JPH05292067A - Redundancy configuration control method - Google Patents

Abstract

PURPOSE:To accurately and readily discriminate a fault position in a short time by specifying a portion where abnormality occurs based on the diagnostic result of internal abnormality diagnosis and the result of inter-office abnormal diagnosis. CONSTITUTION:The communication is performed between terminals 1 and 2 and the communication is carried out through 1st interface sections 1a and 2a. When the abnormality is detected in the 1st interface section 2a of the terminal 2, an opposite alarm signal Al is sent from the terminal 2 to the terminal equipment 1. In the terminal 2, an interface section used from the 1st interface section 2a is switched to the 2nd interface section 2b. The switching is carried out by a switching section 2c. On the other hand, the terminal 1 switches the switching section 1c by triggering an opposite alarm signal Al sent from the terminal 2, thereby changing the used interface section from 1a to 1b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a redundant configuration control method in a network system.

[0002]

2. Description of the Related Art FIG. 9 is a block diagram showing a configuration of a network having a conventional redundant configuration control system. In the figure, 51 is one terminating device and 51a is a terminating device 51.
In FIG. 1, 51b is a second interface section provided as a spare of the first interface section 51a, and 51c is a switching section for switching between the first interface section 51a and the second interface section 51b.

52 is the other terminating device of this network, 52a is the first interface part of the terminating device 52, 52b is the second interface part provided as a spare of the second interface part 52a, and 52c is the first interface part 52a. And a second interface unit 52b. 53 is a transmission line between the terminating device 51 and the terminating device 52.

Next, the operation will be described.

In this network, communication is performed between the terminating device 51 and the terminating device 52, and the communication is performed via the respective first interface units 51a and 52a. Now, the first interface unit 52 of the terminating device 52
When an abnormality is detected in a, the terminating device 52 sends the game alarm signal A1 to the terminating device 51.

In the terminating device 52, the interface unit to be used is switched from the first interface unit 52a to the second interface unit 52b. This switching is performed by the switching unit 52c.

On the other hand, in the terminating device 51, the switching unit 51c is switched by using the game alarm signal A1 sent from the terminating device 52 as a trigger, and the interface unit to be used is changed from the first interface unit 51a to the second interface unit 51b. To do.

The operation described above is the first operation of the terminating device 51.
The same applies when an abnormality is detected in the interface unit 51a.

As described above, when an abnormality is detected in the interface unit of the terminating device 51 or the interface unit of the terminating device 52, the interface unit currently used by the respective switching units is replaced by a spare interface as shown in FIG. The communication between the opposite stations is maintained by switching to the department.

[0010]

The conventional redundant configuration control system is constructed as described above, and since there is no system for judging where a failure has occurred, the failure location can be identified accurately. However, there are problems such as experience and knowledge, and time and labor for making the judgment.

As described above, when an abnormality occurs, it is necessary to identify the location of the failure, and to replace the card at the location of the failure, and many improvements are desired in performing these series of operations. There was a problem.

The inventions of claims 1 and 2 have been made in order to solve the above-mentioned problems, and do not rely on a skilled person who has many years of experience and knowledge to prevent an abnormality from occurring. It is an object of the present invention to provide a redundant configuration control method capable of accurately identifying a location in a short time.

[0013]

In the redundant configuration control method according to the invention of claim 1, when an abnormality is detected between the stations, the station which has detected the abnormality switches the line to the spare interface and the opposite interface. The abnormal detection signal is output to the station, and at the station to which the abnormal detection signal is sent, the line is switched to the backup interface based on the abnormal detection signal, and then the internal abnormality diagnosis of the internal interface of each station is performed. One station sends a loopback command to the opposite station to perform inter-station abnormality diagnosis between the opposite stations including the interface and transmission path, and based on the above internal abnormality diagnosis result and inter-station abnormality diagnosis result. It is intended to identify the location of the abnormality.

In the redundant configuration control method according to the second aspect of the present invention, when an abnormality is detected in the redundantly configured function block device currently in use, the function block device is switched to a spare function block device, and then a specific bus or spare Using the same bus that is connected to and switched to the function block device, the function block device in which the abnormality is detected is diagnosed, and the abnormal part of the function block device in which the abnormality has occurred is identified based on the diagnosis result. It was done like this.

[0015]

In the redundant configuration control method according to the first aspect of the present invention, when an abnormality is detected between the stations, the station detecting the abnormality first switches the line to the backup interface and outputs the abnormality detection signal to the opposite station. To do. At the station to which the abnormality detection signal is sent, the line is switched to the backup interface based on the abnormality detection signal. Then, the internal abnormality diagnosis of the interface before switching is performed in each station. In addition, one station sends a loopback command to the opposite station, performs inter-station abnormality diagnosis between the opposite stations including the interface and transmission line before switching, and diagnoses the above internal abnormality diagnosis result and inter-station abnormality diagnosis. The location of the abnormality is identified based on the result.

