Maintenance work support device, device, work system, method of collecting transmission / reception data, and program

Abstract

To facilitate collection of transmission / reception data of inter-device communication when an abnormality occurs in a system.SOLUTION: A maintenance work support device is connected to a system including a device having a buffering function of holding transmission and reception data in inter-device communication for a certain period of time, and includes means for detecting an alarm generated in the system, means for instructing the device to stop buffering of the transmission and reception data in the inter-device communication when the alarm is detected, and means for acquiring the transmission and reception data in the inter-device communication from the device.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a maintenance work support device, a device, a work system, a method for collecting transmitted and received data, and a program. [Background technology]

[0002] Patent Document 1 discloses a line logging automatic stop control method in which a system automatically recognizes that a problematic line error has occurred while line logging is being performed and automatically stops logging. More specifically, this line logging automatic stop control method includes a protocol control unit, a line logging processing unit, and logging stop interrupt generating means. When an abnormality occurs, this line logging automatic stop control method automatically stops the collection of line log information by the line logging processing unit in response to an interrupt from the logging stop interrupt generating means. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 1-115244 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to analyze the cause of a system abnormality, it may be necessary to analyze data transmitted between devices immediately before the abnormality occurred. In this regard, the configuration of Patent Document 1 requires that each processing device be provided with a protocol control unit, a line logging processing unit, and a logging stop interrupt generation means. This poses a problem in that it is not possible to collect data transmitted between devices, such as general servers and network devices, that do not have a logging stop interrupt generation means.

[0005] The present disclosure aims to provide a maintenance work support device, equipment, business system, and a method and program for collecting transmitted and received data that can facilitate the collection of transmitted and received data in communication between devices when an abnormality occurs in the system. [Means for solving the problem]

[0006] According to a first aspect, there is provided a maintenance work support device that is connected to a system configured to include a device having a buffering function for retaining transmitted and received data of device-to-device communications for a certain period of time, and that includes: means for detecting an alarm that has occurred in the system; means for instructing the device, upon detecting the alarm, to stop buffering the transmitted and received data of the device-to-device communications; and means for acquiring the transmitted and received data of the device-to-device communications from the device.

[0007] According to a second aspect, there is provided an apparatus having a buffering function for retaining transmission and reception data of device-to-device communications for a certain period of time, a means for stopping buffering of the transmission and reception data of the device-to-device communications in response to a request from a specified maintenance work support device, and a means for transmitting the transmission and reception data of the device-to-device communications to the maintenance work support device.

[0008] According to a third aspect, there is provided a business system including the above-mentioned maintenance business support device and the above-mentioned device.

[0009] According to a fourth aspect, there is provided a method for collecting transmission and reception data of device-to-device communications, in which a maintenance work support device connected to a system configured to include equipment having a buffering function for retaining transmission and reception data of device-to-device communications for a certain period of time, when detecting an alarm occurring in the system, instructs the equipment to stop buffering the transmission and reception data of the device-to-device communications, and acquires the transmission and reception data of the device-to-device communications from the equipment.

[0010] According to a fifth aspect, there is provided a computer program for realizing the functions of the maintenance work support device described above. Specifically, this program causes a computer connected to a system configured to include a device having a buffering function for retaining transmitted and received data of inter-device communication for a certain period of time to execute, when an alarm occurring in the system is detected, a process of instructing the device to stop buffering the transmitted and received data of the inter-device communication, and a process of acquiring the transmitted and received data of the inter-device communication from the device. [Effects of the Invention]

