JP2002223293A - Method and system for maintaining/managing network - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a system for maintaining/managing a network in which a trouble alarm can be monitored accurately during actual maintenance work. SOLUTION: A trouble alarm being generated from each unit 106, 107, 108 constituting a network during maintenance work is determined by simulation 110. An alarm comparator 111 compares a trouble alarm generated during actual maintenance work with a trouble alarm determined by simulation 110 thus distinguishing an actually occurred trouble alarm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network maintenance management method and apparatus for monitoring a failure alarm when a maintenance work is performed in a large-scale and complicated communication network which is a core of information communication.

[0002]

2. Description of the Related Art In recent years, with the development of information and communication technology, the demand for networks for transmitting information has been increasing, and the number of network design, construction, and maintenance operations in the communication business has been increasing. The network includes a transmission device and a transmission line. When a failure occurs in a connection portion of the transmission device or the like, a failure alarm is generated and a monitor is notified.
The transmission device usually has a plurality of connection units, and issues a fault alarm from each of the connection units.

At the time of actual maintenance work of a network, a failure alarm is generated from each device such as a transmission device constituting a network which is in an affected range (reach range) affected by the maintenance work. For this reason, it is extremely difficult to determine whether the alarm is a fault alarm due to the actual maintenance work or a fault alarm that has actually occurred, and the burden on the observer who performs the task of monitoring the fault alarm increases.

[0004] It is known that, in order to reduce the burden on a supervisor who performs a monitoring operation of a fault alarm, a fault alarm generated from each device is suppressed by a maintenance work. For example, JP
Japanese Patent Application Laid-Open No. 173774 describes that a setting is made so that the occurrence of an alarm is suppressed for each device that generates a fault alarm by a maintenance operation.

In Japanese Patent Application Laid-Open No. 7-87191, a spillover alarm is added to a target of alarm identification, thereby causing a fault alarm from each device to be subjected to maintenance work and an effect of the maintenance work. It is described that the spread alarm is distinguished from a fault alarm caused by an actually occurring accident or failure.

[0006]

The prior art uses a network configuration information at a planning stage of a maintenance work to grasp a fault alarm generated from a transmission device at the time of an actual maintenance work, and to recognize an actual accident or failure. It is identified as a fault alarm by Therefore, the network configuration at the time of inputting the work plan and the network configuration at the time of the actual maintenance work need to be the same.

[0007] However, the time when the actual maintenance work is performed after the maintenance work is planned usually takes a long time.
The elapsed time is often, for example, about one week. The network configuration is frequently changed and added, and it is inevitable that the network configuration changes from the time of planning the maintenance work to the time of performing the actual maintenance work.

For this reason, the range of influence of the occurrence of a fault alarm changes due to the maintenance work, making it difficult to determine whether the fault alarm is due to actual maintenance work or a fault alarm that has actually occurred, and the fault warning cannot be accurately monitored. There is a problem that.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a network maintenance management method and apparatus capable of accurately monitoring a fault alarm during actual maintenance work.

[0010]

The feature of the present invention resides in that at the time of maintenance work of each device constituting a network, a fault alarm generated from each device affected by the maintenance work is obtained by simulation, and the actual alarm is obtained. An object of the present invention is to discriminate an actually generated fault alarm by comparing a fault alarm generated during a maintenance operation with a fault alarm obtained by simulation.

In other words, the present invention resides in that, out of the fault alarms generated during the actual maintenance work, those other than the fault alarms obtained in advance by simulation are determined to be the fault alarms actually generated.

According to the present invention, when an actual maintenance operation is started, a failure alarm generated in the maintenance operation can be obtained by simulation, so that it is possible to reliably determine whether the alarm is a failure alarm generated by the actual maintenance operation or an actually generated alarm. Monitoring of fault alarms can be performed accurately.

[0013]

FIG. 1 shows an embodiment of the present invention.

In FIG. 1, transmission devices 106, 107,
Reference numeral 108 denotes transmission devices 106 and 107 connected by a transmission line 109. In FIG. 1, the transmission devices 106, 107, 108
(Network configuration) is simplified.
The fault alarms generated by the transmission devices 106, 107 and 108 are transmitted to the alarm comparison device 111 via the dedicated communication line 105 for transmitting the alarm.

