JPH07162423A - Remote controller for network monitor system - Google Patents

Abstract

PURPOSE:To efficiently store monitor information collected from lots of monitors 9-11 connecting to each interface point on signal lines 2a, 6 of the communication system to a data storage section. CONSTITUTION:Every time monitor information is received from each monitor, a data quantity of said monitor information is detected and areas for a monitor file 32 having a storage capacity corresponding to the detected data quantity are set to a data storage section 22, and the received monitor information is written in the set monitor file. The storage location of the set monitor file in the data storage section and a file name specifying a sender monitor are stored in a management table 30. A translation table 20a storing translation information sets of plural kinds corresponding to protocol types at each interface point is provided and the monitor information collected in the monitor file is translated by the translation information of the corresponding protocol type depending on the display operation and the result is displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network monitoring system for monitoring the communication status of each signal line of a communication network such as ISDN or packet communication network, and more particularly to monitor information and log information detected by each monitoring device. Remote control device for collecting data.

[0002]

2. Description of the Related Art ISDN (Integrated Services Digital Network), packet communication network and the like are communication systems for transmitting a large number of multiplexed data at high speed and efficiently. In such a communication system, the I integrated in the communication network
The SDN exchange is connected to a DSU (line terminating device) installed in the user's house via an ISDN signal line, and this D
A large number of terminals such as telephones, telexes, personal computers, and facsimiles are connected to the SU (line terminating device).

An ISDN exchange in a communication network is connected to a DTE (packet terminal) via a packet signal line and a DCE (data line terminating device). Further, in some cases, a normal telephone terminal is connected to the ISDN exchange through an analog telephone line.

Then, when a communication system having such a configuration is newly constructed or at the time of regular inspection and maintenance, each ISD
In N signal line and packet signal line, cable disconnection failure, connector contact failure, exchange and DSU
It is necessary to confirm whether or not there is a hardware failure such as an abnormal connection with the DCE or the DCE. Furthermore, it is necessary to measure the line quality such as transmission error over a long period of time and statistically evaluate it.

Conventionally, when such a test is carried out, a connection point between respective devices in each signal line, that is, S
A monitoring device is connected to each interface point such as / T point, R point, etc., the communication state of each point is displayed on a monitor by a cathode ray tube, etc., and the signal waveform or digital value is analyzed to estimate the location of the abnormality. It was

Further, in order to efficiently investigate the cause of the abnormality that occurs once, it is necessary to later investigate the communication state such as the protocol state immediately before the occurrence of the abnormality. For this reason, a monitor information file is provided in the monitoring device, and monitor information such as the protocol state detected moment by moment is written in the monitor information file in time series.

Further, in order to statistically grasp the occurrence of an abnormality including a transmission error, the presence or absence of an abnormality is judged from the monitor information, and when there is an abnormality, log information (event occurrence information) is given as log information. I keep it in a file.

As described above, by cumulatively storing the log information and the monitor information in the monitoring device for a long period of time, the technician analyzes the cumulatively stored log information later, and statistically analyzes the communication line. Communication quality can be evaluated.

[0009]

However, when the scale of the communication system increases and the number of monitoring devices installed in each user's house increases, the monitor information recorded in the monitor information file of each monitoring device is changed. It takes a lot of time and labor for the operator and the operator to collect each time.

In order to eliminate such an inconvenience, a remote control device is installed in a management center or the like other than the user's house, and the remote control device and the monitoring device installed in each user's house are dedicated communication lines. , Connect using the monitored communication line or ordinary telephone line. Then, it is considered that the monitor information and the log information stored and held in each monitoring device are collected in the remote control device via the communication line or the telephone line.

However, as described above, in order to store and hold the monitor information in the monitor information file in a time series over a long period of time, this monitor information file is, for example, 4 MByte.
It requires a considerably large storage capacity such as e. Then, when a serious abnormality occurs or when a set transmission time comes at regular intervals, a huge amount of monitor information stored and held in this monitor information file is transmitted to the remote control device.

