JP2010161727A - Apparatus for converting network device configuration information and method for converting configuration information - Google Patents

Abstract

The configuration information in a format specific to the model of the network device is converted without changing its meaning so that the configuration information can be interpreted in a network device having a different configuration information format.
An input configuration information storage unit that stores configuration information described in a format specific to a model of a network device, and a configuration information stored in the input configuration information storage unit that is specific to the model of another network device having a different format Conversion rule data storage means in which conversion rule data to be converted into configuration information described in the format is stored in advance, and configuration information stored in the input configuration information storage means is read out and stored in the conversion rule data storage means Conversion means for converting the read configuration information into configuration information in a format to be converted based on the conversion rule data stored in the output, and output configuration information storage for storing the converted configuration information output by the conversion means Means.
[Selection] Figure 1

Description

  The present invention relates to configuration information management technology for network devices such as routers and switches, and changes the meaning of the configuration information in a format specific to the network device model so that it can be interpreted by network devices with different configuration information formats. The present invention relates to a network device configuration information conversion device and a configuration information conversion method that perform conversion without any change.

  Management of configuration information in a large-scale network (new creation, change, revision management, etc.) is becoming increasingly difficult (Non-Patent Document 1). The configuration information is text or binary data for defining the behavior of network devices such as routers and switches, and is set by an operator who manages and operates the network. In Non-Patent Document 1, in addition to the scale of the network, the model diversity of network devices is a cause of difficulty. This is because the format and grammar of configuration information is specific to each model, so when an operator changes the behavior of many network devices at the same time, it takes considerable effort to create and change configuration information, and human error occurs. Because it is easy.

  In order to alleviate such difficulties, there have been conventionally efforts to unify and standardize configuration information such as Netconf (Non-Patent Document 2) and Netmod (Non-Patent Document 3). There is also an approach to generate configuration information specific to the model of a network device from unified configuration information and behavior setting policy (policy) description of the entire network, as in PRESTO (Non-patent Document 4).

L. Sanchez et al., “Requirements for Configuration Management of IP-based Networks,” IETF RFC 3139, June 2001. R. Enns, “NETCONF Configuration Protocol,” IETF RFC 4741, December 2006. D. Partain, et al., "NETCONF Data Modeling Language (netmod) Charter," http://www.ietf.org/html.charters/netmod-charter.html, August 2008. William Enck, et al., “Configuration Management at Massive Scale: System Design and Experience,” Proceedings of 2007 USENIX Annual Technical Conference, pp.73-86, April 2007.

  However, the efforts described in Non-Patent Documents 2 and 3 are aimed at making every network device compatible with the configuration information in a unified format, and the configuration information of various network devices already distributed in large numbers. There is a problem that it is not effective for management. Further, the approach described in Non-Patent Document 4 assumes only one-way conversion that generates configuration information unique to a model from configuration information in a unified format. For example, when changing the behavior of the entire network, the operator only changes the configuration information in a unified format, and the management computer automatically generates model-specific configuration information, reducing labor and human error. However, there is a problem that it is not possible to reversely convert the model-specific configuration information into the unified format configuration information.

  In addition, due to the problems of Non-Patent Document 4, for example, when configuration information is urgently changed for a countermeasure against a failure at a site where a network device is installed, the changed content is transferred to another device or a management computer. It becomes difficult to reflect in a unified format. Further, in common with Non-Patent Documents 2, 3, and 4, there is a problem that the operator needs to newly learn about the unified configuration information and policy description.

  The present invention has been made in view of such circumstances, and does not change the meaning of the configuration information in a format specific to the model of the network device so that the configuration information can be interpreted in a network device having a different configuration information format. It is an object of the present invention to provide a network device configuration information conversion device and a configuration information conversion method that can be converted.

  The present invention relates to an input configuration information storage unit that stores configuration information described in a format specific to a model of a network device, and the configuration information stored in the input configuration information storage unit as a model of another network device having a different format. Conversion rule data storage means in which conversion rule data for conversion into configuration information described in a specific format is stored in advance, and the configuration information stored in the input configuration information storage means is read out, and the conversion rule data storage Based on the conversion rule data stored in the means, the read out configuration information is converted into configuration information in a format to be converted and output, and output for storing the converted configuration information output by the conversion means And a configuration information storage unit.

