JPH08242228A - Network monitoring system - Google Patents

Abstract

PURPOSE: To prevent the continuity of monitor from being interrupted by setting up monitor paths between each monitor terminal and plural monitoring center so that the terminal always recognizes the operation states of the plural monitoring centers. CONSTITUTION: Each of monitoring centers A, B is provided with a 1st monitor path setting means 1 for setting up a communication path between the center itself and a monitor terminal and a 1st operation state informing means 2. Each monitor terminal is provided with a 2nd monitor path setting means 3 for setting up communication paths between the centers A, B and the terminal itself and a 1st operation state receiving means 4 for receiving operation state information informed from the centers A, B. The means 3 in each monitor terminal executes operation for setting up communication paths to respective monitor path setting means 1 in the centers A, B. After setting up the communication paths, the means 4 in each monitor terminal receives operation state information sent from respective means 2 in the centers A, B and recognizes the operation states of the centers A, B.

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, and in particular, in a network in which a plurality of terminal devices are connected via a plurality of exchanges, maintenance and monitoring of this network are performed by a plurality of monitoring centers. The present invention relates to a network monitoring system performed by a plurality of monitoring terminals for maintenance personnel.

[0002]

2. Description of the Related Art Conventionally, in a data exchange network such as a packet exchange network or a circuit exchange network, which handles digital data among various kinds of information, a so-called host computer, a host terminal device for the device, a controlled terminal, a personal computer. Are mixed and operated. Among such data exchange networks, in the packet exchange network, a plurality of packet exchanges (PS) are connected to form a network. The operation state of the PS is constantly monitored, and when a failure occurs, it is promptly responded. It is very important to maintain it so that it can be managed.

Therefore, conventionally, as shown in FIG. 12, a plurality of monitoring terminals and a monitoring center are installed at important points of the network to monitor the network. Here, the monitoring terminal is a terminal dedicated to the network maintainer that is connected to the PS, monitors the status related to the PS, and checks the current operation status of the entire network based on the information sent from the monitoring center. It is a device.

The monitoring center has a PAD (Packet Assert) for connecting a packet switch (PS) existing in the network shown in FIG. 12 and a non-packet terminal to the packet switch network.
It is a device that collects information on the operating status such as embly and disassembly) in real time and performs centralized monitoring of the entire network.

Hereinafter, elements constituting a network such as PS and PAD are referred to as network devices or monitored devices. The monitoring target at the monitoring center and monitoring terminal is
These are network devices.

A communication path for monitoring is set between such a monitoring center and a monitoring device, and monitoring information collected at the monitoring center or a monitoring terminal is input on this communication path. Information is transferred.

Conventionally, even when a plurality of monitoring centers are connected, one of them is a working apparatus that is always in operation, and the other one is normally in a standby state and when the working apparatus fails. The operation is started. Therefore, during normal operation, all of the plurality of monitoring terminals set up the communication path for monitoring only with the active monitoring center to monitor the network.

Further, when a failure occurs in the active monitoring center, the plurality of monitoring terminals detect that communication with the active monitoring center is disabled and then wait for the standby monitoring center. The communication path is newly set to continue the transfer of the monitoring information.

Another example of conventional network monitoring is disclosed in Japanese Patent Laid-Open No. 1-149552.
For this purpose, the state of the packet switching network consisting of a plurality of exchanges is monitored by one network monitoring center, and when this network monitoring center fails, one switching center acts as a substitute for the network monitoring center. Describes a network monitoring processing method for continuing network monitoring by setting a monitoring logical path signal line (15, 16 in FIG. 1) between exchanges.

[0010]

However, when a failure occurs in the current monitoring center or the operation is stopped,
An attempt was made to newly set up a communication path between another monitoring center and a monitoring terminal, but there were the following problems.

That is, it is unknown from the monitoring terminal whether or not another monitoring center that is going to newly set a communication path is in the same operating state as the working monitoring center, and even if a new communication path is set, If the information that has already been responded to from the monitoring terminal to the current monitoring center is not responding to other monitoring centers, or if the monitoring terminal is not ready to receive monitoring information from other monitoring centers, or if it is a monitoring terminal Inconvenience may occur when the same monitoring information as that already confirmed is sent from another monitoring center.

Further, the occurrence of such inconvenience is as follows.
There is a problem with respect to the reliability and continuity of the monitoring because it cannot be understood unless each monitoring terminal sets a communication path with another monitoring center.

The present invention has been made in consideration of the above circumstances, and a communication path for monitoring is set between each monitoring terminal and a plurality of monitoring centers so that the operating statuses of the plurality of monitoring centers are constantly maintained. By recognizing it, even when the operation is switched from the current monitoring center to another monitoring center,
It is an object of the present invention to provide a network monitoring system that does not hinder the continuity of monitoring.

[0014]

FIG. 1 shows a first embodiment of the present invention.
A basic configuration block diagram of is shown. In the figure, the present invention relates to a network monitoring system in which a plurality of monitoring centers for monitoring the operating state of a network and a plurality of monitoring terminals for confirming the monitoring information collected in the monitoring center are connected via a network, The monitoring center comprises a first monitoring path setting means 1 for setting a communication path with the monitoring terminal, and a first operating status notifying means 2 for notifying the monitoring terminal of its own operating status information. A monitoring terminal, a second monitoring path setting means 3 for setting a communication path with the monitoring center, and a first operating status receiving means 4 for receiving operating status information notified from the monitoring center. After the second monitoring path setting means 3 of each monitoring terminal operates to set the communication path to the first monitoring path setting means 1 of the plurality of monitoring centers, and after the communication paths are set. The operating status receiving means 4 of each of the monitoring terminals receives the operating status information sent from the first operating status notifying means 2 of the plurality of monitoring centers, and each of the monitoring terminals has a plurality of communication paths. The present invention provides a network monitoring system characterized by recognizing the operating status of the monitoring center.

