WO2017215441A1

WO2017215441A1 - Self-recovery method and apparatus for board configuration in distributed system

Info

Publication number: WO2017215441A1
Application number: PCT/CN2017/086396
Authority: WO
Inventors: 程寒杰
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-06-15
Filing date: 2017-05-27
Publication date: 2017-12-21
Also published as: CN107517110B; CN107517110A

Abstract

The present invention relates to the technical field of communications. Disclosed in embodiments of the present disclosure are a self-recovery method and apparatus for board configuration in a distributed system, the method comprising: a main control board sends configuration information of each board to a corresponding board, and caches the configuration information of the corresponding board; the main control board determines whether the board has failed previously according to a previous state and a current state of the board; and if it is determined that the board has failed previously, the main control board sends the previously cached configuration information to the board so as to recover a board service. Upon accurately detecting a board failure, the configuration information of the previously cached board is sent to the corresponding board to ensure that the board service returns to normal.

Description

Single board configuration self-recovering method and device in distributed system

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for self-recovery of a single board in a distributed system.

Background technique

A packet transport network (PTN) device in a communication system is usually a distributed system, and the system includes a main control board, a backboard, and a plurality of boards. The board includes the virtual board and the physical board. The virtual board does not occupy the physical slot. The agent process runs on the central processing unit (CPU). The physical board passes the backplane and the master. The boards are connected, and the related programs are independently run on the physical boards. For specific applications, the configuration of the configuration board and the control plane program are sent by the main control board.

The board may be removed from other slots or other devices. The original configuration information of the main control board is not saved. Therefore, the configuration information sent by the main control board is lost after the board is powered off. . When the board is reset due to various hardware and software reasons, or the application is restarted, the board is configured to be faulty. The main control board must detect the fault and re-deliver the original configuration information of the board. Ensure that the board business can be restored.

The analysis shows that the current communication device detects the running status of the board in the following two modes:

(1) Design a special hardware circuit on the backplane to detect the running status of the board;

(2) The handshake mechanism is used to send a handshake packet to the board through the maintenance program on the master. If the board does not return a response packet within a preset time or period, the board is faulty.

In the above two methods, the main control board has the following shortcomings in the sense that the board has been reset due to various hardware and software reasons or the application has restarted:

The problems with the hardware circuit are as follows:

(1) need to occupy additional hardware resources;

(2) The dedicated hardware circuit lacks flexibility. When an application process restarts abnormally on the board, the hardened hardware circuit may fail to detect the restart. The configuration information of the board is lost, and the service cannot be restored. .

The problem of sending handshake packets to the board periodically through the master program is as follows:

(1) The interaction between the handshake packets of the two parties requires CPU resources. When the interval between timers is short and the number of boards is large, excessive system resources are occupied.

(2) The handshake mechanism usually requires a timeout judgment condition, that is, it needs to wait for several cycles before it can judge that the board is faulty, thereby avoiding the problem of misjudgment due to the blocking of the message in a short time. If the board fails to be restored within the timeout period, the system cannot detect the faults such as the restart and reset of the board. As a result, the board configuration is lost and the service cannot be restored.

Public content

The technical solution to be solved according to the technical solution provided by the embodiment of the present disclosure is to implement self-recovery of the board configuration information when the board is lost due to a hardware and software fault reset or an application process restart.

A method for recovering a single board configuration in a distributed system according to an embodiment of the present disclosure includes:

The main control board sends the configuration information of each board to the corresponding board, and caches the configuration information of the corresponding board.

The main control board determines whether the board has been faulty before the board according to the previous status information and the current status information of the board.

If it is determined that the board is faulty, the configuration information of the previous cache is sent to the board, so that the board can restore the board service.

Preferably, the main control board is determined according to the previous state information and the current state information of the board. Before the step of determining whether the board has failed before, the method further includes:

The main control board receives the rack image packet from the board, and parses the rack image packet to obtain current status information of the board.

The previous state information obtained and saved by parsing the previous rack image message of the board is obtained.

Preferably, the step of determining, by the main control board, whether the board has failed beforehand according to the previous state information and the current state information of the board includes:

Determining, by the main control board, whether the type of the board changes according to the type of the board in the current state information;

If the board type does not change, compare the rack map serial number in the current status information with the rack map serial number in the previous status information;

Determining the board if the rack image sequence number in the current state information is smaller than the rack image sequence number in the previous state information, and the rack image sequence number in the current state information is not equal to zero A failure occurred before.