  In the present invention, the conversion means converts the configuration information before conversion described in a format specific to the model of the network device into configuration information described in a predetermined unified format, and the unified format The configuration information is converted by executing a second conversion process for converting the configuration information described in (1) into converted configuration information described in a format specific to the model of the network device to be converted. It is characterized by that.

  In the present invention, when the conversion rule data of the configuration information to be converted is not stored in the conversion rule data storage unit, the conversion unit outputs error information indicating that the conversion process of the configuration information could not be performed. It is characterized by doing.

  The present invention edits the configuration information stored in the output configuration information storage unit, stores the edited result information in the output configuration information storage unit, and stores the edited configuration information in the output configuration information storage unit. Conversion rule generation means for generating the conversion rule data based on the edited configuration information and the error information, and additionally storing the generated conversion rule data in the conversion rule data storage means. It is characterized by that.

  The present invention relates to an input configuration information storage unit that stores configuration information described in a format specific to a model of a network device, and the configuration information stored in the input configuration information storage unit as a model of another network device having a different format. Network device configuration information comprising conversion rule data storage means for storing conversion rule data for conversion into configuration information described in a unique format, and output configuration information storage means for storing the converted configuration information An information conversion method in a conversion device, wherein the configuration information stored in the input configuration information storage unit is read out, and the configuration is read out based on conversion rule data stored in the storage unit in the conversion rule data storage unit A conversion step of converting the information into configuration information in a format to be converted and outputting, and a post-conversion output from the conversion step And having an output configuration information storage step of storing the formed information to the output configuration information storage unit.

  According to the present invention, the conversion step includes a first conversion step for converting configuration information before conversion described in a model-specific format of the network device into configuration information described in a predetermined unified format, and the unified format. The configuration information is converted by executing a second conversion step for converting the configuration information described in (1) into converted configuration information described in a format specific to the model of the network device to be converted. It is characterized by that.

  In the present invention, when the conversion rule data of the configuration information to be converted is not stored in the conversion rule data storage means, the conversion step outputs error information indicating that the conversion processing of the configuration information could not be performed. It has the step to perform.

  The present invention includes an editing step of editing the configuration information stored in the output configuration information storage unit, and storing information of an editing result in the output configuration information storage unit, and the output configuration information storage unit A conversion rule generation step of generating the conversion rule data based on the edited configuration information and the error information, and additionally storing the generated conversion rule data in the conversion rule data storage unit It is characterized by that.

  According to the present invention, it is possible to convert only the format of the configuration information of a network device such as a router or a switch without changing the semantic content so that the network device having a different format of the configuration information can interpret it. . As a result, the network operator can automatically convert the change contents to the unified format configuration information even when the configuration information is urgently changed to prevent trouble at the site where the network equipment is installed. Therefore, it becomes easy to reflect the changed contents on other devices and the unified format on the configuration information management server. Further, it is not necessary for the operator to newly become familiar with the configuration information in the unified format.

It is a block diagram which shows the structure of one Embodiment of this invention. It is a flowchart which shows operation | movement of the apparatus shown in FIG. It is explanatory drawing which shows the table structure of the conversion rule data storage part 9 shown in FIG. It is explanatory drawing which shows the example of a conversion process of structure information. It is a flowchart which shows the conversion processing operation example of structure information.

  Hereinafter, a network device configuration information conversion apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the embodiment. The network device configuration information conversion device is a device configured by a computer device. In this figure, reference numeral 1 denotes a conversion processing unit that performs processing for converting configuration information. Reference numeral 2 denotes an input unit composed of a keyboard, a mouse, and the like. Reference numeral 3 denotes a display unit configured by a display device. Reference numeral 4 denotes a configuration information input unit that inputs configuration information to be converted. Reference numeral 5 denotes an analysis conversion unit that analyzes the input configuration information and performs automatic conversion processing in order to convert the input configuration information into configuration information according to another model. Reference numeral 6 denotes an error output unit that outputs information that could not be converted as an error when the configuration information to be converted is automatically converted. Reference numeral 7 denotes a conversion rule for generating a conversion rule so that the configuration information in error can be automatically converted by referring to the automatically converted configuration information and the configuration information manually corrected / edited according to the error output. It is a generation part.