As the remote control device, it is necessary to store and hold the monitor information and the log information transmitted from each monitoring device, for example, for each monitoring device or for each line number. However, if the number of installed monitoring devices exceeds 100, for example, it is economical and useful to secure a storage capacity that can unconditionally store and retain the monitor information transmitted from all monitoring devices. It's not a good idea to think about it. Further, since it is technically impossible to increase the storage capacity excessively, the number of monitoring devices installed is limited.

Therefore, it is desired to efficiently store the monitor information transmitted from each monitoring device in a storage device having a small storage capacity. Since the log information only counts the number of times each log information (event occurrence) occurs,
Even if the log information of all the monitoring devices is collected in the remote control device all at once, the remote control device requires a relatively small storage capacity.

Further, since the protocol types at the interface points on the signal line are often different from each other, even if the monitor information collected by the remote control device is directly displayed and output on the display screen of the CRT display device or the like,
It is displayed in each machine language. Therefore, there is a problem that the observer cannot immediately grasp the communication status of each interface point.

The present invention has been made in view of the above circumstances, and utilizes the fact that the amount of monitor information collected from each monitoring device is not constant, so that the capacity of a monitor file for storing each monitor information can be increased. By varying, the data storage unit can be used efficiently, and as a result, the storage capacity of the data storage unit can be reduced, the manufacturing cost of the entire device can be reduced, and the monitor information detected at each interface point can be easily understood. An object of the present invention is to provide a remote control device for a network monitoring system that can be displayed and can be improved in operability.

[0016]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention detects a communication state of each interface point of each signal line of a communication network and stores a plurality of monitors as monitor information and log information. Connected to each device via signal lines, collect monitor information and log information stored and held in each monitoring device, and write to the own data storage unit, for example, display output according to the display operation of the operator It is applied to the remote control device of the network monitoring system.

The remote control device of the present invention detects the data amount of the corresponding monitor information each time the monitor information is received from each monitoring device, and a storage device corresponding to the detected data amount. File area setting means for setting an area for a monitor file having a capacity in the data storage section; and monitor information writing means for writing the received monitor information in the monitor file set by the file area setting means,
A management table that stores the storage position of the set monitor file on the data storage unit and a file name that identifies the transmission source monitoring device, and a translation table that stores a plurality of types of translation information corresponding to the protocol type at each interface point A translation unit that translates the monitor information collected in the monitor file according to the display operation with the translation information of the corresponding protocol type and outputs the translated information.

[0018]

In the remote control device configured as described above, it is assumed that there is almost no case where all the monitor information stored and held in each monitoring device is collected at once for all the monitoring devices.

That is, it is important to monitor the signal line to be monitored, which has been pulled into the user's house for a long time, and store and hold the monitor information and the log information. It is also important to collect log information from each monitoring device to the remote control device on a regular basis. When a serious abnormality occurs, it is necessary to collect the monitor information as detailed as possible, which is stored and held in the signal line monitoring device that is considered to be caused by the abnormality. In this case, all the monitor information stored and held in the relevant monitoring device is transmitted to the remote control device.

However, it is not necessary to transmit the monitor information stored and held in the monitoring device of the signal line of the user's house, which is not directly related to the occurrence of the abnormality, to the remote control device. Even if it is necessary, all the monitor information stored and retained may not be transmitted, and only a very small amount of monitor information immediately before the occurrence of the abnormality may be transmitted.

Therefore, the data amount of the monitor information transmitted from each monitoring device to the remote control device is not constant. Therefore, each time monitor information is received from each monitoring device, a storage area required by a monitor file for storing the monitor information is set in the data storage section, so that a large number of useless areas in the data storage section are wasted. It is possible to prevent the monitor file from being set. Since the storage location of each monitor file on the data storage unit changes each time,
It is stored in the management table.

Further, the monitoring device has an S / T point on the signal line,
Since it is installed at various interface points such as the R point and the DDX-P point, the protocol information detected as the monitor information is expressed in different formats. Therefore, when displaying these monitor information on the display device of the remote control device, by translating and displaying the translation information of the corresponding protocol type in the translation table, it is possible to make the screen very easy for the monitor to see. Become.

[0023]

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 a communication system incorporating a remote control device of a network monitoring system according to an embodiment.

