JP2001320368A - Mib-managing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an MIB(management information base) managing device for efficiently managing an exchange by extracting information required for the management of the exchange from station data, without the intervening of a human being and reflecting it on MIB. SOLUTION: A station data analysis part 41 extracts information required, when a network monitor controller manages the exchange from inputted station data 100, classifies extracted information, generates a constitution information managing file 200 at every classification and stores the constitution information managing file 200 in a constitution information managing file storage part 42. A constitution information MIB setting part 43 converts the constitution information managing file 200 stored in the constitution information managing file storage part 42 into of a format following an interface and transmits it to a MIB 44. Thus, information in the constitution information managing file 200 is made to reflect on the MIB 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network management apparatus for managing a network having exchanges, which provides information to be referred to when managing the network.
The present invention relates to an MIB management device that manages IB.

[0002]

2. Description of the Related Art As a device for managing a communication network composed of a plurality of exchanges, there is a network monitoring and control device. This network monitoring and control apparatus manages transmission path end point information, path end point information, and the like, which are information necessary for controlling the exchange, by using an MIB (Management Information Bass) as a management database.
e), which controls and manages the network based on this information. Then, when a network abnormality is detected, the detected abnormality is displayed on the display unit, and the operator is notified of the abnormality.

Conventionally, for information necessary for controlling an exchange reflected in the MIB, for example, transmission line end point information, path end point information, etc., refer to a design drawing synchronized with station data set in the exchange. By doing, M
It was reflected in IB. Specifically, the operator first extracts information necessary for controlling the exchange from the office data with reference to the design drawing, and inputs the extracted information from the setting screen, so that the information is reflected in the MIB. . Here, the office data is data required when the exchange establishes a communication network, and is a binary file generated in a format that the exchange can easily understand. Then, the exchange connects to another exchange based on the station data and establishes a communication network. On the other hand, the design drawing is a display of the station data which can be easily understood by a human.

[0004] As described above, conventionally, a human has been involved in inputting information into the MIB, and there has been a problem that it takes time to set configuration information of the network monitoring and control device. In addition, due to erroneous input of information or the like, inconsistency may occur in information held between the exchange and the network monitoring and control device, resulting in a possibility of malfunction.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and extracts information necessary for management of an exchange from office data without human intervention, and reflects the information in the MIB. MI that realizes efficient exchange management
It is intended to provide a B management device.

[0006]

In order to achieve the above object, the present invention provides a network management apparatus (network monitoring and control apparatus 50 in FIG. 1) for managing a network comprising at least one switch. That manages the MIB that provides the information to be referenced at the time of
In the B management apparatus, station data necessary for realizing the operation of the exchange (station data 100 created by the exchange station data creation apparatus 20 in FIG. 1; the office data in this case operates the exchange). May be an audit file that contains all the information for
A difference file consisting of only the difference from the information currently set in the exchange may be input), and information necessary for managing the exchange is extracted from the station data, and the configuration information management is performed. A station data analysis unit (station data analysis unit 41 in FIG. 3) for creating a file, and the configuration information management file created by the station data analysis unit is stored in the MI
And a configuration information MIB setting unit (configuration information MIB setting unit 43 in FIG. 3) for reflecting the configuration information in B.

In the above invention, the configuration information M
The IB setting means is a management object (MO) for managing the configuration information management file by the network management device.
The format is converted to a format that can be easily reflected to the MIB and stored in the MIB. Specifically, in the above invention, the station data analysis means classifies information extracted from the station data, and creates a configuration information management file for each classification. In this way, the exchange can be efficiently managed by extracting the input station data into a format that is easy to reflect on the management object, that is, extracting only the information necessary for management, and further extracting the extracted information into a file for each classification. be able to.