FIG. 2 shows a second basic configuration block diagram of the present invention. In the figure, in the present invention, the monitoring terminal comprises a second operating status notifying means 6 for notifying the received operating status information of the specific monitoring center A to a monitoring center other than the monitoring center A. Is provided with a second operating state receiving means 5 for receiving the operating state information of the other monitoring centers sent from the second operating state notifying means 6, and the plurality of monitoring centers recognize the operating states of each other. The present invention provides a network monitoring system characterized by the above.

FIG. 3 shows a block diagram of a third basic configuration of the present invention. In the figure, according to the present invention, the monitoring center includes version number notifying means 7 for notifying the monitoring terminal of version number information indicating the configuration of the network device to be monitored, and the monitoring terminal is provided with the version number notifying means. The version number receiving means 8 for receiving the version number information notified from 7 and the switching means 9 for selectively switching the monitoring center which is the source of the monitoring information based on the received version number information are provided. The present invention provides a network monitoring system characterized in that monitoring is always performed through a communication path established with a monitoring center that has notified the latest version number information.

FIG. 4 shows a block diagram of the fourth basic configuration of the present invention. In the figure, in the present invention, the monitoring center comprises a response means 10 for returning the monitoring information possessed in response to an inquiry from the monitoring terminal, and the monitoring terminal stores the confirmed monitoring information. The completed information storage means 11,
Inquiring means 12 for inquiring the monitoring information of the monitoring information currently owned by the monitoring center, comparing the monitoring information stored in the confirmed information storage means with the monitoring information sent from the monitoring center, An unconfirmed information extracting unit 13 for extracting unconfirmed monitoring information and a display unit 14 for displaying the monitoring information are provided, and the monitoring terminal displays only the unconfirmed monitoring information extracted by the unconfirmed information extracting unit 13.
The present invention provides a network monitoring system characterized by being displayed on.

FIG. 5 shows a fifth basic configuration block diagram of the present invention. In the figure, according to the present invention, the monitoring center distributes the status notification receiving means 15 for receiving status notification information sent from a network device to be monitored and the received status notification information to other monitoring centers. The status notification distribution means 16 is provided, and the status notification information of the network device connected to the specific monitoring center is distributed to the other monitoring centers by the specific monitoring center, thereby directly receiving the status of the network device. Another monitoring center which does not exist is to provide a network monitoring system characterized by monitoring the status of the network device.

Here, the first and second monitoring path setting means (1, 3) are means for opening a communication path for transferring data between itself and a communication partner, and are for connecting to the network and It is configured by a dedicated LSI or CPU having a function of transferring data according to a predetermined communication protocol.

The first and second operating state notifying means (2,
6) notifies the monitoring terminal or another monitoring center of information such as the current operating status of the monitoring center, for example, the network monitoring path status, the monitoring center CPU congestion status, and the monitoring center maintenance status (in operation / maintenance work). It is a means, and is preferably configured by a dedicated LSI or a peripheral circuit such as a CPU and a ROM, a RAM, and a control program that executes this notification function.

The version number notifying means 7, the inquiry means 12,
As for the response means 10 and the status notification distribution means 16,
Similarly, these functions are realized by a dedicated LSI, or by a so-called microprocessor mainly including a CPU and a control program.

First and second operating status receiving means (4,
5) receives the operating status information notified from the monitoring center, and extracts the operating status information from the data assembled and sent in a predetermined format according to a predetermined communication protocol. Is preferably realized by the above-described dedicated LSI, CPU, control program, and the like.

Also, the version number receiving means 8 and the status notification receiving means 15 are preferably similarly realized by a dedicated LSI, a CPU, a control program or the like.
The switching unit 9 is a unit that switches the monitoring center, which is the source of the monitoring information that the monitoring terminal always receives, to another monitoring center, and is preferably realized by a CPU and a control program.

It should be noted that this switching does not physically switch the connection between the monitoring terminal and the monitoring center, but logically selects the communication path from which the monitoring information is to be received among the plurality of communication paths initially set. It means to change it.

The confirmed information storage means 11 is preferably constituted by a RAM. For example, the confirmed information storage means 11 stores the monitoring information, and a flag indicating whether the monitoring terminal has been confirmed or not confirmed for each monitoring state. It is preferably stored in RAM. Further, only the confirmed monitoring information may be stored.

The unconfirmed information extraction means 13 has a function of judging whether or not two pieces of information are the same, and if they are the same, judging whether or not the information is unconfirmed. Is preferably realized by a CPU, a control program, and the like. The display means 14 is normally CR
T or LCD (liquid crystal display) is used.