The terminal 100 allows the observer to input a maintenance work plan, work start / end date and time, etc. while viewing the display screen.
The content of the fault alert is displayed. The work plan information input at the terminal 100 is recorded in the recording means 101. The work plan information includes the work number 70 as shown in the work plan list screen 301 shown in FIG. 3 and the work detailed information screen 401 shown in FIG.
3, work target device 708, work manager 707, scheduled work times 705 and 706, and the like.

The recording means 102 records information (data) of a transmission path, that is, a network configuration, and stores design information 103 of the transmission path which is sequentially updated. The recording device 102 includes a transmission device, a transmission line,
The accommodating relationship of the line (the terminating relationship of the transmission line) is recorded.

The alarm simulation 110 inputs the work plan information (maintenance work content) recorded in the recording means 101 and the network configuration information recorded in the recording means 102 at the start of the maintenance work, and outputs the contents of the maintenance work. Simulate and obtain a fault alarm which is affected by the type and is generated from each device (transmission device). That is, the alarm simulation 110 finds each device (transmission device) that is within the range of influence (spread range) of the maintenance work.

The network configuration information of the transmission device, transmission line, and line affected by the maintenance work obtained by the alarm simulation 110 is recorded in the recording means 104.
The alarm comparison device 111 includes transmission devices 106, 107, and 108.
Then, a fault alarm transmitted from the communication line 105 via the communication line 105 is compared with a fault alarm generated by the maintenance work obtained by the alarm simulation 110 to determine a fault alarm actually generated. . The alarm comparison device 111 adds a fault alarm which is generated and notified to the terminal 100 during actual maintenance work.

Next, the operation will be described.

FIG. 2 shows a flow of alarm suppression during maintenance work according to the present invention.

In step 201, a work to be performed is input from the work plan list screen 301 shown in FIG. On the work plan list screen 301, a work number 703, a work name 704, scheduled work times 705, 70
6. Detail display switch 711, work start switch 71
2. The work end switch 713 is displayed.

The work number 7 is displayed on the work plan list screen 301.
03, a work name 704, and scheduled work times 705 and 706 are input. Then, the detail display switch 711 is operated to display the detailed work information screen 401 shown in FIG. 4, and a work plan for the work manager 707, the work target device 708, the part 709, etc. is input. The entered maintenance work plan information is
It is recorded in the recording means 101.

FIGS. 3 and 4 show examples of the input screen of the work plan in the terminal 100. In this example, a list screen 301 of the planned work and a screen 401 for inputting and referring to detailed information of the work are shown. Each screen is displayed as a separate window. The screen 401 can be called from the screen 301 and a plurality of screens can be displayed on the terminal 104.

At the start of actual work, the observer proceeds to step 2
In 02, the terminal 100 inputs an operation start for the corresponding maintenance operation. The work start input is reflected on the work plan recording means 101, and is recorded as the work result. When the operation start is input, the alarm simulation 110 is started in step 203.

FIG. 5 shows a flow of the alarm simulation 110.

The alarm simulation 110 is executed in step 501 by the work plan recording means 101 by the work number 703, the work target device 708 and its part (connection part) 70.
9 is acquired. Then, the work target device 708 and its part 709 obtained from the work plan recording means 101 are specified by the transmission path configuration (network configuration) recording means 102.

The part 7 specified in step 502
09 from the transmission line configuration (for example, the transmission device 10
7) The information of the transmission line and line accommodated in the part 709 is acquired. In step 503, another apparatus accommodating the transmission path / line accommodated by the apparatus to be operated and its part are acquired from the recording means 102 of the transmission path configuration.

In step 504, the apparatus 715 obtained by the above processing and its part 716 are recorded as a work-affected apparatus table 702 together with the work number 703 as the apparatus 715 and the part 716 affected by the work as shown in FIG. Record in 104.

The process proceeds from step 504 to step 505, where it is determined whether there is another transmission line or line. If there is, the process returns to step 502 and repeats the process.

If it is determined in step 505 that there is no other transmission line or line, the flow shifts to step 506 to determine whether there is another construction target device. When there is another construction target device, the process returns to the process of step 501 and is repeatedly executed, and when there is no other device, the alarm simulation ends.