Preferably, after the step of determining whether the board has failed before the board is determined according to the previous state information and the current state information of the board, the main control board uses the rack image serial number in the current state information. And updating the rack image serial number in the previous state information saved by the main control board.

Preferably, the method further includes: if the type of the board is changed, the main control board does not send the configuration information of the previous cache to the board.

A storage medium according to an embodiment of the present disclosure stores a program for implementing a single board configuration self-recovery method in the distributed system described above.

A single board configuration self-restoring device in a distributed system according to an embodiment of the present disclosure includes:

The packet forwarding module of the main control board is configured to send configuration information of each board to the corresponding board, and cache configuration information of the corresponding board.

The main control board control module is configured to determine whether the board has been faulty before the board according to the previous status information and the current status information of the board.

If the control board of the main control board determines that the board has failed in the preceding stage, the packet forwarding module of the main control board sends the configuration information of the pre-cache to the board for the single The board resumes the board business.

Preferably, the main control board control module is further configured to parse the received rack image message from the board, and obtain the current state information of the board, and obtain the previous analysis on the board. The previous status information obtained and saved by a rack map message.

Preferably, the main control board control module determines whether the board type is changed according to the board type in the current status information, and if the board type does not change, compare the rack map in the current status information. The serial number of the rack image and the sequence number of the rack image in the previous state information, if the rack image serial number in the current state information is smaller than the rack image serial number in the previous state information, and the current state information is in the current state information If the rack image serial number is not equal to zero, it is determined that the board has failed before.

Preferably, the main control board control module determines whether the board has a fault in the front state, and uses the rack image serial number in the current state information according to the previous state information and the current state information of the board. Updating the rack image serial number in the previous state information saved by the main control board.

Preferably, the main control board control module does not send the previously cached configuration information to the board when the board type is changed.

According to still another embodiment of the present disclosure, there is also provided a storage medium comprising a stored program, wherein the program is executed to perform the method of any of the above.

According to still another embodiment of the present disclosure, there is also provided a processor for running a program, wherein the program is executed to perform the method of any of the above.

The technical solution provided by the embodiment of the present disclosure has the following beneficial effects:

The main control board can accurately detect the loss of the configuration of the board, and then re-deliver the pre-cached configuration information to the board. Ensure that the board business is back to normal.

DRAWINGS

1 is a block diagram of a self-recovery method for a single board configuration in a distributed system according to an embodiment of the present disclosure;

2 is a block diagram of a self-recovering device for a single board configuration in a distributed system according to an embodiment of the present disclosure;

3 is a system architecture diagram of a distributed system according to an embodiment of the present disclosure;

4 is a schematic diagram of a state machine in which a main control board program determines that a board is in a bit state according to an embodiment of the present disclosure;

5 is a working flowchart of a packet forwarding module of a main control board according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a process of self-recovery of a S-port configuration packet of a board according to an embodiment of the present disclosure.

detailed description

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

1 is a block diagram of a method for self-recovery of a board configuration in a distributed system according to an embodiment of the present disclosure. As shown in FIG. 1 , the steps include:

Step S101: The main control board sends the configuration information of each board to the corresponding board, and caches the configuration information of the corresponding board.

The configuration information of the board includes parameter configuration information and service configuration information.

Step S102: The main control board determines whether the board has a fault beforehand according to the previous state information and the current state information of the board.

The main control board receives the rack image packet from the board, and parses the rack image packet to obtain the current state information of the board, and obtains the previous machine that parses the board before. The previous status information obtained and saved by the frame message. The main control board determines whether the type of the board is changed according to the type of the board in the current state information. If the type of the board is changed, the configuration information of the previous cache is not sent to the board. If the type is not changed, the current status information of the board and the previous status information are compared to determine whether the board is in front of the board. If the fault occurs, specifically, if the rack map serial number in the current state information of a board is smaller than the rack map serial number in the previous state information, and the rack map serial number in the current state information If the board is in the wrong state, the board is in the wrong state. After determining whether the board has failed before, the current status information is used to update the previous status information saved by the main control board, for example, replacing the main control board with the rack image serial number in the current status information. The rack map serial number in the saved previous status information, so that the main control board can save the latest status information.