[0027]

According to the present invention, as shown in FIG. 1, each of a plurality of monitoring terminals sets a communication path for monitoring with a plurality of monitoring centers, and the monitoring terminals have a plurality of communication paths. Since the operating status of each monitoring center is recognized, even if a failure occurs in the monitoring center that receives the monitoring information, the monitoring terminal can switch to another monitoring center smoothly and continue monitoring. Sex is not hindered.
Therefore, a more reliable network monitoring system can be provided.

Further, according to the present invention, since the operating states of the monitoring centers can be notified via the monitoring terminals, the active monitoring centers are temporarily stopped for maintenance or other reasons. When it is necessary to do so, it is possible to easily know the operating state of the monitoring of the current monitoring center before the stoppage in another monitoring center, and it is possible to maintain the continuity of network monitoring.

Further, according to the present invention, the monitoring terminal always selects the monitoring center having the latest version number information for monitoring based on the version number information notified from the monitoring center. Even if a device constituting the network is added or the configuration is changed, the monitoring terminal can immediately continue monitoring in response to the addition or the change, and the maintainability of network monitoring can be improved.

Further, according to the present invention, the monitoring terminal is adapted to compare the confirmed monitoring information with the monitoring information sent from the monitoring center to extract the unconfirmed monitoring information. When the monitoring center switches to another monitoring center due to a failure, even if the monitoring information sent after switching and the confirmed monitoring information do not match, only the unconfirmed monitoring information is displayed to the network maintainer. be able to. Therefore, even if the monitoring center is switched to another monitoring center, the continuity of network monitoring can be maintained.

Further, according to the present invention, the status notification information of the network device for sending the monitoring information to only one monitoring center is sent to another monitoring center where this monitoring center does not directly receive the status of the network device. Since the distribution is performed, the monitoring center can more efficiently monitor the network including the network devices that do not directly receive the information on the status.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the embodiments shown in the drawings. The present invention is not limited to this.

Embodiment 1 FIG. 6 shows a block diagram of a configuration outline in Embodiment 1 of the present invention. Here, a process of setting a communication path between the monitoring terminal and a plurality of monitoring centers and notifying the operating status of the monitoring center to the monitoring terminal will be described.

In the figure, the monitoring terminal a and the monitoring center s
And are connected via a network (NW). Since the monitoring terminal a and the monitoring center s are connected via a network, both communication control units a3 and s3 are logically connected to each other when data communication is required, instead of being physically connected to a dedicated line. Set up a proper path and perform data communication via the network.

The network management units a1 and s1 mainly include communication path management units a2 and s2 for managing information relating to the network, for example, information for setting a communication path. Further, the communication control units a3 and s3 perform an operation of setting a communication path via the network based on the information from the communication path management unit a2 or s2.

Health check control unit s in the monitoring center s
Reference numeral 4 is a part for generating information for notifying the operating status of the monitoring center itself to the monitoring terminal a and detecting a response from the monitoring terminal. The health check control unit a4 of the monitoring terminal is a unit that extracts operating state information sent from the monitoring center and sends response information to the monitoring center.

The monitoring center operation management unit a5 receives the extracted operating state information and executes a monitoring process according to the operating state. For example, the operating center information is stored in the monitoring center operating state memory. While storing in part a6,
By comparing and judging the information stored in the monitoring center operating state storage section a6 with the received information, the display apparatus control section a7 is notified of change information of the current monitoring state and the like. The display device control unit a7 also causes the display device a8 to display the received change information and the like.

The above is the main configuration of the monitoring center s and the monitoring terminal a in the first embodiment, and it can be realized by hardware such as a dedicated LSI. However, in consideration of change / addition of specifications, CPU, ROM, RAM It is preferable that the respective functions be realized by peripheral circuits such as an I / O interface, a timer, etc. and their control programs.

Further, the setting of the communication path between the monitoring terminal a and the monitoring center, the method of transferring various information, the format of the transferred information, etc. are not particularly specified, and it is possible to connect to the network to be used. In addition, any method and format can be used for transfer. For example, if the network is a packet switched network, X. Any data format may be used as long as it has an information format that can be transferred by a transfer procedure conforming to the 25 standard.

FIG. 7 shows an example of a sequence diagram of the first embodiment of the present invention. Here, an example of setting a communication path between the monitoring terminal and the two monitoring centers A and B is shown, but the same procedure can be executed even if the number of monitoring centers is three or more. The sequence will be described below with reference to FIGS. 6 and 7.

In (1) of FIGS. 6 and 7, when the monitoring terminal is activated, or periodically, the communication path management unit 2a of the monitoring terminal operates with a plurality of monitoring centers A and B and self. The communication path setting request information is sent to the communication control unit a3, and the communication control unit a3 receiving this request issues a request for setting the communication path to the monitoring centers A and B on the network.

In (2) of the figure, the communication control unit s3 of each monitoring center notifies the communication path management unit s2 of the received path setting request. In (3) of the figure, when the communication path management unit s2 of each monitoring center is a path setting request from the monitoring terminal that may permit the setting of the communication path based on the information managed therein. To the monitoring terminal a via the communication control unit s3.

In (4) of the figure, when the communication control unit a3 of the monitoring terminal receives the communication path setting response, it notifies the communication management unit a2. By the above procedure, the monitoring terminal a
This means that communication paths have been set between the monitoring center A and the monitoring centers A and B, respectively. After that, the required information can be freely transferred between the monitoring terminal a and the monitoring centers A and B when needed.