[0011] According to the present disclosure, it is possible to facilitate the collection of transmission and reception data of communication between devices when an abnormality occurs in the system. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram illustrating a configuration of an embodiment of the present disclosure. [Figure 2] FIG. 10 is a diagram for explaining the operation of an embodiment of the present disclosure. [Figure 3] 1 is a flow diagram illustrating the operation of one embodiment of the present disclosure. [Figure 4] FIG. 10 is a diagram for explaining the operation of an embodiment of the present disclosure. [Figure 5] 1 is a diagram illustrating a configuration of a first embodiment of the present disclosure. [Figure 6] FIG. 2 is a functional block diagram illustrating a configuration of a server according to the first embodiment of the present disclosure. [Figure 7] 1 is a functional block diagram illustrating a configuration of a network device according to a first embodiment of the present disclosure. [Figure 8] FIG. 3 is a sequence diagram illustrating an operation of the first embodiment of the present disclosure. [Figure 9] FIG. 2 is a diagram illustrating a configuration of a computer that constitutes the maintenance work support device of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0013] First, an overview of one embodiment of the present disclosure will be described with reference to the drawings. Note that the reference numerals in this overview are added to each element for convenience as an example to facilitate understanding, and are not intended to limit the present disclosure to the illustrated form. Furthermore, connecting lines between blocks in the drawings and the like referred to in the following description include both bidirectional and unidirectional lines. Unidirectional arrows are used to schematically indicate the flow of main signals (data) and do not exclude bidirectionality. A program is executed via a computer device, which includes, for example, a processor, a storage device, an input device, a communication interface, and, if necessary, a display device. Furthermore, this computer device is configured to be able to communicate with internal or external devices (including computers) via the communication interface, whether wired or wireless. Furthermore, ports or interfaces are present at the input / output connection points of each block in the drawings, but are not shown.

[0014] In one embodiment, the present disclosure can be realized by a maintenance work support device 10 connected to a system configured to include a device 20 having a buffering function for retaining transmitted and received data of device-to-device communication for a certain period of time, as shown in FIG. 1 . This maintenance work support device 10 includes an alarm detection means 11, an instruction means 12, and a data acquisition means 13. More specifically, the alarm detection means 11 detects an alarm that has occurred in the system. Upon detecting the alarm, the instruction means 12 instructs the device to stop buffering the transmitted and received data of the device-to-device communication. Then, the data acquisition means 13 acquires the transmitted and received data of the device-to-device communication from the device.

[0015] The maintenance work support device 10 and the device 20 configured as described above operate as follows: In the initial state, as shown in Fig. 2, the device 20 has a buffering function 21, which buffers data of inter-device communications 1, 2, ... between the device 20 and the device 30 of the communication partner.

[0016] Thereafter, it is assumed that some abnormality occurs in the system including the device 20, and an alarm is sent to the maintenance work support device 10 ((1) Alarm sending in FIG. 4). When the maintenance work support device 10 detects the alarm that has occurred in the system (step S01 in FIG. 3), it instructs the device 20 to stop buffering the transmitted and received data in the inter-device communication (step S02 in FIG. 3, (2) Buffering stop instruction in FIG. 4).

[0017] The device 20 includes a control means 22 and has a function of stopping the operation of the buffering function 21 in response to a buffering stop instruction from the maintenance work support device 10. Furthermore, the maintenance work support device 10 acquires the transmission and reception data of the inter-device communication from the device 20 (step S03 in FIG. 3, (3) Acquire transmission and reception data in FIG. 4).

[0018] The maintenance work support device 10 and the device 20 configured as described above make it possible to easily collect transmission and reception data of inter-device communication between the device 20 and the device 30 when an abnormality occurs in the system. This is because a configuration is adopted in which, when an alarm occurs, the maintenance work support device 10 outside the device 20 sends a buffering stop instruction and collects transmission and reception data of inter-device communication immediately before that.

[0019] [First embodiment] Next, a first embodiment in which a maintenance work support device 100 instructs a plurality of devices to stop buffering and collects transmission and reception data of communication between devices will be described in detail with reference to the drawings. Fig. 5 is a diagram showing the configuration of the first embodiment of the present disclosure. Referring to Fig. 5, a configuration is shown in which the maintenance work support device 100, a server 200, a network device 210 such as a switch or a router, and an opposing server 300 are connected.

[0020] The maintenance operation support device 100 includes an alarm detection unit 101 , a buffering stop instruction unit 102 , a transmission / reception data acquisition unit 103 , a setting acceptance unit 104 , and a buffering restart instruction unit 105 .

[0021] The setting reception unit 104 receives setting information specifying the target devices (servers, network devices) for which buffering is to be stopped and for which transmitted and received data is to be acquired, for each type of alarm issued by the system. This setting reception unit 104 corresponds to a means for storing setting information that sets the stop of buffering of transmitted and received data in device-to-device communications and the range for which transmission is requested. Furthermore, even for the same type of alarm, if the alarm levels are different, the setting reception unit 104 may store different setting information for each target device (server, network device) for which transmitted and received data is to be acquired. In this way, for example, if a higher alarm level indicates a greater impact on the system, setting information can be set to stop buffering and expand the range for which transmitted and received data is acquired. Conversely, if the alarm level is low, setting information can be set to stop buffering and narrow the range for which transmitted and received data is acquired. This reduces the impact on the system.