Further, the present invention provides a configuration information management file storage unit (configuration information management file storage unit 42 in FIG. 5) for storing the configuration information management file created by the station data analysis unit, A reading unit for reading a predetermined configuration information management file from a management file storage unit, a configuration information management file (200) read by the reading unit, and a configuration information management file created by the station data analysis unit are input. And a difference extracting means (difference extracting unit 45 in FIG. 5) for extracting a difference between the two and creating a difference configuration information management file, and a failure has occurred in either the exchange or the network management device. In such a case, the reading means reads the failed communication from the configuration information management file storage means. Reading the configuration information management file corresponding to the exchange, the office data analysis means manages the exchange by the network management device from the office data having the same information as the information currently set in the exchange. , And creates a configuration information management file for comparison (300).
The configuration information management file read by the reading means is compared with the comparison configuration information management file created by the station data analysis means, and a difference configuration information management file (400) is created from the difference between the two. The configuration information MIB setting unit reflects the difference configuration information management file created by the difference extraction unit in the MIB.

[0009] Further, the invention is characterized in that the office data input to the office data analysis means is an audit file including all data for operating the exchange.

The present invention also relates to a MIB management method for managing a MIB for providing information to be referred to at the time of network management to a network management device for managing a network comprising at least one switch, The station data necessary for realizing the operation is input, and information necessary for managing the exchange is extracted from the station data, a configuration information management file is created, and the configuration information management file is created. Is reflected in the MIB.

Further, according to the present invention, the configuration information management file is stored, and when a failure occurs in either the exchange or the exchange management device, the information set in the exchange at the present time is stored. Information necessary for the network management device to manage the exchange is extracted from station data having the same information, a comparison configuration information management file is created, and a plurality of stored configuration information management files are stored. Extracting a configuration information management file corresponding to the exchange from the file, comparing the configuration information management file for comparison with the configuration information management file,
A difference configuration information management file is created from the difference between the two, and the difference configuration information management file is reflected in the MIB.

According to the present invention, a network management apparatus for managing a network comprising at least one switch is provided with a computer-readable recording medium storing an MIB management program for managing an MIB for providing information to be referred to in the network management. In a possible storage medium, the program is inputted with office data required to realize the operation of the exchange, and extracts information necessary to manage the exchange from the office data, A computer-readable recording medium that records a program that causes a computer to create a configuration information management file and reflect the configuration information management file in the MIB.

[0013] In the above invention, the configuration information management file is stored, and when a failure occurs in either the exchange or the exchange management apparatus, the information set in the exchange at the present time is stored. Information necessary for the network management device to manage the exchange is extracted from station data having the same information, a comparison configuration information management file is created, and a plurality of stored configuration information management files are stored. Extracting a configuration information management file corresponding to the exchange from the file, comparing the configuration information management file for comparison with the configuration information management file,
A computer-readable recording medium that records a program that causes a computer to create a difference configuration information management file from the difference between the two and reflect the difference configuration information management file in the MIB.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the exchange management system of the present invention. In the figure, first, the exchange station data creation device 20
Creates station data composed of information necessary for operating the switch, and outputs it to the exchange monitoring and control device 30. The exchange monitoring and control device 30 sets the received office data in the exchange 10 and outputs the data to the MIB management device 40.

The exchange 10 has its hardware composed of a plurality of components such as a control unit, a signal processing unit, a line processing unit, and a line interface unit. The office data includes various settings for these components. Items are listed.

FIG. 2 shows an example of the station data. As shown in FIG. 2, the station data 100 includes a component area 60 in which each component of the corresponding hardware is described, and a setting item 70 provided for each component. The actual station data is composed of these elements by a binary file in a format suitable for the exchange. The exchange 10 establishes a network based on these station data entered by the exchange supervisory control device 30. Note that this station data 100 is the exchange 1
It may be an audit file containing all the data necessary for the operation of No. 0, or a difference file composed of the differences of the station data set in the exchange 10.

Returning to FIG. 1, when office data is input from the exchange monitoring / control device 30 to the MIB management device 40, the MIB
The management device 40 determines that the exchange 1
Information necessary for the management of 0 is extracted and reflected in the MIB.
Here, the MIB is a network monitoring database that stores information that can grasp the status of the device to be monitored (the exchange 10 in the present embodiment). The MIB stores not only the setting information of the exchange 10 but also the operation status after the setting.

The network monitoring and control device 50
Monitors and controls the exchange 10 based on the above-mentioned MIB information. More specifically, a command is sent to the exchange 10, and if a failure occurs in the exchange 10, the failure is quickly detected, and a message indicating the occurrence of the failure is displayed on the display unit so that the operator can perform the operation. Notify the abnormality.