Next, in (5) of the figure, the communication path management unit s2 of the monitoring center sends a health check inquiry, which is data including information on its own operating state, to the monitoring terminal a. Request the health check control unit s4.

On the other hand, in (6) of the figure, the communication path management unit a2 of the monitoring terminal a instructs the health check control unit a4 to receive the health check inquiry sent from the monitoring centers A and B next. To notify you.

In (7) of the figure, monitoring centers A and B
The health check control unit s4 transmits the health check inquiry to the monitoring terminal a via the communication control unit s3. In (8) of the figure, the communication control unit a3 of the monitoring terminal sends the received health check inquiry to the health check control unit a4.
Notify to In (9) of the figure, the health check control unit a4 extracts information on the operating state of the monitoring center from the health check inquiry and notifies the monitoring center operating state management unit a5.

In (10) of the figure, the monitoring center operating status management unit a5 of the monitoring terminal stores the operating status of each monitoring center A or B in the monitoring center operating status storage unit a6. In (11) of the figure, the monitoring center operating status management unit a5 of the monitoring terminal retrieves the operating status of each monitoring center from the monitoring center operating status storage unit a6 as necessary and notifies the display device control unit a7.

In (12) of the figure, the display device control section a7 of the monitoring terminal transmits the notified operating state of the monitoring center to the display device a8. In (13) of the figure, the display device a8 displays the operating state of each monitoring center.

In (14) of the figure, the monitoring terminal health check control unit a4 sends back a health check response for each monitoring center A, B to each monitoring center A, B using the communication control unit a3. In (15) of the figure, the communication control unit s3 of the monitoring center receives the health check response and notifies the health check control unit s4.

As described above, the communication path between the monitoring centers A and B and the monitoring terminal a is set, the information regarding the operating state of the monitoring center is transferred to the monitoring terminal, and the maintenance is resident on the monitoring terminal side. Displayed to the operator.

Further, in order to detect the failure of the monitoring center on the monitoring terminal side, it is desirable that the series of sequences relating to the inquiry about the health check and the response thereto be periodically performed.

For example, as shown in (16) of the figure, 90
The health check inquiry is transmitted from the monitoring centers A and B to the monitoring terminal at a second cycle, while the health check control unit a4 of the monitoring terminal determines whether or not the inquiry is sent from the monitoring center for a predetermined period. When the inquiry is received, the health check response is sent back to the monitoring center that sent the inquiry.

If a health check inquiry is not detected in the monitoring terminal within a predetermined period, it is considered that the monitoring center in which the inquiry is not detected is abnormal, and the above-mentioned (9) to (13) are performed. The same processing as the above processing is executed to display on the display device that an abnormality has occurred in the monitoring center as shown in (17) of the figure.

In this way, when an abnormality is detected in the current monitoring center that is currently receiving the monitoring information, for example, A, the monitoring terminal has received the information on the operating state of the other monitoring center B. It is not necessary to set a communication path to the second monitoring center, and the active monitoring center can be immediately switched to receive the monitoring information from the other monitoring center B. That is, even if a failure occurs in the monitoring center, the continuity of network monitoring can be maintained almost as it is and the monitoring can be continued.

Second Embodiment: FIG. 8 is a block diagram showing a schematic structure of a second embodiment of the present invention. Here, a process of transferring the operating state of a certain monitoring center stored in the monitoring terminal to another monitoring center will be described.

In FIG. 8, the monitoring center s has a monitoring center operating state management unit s5 and a monitoring center operating state storage unit s.
6 is provided. The monitoring center operating state management unit s5 receives the information on the operating state of another monitoring center different from this monitoring center sent from the health check control unit s4,
This information is stored in the monitoring center operating state storage unit s6. The information stored in the monitoring center operating status storage unit s6 includes, for example, the congestion status of the monitoring center CPU in another monitoring center, the monitoring center maintenance status (in operation / maintenance work), and the like.

Next, the processing procedure in the second embodiment will be described. The processings (1) to (12) in the first embodiment shown in FIG. 7 are carried out, and thereafter the following processings are carried out.

In (21) of FIG. 8, the monitoring center operating state management unit a5 of the monitoring terminal a reads the information regarding the operating state of the monitoring center stored in the monitoring center operating state storage unit a6, and the health check control unit a4. Notify to. At this time, the information read is information on the operating state of another monitoring center different from the monitoring center to be transmitted. For example, the operating state information of the monitoring center B is sent to the monitoring center A.

Next, in (22) of FIG. 8, the health check control unit a4 of the monitoring terminal puts the information on the operating state of another monitoring center in the data of the health check response, and the communication control unit a3. Through the health check response to the monitoring center. In (23) of FIG. 8, the communication control unit s3 of the monitoring center receives this health check response and notifies the health check control unit s4.

In (24) of FIG. 8, the health check control unit s4 of the monitoring center extracts the operating state information of the other monitoring centers included in the health check response and extracts the monitoring center operating state management unit s5. Notify to. Figure 8 (25)
In the above, the center operating state management unit s5 stores the received information on the operating state of the other monitoring center in the monitoring center operating state storage unit s6. As described above, a certain monitoring center is notified of information on the operating states of other monitoring centers.

Therefore, when the current monitoring center A has to be temporarily stopped for some reason such as repair, information on the operating state of the monitoring center A is sent to the other monitoring centers B before the stop. If it is transmitted, the current state of network monitoring can be made continuous, and since duplicate notification of monitoring information such as an alarm can be avoided, the maintainability of network monitoring is also improved.