[0022] When the alarm detection unit 101 receives an alarm from a system configured to include the server 200 and the network device 210, it refers to the setting information set in the setting reception unit 104 and determines whether to notify the buffering stop instruction unit 102. Specifically, if the received alarm is an alarm for which buffering is to be stopped (a target for collecting transmitted and received data), the alarm detection unit 101 notifies the buffering stop instruction unit 102 of information about the device for which buffering is to be stopped, along with information about the alarm. Therefore, the alarm detection unit 101 corresponds to the alarm detection means 11 described above. The sender of the alarm may be either the server 200 or the network device 210, or may be an abnormality monitoring device or the like provided independently of these.

[0023] The buffering stop instruction unit 102 selects a device for which buffering is to be stopped based on the information received from the alarm detection unit 101, and instructs the selected device (server 200, network device 210) to stop buffering. Therefore, this buffering stop instruction unit 102 corresponds to the instruction means 12 described above.

[0024] The transmission / reception data acquisition unit 103 acquires the transmission / reception data of the device-to-device communication from the device. Therefore, the transmission / reception data acquisition unit 103 corresponds to the data acquisition means 13 described above.

[0025] When the transmission / reception data acquisition unit 103 has completed acquisition of the transmission / reception data for inter-device communication, the buffering resume instruction unit 105 instructs the device that has instructed it to stop buffering to resume buffering.

[0026] Next, a description will be given of the configuration of server 200 and network device 210. Fig. 6 is a functional block diagram showing the configuration of server 200. Referring to Fig. 6, the configuration includes a buffering function unit 201, a control unit 202, a transmission / reception data holding unit 203, and an application 204.

[0027] The buffering function unit 201 has a function of temporarily storing transmitted and received data of inter-device communication with the opposing server 300 in a transmitted and received data storage unit 203. Specifically, the buffering function unit 201 acquires transmitted and received data of inter-device communication with the opposing server 300 by an application (program) 204, and buffers the data.

[0028] The control unit 202 controls the operation of the buffering function unit 201 in accordance with instructions from the maintenance work support device 100. Furthermore, the control unit 202 transmits data temporarily stored in the transmission / reception data storage unit 203 to the maintenance work support device 100 in accordance with a request from the maintenance work support device 100.

[0029] The transmitted and received data storage unit 203 is used as a storage destination for transmitted and received data for device-to-device communication with the opposing server 300. The data stored in the transmitted and received data storage unit 203 is discarded starting with the oldest data and used to store new transmitted and received data. Therefore, the storage capacity of the transmitted and received data storage unit 203 does not need to be large.

[0030] The application (program) 204 is a program that communicates with the application (program) on the opposing server 300 side.

[0031] Fig. 7 is a functional block diagram showing the configuration of network device 210. Referring to Fig. 7, the configuration includes buffering function unit 211, control unit 212, transmission / reception data holding unit 213, and data relay unit 214.

[0032] The buffering function unit 211 is a function for temporarily storing, in a transmission / reception data storage unit 213, transmission / reception data for inter-device communication between the server 200 and the opposing server 300.

[0033] The control unit 212 controls the operation of the buffering function unit 211 in accordance with instructions from the maintenance work support device 100. Furthermore, the control unit 212 transmits data temporarily stored in the transmission / reception data storage unit 213 to the maintenance work support device 100 in accordance with a request from the maintenance work support device 100.

[0034] The transmitted and received data storage unit 213 is used as a storage destination for transmitted and received data for device-to-device communication with the opposing server 300. The data stored in the transmitted and received data storage unit 213 is discarded starting with the oldest data and used to store new transmitted and received data. Therefore, the storage capacity of the transmitted and received data storage unit 213 does not need to be large.

[0035] The data relay unit 214 relays transmitted and received data in inter-device communications between the server 200 and the opposing server 300. Note that, although one server 200 and one network device 210 are shown in the example of Fig. 5, there may be a plurality of servers 200 and a plurality of network devices 210.

[0036] The functions of the server 200 and the network device 210 described above can be realized by installing programs for realizing functions corresponding to the buffering function units 201 and 211 and the control units 202 and 212 in the server 200 and the network device 210, respectively.

