JP6166028B2 - Setting information management system, setting information management device, management target device, and setting information management method - Google Patents

Description

  The present invention relates to a setting information management system, a setting information management device, a management target device, and a setting information management method.

  In a wavelength division multiplexing transmission system such as an optical submarine cable, signals having different transponder wavelengths can be multiplexed to increase communication traffic that can be accommodated.

  An example of a setting information management system for a wavelength division multiplex transmission system that automatically changes network settings based on an alarm signal is disclosed in Patent Document 1. The setting information management system disclosed in Patent Document 1 includes a pair (two) or more of terminal devices (line terminator, SLTE (Submarine Line Terminal Equipment)), a transmission path, a switch, a network management module, and network management. A system and a database are provided. The setting information management system operates as follows.

  The terminal device monitors a plurality of physical connections on the transmission path and issues an alarm signal when a failure occurs.

  The network management system is connected to the network management module. The network management system monitors the service provisioning request and issues an alarm signal when the service provisioning request occurs.

  The transmission path is connected between the terminal stations. The switch is connected to the terminal device.

  The network management module is connected to the terminal device, the switch, and the network management system. When receiving the alarm signal from the terminal device or the network management system, the network management module changes the setting of the terminal device or the switch based on the received alarm signal and a command corresponding to the alarm signal stored in the database.

  The database is connected to the switch. The database stores instructions for disaster recovery plans or service provisioning.

  An example of a terminal device (wavelength division multiplexing, WDM (Wavelength Division Multiplexing) transmission device) in a wavelength multiplexing transmission system that automatically changes the setting of the transmission wavelength based on the reception wavelength of the transponder is disclosed in Patent Document 2 Has been. The terminal device of Patent Document 2 includes a plurality of transponders, a wavelength division multiplexing unit (WDM unit), a transponder control unit that performs monitoring control of the transponder, and a WDM control unit that performs monitoring control of the wavelength division multiplexing unit. . The terminal device operates as follows.

  Each transponder of the terminal device detects the wavelength of the received light received from the wavelength division multiplexing unit. The transponder automatically changes the wavelength of the transmission light to be transmitted to the WDM unit based on the wavelength of the reception light. The transponder can automatically set and change the wavelength of the transmission light transmitted to the WDM unit by the transponder alone, regardless of the functions of the wavelength division multiplexing unit, the transponder control unit, or the WDM control unit.

  An example of a terminal device (optical transmission device) in a wavelength division multiplex transmission system that prevents delay in communication with high priority is disclosed in Patent Document 3. The terminal device of Patent Document 3 includes a plurality of transponders (transponder units), a wavelength multiplexing / demultiplexing unit (multiplexer / demultiplexer), and a monitoring control unit (central monitoring unit) that performs monitoring control of the transponder. . The terminal device operates as follows.

  The monitoring control unit of the terminal device sets one transponder (aggregation transponder) that aggregates communication with high priority. The monitoring control unit sets another transponder that performs communication with low priority. For high-priority communication, the aggregation transponder performs on behalf of other transponders. For low priority communications, other transponders act on behalf of the aggregation transponder.

JP 2005-502234 A (page 6-9, FIGS. 1A-2B) JP 2007-097067 (page 5-9, FIGS. 2, 5) JP 2009-159294 A (page 5-9, FIG. 1-8)

  With the technique disclosed in Patent Document 1, network settings can be automatically changed when a network failure or a service provisioning request occurs. However, the settings that can be changed automatically are limited to the settings related to network failures and service provisioning requests among the settings of the transponder, and it is not possible to efficiently backup or restore the transponder general setting information. There's a problem.

  In the technique disclosed in Patent Document 2, the wavelength of the transponder transmission light can be automatically changed based on the wavelength of the transponder reception light. However, the settings that can be changed automatically are limited to the settings related to the wavelength of the transmitted light among the settings of the transponder, and there is a problem that it is not possible to make efficient the backup or restore operation of general setting information of the transponder. .

  With the technique disclosed in Patent Document 3, the setting for preventing communication delay can be automated. However, the settings that can be automatically changed are limited to the settings to prevent communication delay among the settings of the transponder, and there is a problem that the backup / restoration work of general setting information of the transponder cannot be made efficient. is there.

  As described above, the technology disclosed in Patent Documents 1-3 does not have a function for centrally backing up setting information of a plurality of management target devices. Further, the technology disclosed in Patent Documents 1-3 relates to automation of setting change of a specific function of a management target device. For this reason, no consideration is given to the central management of the setting information of the management target device and the efficiency of backup or restoration of general setting information of the management target device.