[ Embodiment 3 ] FIG. 9 is a block diagram showing the outline of the construction of Embodiment 3 of the present invention. Here, a process in which the monitoring terminal always selects the monitoring center having the latest version number information based on the version number information regarding the network configuration notified from the monitoring center will be described.

Here, the version number information is a revision number related to the configuration of the network device to be monitored, and when a new network device is added or deleted or the connection relationship of the network device is changed. This version number information is updated when any change is made to the network configuration.

The third embodiment is characterized in that the monitoring center s is provided with a configuration data management unit s7, a configuration data version number management unit s8, and a configuration data storage unit s9. Further, the monitoring terminal a is characterized by including a configuration data management unit a10, a configuration data version number management unit a9, a configuration data version number storage unit a11, and a configuration data storage unit a12.

Here, the configuration data includes the name, type, installation position, connection relationship between network devices, etc. of the network device to be monitored. The configuration data storage units s9 and a12 store the configuration data as described above.

In the monitoring center, the configuration data stored in the configuration data storage unit s9 is updated every time the configuration of the network device is changed, and at the same time, the version number information of the network configuration data is updated. here,
This version number information is also stored in the configuration data storage unit s9.

To update the configuration data, the network administrator may input the configuration data, or the monitoring center may voluntarily make inquiries to the network equipment to periodically check the connection relationship and the like. It is also possible by.
The configuration data version management unit s8 of the monitoring center is a part that reads out the version number information of the configuration data and notifies it to the monitoring terminal side. The configuration data management unit s7 is stored in the configuration data storage unit s9. This is a part for reading the configuration data and notifying it to the monitoring terminal side.

The configuration data management section a10 of the monitoring terminal a is
The configuration data is read and written from the configuration data storage unit a12, and the version number of the configuration data currently stored in the configuration data storage unit a12 is compared with the version number information sent from the monitoring center. Then, it has a function of requesting the configuration data of a newer version.

Configuration data version management section a9 of the monitoring terminal a
Stores the version number information sent from the monitoring center in the configuration data version number storage unit a11, or reads it in reverse, and notifies the configuration data management unit a10 of the version number information.

The processing procedure in the third embodiment will be described below. Here, the first embodiment is performed before the following processing is executed.
It is assumed that the processes (1) to (6) in (3) are performed.

In (31) of FIG. 9, the configuration data version management unit s7 of the monitoring center retrieves the network configuration data version number of its own monitoring center from the configuration data storage unit s9 and notifies the health check control unit s4. To do. In (32) of FIG. 9, the health check control unit s4 of the monitoring center sets the network configuration data version number of the monitoring center in the health check inquiry transmitted to the monitoring terminal,
It transmits to the monitoring terminal using the communication control unit s3.

In (33) of FIG. 9, the communication control unit a3 of the monitoring terminal receives the health check inquiry and notifies the health check control unit a4. In (34) of FIG. 9, the health check control unit a4 of the monitoring terminal extracts the network configuration data version number of the monitoring center from the health check inquiry and notifies the configuration data version number management unit a9.

In (35) of FIG. 9, the configuration data version management unit a9 of the monitoring terminal stores the network configuration data version number of the monitoring center in the configuration data version storage unit a11. In (36) of FIG. 9, the configuration data version management unit a9 of the monitoring terminal retrieves the network configuration data version number of the monitoring center from the configuration data version storage unit a11 and notifies the configuration data management unit a10.

In (37) of FIG. 9, the configuration data management unit a10 of the monitoring terminal retrieves the current network configuration data version number of its own monitoring terminal from the configuration data storage unit a12 and compares it with the configuration data version number of the monitoring center. To do. here,
If there are multiple monitoring centers, the version numbers of the constituent data sent from all monitoring centers are compared.

In (38) of FIG. 9, when there is a monitoring center B having newer configuration data than the current configuration data of its own monitoring terminal, the configuration data management section a10 of the monitoring terminal
Data for requesting the monitoring center B to transmit the configuration data is sent to the monitoring center B using the communication control unit a3.
Send to. If there are multiple monitoring centers, send a configuration data transmission request to the monitoring center that is newer than the current configuration data and has the latest version number of the configuration data sent. To do.

In (39) of FIG. 9, the communication control unit s3 of the monitoring center B receives the transmission request for the configuration data and notifies the configuration data management unit s7. In (40) of FIG. 9, the configuration data management unit s7 sends the transmission request for the network configuration data stored in the configuration data storage unit s9 of its own monitoring center via the communication control unit s3 to the monitoring terminal a. Send to.

In (41) of FIG. 9, the communication control unit a3 of the monitoring terminal a receives the configuration data and transfers it to the configuration data management unit a10. In (42) of FIG. 9, the configuration data management unit a10 of the monitoring terminal a is the configuration data storage unit a.
12 configuration data are updated. After that, in order to maintain continuity of monitoring, it is preferable that the monitoring terminal exchanges monitoring information with the monitoring center having the latest version of the configuration data.

As described above, in the monitoring terminal, the network configuration data stored in the monitoring terminal is always updated to the latest version based on the version number information of the network configuration notified from the monitoring center. Then, the monitoring center having the latest configuration data can be selected to continue the monitoring. Therefore, even if the network configuration is added or changed, the monitoring terminal can immediately continue monitoring, and the maintainability of network monitoring can be improved.