The ISDN signal line 2a connected to one ISDN switch in the communication network 1 composed of a large number of ISDN exchanges and a large number of signal lines connecting them to each other is a DSU (provided in the user's house. Circuit termination equipment) 3a. T for this DSU3a
It is connected to a TE2 (ISDN non-standard terminal) 5 such as a personal computer through an A (terminal adapter device) 4.

Further, the ISDN in the communication network 1
The packet signal line 6 connected to the exchange is connected to a DTE (packet terminal) 8 via a DCE (data line terminating device) 7.
Connected to.

Three monitoring devices 9 and 10 for monitoring the respective communication states of a total of four interface points of S / T point, R point, DDX-P point and V point in the communication system having such a basic configuration. , 11 are provided. Further, a remote control device 12 for remotely controlling each of these monitoring devices 9, 10, 11 is incorporated.

That is, the DS on the ISDN signal line 2a
S / T point between U3a and TA4, TA4 and TE2 5
The monitoring device 9 is connected to the R point between the and. This monitoring device 9 includes a DSU 3b and a dedicated ISDN signal line 2b.
It is connected to the ISDN exchange in the communication network 1 via.

DC on the packet signal line 6
The monitoring device 10 is connected to a DDX-P point between E7 and DTE8. The monitoring device 10 is connected to the communication network 1 via the DSU 3c and a dedicated ISDN signal line 2c.
It is connected to the ISDN exchange inside. Further, the monitoring device 10 is connected to the ISDN exchange in the communication network 1 via the modem 13a and the telephone line 14a.

A monitoring device 11 is connected to a point V in the ISDN exchange in the communication network 1. This monitoring device 11 is a DSU 3d and a dedicated ISDN signal line 2
It is connected to the ISDN exchange in the communication network 1 via d. Further, the monitoring device 11 is an IS in the communication network 1 via the modem 13b and the telephone line 14b.
It is connected to a DN switch.

It should be noted that V in the exchange of the communication network 1
The point means an interface point between the interface signaling device in the exchange and the subscriber line terminal equipment, and can be regarded as an output point in the exchange that flows through the signal line 2a introduced in the user's house. Is.

Further, the DSU is connected to another ISDN signal line 2e connected to the ISDN exchange of the communication network 1.
The remote control device 12 is connected via 3e. The remote control device 12 is also connected to an ISDN exchange in the communication network 1 via a modem 13c and a telephone line 14c. The remote control device 12 is installed, for example, in the management center of the telephone company.

The monitoring devices 9, 10 and 11 are connected to respective interface points (R point, S / T point, DD).
The protocol status of layers 1, 2, and 3 indicating the communication status at points X-P and V) is monitored, and if a change occurs, the monitor information is stored in each address of the monitor information file 15 shown in FIG. Write in chronological order as. When the write address reaches the final address of the monitor information file 15, it returns to the start address. That is, the monitor information file 15 always stores the latest predetermined number of monitor information together with the time of occurrence.

Each of the monitoring devices 9, 10, 11 of the embodiment is used.
Each monitor information file 15 can store up to 4 MBytes of data. In addition, each monitoring device 9,
Numerals 10 and 11 detect predetermined log information (event occurrence information) of the detected monitor information of layers 1, 2, and 3 and indicate the event stored in the log information file 15 shown in FIG. Increase the number of occurrences and update. Therefore,
If a large number of the same abnormalities occur in a short period of time, the number of occurrences of the relevant item will rapidly increase.

Then, for example, when the number of occurrences of the item of the specific log information exceeds the allowable limit, the communication lines 2a, 2b,
A trigger signal indicating the occurrence of an abnormality is sent to the remote control device 12 via 2c, 2d, 2e, 14a, 14b, 14c.

Incidentally, the monitoring devices 9, 10, 11 of the embodiment
The storage capacity of the log information file 16 is only 8
It is 10 Bytes. FIG. 2 is a schematic configuration diagram of the remote control device 12. The remote control device 12 is composed of a kind of information processing device such as a personal computer.

That is, with respect to the system bus 17, the CPU 18 for executing various processing tasks, the ROM 19 for storing various fixed data such as control programs, the RAM 20 for storing various variable data, the communication section 21, and the communication section 21 receive the data. A data collecting unit 23, a clock circuit 24, and a CR, which temporarily store the data in the reception buffer and then write the data in the data storage unit 22.
T display device 25a, keyboard 25b, and mouse 25c
An operation unit 25 having a man-machine function configured by, a printer 26, and the like are connected.