  Reference numeral 8 denotes an input configuration information storage unit that stores configuration information input from the configuration information input unit 4. Reference numeral 9 denotes a conversion rule data storage unit in which conversion rule data to be referred to when the analysis conversion unit 5 executes the conversion process is stored in advance, and the configuration information described in a model-specific format is used in a predetermined unified format. Conversion rule data for conversion to the described configuration information and conversion rule data for conversion from the configuration information described in a predetermined unified format to the configuration information described in a model-specific format are stored. Reference numeral 10 denotes an automatic conversion data storage unit for storing information obtained as a result of performing processing for analyzing the configuration information read by the analysis conversion unit 5 from the configuration information storage unit 8 and converting it into configuration information corresponding to another model. is there. Reference numeral 11 denotes an error data storage unit that stores error information output from the error output unit 6. Reference numeral 12 denotes an output configuration information storage unit that reads information stored in the automatic conversion data storage unit 10, performs manual final correction / editing as necessary, and stores the converted configuration information.

  Here, the conversion rule data stored in the conversion rule data storage unit 9 will be described with reference to FIG. FIG. 3 is a diagram illustrating a table structure of the conversion rule data storage unit 9. In the conversion rule data, as shown in FIG. 3, a configuration information element for each corresponding model is associated with each configuration information element in a unified format. In FIG. 3, configuration information elements B1, C1, and D1 specific to the model are associated with the configuration information element A1 in a unified format. Each of the configuration information elements A1, B1, C1, and D1 is configured by at least one command or the like. Even when the configuration information element A1 is configured by one command, the corresponding configuration information element B1 that is unique to each model. , C1, and D1 are not limited to one command, and may be a plurality of command strings. Even if the configuration information element in the unified format is composed of a plurality of command strings, the configuration information element unique to each model may be composed of one command. In other words, the unified format and the model-specific configuration information element can be converted only in format without changing the semantic content so that network devices having different configuration information formats can be interpreted. In addition, only two configuration information elements B2 and D2 are associated with the configuration information element A2. This is because, for the model C, the configuration information element corresponding to the configuration information element A2 in the unified format is converted into a conversion rule. It means that it is not stored in the data storage unit 9.

  In the following description, it is assumed that the configuration information of the IOS compatible router model of Cisco is converted as an example of the model of the network device. In these models, the configuration information can be handled as a text file. Further, the configuration information in the unified format will be described as being described using XML (eXtensible Markup Language) as shown in Non-Patent Document 3.

  Next, the operation of the network device configuration information conversion apparatus shown in FIG. 1 will be described with reference to FIG. First, the operator uses a dedicated GUI (Graphical User Interface) or CLI (Command Line Interface) or a general-purpose text editor prepared on a device that manages the configuration information, or configuration information in a model-specific or unified format. Create new or change. Alternatively, the network device is accessed using a serial console or the telnet / ssh protocol, and the configuration information unique to the model is directly changed.

  Next, when the operator operates the input unit 2 to start the configuration information conversion process, the conversion processing unit 1 displays “conversion method”, “router model”, “unified format configuration” on the display unit 3. A message for inputting “information XML file name” and “model-specific configuration information file name” is displayed. Here, the operator operates the input unit 2 to input “conversion method”, “router model”, “unified format configuration information XML file name”, and “model-specific configuration information file name”. “Conversion method” designates the content of conversion processing for either converting from a model-specific format to a unified format, or converting from a unified format to a model-specific format. In the “router model”, the model name of the network device corresponding to the model-specific format of the conversion source or conversion destination is designated.

  The conversion processing unit 1 reads the “conversion method”, “router model”, “unified format configuration information XML file name”, and “model-specific configuration information file name” input in the input unit 2 and stores them internally (steps). S1). This input processing is transferred from the device managing the configuration information to the conversion processing unit 1 via a dedicated GUI (Graphical User Interface) or CLI (Command Line Interface) prepared on the device managing the configuration information. It may be. The conversion processing unit 1 passes the input file name to the configuration information input unit 4. At this time, when the conversion method is “convert from model-specific format to unified format”, the model-specific configuration information file name is passed as the input file name. When the conversion method is “convert from the unified format to the model-specific format”, the unified format configuration information XML file name is passed as the input file name.