Next, the processing performed by the MIB management apparatus 40 will be described in detail with reference to FIG. FIG.
FIG. 2 is a block processing diagram showing a process performed by the MIB management device 40 shown in FIG. Note that here, station data 1
00, an audit file including all data necessary for operating the exchange 10 is stored in the MIB.
A case where the information is input to the management device 40 will be described.

First, when the station data 100 is sent from the exchange monitoring / control device 30 of FIG. 1 to the MIB management device 40,
The station data 100 is input to the station data analyzer 41 in the MIB management device 40 shown in FIG. Station data analysis unit 4
Reference numeral 1 denotes a managed object (MO: Managed Obje) used by the network monitoring control device 50 for the input station data.
ct) and output it in a format that can be easily reflected.

More specifically, the station data analysis unit 41 first extracts information necessary for the network monitoring and control device 50 to manage the exchange 10 from the received station data, and further extracts the extracted information. Classification is performed, and a configuration information management file 200 is created for each classification. Details of the configuration information management file 200 will be described with reference to FIG.

FIG. 4 is a diagram showing a procedure for generating the configuration information management file 200 from the station data 100. In this figure, the station data 100 is the same as that shown in FIG. The station data analysis unit 41
First, from the station data 100, information necessary for management of the exchange 10, that is, an item enclosed by a thick frame in this case, is extracted. Here, examples of the information to be extracted include transmission line end point information, path end point information, and the like. Then, the station data analysis unit 41 classifies the extracted items, and creates a configuration information management file 200 for each classification.

The configuration information management file 200 includes an intermediate file and a difference information file. The intermediate file is made up of each setting item set in the component corresponding to each component name of the hardware, while the difference information file is in the state when the station data 100 is set in the intermediate file, that is, , Addition, change, deletion, unchanged, and the like. Note that the configuration information management file 200 is actually configured as a binary file similarly to the station data.

As described above, when the station data analysis unit 41 creates the configuration information management file 200, the station data analysis unit 41 stores the configuration information management file 200 in the configuration information management file storage unit 42.
To store.

Next, the configuration information MIB setting unit 43 stores the configuration information management file 200 stored in the configuration information management file storage unit 42 in the MIB 44. Specifically, the configuration information MIB setting unit 43 converts the configuration information management file 200 into a format conforming to an interface used as an access unit to the MIB 44, and sends the converted configuration information management file 200 to the MIB 44. , MIB44. As this interface, a general CMIS interface (Common Management Information Service) may be used, or a write-only interface may be used, and this interface is not limited.

Next, the station data 100 of the difference file is M
A case where the information is input to the IB management device 40 will be described.
In this case, the station data analysis unit 41 reads the configuration information management file 200 corresponding to the station data 100 of the input difference file from the configuration information management file storage unit 42, and reads the read configuration information management file 200 and the input configuration information management file 200. Based on the difference file station data 100, a configuration information management file 200 reflecting the contents of the input difference file is created. Then, the configuration information management file 200 is stored in the configuration information management file storage unit 42 again. Further, the configuration information MIB setting unit 43 reflects the configuration information management file 200 stored in the configuration information management file storage unit 42 in the MIB 44. This allows
Even when the station data of the difference file is input,
The MIB management device 40 can respond.

Next, the MI according to the second embodiment of the present invention will be described.
The B management device will be described with reference to FIG. The MIB management device 40 according to the second embodiment is the same as the MIB management device 40 shown in FIG.
Although the configuration is substantially the same as that of the MIB management device 40 according to the first embodiment, the difference is that a difference extraction unit 45 is further provided. By providing the difference extracting unit 45, it is possible to promptly cope with a mismatch between the information set in the exchange 10 and the information set in the MIB 44.