The communication section 21 receives the ISD via the connection terminal 27.
It is connected to the N signal line 2e and is also connected to the telephone line 14c via the connection terminal 28. Furthermore, the communication unit 21
Is an RS-23 that can be connected to an external host computer, etc.
It is connected to a connection terminal 29 having the 2C interface standard.

In the RAM 20, there is formed a translation table 20a for storing a plurality of translation information for translating the protocol state at each interface point into a language that can be easily understood by a monitor. Specifically, for example, X. Two
5 (1976) / X. 25 (1980) / X. 25 (1984), SD
A table is provided for translating protocol standards such as LC.

Further, in the RAM 20, an information transmission command for collecting log information is transmitted from the remote control device 12, for example, a transmission time determined for each monitoring device such as 0 o'clock at midnight and a monitor. A polling setting table 20b that stores polling conditions such as a transmission rate (%) in the information file 15 is formed.

The data storage unit 22 is composed of, for example, an HDD (hard disk device), and internally has a plurality of monitor files 33 and a management table 30 for managing them, as shown in FIG. There is. Further, in the data storage unit 22, as shown in FIG. 4, a plurality of log files 33 and a management table 31 for managing these are formed.

In the apparatus of the embodiment, the storage capacity of the data storage section 22 is 120 MByte. 120
Of the MBytes, 80 MBytes are allocated to store the monitor information and 10 MBytes are allocated to store the log information. The rest is allocated to the management tables 30 and 31, the user information storage, and the like.

In the management table 30 for monitoring shown in FIG. 3, a storage area for storing management information for every monitoring device 9, 10, 11 displayed by all the line numbers managed by the remote control device 12, for example. 30a is formed. In each storage area 30a, a line number, a keyword, a user name,
The installation location of the applicable monitoring device, the collection time of the applicable monitor information,
A storage file name, a storage position indicated by a start address and an end address, and the like are stored.

It is not preset which position in the storage area of 80 MBytes of the data storage unit 22 each monitor file 32 is allocated to. Further, the size of each monitor file 32 (amount of occupied storage area) is not set in advance. That is, when the monitor information of each of the monitoring devices 9 to 11 is received, the monitor file 32 storing the corresponding monitor information is set in the data storage unit 22.

Further, adjacent to the management table 30, when each monitor information is received, an address memory 34 for storing a write address indicating a start address of a storage position of a file 32 for storing the received monitor information is formed. Has been done.

A management table 31 for log information shown in FIG.
A storage area 31a for storing management information is formed in each of the monitoring devices 9, 10, 11 (for each line number) managed by the remote control device 12. Each storage area 31a
Like each storage area 30a for monitoring, the line number, the keyword, the user name, the installation location of the corresponding monitoring device,
The collection time of the corresponding monitor information, the storage file name, the storage position indicated by the start address and the end address, and the like are stored.

Each log file 33 is stored in the data storage unit 2
The position to which the data is to be allocated within the storage area of 10 MBytes of 2 is preset. Also, each log file 3
The size of 3 (the amount of occupied storage area) is also the same as that of each of the monitoring devices 9 to 11.
The log information file 16 is fixed to 810 Bytes. Therefore, each log file 33 is preset in the data storage unit 22.

The data collecting unit 23 is the communication unit 2
When monitor information or log information is received from any one of the monitoring devices 9 to 11 via 1, the storage process of the received monitor information or log information in the data storage unit 22 is executed according to the flowchart shown in FIG. The program is structured.

The flow chart begins and in P (program step) 1 the type of information received is examined. If it is monitor information, the received monitor information is temporarily stored in the reception buffer. Then, the data amount of the received monitor information is detected (P2). Then, the information for identifying the transmission source monitoring devices 9 to 11 such as the line number is read.

Next, the write address stored in the address memory 34 is read. Then, the monitor file 3 for storing the current monitor information in the data storage unit 22 based on the write address and the read data length.
2 storage areas (start address, end address) are set (P3). Then, the set storage area is set in the storage area 30a corresponding to the corresponding line number of the monitor information management table 30 (P4).