Step S103: If it is determined that the board is faulty, the configuration information of the previous cache is sent to the board, so that the board can resume the board service.

The board has multiple slots, and the boards inserted in each slot are pre-configured. The main control board saves information about each slot and its corresponding board type, and the configuration information of the corresponding board. . When the main control board receives the rack image from the board that is inserted in a slot, the board type is parsed to obtain the board type and the rack number. The main control board matches the type of the board to the board that corresponds to the slot. If the board is inconsistent, the board is changed. Send the configuration information until the board that is inserted in the slot is restored to the specified board. The main control board determines that the board inserted in the slot changes from the inconsistent state of the board to the normal running state. The board sends the configuration information of the previous cache. The board type is matched with the board type corresponding to the saved slot. If the board inserted in the slot does not change, the board type does not change. The serial number of the rack image in the status information determines whether the board has failed before. For example, suppose the board 1 is inserted in slot 1. The main board saves the configuration information of board 1. The main control board periodically receives the rack image of the board 1 inserted in the slot 1 and saves the latest rack map serial number. 1. When the main control board determines that the board is inserted in slot 1 according to the type of the board in the rack image that is currently received, the board is determined to be inconsistent. Message. The configuration information of the previously cached board 1 is sent to the board 1 when the board is reinserted in the slot 1 according to the type of the board in the subsequent rack image. 2. When the main control board determines that the board type is the same as that of the board in the slot image, the main control board will receive the current one. Rack diagram message The frame number of the rack image is compared with the latest frame number of the rack image saved. Based on the comparison result, it is determined whether the board 1 has failed before. If the fault occurs before, the board 1 is sent to the front. The configuration information of the cached board 1.

The embodiment of the present disclosure can use the software to accurately detect the running fault of the board configuration packet (that is, the configuration information), such as the overall reset of the board, and the restart of the board application, and deliver the pre-cached configuration information to the existence. A board that has failed to run. That is, the embodiment of the present disclosure implements single board fault detection and self-recovery of configuration information in a distributed system.

After the main control board of the embodiment of the present disclosure detects the fault of the board, the configuration information of the board saved in advance can be sent to the board to ensure that the service can be restored. Has the following advantages:

1. It can detect the running failure of the board without relying on the special hardware circuit, which can reduce the cost and improve the flexibility and accuracy.

2. Solving the problem of CPU consumption and fault leakage detection caused by the common handshake mechanism;

3. The configuration information of the board that is lost due to the fault can be automatically restored.

It will be understood by those skilled in the art that all or part of the steps of the above embodiments may be implemented by a program to instruct related hardware, and the program may be stored in a computer readable storage medium, and the program is executed. When it is, step S101 to step S103 are included. The storage medium may be a ROM/RAM, a magnetic disk, an optical disk, or the like.

2 is a block diagram of a self-recovery device for a single-board configuration in a distributed system according to an embodiment of the present disclosure. As shown in FIG. 2, the main control board control module 10 and the main control board packet forwarding module 20 are included.

The main control board packet forwarding module 20 is configured to send the configuration information of each board to the corresponding board, and cache the configuration information of the corresponding board.

The main control board control module 10 is configured to determine whether the board has been faulty before the board according to the previous status information and the current status information of the board. Specifically, the main control board control module 10 parses the received rack image packet from the board to obtain the current state information of the board, and obtains the previous machine that parses the board before. The previous status information obtained and saved by the frame message. The main control board control module 10 determines whether the board type is changed according to the board type in the current status information, and if the board type changes, the board does not send the board to the board. Pre-cached configuration information. If the board type does not change, compare the current status information of the board with the previous status information to determine whether the board has failed before. Further, if the current status information If the rack image serial number is smaller than the rack image serial number in the previous state information, and the rack image serial number in the current state information is not equal to zero, it is determined that the board has failed before, Then, using the rack image serial number in the current state information, the rack image serial number in the previous state information saved by the main control board is updated.

If the main control board control module 10 determines that the board has failed in the preceding stage, the main control board packet forwarding module 20 sends the configuration information of the pre-cache to the board for the The board recovers the board business.