In the alarm simulation, it is possible to simulate which alarm is to be generated in which transmission device by using the rules of transmission of the alarm of the transmission device and the configuration of the transmission line.

Returning to FIG. 2, the observer (operator) inputs the start of work to the terminal 100, performs a simulation in step 203, and moves to step 205 to actually work on the transmission device. Assuming that the work target device is the transmission device 106 and the work site is the position for housing the transmission path 109, the work target transmission device 106 is affected by the maintenance work and generates a fault alarm. The transmission device 107 connected to the transmission device 106 on the transmission path configuration generates a fault alarm due to the influence of the maintenance work of the transmission device 106 to be operated. Alarm information from the work target device 106 and the transmission device 107 that has generated a fault alarm is sent to the alarm comparison device 111 via the dedicated transmission line 105.

Upon input of the fault alarm, the alarm comparing device 111 obtains the device to be worked and the device and the portion to be identified by the simulation result recorded in the recording means 104 in step 206, and obtains the transmission device 106,
A comparison is made with the fault alarm from 107. If the fault alarm information matches the acquired alarm generator and site,
Information to the effect that the alarm is due to work is added to the alarm information.
If the alarm information does not match the acquired alarm information of the identification target, it is determined that the alarm is due to an accident or a failure, and the alarm is transmitted to the terminal 100 without adding information.

The terminal 100 refers to the failure alarm and displays the failure alarm due to the maintenance work and the failure alarm due to an actual accident or a failure so that the person monitoring the transmission line can distinguish it by a method such as color change or message addition. I do. At step 207, an alarm monitoring image is displayed. FIG. 6 shows an example of the alarm monitoring screen displayed on the terminal 100. FIG. 6 shows an example in which a fault alarm (work alarm) due to maintenance work is also displayed, and a hatched fault alarm is due to maintenance work.

Since only the device to be identified for the work actually being performed is recorded in the recording means 104 as the object to be identified, the time required to search for the alarm from the transmission device as the object to be identified is reduced, and the trouble is reduced. The time lag for displaying the alarm information on the terminal 100 is reduced.

At the end of the work, the terminal 100 inputs the end of the work using the screen 301 in step 208. The end information is recorded as the actual work result in the work plan recording means 101. When the end of the work is input, the work affecting device table 702 belonging to the work number 703 for which the work has been completed is deleted from the recording unit 104.

Thereafter, the alarm issued from the transmission device is treated as an alarm for an accident or a failure. As described above, since the start and end times of the alarm identification are performed using the actual times of the start and end of the work, the work alarm can be identified without being affected by the deviation of the work time from the scheduled time.

As described above, the present invention monitors a fault alarm generated at the time of maintenance work of each device constituting the network. However, at the start of actual maintenance work, a fault alarm generated at the time of maintenance work is obtained by simulation. Since it is possible to reliably determine whether a fault alarm is generated by actual maintenance work or a fault alarm that has actually occurred, it is possible to accurately monitor the fault warning during the actual maintenance work.

In addition, the information of the spread alarm is created by inputting the start of the maintenance work, and the discrimination from the alarm of the accident or the failure is started, so that the actual work time can be managed regardless of the scheduled work time. Will do. By managing the work in real time, it is possible to accurately specify the time for identifying the alarm. Even when the start and end times of the work are changed, it is possible to reliably discriminate between the work alarm and the accident or failure alarm.

[0040]

According to the present invention, at the start of the actual maintenance work, a failure alarm generated in the maintenance work is obtained by simulation, so that it is possible to reliably determine whether the failure alarm is due to the actual maintenance work or a failure alarm actually generated. It is possible to accurately monitor fault alarms during work.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one example of the present invention.

FIG. 2 is a flowchart illustrating the operation of the present invention.

FIG. 3 is an example of a screen for performing maintenance work planning and starting and ending the work.

FIG. 4 is an example of a screen for inputting detailed information of a work plan.

FIG. 5 is an operation flowchart of an alarm simulation according to the present invention.

FIG. 6 is an example of a screen for monitoring a maintenance alarm.

FIG. 7 is a diagram illustrating a relationship between a work plan table and a work influence device table.