In the redundant configuration control method according to the second aspect of the present invention, when an abnormality is detected in the currently used functional block device of the information processing system having the redundantly configured functional block device, the spare functional block device is first detected. Switch to. Then, the specific block for diagnosing the abnormality or the bus connected to the spare functional block unit to be switched is used to diagnose the functional block unit in which the abnormality is detected by a predetermined procedure. Then, based on the result of the diagnosis, which part of the functional block device the abnormal part is located is specified.

[0017]

EXAMPLES Example 1. An embodiment of the invention of claim 1 will be described below with reference to the drawings. In FIG. 1, 1 is one terminating device, 1a is a first interface unit in the terminating device 1, 1b is a second interface unit provided as a backup of the first interface unit 1a, and 1c is a first interface unit.
Interface unit 1a and second interface unit 1b
It is a switching unit for using either one of the above.

2 is the other terminating device of this network,
2a is a first interface unit in the terminal device 2, 2
Reference numeral b is a second interface portion provided as a spare of the second interface portion 2a, and reference numeral 2c is a switching portion for switching between the first interface portion 2a and the second interface portion 2b. Reference numeral 3 is a transmission line between the terminating device 1 and the terminating device 2.

FIG. 2 is a block diagram showing the configuration of the interface section in the terminating devices 1 and 2. In the figure,
Reference numeral 5 is an internal bus, 6 is an internal bus 5, and a test pattern generator 7
A first selector switch section for switching between and, 8 is a first amplifier section,
Reference numeral 9 is a transmission block, 10 is a second changeover switch unit for switching between the transmission amplifier 13 and the intra-station short-circuit line 12, and 11 is a transmission line through which a signal is transmitted.

Reference numeral 14 is a transmission line through which a signal is sent, and 15
Is a receiving amplifier that amplifies a signal sent through the transmission line 14, 16 is a third changeover switch unit that switches between the receiving amplifier 15 and the intra-station short-circuit line 12, 17 is a receiving block, and 18 is a second amplifying unit , 19 is a fourth changeover switch unit for supplying the output of the second amplification unit 18 to the test pattern comparison unit 21 as necessary, 20 is an intra-office bus, and 22 is an abnormality detection unit.

Next, the operation will be described.

In this network, communication is performed between the terminating device 1 and the terminating device 2, and communication is performed via the respective first interface units 1a and 2a.

Now, when an abnormality is detected in the first interface section 2a of the terminal device 2, the game alarm signal A1
Is sent from the terminating device 2 to the terminating device 1.

In the terminating device 2, the interface unit to be used is switched from the first interface unit 2a to the second interface unit 2b. This switching is performed by the switching unit 2c.

On the other hand, in the terminating device 1, the switching unit 1c is triggered by the game warning signal A1 sent from the terminating device 2.
And the interface unit to be used is changed from the first interface unit 1a to the second interface unit 1b.

The operation described above is the same even when an abnormality is detected in the first interface section 2a of the terminating device 1.

Next, an internal abnormality diagnosis and an inter-station abnormality diagnosis for identifying a fault location are performed for each of the terminating devices 1 and 2.

FIG. 3A shows internal abnormality diagnosis routes 1d and 2d which are performed for the respective interface units 1a and 2a when an abnormality occurs in the interface unit of the terminating device 1 or the terminating device 2. There is.

This internal abnormality diagnosis is performed based on the in-station test program shown in the flowchart of FIG.

That is, when an abnormality is detected and the interface section is switched to the spare interface section (steps S1 and S2), the test is started (step S3). In this test, in the in-card loop mode, the first changeover switch unit 6, the second changeover switch unit 10, the third changeover switch unit 16 and the fourth changeover switch unit 19 shown in FIG. The test pattern generated in step 1 is supplied to each block of the first amplification section 8, the transmission block 9, the reception block 17, and the second amplification section 18,
It is performed by comparing the test pattern after passing through each of these blocks with the test pattern generated by the test pattern generation unit 7. This comparison is performed by the test pattern comparison unit 21.

Returning to FIG. 4, the comparison results are stored in the storage devices provided in the test pattern comparison unit 21 (step S4). Next, the comparison results stored in the storage device are collected (step S5) and further displayed by the LED or the like (step S6). In this way, when the internal abnormality diagnosis is completed in the terminal device of each station, the inter-station abnormality diagnosis is performed next.

In the inter-station abnormality diagnosis, as shown in FIG. 3B, a loopback command is sent from the terminating device 2 to the terminating device 1, a transmission system test route TR is established, and a remote loopback check is performed.

At this time, the first changeover switch unit 6 and the fourth changeover switch unit 19 of the terminating device 2 and the fourth changeover unit of the terminating device 1 shown in FIG. The changeover switch unit 19 and the first changeover switch unit 6 are switched at high speed, and the test pattern generated by the test pattern generation unit 7 of the terminating device 2 is sent to the terminating device 1 by using an empty channel on the transmission path or a slot of the control bit area. Then, the terminal device 2 is looped back so that the returned test pattern is received, and the received test pattern is compared with the test pattern generated by the test pattern generation unit 7.