[0037] Next, the operation of this embodiment will be described in detail with reference to the drawings. Fig. 8 is a sequence diagram showing the operation of the present disclosure. Referring to Fig. 8, first, when the maintenance work support device 100 detects an alarm (step S001), it selects the server 200 or the network device 210 depending on the content of the alarm and instructs them to stop buffering (step S002). In the example of Fig. 8, the maintenance work support device 100 selects both the server 200 and the network device 210 and instructs them to stop buffering.

[0038] Upon receiving the instruction, the server 200 and the network device 210 each stop buffering the transmitted and received data of the inter-device communication (step S003). Next, the maintenance work support device 100 acquires the transmitted and received data of the inter-device communication from the server 200 and the network device 210 (step S004). Note that in the example of FIG. 8, the maintenance work support device 100 actively acquires the transmitted and received data of the inter-device communication from the server 200 and the network device 210, but the manner in which the maintenance work support device 100 acquires the transmitted and received data of the inter-device communication is not limited to this. For example, the server 200 and the network device 210 that have stopped buffering may voluntarily transmit the transmitted and received data of the inter-device communication to the maintenance work support device 100. Even in this manner, the maintenance work support device 100 can acquire the transmitted and received data of the inter-device communication.

[0039] When the maintenance work support device 100 has completed acquisition of the transmission and reception data of the inter-device communication, it instructs the server 200 and the network device 210 to resume buffering (step S005).

[0040] Upon receiving the instruction, the server 200 and the network device 210 each resume buffering of the transmitted and received data for inter-device communication (step S006).

[0041] As described above, according to this embodiment, when an alarm is received, it is possible to acquire transmission and reception data of inter-device communications between the server 200 and the network device 210 before and after the occurrence of the alarm. This makes it possible to analyze an abnormality that has occurred in the system and use the information to identify the cause and develop countermeasures. Furthermore, in this embodiment, buffering is resumed after the transmission and reception data is acquired, so the impact of acquiring the transmission and reception data is minimal. For example, even in the case of consecutively occurring abnormalities, transmission and reception data can be acquired each time, and data necessary for analyzing the cause, etc., can be collected.

[0042] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and further modifications, substitutions, and adjustments can be made without departing from the basic technical concept of the present disclosure. For example, the network configurations, element configurations, and data representation formats shown in the drawings are examples intended to aid in understanding the present disclosure, and are not limited to the configurations shown in these drawings.

[0043] For example, in the above-described embodiments, a system including the server 200 and the network device 210 has been described as an example of a system, but the system configuration is not limited to this and other types of devices may be included. Of course, other types of devices may be provided instead of the server 200 and the network device 210. Furthermore, these devices may have a buffering function. In this case, these devices may also be targets for stopping buffering and for obtaining transmitted and received data.

[0044] (About hardware configuration) In each embodiment of the present disclosure, each component of each device represents a functional block. Some or all of the components of each device are realized by any combination of an information processing device 900 and a program, for example, as shown in Fig. 9. Fig. 9 is a block diagram showing an example of the hardware configuration of the information processing device 900 that realizes each component of each device. As an example, the information processing device 900 includes the following configuration. ·CPU(Central Processing Unit)901 ROM (Read Only Memory) 902 ·RAM(Random Access Memory)903 Program 904 loaded into RAM 903 A storage device 905 for storing a program 904 A drive device 907 for reading and writing data from and to the recording medium 906 A communication interface 908 for connecting to a communication network 909 Input / output interface 910 for inputting and outputting data Bus 911 connecting each component

[0045] Each component of each device in each embodiment is realized by the CPU 901 acquiring and executing a program 904 that realizes these functions. That is, the CPU 901 in FIG. 9 executes a buffering stop / resume instruction program and a data acquisition program, and performs an update process for each calculation parameter stored in the RAM 903, the storage device 905, etc. The program 904 that realizes the function of each component of each device is, for example, stored in advance in the storage device 905 (or ROM 902), and is read out by the CPU 901 as needed. The program 904 may be supplied to the CPU 901 via the communication network 909, or may be stored in advance in the recording medium 906, and the drive device 907 may read out the program and supply it to the CPU 901.