3 is a system architecture diagram of a distributed system according to an embodiment of the present disclosure. As shown in FIG. 3, the system includes a main control board, a backplane, and a plurality of boards (for example, a board A, a board B, and a single C). . The main control board and the board are connected through the backplane. The control plane and the management plane of the main control board pass the packet forwarding module (equivalent to the main control board packet forwarding module 20 in FIG. 2) to the corresponding The board sends configuration BPDUs to configure parameters and services for each board. The board runs the related board application under the configuration of the main control board.

The present disclosure adopts the following technical solutions:

The control program of the main control board (implementing the function of the main control board control module 10 in FIG. 2) sends the configuration packet to the designated board through the S interface through the packet forwarding module. The forwarding module (that is, the packet forwarding module) needs to cache the parameter configuration and service configuration packets sent to the board with the card address as the key, and can combine the configuration messages with the same command code.

The packet forwarding module is a process or a task running on the main control. When the running status information (that is, the status information) of the board changes, the packet forwarding module provides an interface for resending the configuration packet of the specified card. Go to the board.

The running status of the board is used to indicate the running status of the board, including three states: normal operation, abnormal operation, and inconsistent board type. If the running status of the board is changed from the running abnormal to the normal running, or the board type is inconsistent and the running status is normal, you need to notify the packet forwarding module to re-issue the board configuration packet.

4 is a schematic diagram of a state machine in which the main control board program determines the in-position state of the board in the embodiment of the present disclosure. As shown in FIG. 4, the main control board determines that the initial state of the board is normal, and then waits for the board to report newly. The S-port packet (that is, the rack-based packet) is parsed. The packet is parsed to obtain the board type and rack image serial number. If the type of the board is changed, the board type is inconsistent and waits for the newly reported rack port S packet. Otherwise, determine whether the rack number is increased. If the serial number of the rack is increased, the running status of the board is normal and waits for the newly reported rack interface S packet. Otherwise, it is determined whether the rack number of the rack is smaller and not 0. If the serial number is smaller than 0, the board is running abnormally and waits for the newly reported rack interface S-port packet. Otherwise, the frame number of the rack is smaller and 0. The running status is normal, and waits for the newly reported rack interface S port message.

That is to say, the board application enables the timer to periodically send the rack map S port message to the main control board. After receiving the rack image of the board, the control program of the main control board parses out the board type and rack image serial number information and compares it with the last saved value. If the board type is changed, the status of the board is inconsistent. If the current value (that is, the current rack image serial number) is greater than the previous value, the board is in the normal state. If the current value is present, If the value is less than the last saved value and the value is the overflow value of 0, it is determined that the board is in the normal state. If the current value is smaller than the last saved value and is not equal to the overflow value 0, it is determined that the board is in the abnormal state. After the above-mentioned determination is completed, the index number of the rack image that is saved on the main control board (that is, the rack image serial number) is updated to the latest reported value of the board.

If the board is in the normal state, that is, the running status is changed, and the current status is in the normal state, the board is abnormally restarted and the board configuration information is lost. Immediately notify the packet forwarding module to re-deliver the configuration of the board. This ensures that the configuration information required for the board is self-recoverable.

A S-port packet is a type of communication packet used to exchange messages between the main control board, the board, and between the main control board and the board.

The embodiments of the present disclosure can solve the reasons such as the overall reset of the board and the restart of the board application. The problem that the board configuration packet is lost.

The detailed process of how the main control board control program detects the running status of the board and resends the board configuration message is described in the following.

FIG. 5 is a flowchart of a packet forwarding module of a main control board according to an embodiment of the present disclosure. As shown in FIG. 5, the steps include:

Step S201: The message forwarding module waits for the control program configuration message of the main control board.

Step S202: The packet forwarding module receives the S interface configuration packet (that is, the configuration packet).

Step S203: The packet forwarding module sends the S interface configuration packet to the specified board.

Step S204: determining whether it is a registered message, if yes, executing step S205, otherwise performing step S201.

In the initialization phase, the configuration packet of the board, the command code, and the operator is a registered packet. For example, if the configuration packet of the board A is a registered packet, then in step S204, If the configuration packet is sent to board A, the packet is a registered packet.

Step S205: Whether it is a modification operation, if yes, step S206 is performed, otherwise step S207 is performed.