After that, the monitor information once written in the reception buffer is read out and stored in the monitor file 32 previously set (P5). Then, the write address of the address memory 34 is updated to the address next to the end address of the monitor file 32 which has been set previously. After confirming that the updated write address does not exceed the final address of the area of the data storage unit 22 prepared for monitor information, the process of storing the monitor information in the data storage unit 22 is completed.

In P6, when the updated write address exceeds the final address of the area of the data storage unit 22 prepared for monitor information, this write address is returned to the head address of this area.

If the information input to the communication unit 21 is log information (P7), the received log information is temporarily stored in the reception buffer. Then, the information for identifying the transmission source monitoring devices 9 to 11 such as the line number is read. The log information once written in the reception buffer is read and stored in the log file 33 designated by the storage position stored in the storage area 31a designated by the previously read line number in the log information management table 30. (P8).

Therefore, the received monitor information is newly set in the monitor file 32 having a storage capacity corresponding to the data amount of the monitor information and stored in the set monitor file. Also, the log information is stored in the log file 33 having a preset fixed storage capacity.

Further, the CPU 18 operates from the operation unit 25 having a man-machine function including a CRT display device 25a, a keyboard 25b and a mouse 25c, and [1] [2].
When a display command specifying the display modes [3] and [4] and the monitor file name (line number) is input, monitor information (protocol information) stored in the specified monitor file 32 in the data storage unit 22. Read out.

Then, using the translation information of the translation table 20a corresponding to the monitor information (protocol information) at the read interface point, the translation information is converted into the language of the designated mode and displayed on the CRT display device 25a.

[1] in FIGS. 7A, 7B, 7C and 7D.
The translated monitor information is shown in each of the modes [2], [3], and [4]. As shown in the figure, the lower the mode number, the closer to the device language, and the higher the mode number, the closer to the high-level language that a person can easily understand. The mode of display can be arbitrarily changed according to the monitoring purpose and technical level of the monitor.

In addition, the CPU 18 responds to the simultaneous display instruction operation on the operation unit 25 by the two monitor files 32.
Each monitor information is read from the CR, and as shown in FIG.
Simultaneously displaying on the same display screen of the T display device 25a, thus displaying the monitor information in the plurality of monitoring devices 9 to 11 on the same screen has the following advantages.

That is, when an important abnormality occurs at one interface point of one signal line 2a, the monitoring device connected to the corresponding interface point transmits a trigger signal indicating the occurrence of abnormality to the remote control device 12. It Then, the remote control device 12 transmits a monitor stop command and a monitor information transmission command to each monitoring device connected to the corresponding monitoring device and another interface point related to the corresponding signal line 2a. Then, the monitor information in the predetermined allowable range stored and held in the monitor information file 15 is transmitted from the specified monitoring devices 9 to 11 to the remote control device 12.

The operator operates the operation unit 25 to simultaneously display the monitor information from the monitoring device that has detected the occurrence of an abnormality and the monitor information of another monitoring device adjacent to this monitoring device on the CRT.
It is displayed on the display device 25a. Therefore, the protocol information at each interface point along the signal flow at the time of occurrence of an abnormality can be compared and compared at the same time, and the location of the abnormality occurrence and the cause of the abnormality can be efficiently analyzed.

In the remote control device having such a configuration, when the monitor information is received, the monitor file 32 having the storage capacity corresponding to the data amount of the monitor information is formed in the data storage unit 22. . Therefore, it is not necessary to prepare the monitor file 32 for the monitoring devices 9 to 11 to which the monitor information is not transmitted, and the valuable storage capacity of the data storage unit 22 can be effectively used.

In the apparatus of the embodiment, the monitoring devices 9-11
The installed number is 400, and the storage capacity of the monitor information file 15 of each of the monitoring devices 9 to 11 is 4 MByte. Therefore, considering the possibility of transmitting all monitor information when a trigger occurs, if each monitor file 32 is fixed in the data storage unit 22, the required storage capacity of each monitor file 32 is 4 MBytes.
As a result, the required storage capacity of the entire data storage unit 22 is 4 ×.
It becomes 400 = 1600 MByte, which is not practical.