  An object of the present invention is to provide a setting information management system capable of centrally managing setting information of a management target device in the monitoring control of a plurality of management target devices, and improving the efficiency of backup or restoration of general setting information of the management target device, The object is to provide a setting information management apparatus, a management target apparatus, and a setting information management method.

  The setting information management system of the present invention includes a first storage unit that holds first setting information, a first file sharing unit that shares first setting information with another device, The second setting information generated by copying the setting information is held, and the setting information is synchronized with the first setting information or with the third setting information held by another device. A second storage means, a setting information management device including the third storage information, a third storage means for holding the third setting information, and a second file for sharing the third setting information between the setting information management device The fourth setting information generated by copying the sharing means and the third setting information is retained, and the fourth setting information and the third setting information are synchronized, or the fourth setting information and the first setting information are A fourth storage unit that synchronizes with the setting information, and a management target device including the management target device. There, characterized in that.

  The setting information management device of the present invention includes a first storage unit that holds first setting information, a first file sharing unit that shares first setting information with other devices, The second setting information generated by copying the setting information is held, and the setting information is synchronized with the first setting information or with the third setting information held by another device. And second storage means.

  The management target device of the present invention includes a first storage unit that holds first setting information, a first file sharing unit that shares first setting information with another device, and a first setting The second setting information generated by copying the information is held, and the setting information is synchronized with the first setting information or with the third setting information held by another device. A second storage means connected to the setting information management device including the second storage means, and the second storage means for sharing the third setting information between the third storage means for holding the third setting information and the setting information management device The file setting means holds the fourth setting information generated by copying the third setting information, and synchronizes the fourth setting information and the third setting information, or the fourth setting information and the first setting information. And fourth storage means for synchronizing with the setting information.

  The monitoring method of the present invention holds the first setting information, shares the first setting information with the first other device, and generates the second setting by copying the first setting information. Holding the information, synchronizing the setting information with the first setting information or with the third setting information held by the first other device, the first setting information and Request to update the second setting information, or receive the update request for the first setting information, hold the third setting information, and the third setting information with the second other device The fourth setting information generated by copying the third setting information and synchronizing the fourth setting information and the third setting information, or the fourth setting information and the first setting information. It is characterized by performing synchronization with setting information.

  According to the present invention, in the monitoring control of a plurality of monitoring control targets, it is possible to centrally manage the setting information of the management target device, and it is possible to improve the efficiency of backup or restoration of general setting information of the management target device. .

It is a block diagram which shows the structure of the setting information management system in embodiment of this invention. It is a sequence chart explaining the operation | movement at the time of setting information update of the setting information management apparatus of the setting information management system in embodiment of this invention, and a management object apparatus. It is a sequence chart explaining the operation | movement at the time of replacement | exchange or expansion of the management object apparatus of the setting information management apparatus of the setting information management system in embodiment of this invention, and a management object apparatus. It is a sequence chart explaining the operation | movement at the time of replacement | exchange or addition of the setting information management apparatus of the setting information management apparatus of the setting information management system in embodiment of this invention, and a management object apparatus. It is a sequence chart explaining the operation | movement at the time of simultaneous starting of the setting information management apparatus of a setting information management system in the embodiment of this invention, and a management target apparatus of a setting information management apparatus and a management target apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

  FIG. 1 is a block diagram illustrating a configuration of a setting information management system and an internal configuration of a setting information management device and a management target device according to an embodiment of the present invention. Note that here, a configuration including one managed device connected to the setting information management device is illustrated, but the present embodiment is not limited to this. A plurality of management target devices may be connected to the setting information management device. In this case, each of the plurality of management target devices operates in the same manner as the management target device 40 described below.

  The setting information management system in this embodiment includes a setting information management device 30 and a management target device 40.

  The setting information management device 30 is connected to one or more management target devices 40. The setting information management device 30 receives the setting information update request generated by the operation of the maintenance person, or receives the setting information update request from another device connected to the setting information management device 30, and A setting information update request is transmitted to the device 40.

  Alternatively, the setting information management device 30 receives a setting information acquisition request from the management target device 40 and transmits a setting information acquisition response to the management target device 40.

  Alternatively, the setting information management device 30 transmits a setting information acquisition request to the management target device 40 and receives a setting information acquisition response from the management target device 40.