  Next, the configuration information input unit 4 reads the configuration information from the file specified by the received input file name and stores it in the input configuration information storage unit 8. Then, the configuration information input unit 4 notifies the analysis conversion unit 5 when the configuration information is normally read. Further, the conversion processing unit 1 generates an output file in the automatic conversion data storage unit 10. At this time, when the conversion method is “convert from model-specific format to unified format”, a file with the input unified format configuration information XML file name is generated. When the conversion method is “convert from a unified format to a model-specific format”, a file with the input model-specific configuration information file name is generated (step S2).

  Upon receiving a notification that the configuration information reading process has been completed from the configuration information input unit 4, the analysis conversion unit 5 sequentially reads configuration information elements in the configuration information stored in the input configuration information storage unit 8 (step S3). . Then, the analysis conversion unit 5 refers to the conversion rule data stored in the conversion rule data storage unit 9 and determines whether or not the read configuration information element can be converted (steps S4 and S5). If conversion is possible as a result of this determination, the analysis conversion unit 5 converts the read configuration information element based on the conversion rule (step S6). Then, the analysis conversion unit 5 writes the configuration information resulting from the conversion into the output file in the automatic conversion data storage unit 10 (step S7). Here, the configuration information resulting from the previous conversion may be a single configuration information element or a plurality of configuration information elements.

  On the other hand, if conversion is not possible, the analysis conversion unit 5 passes the read configuration information element to the error output unit 6. In response to this, the error output unit 6 associates the delivered configuration information element with the information indicating the occurrence of the error, and writes it in the error data storage unit 11 (step S8).

  Next, the analysis conversion unit 5 determines whether or not the entire configuration information stored in the input configuration information storage unit 8 in step S2, that is, all the configuration information elements has been processed (step S9). If not, the process returns to step S3 to repeat the process. On the other hand, when all the processes have been processed, the process ends. By this operation, the converted configuration information is written in the output file in the automatic conversion data storage unit 10. Further, the configuration information that could not be converted by the conversion rule is written as error information in the error data storage unit 11.

  Next, with reference to FIG. 4 and FIG. 5, an operation for converting configuration information described in a model-specific format into configuration information described in a unified format will be described with a specific example. FIG. 4 is a diagram illustrating an example of a configuration information element described in a conversion-source model-specific format and a configuration information element described in a unified format after conversion. Here, an interface command and its attribute value of an IOS-compatible router manufactured by Cisco will be described as an example of the configuration information element in the model-specific format. As shown in this example, the configuration information element is generally composed of a main command such as [Interface] (hereinafter, “main command”) and accompanying attribute values (encapsulation, ip vrf, ip address, etc.). is there. FIG. 5 is a flowchart showing the operation of converting the interface command specific to the model into a unified format.

  First, the analysis conversion unit 5 acquires data for one line from the read configuration information (step S11), and checks the presence of a specified command name in the data (step S12). Here, the designated command name refers to the main command name of the configuration information element that can be converted in the conversion rule data as shown in FIG. Here, it is determined whether or not the main command [interface] exists (step S13). When the main command [interface] exists, the analysis conversion unit 5 refers to the conversion rule, holds the XML element information [<interface>] corresponding to [interface] as output information, and reads the read information The main command [interface] is deleted from (Step S14), and the Interface class package is called (Step S14). Here, the class package refers to a program module describing an individual processing rule for converting each configuration information element.

  Next, when the Interface class package is called, the analysis conversion unit 5 executes individual processing in the Interface class package, interprets encapsulation, ip vrf, ip address, etc., and outputs to VlanNo, IPAddress-static, Forwarding, etc. Conversion is performed (step S15). Then, the analysis conversion unit 5 holds the XML element information [</ interface>] corresponding to [interface] and the individual processing result as output information (step S16).