Fourth Embodiment: FIG. 10 shows a fourth embodiment of the present invention.
2 is a block diagram of a configuration outline in FIG. Here, a process in which the monitoring terminal compares the confirmed monitoring information with the monitoring information sent from the monitoring center, extracts unconfirmed monitoring information, and continues monitoring will be described.

The fourth embodiment is characterized in that the monitoring center is provided with an event management section s10, an event storage section s11, and an event reception section s12. Further, the monitoring terminal a is provided with an event management unit a13 and a confirmed event storage unit a14.

Here, the event means information issued from the network device (monitored device) s13 to be monitored, such as notification of the use status of the network device and generation of an alarm.

The event receiving section s12 is a section for receiving information on such an event from the monitored device s13.
The event management unit s10 is an event storage unit s11 for the received event.
It is a part for performing storage control to the device and transmission control to the monitoring terminal side. The confirmed event storage unit a14 of the monitoring terminal is a unit that stores information related to the event that the operator in charge of monitoring has confirmed that the operator has occurred.

The event management unit a13 of the monitoring terminal extracts the event information sent from the monitoring center side and compares it with the event information already stored in the confirmed event storage unit a14. This is an operation for extracting and displaying only information.

The processing procedure in the fourth embodiment will be described below. Here, the first embodiment is performed before the following processing is executed.
It is assumed that the processes (1) to (4) in (3) are performed. That is, a plurality of monitoring centers, here two A and B
It is assumed that a communication path is set up between each location and each monitoring terminal.

In (51) of FIG. 10, the monitoring center A
The event reception unit s12 receives the occurrence event sent from the monitored device in the network and notifies the event management unit s10. In (52) of FIG. 10, the event management unit s10 of the monitoring center A stores the occurrence event in the event storage unit s11.

In (53) of FIG. 10, the monitoring center A
The event management unit s10 of (1) retrieves the occurrence event from the event storage unit s11 and notifies the communication path management unit s2. In (54) of FIG. 10, the communication path management unit s2 of the monitoring center A
Transmits the occurrence event to the monitoring terminal a via the communication control unit s3.

In (55) of FIG. 10, the communication control unit a3 of the monitoring terminal a receives the occurrence event and notifies the communication path management unit a2. In (56) of FIG. 10, the communication path management unit a2 of the monitoring terminal a displays the occurrence event as the event management unit a1.
Notify 3. In (57) of FIG. 10, the monitoring terminal a
The event management unit a13 of the display device control unit a7
Is displayed on the display device a8.

In (58) of FIG. 10, the operator takes a necessary measure by looking at the displayed occurrence event and performs a confirmation operation indicating that this occurrence event has been confirmed. This operation is performed from an input device installed together with the display device, for example, by performing a specific key input. In (59) of FIG. 10, this confirmation operation is notified to the event management unit a13. (6 in FIG.
In 0), the event management unit a13 of the monitoring terminal stores the displayed occurrence event in the confirmed event storage unit a14 as confirmed.

As described above, the event occurring in the monitored device s13 connected to the active monitoring center A is notified to the monitoring terminal, further confirmed by the operator, and stored as the confirmed event.

After that, it is assumed that the monitoring center A is temporarily stopped for maintenance or repair. The information that the monitoring center A is suspended is notified to the operator by notifying the monitoring terminal and displaying it on the display device.

At this time, in (61) of FIG. 10, the operator performs an input operation for requesting switching of the monitoring center to be monitored. In (62) of FIG. 10, the input operation requesting this switching is notified to the event management unit a13 and the communication path management unit a2. In (63) of FIG. 10, the communication path management unit a2 transmits a switching request to the active monitoring center A and the monitoring center B that monitors after switching.

That is, the monitoring terminal a performs communication control of data for requesting the monitoring center A to stop transmission of monitoring information and data for requesting the monitoring center B to transmit monitoring information. It is transmitted via the part a3. In this way, the monitoring terminal transfers the monitoring information with the monitoring center B thereafter.

In (64) of FIG. 10, the monitoring center A
The communication control unit s3 receives the request to stop the transmission of the monitoring information, and notifies the communication path management unit s2. (6 in FIG.
In 5), the communication path management unit s2 of the monitoring center A
The event management unit s10 is notified of this transmission stop request.

In (66) of FIG. 10, the monitoring center B
The communication control unit s3 receives the data requesting the transmission of the monitoring information and notifies the communication path management unit s2. In (67) of FIG. 10, the communication path management unit s2 of the monitoring center B
Is the event management unit s1 for the data requesting the transmission of the monitoring information.
Notify 0. In (68) of FIG. 10, the event management unit s10 of the monitoring center B stores the occurrence event in the event storage unit s11.
And notifies the communication path management unit s2.

In (69) of FIG. 10, the monitoring center B
The communication path management unit s2 transmits the occurrence event to the monitoring terminal a using the communication control unit s3. In (70) of FIG. 10, the communication control unit a3 of the monitoring terminal a receives the occurrence event and notifies the communication path management unit a2. (71) in FIG.
At, the communication path management unit a2 of the monitoring terminal a notifies the event management unit a13 of the occurrence event.

Here, although the occurrence event sent from the monitoring center B is new to the monitoring terminal a, it has already been sent from the monitoring center A and has been confirmed at the monitoring terminal a. In some cases, it is an event.