  The other device may be, for example, a simple monitoring control terminal (CIT; Craft Interface Terminal), an EMS (Element Management System), an NMS (Network Management System), or the like.

  The setting information management apparatus 30 includes a setting information file 34, a file sharing unit 33, a setting information cache 32, and a setting information control unit 31.

  The setting information file 34 holds setting information for each management target device required when starting up the management target device on a storage medium that does not require a power source for storage. Examples of storage media that do not require a power source for storage retention include a flash memory and a hard disk. That is, the setting information file 34 can hold setting information even when the setting information management apparatus 30 is powered off. For example, when a plurality of devices to be managed are accommodated in one parent device, each device to be managed is identified with a slot number or the like accommodated in the parent device as an identifier. Further, the setting information of each management target device is also identified by using, for example, a slot number as an identifier. The setting information is held as a file having a name including a slot number or the like as an identifier, or as a file in a folder having a name including the slot number or the like as an identifier.

  The file sharing unit 33 shares setting information with the management target device 40. The file sharing unit 33 sets a part or all of the setting information file 34 as a file sharing target. The setting information is shared by using a file sharing protocol (distributed file protocol, file access protocol) such as NFS (Network File System), CIFS (Common Internet File System), or WebDAV (Web-based Distributed Authoring and Versioning). It can be carried out.

  The setting information cache 32 operates the setting information management device 30 with setting information of one or more managed devices obtained from the setting information file 34 or obtained from the managed device 40 via the file sharing means 33. Sometimes hold. The setting information cache 32 synchronizes setting information with the setting information file 34 or the management target device 40.

  The setting information control unit 31 receives the setting information update request, passes the new setting information to the setting information cache 32, and transmits a setting information update notification to the management target device 40. Alternatively, the setting information control unit 31 requests the setting information cache 32 for setting information when the setting information management device 30 is activated without the setting information.

  The management target device 40 is connected to the setting information management device 30. The management target device 40 receives the setting information acquisition request from the setting information management device 30 and transmits a setting information acquisition response to the setting information management device 30. In addition, the management target device 40 transmits a setting information acquisition request to the setting information management device 30 and receives a setting information acquisition response from the setting information management device 30.

  The management target device 40 includes a setting information file 44, a file sharing unit 43, a setting information cache 42, and a setting information control unit 41.

  The setting information file 44 holds setting information necessary for starting up the management target device 40 on a storage medium. Note that the storage medium used by the setting information file 44 is not limited to a storage medium that does not require a power supply for storage retention, but may be a storage medium that requires a power supply for storage retention. Examples of storage media that require a power source for storage retention include dynamic random access memory (DRAM) and static random access memory (SRAM). Therefore, when a storage medium that requires a power source is used for storing and holding, the setting information file 44 cannot hold setting information when the management target device 40 is not operating.

  The file sharing unit 43 shares setting information with the setting information management apparatus 30 using, for example, the file sharing protocol as described above. The file sharing unit 43 sets the setting information file 44 as a file sharing target. The contents of the setting information file 44 to be shared correspond to part or all of the contents of the setting information file 34.

  The setting information cache 42 holds the setting information of the management target device 40 obtained from the setting information management device 30 via the file sharing unit 43 when the management target device 40 is in operation. The setting information cache 42 synchronizes setting information with the setting information file 44 or the setting information management apparatus 30.

  The setting information control unit 41 receives the setting information update request, passes the new setting information to the setting information cache 32, and updates the setting of the management target device 40. Alternatively, the setting information control unit 31 requests the setting information cache 42 for the setting information and updates the setting of the management target device 40 when the management target device 40 is activated without the setting information.

  Here, the management target device 40 has been described as an example. However, when there are a plurality of management target devices, the same applies to other management target devices.

  Next, the operation of this embodiment will be described. Here, the management target device 40 will be described as an example, but when there are a plurality of management target devices, the same applies to other management target devices.

  FIG. 2 is a sequence chart for explaining the operation of the setting information management device and the management target device of the setting information management system according to the embodiment of the present invention when the setting information is updated.

  The setting information control unit 31 of the setting information management device 30 receives a setting information update request generated by the operation of the maintenance person or includes new setting information from another device connected to the setting information management device 30. A setting information update request is received (step S101), and new setting information is transferred to the setting information cache 32 of the setting information management apparatus 30 (step S102).

  The setting information cache 32 of the setting information management device 30 updates the setting information file 34 of the setting information management device 30 with the new setting information (step S103).