  Next, the analysis conversion unit 5 determines whether or not all of the read information has been checked (step S17), and if not, returns to step S11 and repeats the process. On the other hand, if completed, the held output information is written to the designated output file (step S18). With this processing operation, the configuration information described in the model-specific format of the conversion source shown in FIG. 4 can be converted into the configuration information described in the unified format after conversion.

  Next, when the conversion process ends, the analysis conversion unit 5 notifies the conversion processing unit 1 that the conversion process has ended. In response to this, the conversion processing unit 1 displays a message indicating that the conversion processing has ended on the display unit 3. Here, when the operator operates the input unit 2 to give an instruction to display the converted configuration information, the conversion processing unit 1 displays the converted configuration stored in the automatic conversion data storage unit 10. The information and the error information stored in the error data storage unit 11 are read out and displayed on the display unit 3. The operator refers to the displayed configuration information and error information, and if there is no problem, operates the input unit 2 and gives an instruction to save the converted configuration information. In response to this, the conversion processing unit 1 reads the converted configuration information stored in the automatic conversion data storage unit 10 and stores it in the output configuration information storage unit 12. Here, the configuration information stored in the output configuration information storage unit 12 is the configuration information to be obtained.

  On the other hand, when the operator operates the input unit 2 to give an instruction to edit the converted configuration information, the conversion processing unit 1 reads the converted configuration information stored in the automatic conversion data storage unit 10 and Then, the error information stored in the error data storage unit 11 is read again, and the text editor function is activated. Here, the operator refers to the error information, describes the configuration information that could not be converted in a converted format by a text editor, and adds it to the converted configuration information. When the operator performs an overwrite save operation when the editing is completed, the conversion processing unit 1 stores the edited configuration information in the output configuration information storage unit 12. Here, the configuration information stored in the output configuration information storage unit 12 is the configuration information to be obtained. When the storage of the configuration information is completed, the conversion processing unit 1 instructs the conversion rule generation unit 7 to generate a conversion rule. This conversion rule generation instruction information includes information of “conversion method”, “router model”, “unified format configuration information XML file name”, and “model specific configuration information file name”.

  In response to this, the conversion rule generation unit 7 receives the configuration information after automatic conversion stored in the automatic conversion data storage unit 10, the configuration information after editing stored in the output configuration information storage unit 12, and an error. The error information stored in the data storage unit 11 is read. And the conversion rule production | generation part 7 calculates | requires the difference of the structure information after automatic conversion, and the structure information after edit. The difference configuration information corresponds to the configuration information after conversion of the configuration information included in the error information that could not be converted. The conversion rule generation unit 7 generates new conversion rule data based on the obtained difference information and error information. Then, the conversion rule generation unit 7 writes the generated conversion rule data into the conversion rule data storage unit 9. By this operation, the conversion rule data of the configuration information that could not be converted is newly added to the conversion rule data storage unit 9, and conversion is possible at the next conversion. In this way, conversion rules can be automatically generated based on the difference between the result edited by the operator and the result of automatic conversion and error information, thus reducing the creation of conversion rule data in stages. It becomes possible.

  In the above description, the processing operation of converting from the model-specific format to the unified format, or converting from the unified format to the model-specific format has been described. This can be done by converting from B to a unified format and from this unified format to model C.

  As the format of the configuration information used as the unified format, as in the above example, a format such as Non-Patent Document 3 defined so as not to depend on the model of the network device may be used, or a predetermined network may be used. The configuration information format (for example, the configuration information format of a specific model A) may be used. In either case, the configuration information described in any one of the unified formats is stored in the “unified format data” of the conversion rule data storage unit 9 shown in FIG. 3, and the configuration information in the predetermined unified format is stored in the configuration information. On the other hand, “model-specific data” described in the format of another network device may be stored in association with each other. The conversion from the configuration information of the model B to the configuration information of the model C can be performed by first converting from the model B to the unified format and then converting from the unified format to the model C.

  As described above, the configuration information of network devices such as routers and switches is converted by referring to the conversion rule data, so that the model-specific format is changed to the unified format without changing the semantic content of the configuration information. In addition, mutual conversion can be automatically performed from a unified format to a format specific to each model. As a result, the network operator can automatically convert the change contents to the unified format configuration information even when the configuration information is urgently changed to prevent trouble at the site where the network equipment is installed. Therefore, it becomes easy to reflect the changed contents on other devices and the unified format on the configuration information management server. Further, it is not necessary for the operator to newly learn the configuration information in the unified format, and the burden on the operator can be reduced.

