that is the site of the specific path, the Level II exchange unit, the Level III exchange unit and the test output port; and detecting the switches on the test path to see whether fault exists. The invention also provides a device and a system for detecting network failure, realizing the fault detection to all switches in the whole CLOS network, and overcoming the defects of great time and labor input when switching test interfaces manually and costly undertaking.

Description

technical field [0001] The present invention relates to the communication field, in particular to a network fault detection method, device and system. Background technique [0002] The CLOS network was proposed by Charles Clos in 1953. A typical CLOS network is a three-level symmetrical network, such as figure 1 shown. Three levels: stage1, stage2, stage3, symmetrical: the number of incoming lines = the number of outgoing lines, the total number of incoming ports and the total number of outgoing ports are both N. figure 1 The direction is marked in , but in fact there is no direction, it only indicates the connection relationship. n indicates the number of input ports of Stage1 and the number of output ports of Stage3; m indicates the number of output ports of Stage1 and the number of input ports of Stage3; r indicates the number of input and output ports of Stage2. It can be seen that Stage1 has r n*m switching units, Stage2 has m r*r switching units, and Stage3 has r m*...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a network fault detection method, device and system, to overcome the existing manual testing of the CLOS network by using related testing instruments, which not only requires the use of special testing equipment, but also requires Switching the test interface manually takes a lot of time and manpower, and the cost is very high.

Images