Therefore, the required storage capacity of the data storage unit 22 is set to, for example, 8 by configuring the apparatus of the embodiment.
It can be reduced to about 0 MByte, and a practical device can be obtained. In this case, when the trigger signal is generated,
Assuming that all 4 MBytes of monitor information is transmitted, it is possible to collect monitor information from a maximum of 20 monitoring devices 9 to 11 which are considered to be related to the occurrence of an abnormality.

As described above, even if the required storage capacity of the data storage unit 22 is set to 80 MByte, it is possible to sufficiently deal with the actual work. Therefore, one remote control device 12 has 400
A large number of monitoring devices 9 to 11 that can exceed the base can be connected,
The manufacturing cost of the entire network monitoring system can be significantly reduced.

[0064]

As described above, the remote control device of the present invention detects the data amount of monitor information at the time of reception by utilizing the fact that the data amount of monitor information collected from each monitoring device is not constant. The size of the monitor file that stores the monitor information is determined and set in the data storage unit. Therefore, the data storage unit can be used efficiently, the storage capacity of the data storage unit can be reduced, and the manufacturing cost of the entire apparatus can be reduced.

Further, a translation table for translating monitor information such as protocol information detected at each interface point is provided. Therefore, the monitor information detected at each interface point can be displayed in an easy-to-understand manner for the observer, and operability can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a communication system incorporating a remote control device of a network monitoring system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of the apparatus of the embodiment.

FIG. 3 is a diagram showing stored contents of a data storage unit of the apparatus of the embodiment.

FIG. 4 is a diagram showing a storage content of the same data storage unit.

FIG. 5 is a diagram showing a monitor information file and a log information file formed in the monitoring device of the monitoring system.

FIG. 6 is a flowchart showing the operation of the remote control device.

FIG. 7 is a diagram showing monitor information displayed on a CRT display device of the remote control device.

FIG. 8 is a diagram showing monitor information at different interface points which are simultaneously displayed on the CRT display device of the remote control device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Communication network, 2a-2e ... ISDN signal line, 3a-3e ... DSU, 4 ... TA, 5 ... Terminal, 9-1
1 ... Monitoring device, 12 ... Remote control device, 15 ... Monitor information file, 16 ... Log information file, 18 ... CPU, 2
0 ... RAM, 20a ... Translation table, 20b ... Polling setting table, 21 ... Communication unit, 22 ... Data storage unit,
23 ... Data collection unit, 25 ... Operation unit, 25a ... CRT display device, 30, 31 ... Management table, 32 ... Monitor file, 33 ... Log file.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazushige Higuchi 5-1027 Minamiazabu, Minato-ku, Tokyo Anritsu Corporation (72) Inventor Chiaki Arai 5-1027 Minamiazabu, Minato-ku, Tokyo Henri (72) Inventor Goji Oshima 1-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo Nihon Telegraph Telephone Co., Ltd. (72) Inventor Hiroshi Takeuchi 1-1-6 Uchiyuki-cho, Chiyoda-ku, Tokyo Nihon Telegraph Phone Co., Ltd.

Claims (1)

[Claims] 1. A signal line (2a, 2a,
Multiple monitoring devices (9, 1) that detect the communication status of each interface point in 6) and store and store it as monitor information and log information.
0, 11) via signal lines (2b, 2c, 2d, 2e) respectively, and collects monitor information and log information stored and retained in each of the monitoring devices to collect its own data storage unit (22 In the remote control device (12) of the network monitoring system for writing and outputting in accordance with the display operation, each time the monitor information is received from each of the monitoring devices, the data amount of the corresponding monitor information is detected. Means (P
2), a file area setting means (P3) for setting an area of the monitor file (32) having a storage capacity corresponding to the detected data amount in the data storage part (22), and setting by this file area setting means A monitor information writing means (P5) for writing the received monitor information in a specified monitor file, and a storage position of the set monitor file on the data storage unit and a file name for specifying a sender monitoring device are stored. A management table (30) for storing, a translation table (20a) for storing a plurality of types of translation information corresponding to the protocol type at each interface point, and the monitor information collected in the monitor file corresponding to the display operation are associated with each other. A remote control device for a network monitoring system, comprising a translation means (18) for translating and displaying and outputting with translation information of a protocol type.