  The setting information cache 32 of the setting information management device 30 transmits a setting information update request to the setting information cache 42 of the management target device 40 (step S104).

  The setting information cache 42 of the management target device 40 receives the setting information update request from the setting information cache 32 of the setting information management device 30 (step S201).

  The setting information cache 42 of the management target device 40 acquires new setting information by the file sharing means 43 of the management target device 40 and updates the setting information file 44 of the management target device 40 and the setting information cache 42. (Step S202).

  The setting information control unit 31 of the setting information management device 30 transmits a setting information update notification to the setting information control unit 41 of the management target device 40 (step S105).

  The setting information control unit 41 of the management target device 40 receives the setting information update notification from the setting information control unit 31 of the setting information management device 30 (step S203), and updates the setting of the management target device 40 (step S204).

  FIG. 3 is a sequence chart for explaining the operation of the setting information management device and the management target device of the setting information management system according to the embodiment of the present invention when the management target device is replaced or added.

  Setting information for the management target device 40 to be replaced or added is stored in the setting information file 34 of the setting information management device 30 before the management target device 40 is activated.

  When the management target device 40 is replaced or added and started up without setting information, the setting information control unit 41 of the management target device 40 requests setting information from the setting information cache 42 of the management target device 40 ( Step S211).

  Since there is no setting information in the setting information cache 42, the setting information cache 42 of the management target device 40 requests the setting information from the file sharing unit 43 (step S212).

  The file sharing unit 43 of the management target device 40 transmits a setting information acquisition request to the file sharing unit 33 of the setting information management device 30 (step S213).

  The file sharing unit 33 of the setting information management device 30 receives the setting information acquisition request from the file sharing unit 43 of the management target device 40 (step S111).

  The file sharing means 33 of the setting information management device 30 acquires the setting information of the management target device 40 from the setting information file 34 of the setting information management device 30 (step S112).

  The file sharing unit 33 of the setting information management device 30 transmits a setting information acquisition response including the setting information of the management target device 40 to the file sharing unit 43 of the management target device 40 (step S113).

  The file sharing means 43 of the management target device 40 receives the setting information acquisition response from the file sharing means 33 of the setting information management device 30 and passes it to the setting information cache 42 of the management target device 40 (step S214).

  The setting information cache 42 of the management target device 40 updates the setting information file 44 of the management target device 40 and the setting information of the setting information cache 42 with the setting information acquired from the file sharing means 43, and controls the setting information of the management target device 40. The acquisition of setting information is notified to the means 41 (step S215).

  The setting information control means 41 of the management target device 40 updates the setting of the management target device 40 using the setting information of the setting information cache 42 (step S216).

  FIG. 4 is a sequence chart for explaining the operation at the time of replacement or expansion of the setting information management device of the setting information management system and the management target device of the setting information management system according to the embodiment of the present invention.

  Before the setting information management apparatus 30 to be replaced or added is activated, the management target apparatus 40 is activated.

  After the setting information management device 30 is replaced or added, if the setting information control unit 31 of the setting information management device 30 starts up without setting information, the setting information control unit 31 stores the setting information in the setting information cache 32 of the setting information management device 30. A request is made (step S121).

  Since there is no setting information in the setting information cache 32, the setting information cache 32 of the setting information management apparatus 30 requests the setting information from the file sharing means 33 of the setting information management apparatus 30 (step S122).

  The file sharing unit 33 of the setting information management device 30 transmits a setting information acquisition request to the file sharing unit 43 of the management target device 40 (step S123).

  The file sharing means 43 of the management target device 40 receives the setting information acquisition request from the file sharing means 33 of the setting information management device 30 (step S221).

  The file sharing unit 43 of the management target device 40 acquires the setting information of the management device 40 from the setting information file 44 of the management target device 40 (step S222).

  The file sharing means 43 of the management target device 40 transmits a setting information acquisition response including the setting information of the management target device 40 to the file sharing means 33 of the setting information management device 30 (step S223).

  The file sharing unit 33 of the setting information management device 30 receives the setting information acquisition response from the file sharing unit 43 of the management target device 40 (step S124).

  The file sharing means 33 of the setting information management device 30 passes the received setting information to the setting information cache 32 of the setting information management device 30 (step S125).

  The setting information cache 32 of the setting information management device 30 updates the setting information file 34 of the setting information management device 30 and the setting information of the setting information cache 32 with the setting information of the management target device 40 acquired from the file sharing means 33 (step S126).