In this case, since it is not preferable to display and notify the operator again even though the occurrence event has already been confirmed, the received occurrence event is stored in the confirmed event storage unit a14. A comparison is made with the confirmation event.

In (72) of FIG. 10, the event management unit a13 of the monitoring terminal stores the confirmed event in the confirmed event storage unit a1.
4 and extract the difference from the received event,
Only the difference is displayed on the display device a8 using the display device control unit a7. That is, only unconfirmed occurrence events are displayed.

As described above, since the monitoring terminal side judges whether the received information is confirmed or unconfirmed, it is not necessary to display the already confirmed occurrence event again after the switching of the monitoring center, and it is not confirmed. The continuity of monitoring is maintained in the sense that only the occurrence event of is notified to the network maintainer.

Embodiment 5: FIG. 11 shows an embodiment 5 of the present invention.
2 is a block diagram of a configuration outline in FIG. Here, the monitoring center A cannot directly receive the status notification information (occurrence event information) of the network device connected to the monitoring center A and sending the monitoring information only to this monitoring center A. A process of distributing to another monitoring center B will be described.

The fifth embodiment is characterized in that the monitoring center is provided with an event distributing section s14. Event distributor s1
Reference numeral 4 is a part that takes in the occurrence event received by the monitoring center inside and stores it, and transmits it to another monitoring center. Further, the monitored device s13 is provided only in the monitoring center A,
It is assumed that it is set to notify the occurrence event.

The processing procedure in the fifth embodiment will be described below. Here, the first embodiment is performed before the following processing is executed.
It is assumed that the processing from (1) to (4) in (3) is performed. In (81) of FIG. 11, the monitored device s13 that notifies only the monitoring center A of the occurrence event transmits the information to the monitoring center A when the event occurs. In (82) of FIG. 11, the event receiving unit s12 of the monitoring center A
Upon receiving the information on the occurrence event, the notification notifies the event management unit s10 inside the monitoring center A, and also notifies the event distribution unit s14 to send it to another monitoring center B.

In (83) of FIG. 11, the monitoring center A
The event distribution unit s14 transmits the received event information to the monitoring center B. In (84) of FIG. 11, the event management unit s10 of the monitoring center A stores the occurrence event in the event storage unit s.
Store in 11.

In (85) of FIG. 11, the monitoring center B
The event receiving unit s12 notifies the event management unit s10 of the occurrence event. In (86) of FIG. 11, the event management unit s10 of the monitoring center B stores the occurrence event in the event storage unit s11.

By the above processing, the monitoring centers A and B
Can have the same occurrence event and can be said to be in the same monitoring state in both centers. After that, the monitoring center currently in use among the monitoring centers A and B is shown in FIG.
The occurrence event is notified to the monitoring terminal a by performing the processes (3) to (7) shown in FIG.

As described above, since the occurrence event of the network device (monitored device) that can be monitored only by its own monitoring center is distributed to the other monitoring centers, the monitoring target network device is It is not necessary to distinguish whether to notify the monitoring information to only its own monitoring center or to notify the monitoring information to a plurality of monitoring centers including itself. Therefore, the monitoring center can monitor the network more efficiently, including network devices that cannot directly receive the monitoring information.

In the fifth embodiment, when two communication paths can be set between the monitored device s13 and the monitoring center A and between the monitored device s13 and the monitoring center B, the monitored device can be set. By providing s13 with a function of selecting a communication path, it is possible to send the monitoring information, that is, the occurrence event to the monitoring centers A and B through two routes.

That is, normally, the monitoring information is sent from the monitored device s13 to the monitoring center A, and further sent from the event distributing section s14 of the monitoring center A to the monitoring center B. However, the monitoring center A with the monitored device s13 is sent. When the monitored device s13 detects that a failure has occurred in the communication path to
The monitored device s13 switches the communication path to switch to the monitoring center B.
If the monitoring information is sent first and then distributed from the monitoring center B to the monitoring center A, the same monitoring information is sent to both monitoring centers, and the continuity of the monitoring status at both monitoring centers is maintained. Become.

[0109]

According to the present invention, each of a plurality of monitoring terminals sets a communication path for monitoring with a plurality of monitoring centers, and the monitoring terminals operate the plurality of monitoring centers to which the communication paths are set. Since the status is recognized, even if a failure occurs in the monitoring center that receives the monitoring information, the monitoring terminal can smoothly switch to another monitoring center and interrupt the continuity of monitoring. Never. Therefore, a more reliable network monitoring system can be provided.

Further, according to the present invention, since the operating statuses of the monitoring centers can be notified between the monitoring centers via the monitoring terminals, the active monitoring centers are temporarily stopped for maintenance or other reasons. When it is necessary to do so, it is possible to easily know the operating state of the monitoring of the current monitoring center before the stoppage in another monitoring center, and it is possible to maintain the continuity of network monitoring.

Further, according to the present invention, the monitoring terminal always selects the monitoring center having the latest version number information for monitoring based on the version number information notified from the monitoring center. Even if a device constituting the network is added or the configuration is changed, the monitoring terminal can immediately continue monitoring in response to the addition or the change, and the maintainability of network monitoring can be improved.