[0046] There are various variations in the method of realizing each device. For example, each device may be realized by any combination of a separate information processing device 900 and a program for each component. Furthermore, multiple components included in each device may be realized by any combination of a single information processing device 900 and a program. In other words, the functions of the maintenance work support device 100, the server 200, and the network device 210 described above can be realized by a computer program that causes a processor installed in these devices to execute the above-mentioned processes using the hardware.

[0047] In addition, some or all of the components of each device may be realized by other general-purpose or dedicated circuits, processors, etc., or a combination of these. These may be configured by a single chip, or by multiple chips connected via a bus.

[0048] Some or all of the components of each device may be realized by a combination of the above-mentioned circuits and programs.

[0049] When some or all of the components of each device are realized by multiple information processing devices, circuits, etc., the multiple information processing devices, circuits, etc. may be centrally or decentralized. For example, the information processing devices, circuits, etc. may be realized as a client-server system, a cloud computing system, or the like, in a form in which each device is connected via a communication network.

[0050] It should be noted that the above-described embodiments are preferred embodiments of the present disclosure, and the scope of the present disclosure is not limited to only the above-described embodiments. In other words, those skilled in the art can modify or substitute the above-described embodiments to construct various modified forms without departing from the gist of the present disclosure.

[0051] A part or all of the above-described embodiments can be described as, but not limited to, the following supplementary notes.

[0052] [Appendix 1] The system is connected to a device having a buffering function that stores data transmitted and received during device-to-device communication for a certain period of time. means for detecting an alarm generated in the system; a means for instructing the device to stop buffering of transmission and reception data in the device-to-device communication when the alarm is detected; means for acquiring, from the device, transmission and reception data of the device-to-device communication; A maintenance work support device equipped with the above. [Appendix 2] The maintenance work support device further includes: The device further includes a storage unit for storing setting information for setting a range for requesting stop of buffering of transmitted / received data in the device-to-device communication and transmission, for each type of alarm; A configuration can be adopted in which the device from which transmission and reception data of inter-device communications is collected is changed depending on the type of the detected alarm. [Appendix 3] The maintenance work support device described above can be configured to be able to set a range for requesting suspension of buffering of transmitted and received data in the inter-device communication and transmission for each level of the alarm. [Appendix 4] The above-mentioned maintenance work support device can further be configured to have a means for instructing the device to resume buffering of the transmission and reception data of the device-to-device communication after obtaining the transmission and reception data of the device-to-device communication from the device. [Appendix 5] In the above-mentioned maintenance work support device, the above-mentioned device is a server or a network device, The transmission and reception data of the device-to-device communication may be transmission and reception data when the server or network device communicates with an opposing server. [Appendix 6] A buffering function that holds data sent and received during device-to-device communications for a certain period of time; a means for stopping buffering of transmission / reception data in the inter-device communication in response to a request from a predetermined maintenance work support device; means for transmitting transmission / reception data of the inter-device communication to the maintenance work support device; Equipment with. [Appendix 7] a device having a buffering function for holding transmitted and received data for device-to-device communication for a certain period of time; means for detecting an alarm that has occurred in a system configured by the devices; means for instructing the devices to stop buffering of transmitted and received data in the device-to-device communication when the alarm is detected; and means for acquiring the transmitted and received data in the device-to-device communication from the devices. a maintenance work support device including: Business systems including. [Appendix 8] A maintenance work support device connected to a system including a device having a buffering function for holding transmission and reception data of device-to-device communications for a certain period of time, When an alarm that has occurred in the system is detected, an instruction is given to the device to stop buffering of the transmitted and received data in the device-to-device communication; Acquiring transmission and reception data of the device-to-device communication from the device; A method for collecting transmission and reception data for device-to-device communications. [Appendix 9] A computer connected to a system including a device having a buffering function that holds data sent and received during device-to-device communication for a certain period of time. a process of instructing the device to stop buffering of transmission and reception data in the device-to-device communication when an alarm that has occurred in the system is detected; A process of acquiring transmission and reception data of the device-to-device communication from the device; A program that executes the following. The embodiments described in the above Supplementary Notes can be combined with each other after necessary modifications are made. For example, a configuration that combines the contents described in Supplementary Note 2 and the contents described in Supplementary Note 4 is also included in the scope of disclosure of this specification. The embodiments of Supplementary Notes 6 to 9 can be expanded to the embodiments of Supplementary Notes 2 to 5, similarly to Supplementary Note 1.