The comparison result is stored in the storage device provided in the test pattern comparison unit 21 of the terminal device 2 together with the comparison result in the internal abnormality diagnosis. Further, the comparison results stored in the storage device are read out, collected, and displayed by the LED or the like.

Therefore, when there is no failure in the station, it can be determined that there is a failure point in the opposite station or the transmission path, and when there is no failure in the opposite station, the failure occurs in the transmission path. You can judge that you are doing. In this way, the failure location can be easily specified.

Example 2. FIG. 6 is a block diagram showing the configuration of an embodiment of the invention of claim 2. In FIG.

In the figure, 31 is a test controller. The test control unit 31 includes a memory that stores a failure location identifying program for identifying a failure location. 32
Is a test bus used to identify the fault location, 33
Is a data bus, and 34 is a redundantly configured interface unit. The interface unit 34 includes a spare second interface unit 34b in addition to the first interface unit 34a. 35 is the first interface unit 3
4a or the second interface unit 34b is a switching unit for selecting and switching the connection between the data bus 33. 36 is the first interface section 34a or the second
A switching unit for switching the connection of the interface unit 34b to the external device.

Next, the operation will be described with reference to FIG.

When a failure occurs while data is being input / output using the first interface section 34a and an abnormality occurs in the input / output data, this abnormality is detected by the test control section 31.

As a result, the test control section 31 switches the interface section connected to the data bus 33 from the first interface section 34a to the second interface section. At the same time, the switching unit 36 switches so that the second interface unit is connected to the external device.

Next, test routes R1, R2, R via the test bus 32 to the first interface section 34a.
Set 3 and R4, and perform the abnormality detection test sequentially. This abnormality detection test is performed by the test control unit 31 based on the fault location identification program. Furthermore, the test control unit 31 displays the results of the abnormality detection test performed by the test routes R1, R2, R3, and R4 on a display device such as an LED.

FIG. 8 is a flowchart showing the fault location specifying program.

In this embodiment, the interface section is constructed redundantly, but not limited to the interface section, important functional block sections may be constructed redundantly.

[0044]

As described above, according to the first aspect of the present invention, the location of the abnormality is identified based on the diagnosis result of the internal abnormality diagnosis and the diagnosis result of the inter-station abnormality diagnosis. There is an effect that a failure location can be accurately determined and specified easily and in a short time with respect to the occurrence of an abnormality without relying on a skilled person having experience and knowledge.

According to the invention of claim 2, in the information processing system having the redundant function block device, when an abnormality is detected in the function block device currently in use, the function block device is switched to the spare function block device. , The function block device in which the abnormality is detected is diagnosed, and the abnormal portion of the function block device in which the abnormality has occurred is specified based on the result of the diagnosis, so rely on a skilled person who has many years of experience and knowledge. In other words, there is an effect that an abnormal place can be accurately determined and easily identified and specified in a short time when an abnormality occurs.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a terminating device between opposing stations.

FIG. 2 is a block diagram showing a configuration of an interface unit.

FIG. 3 is a block diagram for explaining internal abnormality diagnosis and inter-station abnormality diagnosis.

FIG. 4 is a flowchart for explaining the operation of internal abnormality diagnosis.

FIG. 5 is a block diagram for explaining internal abnormality diagnosis.

FIG. 6 is a block diagram showing a configuration of an embodiment of the invention of claim 2;

FIG. 7 is a block diagram for explaining the operation of an embodiment of the invention of claim 2;

FIG. 8 is a flowchart showing a fault location identifying program.

FIG. 9 is a block diagram showing a configuration of a network having a conventional redundant configuration control system.

FIG. 10 is a block diagram showing a state in which the interface unit of the terminating device is switched from the first interface unit to the spare second interface unit.

[Explanation of Codes] 1, 2 Terminator 1a, 2a, 34a 1st interface section 1b, 2b, 34b 2nd interface section 3 Transmission line A1 Station alarm signal 32 Test bus 33 Data bus

Claims (2)

[Claims] 1. When an anomaly is detected between opposing stations having redundant interface units of a network system, the station that detects the anomaly switches the line to a spare interface while the anomaly is detected by the opposing station. In the station that outputs the signal and the abnormality detection signal is sent, the line is switched to the backup interface based on the abnormality detection signal, then each station performs internal abnormality diagnosis of the interface before switching in its own station, In addition, one station sends a loopback command to the opposite station, performs inter-station abnormality diagnosis between the opposite stations including the transmission path through the interface before switching, and diagnoses the above internal abnormality diagnosis and the inter-station abnormality. A redundant configuration control method for identifying a location where an abnormality has occurred based on the diagnosis result of the diagnosis. 2. An information processing system having a redundantly configured functional block device, when an abnormality is detected in a functional block device currently in use, switching to a spare functional block device and then specifying for diagnosing the abnormality. Of the functional block device in which the abnormality is detected by using the above bus or the bus connected to the spare functional block device that can be switched, and the abnormal portion of the functional block device in which the abnormality occurs is identified based on the diagnosis result. Redundant configuration control method.