Step S206: Perform the merge processing on the S interface configuration message.

For example, if the parameter value of a configuration parameter is changed from 2000 to 1000, the S interface configuration packet is merged with the previously saved S interface configuration packet, so that the parameter value in the new S interface configuration packet is 1000. .

Step S207: Cache the S interface configuration message.

That is to say, the processing of the packet forwarding module of the main control board is: a packet forwarding module is specially designed on the main control board, and the module is an intermediate hub for the S-port packet interaction between the main control board control program and each single board program. The packet forwarding module can forward the S-port configuration packet. The interface can also be used to register the specified packet, the specified command code, and the specified operator. Only registered packets are cached. Provides a message merging function for packets whose operators are modified. Update the configuration information to the latest value. After the main control board control program sends the board configuration information to the packet forwarding module, the packet forwarding module first forwards the S interface packet to the board, and then judges the configuration report according to the command code and the operator in the S port packet. Whether the text has been registered. If the registration is done and the operator is modified, the merge and cache processing is performed; if the registration is performed and the operator is added, the cache processing is directly performed; if there is no registration, the direct processing is skipped. In addition, the packet forwarding module needs to provide an interface for all the S-port configuration packets that have been cached on the board to be delivered to the board.

FIG. 6 is a schematic diagram of a self-recovery process of a S-port configuration packet of a board according to an embodiment of the present disclosure. As shown in FIG. 6, the steps include:

Step S301: The main control board control program waits for the rack diagram message of the board.

Step S302: Receive and parse the rack map message.

Step S303: It is determined whether the rack image message of the board is received for the first time. If the step S304 is performed, otherwise step S305 is performed.

The board software of the card is used to query the board software entries. If the board software entry is not found, the rack image of the board is received for the first time.

Step S304: Create a board software entry of the board.

Step S305: Determine whether the type of the board changes. If the step S301 is performed, otherwise step S306 is performed.

Step S306: It is determined whether the current rack image serial number is smaller than the previous value. If the step S307 is performed, otherwise step S301 is performed.

Step S307: It is determined whether the current rack image serial number is an overflow value of 0. If the step S301 is performed, otherwise step S308 is performed.

Step S308: Notifying the packet forwarding module of the main control board to re-issue the S interface configuration packet of the board.

That is to say, the control program of the main control board is processed as follows: When the control program of the main control board receives the rack image message reported on the board for the first time, the software needs to create the software with the board address as the key. The entry is used to record the board information. The initial value of the board type in the entry is the value that is carried when the board reports the rack image for the first time. The online running status information of the board is initialized to normal operation, and the frame number of the rack is initialized to 1. After the control board of the main control board receives the packet of a single rack, the entry is queried by using the board address as the key. If the query fails, the corresponding board entry has not been created. You can create the corresponding board software entry in the above manner. If the query is successful, the board software has been created. The item information is compared, and the comparison process is described as follows. If the current board type is different from the previously saved board type, you can determine that the board running status is inconsistent. If the current serial number is greater than the saved value, the board is in the normal state. If the current serial number is smaller than the last saved value, the board is in the abnormal state. In this embodiment, the value of the serial number can ensure that the running device does not overflow for hundreds of years, so there is no need to consider the case where the serial number overflows. After the above comparison is completed, the board status change can be captured. After that, you need to update the serial number of the rack frame saved by the main control board to the last reported value. After the above judgment, the control program of the main control board can know the change of the operating state of the board. If the result of the judgment is that the board is in the in-position state and the current value is in the normal state, the board is abnormally restarted and the board configuration information is lost. You need to notify the packet forwarding module to re-issue the packet. The board is configured with packets to ensure that the configuration information required for the board is self-recoverable.

The processing of the board application is as follows: After the board is powered on, the board application enables a timer (for example, a 5s timer) to periodically send a rack image S-port packet to the main control board, where the S-port packet header is in the header. The information about the address of the main control board, the address of the board, and the serial number of the packet is used. The board address is used as the keyword of the board. In this embodiment, the message index number is a 32-bit unsigned number, and may also be set to 16-bit, 32-bit or 64-bit data according to the needs of the application. The serial number is initialized to 1, counting from 1 and then adding 1 every time it is reported.

Embodiments of the present invention also provide a storage medium including a stored program, wherein the program described above executes the method of any of the above.