[0053] The disclosures of the above-cited patent documents are incorporated herein by reference and may be used as the basis or part of this disclosure, as necessary. Within the scope of this disclosure (including the claims), modifications and adjustments of the embodiments and examples are possible based on the basic technical concepts. Furthermore, within the scope of this disclosure, various combinations and selections (including partial deletions) of various disclosed elements (including elements of each claim, elements of each embodiment or example, elements of each drawing, etc.) are possible. In other words, this disclosure naturally includes various modifications and alterations that would be possible by a person skilled in the art in accordance with the entire disclosure and technical concepts, including the claims. In particular, with regard to the numerical ranges set forth herein, any numerical value or subrange within that range should be construed as specifically set forth, even if not otherwise specified. Furthermore, the disclosures of the above-cited documents, when used in part or in whole in combination with the disclosures herein as part of this disclosure, in accordance with the spirit of this disclosure, are also deemed to be included in the disclosures of this application. [Explanation of symbols]

[0054] 10, 100 Maintenance work support equipment 11 Alarm detection means 12 Instruction means 13 Data Acquisition Methods 20, 30 equipment 21 Buffering function 22 Control Means 101 Alarm detection unit 102 Buffering stop instruction section 103 Transmission and reception data acquisition unit 104 Settings reception section 105 Buffering Resume Indicator 200 servers 201, 211 Buffering function unit 202, 212 control section 203, 213 Transmission / reception data storage unit 204 Applications 210 Network Equipment 214 Data Relay Unit 300 Opposite server 900 Information Processing Equipment 901 CPU(Central Processing Unit) 902 ROM (Read Only Memory) 903 RAM (Random Access Memory) 904 Program 905 Storage device 906 Recording Media 907 Drive unit 908 Communication Interface 909 Communication Network 910 Input / Output Interface 911 Bus

Claims

1. The system is connected to a device having a buffering function that stores data transmitted and received during device-to-device communication for a certain period of time. means for detecting an alarm generated in the system; a means for instructing the device to stop buffering of transmission and reception data in the device-to-device communication when the alarm is detected; means for acquiring, from the device, transmission and reception data of the device-to-device communication; A maintenance work support device equipped with the above.

2. The device further includes a storage unit for storing setting information for setting a range for requesting stop of buffering of transmitted / received data in the device-to-device communication and transmission, for each type of alarm; 2. The maintenance work support device according to claim 1, wherein the device from which transmission and reception data of inter-device communications is collected is changed depending on the type of the detected alarm.

3. 3. The maintenance work support device according to claim 2, wherein a range for requesting stoppage of buffering of transmission data in the inter-device communication and transmission can be set for each level of the alarm.

4. 2. The maintenance work support device according to claim 1, further comprising means for instructing said device to resume buffering of said transmitted and received data in said inter-device communication after said device has acquired said transmitted and received data in said inter-device communication from said device.

5. the device is a server or a network device, 5. The maintenance work support device according to claim 1, wherein the transmission and reception data in the inter-device communication is transmission and reception data when the server or network device communicates with an opposing server.

6. A buffering function that holds data sent and received during device-to-device communications for a certain period of time; a means for stopping buffering of transmission / reception data in the inter-device communication in response to a request from a predetermined maintenance work support device; means for transmitting transmission / reception data of the inter-device communication to the maintenance work support device; Equipment with.

7. a device having a buffering function for holding transmitted and received data for device-to-device communication for a certain period of time; means for detecting an alarm that has occurred in a system configured by the devices; means for instructing the devices to stop buffering of transmitted and received data in the device-to-device communication when the alarm is detected; and means for acquiring the transmitted and received data in the device-to-device communication from the devices. a maintenance work support device including: Business systems including.

8. A maintenance work support device connected to a system including a device having a buffering function for holding transmission and reception data of device-to-device communications for a certain period of time, When an alarm that has occurred in the system is detected, an instruction is given to the device to stop buffering of the transmitted and received data in the device-to-device communication; Acquiring transmission and reception data of the device-to-device communication from the device; A method for collecting transmission and reception data for device-to-device communications.

9. A computer connected to a system including a device having a buffering function that holds data sent and received during device-to-device communication for a certain period of time. a process of instructing the device to stop buffering of transmission and reception data in the device-to-device communication when an alarm that has occurred in the system is detected; A process of acquiring transmission and reception data of the device-to-device communication from the device; A program that executes the following.

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