  FIG. 5 is a sequence chart for explaining operations of the setting information management device and the management target device of the setting information management system according to the embodiment of the present invention when the setting information management device and the management target device are simultaneously activated. .

  The setting information for the management target devices 40 that are activated simultaneously is stored in the setting information file 34 of the setting information management device 30 before the setting information management device 30 is activated.

  For example, when all the devices are started at the same time after all the devices are shut down, the setting information control unit 31 of the setting information management device 30 requests the setting information from the setting information cache 32 of the setting information management device 30 (step S131).

  Since there is no setting information in the setting information cache 32, the setting information cache 32 of the setting information management device 30 requests the setting information from the file sharing means 33 (step S132).

  The file sharing unit 33 of the setting information management device 30 transmits a setting information acquisition request to the file sharing unit 43 of the management target device 40 (step S133).

  The file sharing means 43 of the management target device 40 receives the setting information acquisition request from the file sharing means 33 of the setting information management device 30 (step S231).

  The file sharing means 43 of the management target device 40 tries to acquire the setting information of the management target device 40 from the setting information file 44 of the management target device 40 (step S232).

  In step S232, since there is no setting information file, the file sharing unit 43 cannot acquire the setting information. Therefore, the file sharing means 43 of the management target device 40 transmits a setting information acquisition response not including the setting information of the management target device 40 (step S233).

  The file sharing means 33 of the setting information management apparatus 30 receives the setting information acquisition response and passes it to the setting information cache 32 (step S134).

  The setting information cache 32 of the setting information management device 30 detects the reception of the setting information acquisition response via the file sharing means 33 of the setting information management device 30 and recognizes that the setting information cannot be acquired (step S135).

  The setting information cache 32 of the setting information management device 30 reads the setting information of the management target device 40 from the setting information file 34 of the setting information management device 30 and updates the setting information of the setting information file 34 of the setting information management device 30 ( Step S136).

  Thereafter, the operation (FIG. 3) at the time of replacement or expansion of the management target device is performed (step S234).

  As described above, in the setting information management system in the present embodiment, the setting information management apparatus holds the setting information of the management target apparatus as a setting information file. Further, even if the managed device does not have the setting information, such as when the managed device is replaced or added, the managed device automatically restores the setting information from the setting information managing device. Even when the setting information file of the setting information management device is lost, such as when the setting information management device is replaced or added, the setting information management device automatically receives the setting information from the active managed device. Back up to In addition, even when the setting information management device and all the management target devices are restarted all at once, the management target device automatically restores the setting information from the setting information management device. As a result, in the monitoring control of a plurality of management target devices, it is possible to centrally manage the setting information of the management target devices, and it is possible to improve the efficiency of backup or restoration of general setting information of the management target devices.

  Further, the storage medium used by the setting information file 44 may be a storage medium that requires a power source for storage retention. In this case, since the setting information management device holds the setting information of the management target device, it is not necessary to provide a storage medium that does not require a power source for storage holding such as a flash memory or a hard disk in order for the monitoring target device to save the setting information. It is. As a result, there is an effect that the downsizing of the monitoring target device or the manufacturing cost can be reduced.

  In addition, this invention is not limited to the above-mentioned embodiment, It can implement in various changes and deformation | transformation in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 10 Setting information management apparatus 20 Management object apparatus 13, 23 Setting information control means 14, 24 Setting information cache 12, 22 File sharing means 11, 21 Setting information file

Claims (5)

