JPH0451625A - Fault segmenting system - Google Patents

Abstract

PURPOSE:To prevent a data transfer source device which is normally operating from being detached from a data exchange system by judging a fault device by means of the fault detection supervisory of the data transfer source device and the supervisory of a data transfer destination at that time and detaching the fault generated device from a system network. CONSTITUTION:The number of faults detected with the data transfer source devices 1-3 is counted for respective data transfer source devices 1-3, and the number of the faults in the data transfer source devices 1-3 and the data transfer destination devices 4-6 during transmission is counted for respective data transfer destination devices 4-6 when the faults are detected. Then, the data transfer destination devices 1-3 or the data transfer destination devices 4-6 counted by exceeding the prescribed number of times within previously decided prescribed time are set to be the fault devices and are detached from a system network. Thus, the data transfer source devices 1-3 detecting the fault are prevented from being detached from the system network even if the fault is in the data transfer destination devices 4-6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for isolating a fault generating device in an electronic switching system.

[Conventional technology]

Conventionally, in this type of fault isolation method, if a fault is detected a predetermined number of times within a predetermined time during data transfer, the device that detected the fault is disconnected from the system network as a fixed fault6. Problems to be Solved] In the conventional fault isolation method described above, if a fault is detected a predetermined number of times within a predetermined time period during data transfer, the device that detected the fault is separated from the system as the faulty device. Therefore, even if the data transfer destination device fails, the data transfer source device that detects the failure is disconnected from the system network.

An object of the present invention is to provide a fault isolation method that determines a faulty device through II damage detection monitoring and data transfer destination damage detection monitoring, and isolates the faulty device from the system network.

[Means to solve the problem]

The fault isolation method of the present invention is applied during data transfer in a data exchange system in which a plurality of data transfer source devices and data transfer destination devices housed in an electronic exchange are connected to each other via a transmission path to transmit data signals. The number of failures detected by the data transfer source device is counted for each data transfer source device, and the number of failures of the data transfer destination device during transmission with the data transfer source device when a failure is detected is counted for each data transfer destination device. However, the data transfer source device or the data transfer destination device, which has been counted more than a predetermined number of times within a predetermined time, is separated from the system network as a failed device.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 1 shows a data transfer source device 1.2.3, a data transfer destination device 4, 5.6, and a failure detection monitoring timer 11, 12.13., which monitors the number of failures detected by the data transfer source device.
a transfer destination monitoring timer 14 for monitoring a data transfer destination device that was in communication with the data transfer source device when the detected failure was detected;
It is composed of a fault detection and determination control section 1 consisting of 15 and 16, a transmission data line 17, and a reception data line 18.

Here, an example will be described in which a failure occurs when data is transferred from the data transfer source device 1.2.3 to the data transfer destination device 5.

When the data transfer source device 1 first detects a failure during data transfer from the data transfer source device 1 to the data transfer destination device 5,
The data transfer source device 1 reports to the fault determination control unit 10 that a fault has been detected during communication with the data transfer destination device 5. Fault determination control unit 1 that receives a fault report from data transfer source device 1
0 updates the fault detection monitoring counter 11 that monitors a fault in the data transfer source bag rIt1 and the transfer destination monitoring counter 15 that monitors a fault in the data transfer destination device 5.

Next, when the data transfer source device 2 detects a failure during data transfer from the data transfer source device 2 to the data transfer destination device 5, the data transfer source device 2 detects the failure while communicating with the data transfer destination device 5. Report to the determination control unit 10. The failure determination control unit 10 that has received the failure report updates the failure detection monitoring counter 12 that monitors failures in the data transfer source device 2 and the transfer destination counter 15 that monitors failures in the data transfer destination device 5.

Similarly, when a failure is detected during communication from the data transfer source device 3 to the data transfer destination device, the failure determination control unit 10 controls the failure detection monitoring counter 13 that monitors the failure of the data transfer source device 3 and the data transfer destination device. The transfer destination monitoring timer 15 that monitors the failure of No. 5 is updated. In this way, data transfer source device 1
, 2.3, failure detection monitoring counters 11, 12.
13 are each updated once, which means that the transfer destination monitoring counter 15 corresponding to the data transfer destination device 5 has been updated three times.

Here, the number of failure detections within a predetermined period of time is, for example, 2.
Since the data transfer destination monitoring counter 15 has been updated three times, the data transfer destination device 5 corresponding to this transfer destination monitoring counter 15 is regarded as a failed device and is separated from the system network.

〔Effect of the invention〕

As explained above, the present invention determines a faulty device by monitoring the data transfer source device for fault detection and monitoring the data transfer destination at that time, and disconnects the faulty device from the system network.
A normally operating data transfer source device that has detected a fault at a data transfer destination will not be separated from the data exchange system as a failed device, and a highly reliable data exchange system can be constructed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1.2.3...Data transfer source device, 4,5.6...
Data transfer destination device, 11, 12.13... Failure detection monitoring timer, 14, 15.16... Transfer destination monitoring timer,
17... Sending data line, 18... Receiving data line.

Claims (1)

[Claims] A failure detected by the data transfer source device during data transfer in a data exchange system in which multiple data transfer source devices and data transfer destination devices housed in an electronic exchange are interconnected via a transmission path to transmit data signals. The number of failures is counted for each data transfer source device, and when a failure is detected, the number of failures of the data transfer destination device that is transmitting with the data transfer source device is counted for each data transfer destination device, and the number of failures is counted for each data transfer destination device. A fault isolation method characterized in that the data transfer source device or the data transfer destination device, which has been counted in excess of the number of times, is separated from the system network as a faulty device.