Specifically, when a failure occurs in the exchange 10,
Information (configuration information such as transmission line end point information and path end point information) set in the exchange 10 when the system is recovered from the failure.
Returns to the past state, or MIB
When the management device 40 is started up with backup information due to a disk failure or the like and information about the exchange 10 (transmission line end point information, path end point information, signal line end point information, etc.) returns to a past state, etc., it is set to the exchange 10. There is a mismatch between the stored information and the information stored in the MIB 44 in the MIB management device 40. As a result, the network monitoring and control device 50 becomes inoperable, and the exchange 10 cannot be managed.

The MIB management apparatus according to the second embodiment
As described above, information set in the exchange 10 and
When a mismatch occurs between the information set in the MIB 44 and the information set in the MIB 44, the information of the two is matched so that the network can function normally.

Hereinafter, the function of the MIB management apparatus 40 according to the second embodiment will be described with reference to FIGS. First, the information set in the exchange 10 and the MI
If there is a mismatch between the information set in the MIB 44 in the B management device 40 and the operator of the MIB monitoring device 40, the operator of the A request is made to create station data having the same information as that of the existing station data. The station data requested here is the station data of the audit file. The operator of the exchange station data creation device 20 creates the office data of the audit file in response to this request, and transmits this to the office data analysis unit 41 in the MIB management device 40 via the exchange monitoring and control device 30.

When the office data analysis unit 41 receives the office data 100 of the audit file having the same information as the information currently set in the exchange 10, the network monitoring control unit 50
The information necessary to manage the configuration is extracted, and a configuration information management file is created from this information. The configuration information management file created here is referred to as a comparative configuration information management file 300 to distinguish it from the configuration information management file currently stored in the configuration information management file storage unit 42.

When the station data analysis unit 41 creates the comparison configuration information management file 300, it outputs this to the difference extraction unit 45. Upon receiving the comparison configuration information management file 300, the difference extraction unit 45 stores the configuration information management file 200 corresponding to this file in the configuration information management file storage unit 4.
Read from 2. Then, the two input files are compared and a difference is extracted. This processing will be described with reference to FIG. Now, it is assumed that the comparison configuration information management file 300 as shown in FIG. On the other hand, as the configuration information management file corresponding to the input configuration information management file 300 for comparison, the configuration information management file 200 is stored in the configuration information management file storage unit 4.
It is assumed that data has been read out from No. 2.

The difference extracting unit 45 extracts a difference from these two files. As a result, the category Od_co_fli_in
The item of "mounting state" of s is extracted. Then, the difference extracting unit 45 creates a difference configuration information management file 400 based on the extracted information. As a result, a difference configuration information management file 400 in which the comparison configuration information management file 300 and the configuration information management file 200 are matched is created. Then, the difference extracting unit 45 stores the created difference configuration information management file 400 again in the configuration information management file storage unit 42 and outputs the difference configuration information management file 400 to the configuration information MIB setting unit 43. The configuration information MIB setting unit 43 reflects the input difference configuration information management file 400 in the MIB 44.

Thus, the switching equipment 1 of the MIB 44
The information of 0 and the information of the exchange 10 are consistent. As described above, even when a failure occurs, the information stored in the MIB 44 is consistent with the information stored in the configuration information management file storage unit 42.
The information stored in the configuration information management file storage unit 42 can also be made consistent with the information set in the exchange 10, so that even after a failure occurs, as in the case before the failure, The exchange 10 can be managed.

In the present invention, the comparison configuration information management file 300 is created from the station data 100 of the audit file, and this file is compared with the configuration information management file 200 of the same format, and the difference information reflecting the difference information is created. A configuration information management file 400 is created, and
This is reflected in the IB44. Therefore, the station data 100 and M
Compared to a method of directly comparing the information stored in the IB 44 and storing the information reflecting the difference in the MIB 44 again, the frequency of accessing the MIB 44 is significantly reduced, so that the processing is simplified and the load is reduced. , And a reduction in development costs.

In the present invention, the MI in FIG.
A program for realizing the function of each unit of the B management device 40 is recorded on a computer-readable recording medium,
The program recorded on this recording medium may be read into a computer system and executed to manage the MIB. Here, the “computer system” includes an OS and hardware such as peripheral devices.