Further, according to the present invention, the monitoring terminal is adapted to compare the confirmed monitoring information with the monitoring information sent from the monitoring center to extract the unconfirmed monitoring information. When the monitoring center switches to another monitoring center due to a failure, even if the monitoring information sent after switching and the confirmed monitoring information do not match, only the unconfirmed monitoring information is displayed to the network maintainer. be able to. Therefore, even if the monitoring center is switched to another monitoring center, the continuity of network monitoring can be maintained.

Further, according to the present invention, the status notification information of the network device for sending the monitoring information to only one monitoring center is sent to another monitoring center where this monitoring center does not directly receive the status of the network device. Since the distribution is performed, the monitoring center can more efficiently monitor the network including the network devices that do not directly receive the information on the status.

[Brief description of drawings]

FIG. 1 is a first basic configuration block diagram of the present invention.

FIG. 2 is a second basic configuration block diagram of the present invention.

FIG. 3 is a third basic configuration block diagram of the present invention.

FIG. 4 is a block diagram of a fourth basic configuration of the present invention.

FIG. 5 is a fifth basic configuration block diagram of the present invention.

FIG. 6 is a block diagram showing an outline of the configuration in the first embodiment of the present invention.

FIG. 7 is a sequence diagram according to the first embodiment of the present invention.

FIG. 8 is a block diagram showing an outline of the configuration in the second embodiment of the present invention.

FIG. 9 is a block diagram showing an outline of the configuration in the third embodiment of the present invention.

FIG. 10 is a block diagram showing an outline of a configuration in a fourth embodiment of the present invention.

FIG. 11 is a block diagram showing a schematic configuration of a fifth embodiment of the present invention.

FIG. 12 is a conceptual diagram of the configuration of network monitoring.

[Explanation of symbols]

 s1 network management unit s2 communication path management unit s3 communication control unit s4 health check control unit s5 monitoring center operating state management unit s6 monitoring center operating state storage unit s7 configuration data management unit s8 configuration data version management unit s9 configuration data storage unit s10 Event management unit s11 Event storage unit s12 Event reception unit s13 Network device (monitored device) s14 Event distribution unit a1 Network management unit a2 Communication path management unit a3 Communication control unit a4 Health check control unit a5 Monitoring center operating state management unit a6 Monitoring Center operating state storage unit a7 Display device control unit a8 Display device a9 Configuration data version management unit a10 Configuration data management unit a11 Configuration data version storage unit a12 Configuration data storage unit a13 Event management unit a14 Confirmed event storage unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaya Yonezu 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Within the Fujitsu Kansai Communication Systems Co., Ltd. Kansai Communication Systems Co., Ltd. (72) Inventor Yuichi Iwasawa 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Fujitsu Limited

Claims (5)

[Claims] 1. A network monitoring system in which a plurality of monitoring centers for monitoring the operating state of a network and a plurality of monitoring terminals for checking the monitoring information collected in the monitoring center are connected via a network, , A first monitoring path setting means for setting a communication path with the monitoring terminal, and a first operating state notifying means for notifying the operating terminal of its own operating state information, the monitoring terminal comprising: A second monitoring path setting means for setting a communication path with the monitoring center; and a first receiving operation status information notified from the monitoring center.
The second monitoring path setting means of each monitoring terminal operates to set the communication path to the first monitoring path setting means of the plurality of monitoring centers, and the communication paths are After being set, the operating status receiving means of each monitoring terminal receives the operating status information sent from the first operating status notifying means of the plurality of monitoring centers, and each monitoring terminal sets the communication path. A network monitoring system characterized by recognizing the operating statuses of a plurality of monitored centers. 2. The monitoring terminal comprises a second operating status notifying means for notifying the received operating status information of the specific monitoring center A to a monitoring center other than the monitoring center A, and the monitoring center comprises the A second operating state receiving means for receiving operating state information of another monitoring center sent from the second operating state notifying means, wherein a plurality of monitoring centers recognize the operating states of each other. Item 1. The network monitoring system according to Item 1. 3. The monitoring center comprises version number notifying means for notifying the monitoring terminal of version number information indicating the configuration of the network device to be monitored, and the monitoring terminal is notified by the version number notifying means. The version number receiving means for receiving the version number information and the switching means for selectively switching the monitoring center as the transmission source of the monitoring information based on the received version number information are provided. 2. The network monitoring system according to claim 1, wherein the monitoring is performed through a communication path set with the monitoring center that has notified the message. 4. The confirmed information storage means, wherein the monitoring center comprises a response means for returning the possessed monitoring information in response to an inquiry from the monitoring terminal, and the monitoring terminal stores confirmed monitoring information. And an inquiry means for inquiring the monitoring information of the monitoring information currently owned by the monitoring center, and comparing the monitoring information stored in the confirmed information storage means with the monitoring information sent from the monitoring center. ,
An unconfirmed information extracting means for extracting unconfirmed monitoring information and a display means for displaying the monitoring information are provided, and the monitoring terminal displays only the unconfirmed monitoring information extracted by the unconfirmed information extracting means on the display means. The network monitoring system according to claim 1. 5. The status notification receiving means for the status monitoring center to receive status notification information sent from a network device to be monitored, and status notification distributing means for distributing the status notification information received to other monitoring centers. By distributing the status notification information of the network device connected to the specific monitoring center to the other monitoring center, the specific status of the network device is not directly received by the specific monitoring center. The network monitoring system according to claim 1, wherein the monitoring center also monitors the status of the network device.