A setting information management system comprising one or more managed devices and a setting information management device,
The managed device is:
First storage means for holding first setting information among the setting information for each of the own devices required when starting the own device;
First file sharing means;
Second storage means for holding second setting information among the setting information during operation of the device;
First control means and
Including
The setting information management device includes:
A third storage unit that holds third setting information among the setting information, and does not require a power source for storage holding;
Second file sharing means for sharing the third setting information with the device to be managed;
Fourth storage means for holding the fourth setting information among the setting information when the device is in operation;
Second control means and
Including
The fourth storage means is
When the first storage means does not hold the first setting information, the setting information is synchronized between the fourth setting information and the third setting information,
When the first storage means holds the first setting information, the setting information is synchronized between the fourth setting information and the first setting information,
The first file sharing means shares the first setting information included in the third setting information with the setting information management device, and
The second storage means is
When the third storage means does not hold the third setting information, the setting information is synchronized between the second setting information and the first setting information,
When the third storage means holds the third setting information, the setting information is synchronized between the second setting information and the third setting information,
The second control means includes
When the setting information management device is activated, the fourth setting information is requested to the fourth storage unit, and
Upon receiving the update request for the first setting information, the fourth storage unit is requested to update the third setting information and the fourth setting information, and the update request for the first setting information is sent to the fourth setting information. To the managed device,
The first control means includes
Requesting the second setting information to the second storage unit when starting up the management target device;
Upon receiving the update request for the first setting information, the second storage unit is requested to update the first setting information and the second setting information, and the managed device is in accordance with the second setting information. Update settings
Configuration information management system. The first storage means uses a storage medium that requires a power source for storage retention.
The setting information management system according to claim 1 . A setting information management device connected to one or more managed devices,
The managed device is
First storage means for holding first setting information among the setting information for each of the own devices required when starting the own device;
First file sharing means;
Second storage means for holding second setting information among the setting information during operation of the device;
Connected to one or more managed devices, including
A third storage unit that holds third setting information among the setting information, and does not require a power source for storage holding;
Second file sharing means for sharing the third setting information with the device to be managed;
Fourth storage means for holding the fourth setting information among the setting information when the device is in operation;
Second control means and
With
When the first file sharing means shares the first setting information included in the third setting information with the setting information management device,
The fourth storage means is
When the first storage means does not hold the first setting information, the setting information is synchronized between the fourth setting information and the third setting information,
When the first storage means holds the first setting information, the setting information is synchronized between the fourth setting information and the first setting information,
The second control means includes
When the setting information management device is activated, the fourth setting information is requested to the fourth storage unit, and
Upon receiving the update request for the first setting information, the fourth storage unit is requested to update the third setting information and the fourth setting information, and the update request for the first setting information is sent to the fourth setting information. A setting information management device that transmits to the management target device . A management target device connected to the setting information management device,
The managed device is
First storage means for holding first setting information among the setting information for each of the own devices required when starting the own device;
First file sharing means;
Second storage means for holding second setting information among the setting information during operation of the device;
First control means and
With
The setting information management device includes:
A third storage unit that holds third setting information among the setting information, and does not require a power source for storage holding;
Second file sharing means for sharing the third setting information with the device to be managed;
Fourth storage means for holding fourth setting information among the setting information when the apparatus is in operation;
Including
The first file sharing means shares the first setting information included in the third setting information with the setting information management device, and
The second storage means is
When the third storage means does not hold the third setting information, the setting information is synchronized between the second setting information and the first setting information,
When the third storage means holds the third setting information, the setting information is synchronized between the second setting information and the third setting information,
The first control means includes
Requesting the second setting information to the second storage unit when starting up the management target device;
Upon receiving the update request for the first setting information, the second storage unit is requested to update the first setting information and the second setting information, and the managed device is in accordance with the second setting information. Update the settings of the managed device. A setting information management method for a setting information management system comprising one or more managed devices and a setting information management device,
The managed device is:
First storage means for holding first setting information among the setting information for each of the own devices required when starting the own device;
First file sharing means;
Second storage means for holding second setting information among the setting information during operation of the device;
First control means and
Including
The setting information management device includes:
A third storage unit that holds third setting information among the setting information, and does not require a power source for storage holding;
Second file sharing means for sharing the third setting information with the device to be managed;
Fourth storage means for holding the fourth setting information among the setting information when the device is in operation;
Second control means and
Including
By the fourth storage means,
When the first storage means does not hold the first setting information, the setting information is synchronized between the fourth setting information and the third setting information,
When the first storage means holds the first setting information, the setting information is synchronized between the fourth setting information and the first setting information,
The first file sharing means shares the first setting information included in the third setting information with the setting information management device, and
By the second storage means,
When the third storage means does not hold the third setting information, the setting information is synchronized between the second setting information and the first setting information,
When the third storage means holds the third setting information, the setting information is synchronized between the second setting information and the third setting information,
By the second control means,
When the setting information management device is activated, the fourth setting information is requested to the fourth storage unit, and
Upon receiving the update request for the first setting information, the fourth storage unit is requested to update the third setting information and the fourth setting information, and the update request for the first setting information is sent to the fourth setting information. To the managed device,
By the first control means,
Requesting the second setting information to the second storage unit when starting up the management target device;
Upon receiving the update request for the first setting information, the second storage unit is requested to update the first setting information and the second setting information, and the managed device is in accordance with the second setting information. Update settings of <br/> setting information management method.

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