  Note that a program for realizing the functions of the conversion processing unit 1, the configuration information input unit 4, the analysis conversion unit 5, the error output unit 6, and the conversion rule generation unit 7 in FIG. 1 is recorded on a computer-readable recording medium. The configuration information conversion process may be performed by causing the computer system to read and execute the program recorded on the recording medium. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer system” includes a WWW system provided with a homepage providing environment (or display environment). The “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a storage device such as a hard disk built in the computer system. Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, those holding programs for a certain period of time are also included.

  The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

  DESCRIPTION OF SYMBOLS 1 ... Conversion processing part, 2 ... Input part, 3 ... Display part, 4 ... Configuration information input part, 5 ... Analysis conversion part, 6 ... Error output part, 7 ... Conversion rule generation unit, 8 ... input configuration information storage unit, 9 ... conversion rule data storage unit, 10 ... automatic conversion data storage unit, 11 ... error data storage unit, 12 ... output Configuration information storage

Claims (8)

Input configuration information storage means for storing configuration information described in a format specific to the model of the network device;
Conversion rule data storage means in which conversion rule data for converting the configuration information stored in the input configuration information storage means into configuration information described in a model-specific format of another network device having a different format is stored in advance. When,
The configuration information stored in the input configuration information storage unit is read, and the read configuration information is converted into configuration information in a format to be converted based on the conversion rule data stored in the conversion rule data storage unit. Conversion means for outputting;
An output configuration information storage unit that stores the converted configuration information output by the conversion unit. The converting means converts a configuration information before conversion described in a format specific to the model of the network device into configuration information described in a predetermined unified format;
A second conversion process for converting the configuration information described in the unified format into the converted configuration information described in a format specific to the model of the network device to be converted; The network device configuration information conversion device according to claim 1, wherein the conversion is performed.   When the conversion rule data of the configuration information to be converted is not stored in the conversion rule data storage unit, the conversion means outputs error information indicating that the conversion processing of the configuration information could not be performed. The network device configuration information conversion device according to claim 2. Editing means for editing the configuration information stored in the output configuration information storage means, and storing information of the editing result in the output configuration information storage means;
The conversion rule data is generated based on the edited configuration information stored in the output configuration information storage unit and the error information, and the generated conversion rule data is additionally stored in the conversion rule data storage unit The network device configuration information conversion device according to claim 3, further comprising: a conversion rule generation means for performing the conversion. Input configuration information storage means for storing configuration information described in a format specific to the model of the network device, and configuration information stored in the input configuration information storage means in a format specific to the model of another network device having a different format Configuration in a network device configuration information conversion device comprising conversion rule data storage means for storing conversion rule data for conversion into described configuration information in advance, and output configuration information storage means for storing the converted configuration information An information conversion method,
The configuration information stored in the input configuration information storage unit is read, and the read configuration information is converted into configuration information in a format to be converted based on the conversion rule data stored in the conversion rule data storage unit. A conversion step to output;
A configuration information conversion method comprising: an output configuration information storage step of storing the converted configuration information output by the conversion step in the output configuration information storage means. The conversion step includes: a first conversion step for converting configuration information before conversion described in a model-specific format of the network device into configuration information described in a predetermined unified format;
Performing a second conversion step of converting the configuration information described in the unified format into the configuration information after conversion described in a format specific to the model of the network device to be converted; 6. The configuration information conversion method according to claim 5, wherein conversion is performed.   If the conversion rule data of the configuration information to be converted is not stored in the conversion rule data storage unit, the conversion step includes a step of outputting error information indicating that the conversion processing of the configuration information could not be performed. The configuration information conversion method according to claim 6. An editing step of editing the configuration information stored in the output configuration information storage means, and storing information of an editing result in the output configuration information storage means;
The conversion rule data is generated based on the edited configuration information stored in the output configuration information storage unit and the error information, and the generated conversion rule data is additionally stored in the conversion rule data storage unit The configuration information conversion method according to claim 7, further comprising: a conversion rule generation step.

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