[Explanation of symbols]

 101 Recording means of work plan 102 Recording means of transmission path configuration 103 Transmission path design information 104 Recording means of the device to be identified for alarm 105 Dedicated communication line 106 for transmitting alarm 106, 107, 108 Transmission device 109 Transmission line 110 Alarm simulation device 111 Alarm comparison device 301 Work plan list screen 401 Detailed work information screen 601 Transmission device alarm monitoring screen 701 Work plan table 702 Work influence device table

Continuation of the front page F term (reference) 5K030 GA12 HB11 KA07 MA01 MB01 5K051 AA09 CC00 FF01 KK05 LL00

Claims (8)

[Claims] An object of the present invention is to manage a fault alarm generated from each device constituting a network, and to perform a fault generated from each device affected by the maintenance work at the time of maintenance work of the device constituting the network. A network maintenance management method, wherein an alarm is obtained by simulation, and a fault alarm generated during actual maintenance work is compared with a fault alarm obtained by the simulation to determine a fault alarm actually generated. 2. A system for managing fault alarms generated from a plurality of devices constituting a network, wherein a maintenance operation of the devices constituting the network is performed by performing a simulation using the network configuration information to perform the maintenance operation. A fault alarm generated from the plurality of devices in the affected range is obtained, and a fault alarm generated during actual maintenance work is compared with a fault alarm obtained by the simulation to determine a fault alarm actually generated. A network maintenance management method. 3. A system for managing a failure alarm generated from a connection unit in a plurality of transmission devices constituting a network, wherein a maintenance operation of the transmission device is performed by performing a simulation using the network configuration information. A fault alarm generated from the connection portion of the transmission device in the range of the transmission is determined, and among the fault alarms generated during the actual maintenance work, those other than the fault alarm determined by the simulation are determined to be the fault alarms actually generated. A network maintenance management method, characterized in that: 4. A system for managing fault alarms generated from a plurality of transmission devices constituting a network, wherein a maintenance operation of the transmission device is simulated using configuration data of the network, and the maintenance operation is performed by the maintenance operation. A fault alarm generated from the transmission device is obtained, and among the fault alarms generated during the actual maintenance work, those other than the fault alarm obtained by the simulation are determined as the actually generated fault alarms, and are identified and displayed on the display device. A network maintenance management method. 5. A system for managing a fault alarm generated from each device constituting a network, wherein a simulation of a fault alarm generated by each device affected by the maintenance work at the time of maintenance work of the device forming the network is performed. Network maintenance characterized by comprising simulation means determined by the above-mentioned method and alarm determination means for determining a failure alarm actually generated by comparing a failure alarm generated during the actual maintenance work with the failure alarm determined by the simulation means. Management device. 6. A system for managing fault alarms generated from a plurality of devices constituting a network, wherein a maintenance operation of the devices constituting the network is simulated using the network configuration information, and an influence range of the maintenance operation is performed. Simulation means for obtaining a fault alarm generated from the plurality of devices, and alarm determination for comparing a fault alarm generated during actual maintenance work with the fault alarm obtained by the simulation means to determine a fault alarm actually generated. And a network maintenance management device. 7. A terminal device for managing a fault alarm generated from a connection unit in a plurality of transmission devices constituting a network, and a maintenance operation for the transmission device, wherein a simulation is performed using the network configuration information in performing a maintenance operation of the transmission device. Simulation means for obtaining a fault alarm generated from the connection portion of the transmission device in the transmission range; and discrimination between a fault alarm generated during actual maintenance work other than the fault alarm obtained by the simulation means. A network maintenance management device, comprising: 8. A terminal device for displaying and managing fault alerts generated from a plurality of transmission devices constituting a network, and a maintenance operation for the transmission device, wherein the maintenance operation is carried out by performing a simulation using the network configuration data upon maintenance work of the transmission device. Simulation means for obtaining a fault alarm generated from the transmission device, a storage means for storing the fault alarm obtained by the simulation means, a fault alarm generated during actual maintenance work, and the simulation stored in the storage means. And a warning determining means for determining the actually generated fault warning by comparing the fault warnings obtained by the above-mentioned method, and causing the terminal device to identify and display the fault warning.