The "computer-readable recording medium" is a portable medium such as a floppy (registered trademark) disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in a computer system. That means. Furthermore, a "computer-readable recording medium" is one that dynamically holds a program for a short time, such as a communication line for transmitting a program through a network such as the Internet or a communication line such as a telephone line. (Transmission medium or transmission wave), in which case a program holding a program for a certain period of time, such as a volatile memory in a computer system serving as a server or a client, is also included.

The above program may be a program 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, and what is called a difference file (difference program) may be sufficient.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the embodiments, and includes a design and the like within a range not departing from the gist of the present invention. It is.

[0040]

As described above, according to the network management system of the present invention, the following effects can be obtained.

In the MIB management apparatus of the present invention, station data necessary for realizing the operation of the exchange is inputted, and information necessary for managing the exchange is extracted from the office data, and the configuration information is extracted. It has station data analysis means for creating a management file, and configuration information MIB setting means for reflecting the configuration information management file created by the station data analysis means in the MIB.

With such a configuration, it is possible to reflect the state of the exchange in the MIB without human intervention. As a result, it is possible to avoid a malfunction of the apparatus due to erroneous input of information, which has conventionally occurred. Furthermore, since the operation time conventionally used for information setting can be greatly reduced, an effect that a quick service can be provided to the user can be obtained. It can also contribute to reducing labor costs.
Further, since information required by the exchange management device is extracted from the office data and reflected in the MIB, the data to be processed can be reduced, and the effect that high-speed processing can be realized in all the processes can be obtained.

According to the present invention, the station data analyzing means classifies the information extracted from the station data and creates a configuration information management file for each classification. As a result, it is possible to obtain an effect that the processing can be simplified and the load can be reduced. Further, according to the present invention, the configuration information MIB setting unit converts the configuration information management file into a format that can be easily reflected on the management object managed by the network management device, and stores the converted format in the MIB. Can be reduced, and high-speed processing can be realized.

Further, according to the present invention, a configuration information management file storage means for storing the configuration information management file created by the station data analysis means, and a predetermined configuration information management file is read from the configuration information management file storage means. A reading unit, a configuration information management file read by the reading unit, and a configuration information management file created by the station data analysis unit are input, and a difference between the two is extracted to create a difference configuration information management file. A difference extracting unit, and when a failure occurs in either the exchange or the network management device, the reading unit reads a configuration information management file corresponding to the failed exchange from the configuration information management file storage unit, The station data analysis means uses the same information as that set in the exchange at this time. Information necessary for the network management device to manage the exchange from the station data having the information, a configuration information management file for comparison is created, and the difference extraction means performs the configuration information management read by the reading means. The file is compared with the comparison configuration information management file created by the station data analysis means, and a difference configuration information management file is created from the difference between the two.
The B setting means reflects the difference configuration information management file created by the difference extraction means in the MIB.

As described above, when the information set in the exchange and the information set in the MIB are inconsistent, the configuration information management that is consistent with the information set in the MIB is performed. The configuration information management file to be corrected is read from the file storage unit, and the file is changed based on the comparison configuration information management file created from the station data set in the exchange. This gives M
The information set in the MIB and the information set in the exchange can be matched without accessing the IB. As a result, it is possible to obtain the effect that the processing can be simplified, the load can be reduced, and the development cost can be reduced.

Further, according to the present invention, the office data input to the office data analysis means is an audit file including all data for operating the exchange. Thus, the office data analysis unit creates a comparison configuration information management file based on the office data including all the information of the exchange, and the difference extraction unit uses the MIB file based on the highly reliable comparison file. Since the setting information can be calibrated, the network management device has an effect that the exchange can be managed accurately.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an exchange management system according to a first embodiment of the present invention.

FIG. 2 is a diagram conceptually showing a configuration example of station data.

FIG. 3 is a functional block diagram illustrating functions of the MIB management device according to the present embodiment.

FIG. 4 is an explanatory diagram for explaining a function of a station data analysis unit.

FIG. 5 is a functional block diagram illustrating functions of an MIB management device according to a second embodiment of the present invention.