Optionally, in this embodiment, the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a random access memory (Random). Access Memory (referred to as RAM), mobile hard disk, disk or optical disk, and other media that can store program code.

Embodiments of the present invention also provide a processor for running a program, wherein the program is executed to perform the steps of any of the above methods.

In summary, the embodiments of the present disclosure have the following technical effects:

The main control board of the embodiment of the present disclosure can accurately detect the running fault of the board, and then re-send the previously configured board configuration information to the corresponding board to ensure that the board service can be restored to normal. The board configuration information is used to ensure that the board configuration is restored when the board is reset and the board is restarted.

Although the present disclosure has been described in detail above, the present disclosure is not limited thereto, and various modifications may be made by those skilled in the art in accordance with the principles of the present disclosure. Therefore, modifications made in accordance with the principles of the present disclosure are to be understood as falling within the scope of the present disclosure.

Industrial applicability

As described above, the method and device for self-recovery of a single-board configuration in a distributed system provided by the embodiment of the present invention have the following beneficial effects: the main control board can accurately detect the loss of the configuration of the single-board, and then re-configure the pre-cached configuration information. The board is delivered to the board to restore the configuration information that has been lost on the board.

Claims

A self-recovery method for a single board configuration in a distributed system, comprising:

The main control board sends the configuration information of each board to the corresponding board, and caches the configuration information of the corresponding board.

The main control board determines whether the board has been faulty before the board according to the previous status information and the current status information of the board.

If it is determined that the board is faulty, the configuration information of the previous cache is sent to the board, so that the board can restore the board service.
The method according to claim 1, before the step of determining whether the board has failed before the board is determined according to the previous state information and the current state information of the board, the method further includes:

The main control board receives the rack image packet from the board, and parses the rack image packet to obtain current status information of the board.

The previous state information obtained and saved by parsing the previous rack image message of the board is obtained.
The method according to claim 1 or 2, wherein the step of determining, by the main control board, whether the board has failed beforehand according to the previous state information and the current state information of the board includes:

Determining, by the main control board, whether the type of the board changes according to the type of the board in the current state information;

If the board type does not change, compare the rack map serial number in the current status information with the rack map serial number in the previous status information;

Determining the board if the rack image sequence number in the current state information is smaller than the rack image sequence number in the previous state information, and the rack image sequence number in the current state information is not equal to zero A failure occurred before.
The method according to claim 3, wherein the main control board is based on the front of the board Updating the previous state information saved by the main control board by using the rack image serial number in the current state information, after the step of determining whether the board has failed in the previous state information and the current state information. The rack map serial number in .
The method of claim 3 further comprising:

If the type of the board is changed, the main control board does not send the configuration information of the previous cache to the board.
A single board configuration self-restoring device in a distributed system, comprising:

The packet forwarding module of the main control board is configured to send configuration information of each board to the corresponding board, and cache configuration information of the corresponding board.

The main control board control module is configured to determine whether the board has been faulty before the board according to the previous status information and the current status information of the board.

If the control board of the main control board determines that the board has failed in the preceding stage, the packet forwarding module of the main control board sends the configuration information of the pre-cache to the board for the single The board resumes the board business.
The apparatus according to claim 6, wherein the main control board control module is further configured to parse the received rack image message from the board to obtain current status information of the board, and obtain the previous parsing resolution. The previous status information obtained and saved by the previous rack image of the board.
The apparatus according to claim 6 or 7, wherein the main control board control module determines whether the type of the board changes according to the type of the board in the current status information, and if the type of the board does not change, compare the The rack map serial number in the current state information and the rack map serial number in the previous state information, if the rack map serial number in the current state information is smaller than the rack map serial number in the previous state information If the rack image sequence number in the current state information is not equal to zero, it is determined that the board has failed before.
The device according to claim 8, wherein the main control board control module is based on a single board Updating the previous state saved by the main control board by using the rack image serial number in the current state information after determining whether the board has failed in the previous state information and the current state information. The rack map serial number in the message.
The apparatus according to claim 8, wherein the main control board control module does not send the previously cached configuration information to the board when the board type is changed.
A storage medium, the storage medium comprising a stored program, wherein the program is executed to perform the method of any one of claims 1 to 5.