FIG. 6 is an explanatory diagram for explaining a function of a difference extraction unit.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 switch 20 switching station data creation device 40 MIB management device 50 network monitoring and control device (switch management device) 41 station data analysis unit 42 configuration information management file storage unit 43 configuration information MIB setting unit 44 MIB (Management Information Base) 100 station data 200 configuration information management file 300 comparison configuration information management file 400 difference configuration information management file

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuji Hisaiwa 1-9-1 Konan, Minato-ku, Tokyo NTT Communicationware Co., Ltd. F-term (reference) 5K030 GA14 GA17 HB08 HC01 JA10 KA05 MB01 MD06 5K051 AA08 BB02 CC02 DD01 FF01 9A001 CC07 JJ01 JJ07

Claims (9)

[Claims] 1. An MIB management apparatus that manages an MIB that provides information to be referred to at the time of network management to a network management apparatus that manages a network including at least one switch, wherein operation of the switch is realized. Station data required for managing the exchange is extracted from the station data, and a station information analyzing means for creating a configuration information management file; and And a configuration information MIB setting unit for reflecting the configuration information management file created by the unit in the MIB. 2. The configuration information MIB setting means converts the configuration information management file into a format that can be easily reflected on a management object managed by the network management device, and stores the converted format in the MIB. 2. The MIB management device according to 1. 3. The MIB according to claim 1, wherein the station data analysis means classifies information extracted from the station data, and creates a configuration information management file for each classification. Management device. 4. A configuration information management file storage means for storing the configuration information management file created by the station data analysis means, and a reading means for reading a predetermined configuration information management file from the configuration information management file storage means. The configuration information management file read by the reading unit and the configuration information management file created by the station data analysis unit are input, and the difference between the two is extracted to create a difference configuration information management file. Extracting means, and when a failure occurs in any of the exchange or the network management device, the reading means reads the configuration information corresponding to the failed exchange from the configuration information management file storage means. The management file is read, and the station data analysis means sends the current data to the exchange. Extracting information required for the network management device to manage the exchange from station data having the same information as the information set at the time, creating a configuration information management file for comparison, and extracting the difference The means compares the configuration information management file read by the reading means with the comparison configuration information management file created by the station data analysis means, and creates a difference configuration information management file from the difference between the two. The configuration information MIB setting unit stores the difference configuration information management file created by the difference extraction unit in the MIB.
The MIB management device according to any one of claims 1 to 3, wherein the MIB management device reflects the information. 5. The MIB management apparatus according to claim 4, wherein the office data input to said office data analysis means is an audit file including all data for operating said exchange. . 6. An MIB management method for managing a MIB for providing information to be referred to at the time of network management to a network management device that manages a network including at least one switch, wherein operation of the switch is realized. Data required for the exchange is extracted from the station data, a configuration information management file is created, and the configuration information management file is stored in the MIB. An MIB management method characterized by reflecting the MIB. 7. The configuration information management file is stored, and when a failure occurs in either the exchange or the exchange management device, the same information as the information currently set in the exchange is stored. Information necessary for the network management device to manage the exchange from the station data having the exchange information, and a configuration information management file for comparison is created, and the exchange information is extracted from the plurality of stored configuration information management files. Extracting a configuration information management file corresponding to, comparing the configuration information management file for comparison with the configuration information management file, creating a difference configuration information management file from the difference between the two, The MIB management method according to claim 6, wherein the MIB is reflected in the MIB. 8. A computer-readable storage for recording a MIB management program for managing an MIB for providing information referred to in network management to a network management apparatus for managing a network including at least one switch. In the medium, the program is input with station data necessary for realizing the operation of the switch, and extracts information necessary for managing the switch from the station data, and performs configuration information management. A computer-readable recording medium recording a program for causing a computer to create a file and reflect the configuration information management file in the MIB. 9. The configuration information management file is stored, and when a failure occurs in either the exchange or the exchange management device, the same information as the information currently set in the exchange is stored. Information necessary for the network management device to manage the exchange from the station data having the exchange information, and a configuration information management file for comparison is created, and the exchange information is extracted from the plurality of stored configuration information management files. Extracting a configuration information management file corresponding to, comparing the configuration information management file for comparison with the configuration information management file, creating a difference configuration information management file from the difference between the two, Computer-readable recording in which a program for causing a computer to reflect the MIB is recorded. Body.