JPH096571A - Network management system and fault location display method - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a network management system capable of easily confirming the location of a network failure. Configuration: Network fault information is collected in a network management device 1 via status detection devices 5-7 connected to each LAN 2-4 and reflected on a network layout screen 19a of a display device 9. The state detection device is for each LAN
When a failure occurs, the failure notification data including the distance information to the failure point is notified to the network management device 1. In the network management device 1, the failure notification is analyzed, the physical failure location mapping module 25 maps the location of the failure on the network configuration diagram, and the physical failure location display module 26 creates the failure on the layout display screen 19a. The fault display mark 111 is output at the position. The detailed information of the failure is displayed on the failure information display screen 19b. [Effect] By displaying the location of the failure in the physical network configuration diagram, the maintenance personnel can easily confirm the location of the failure and quickly perform the failure recovery process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network management system, more specifically, for example, LAN (Local Area Neighbor)
The present invention relates to a fault position display method for displaying a fault occurrence position in a network such as a twork) or a WAN (Wide Area Network) on a monitor screen.

[0002]

2. Description of the Related Art As a method of monitoring and displaying a failure in a LAN, for example, as described in Japanese Patent Application Laid-Open No. 4-76651, when a failure occurs in any device connected to the LAN, If you change the display color of the graphic part corresponding to the faulty device on the network configuration diagram displayed on the display screen and the fault occurs in the cable that constitutes the LAN transmission line, the network that corresponds to the faulty cable A method of notifying the occurrence of a failure by changing the display color over the entire cable figure on the configuration diagram is known.

[0003]

However, in the method of changing the display color of the entire faulty cable figure on the network configuration diagram when a fault occurs in any of the cables as in the above-mentioned prior art, Even if it is possible to inform the operator (or network maintenance personnel) that the fault is occurring on the cable, it is not possible to tell at what point the actual fault occurred. Therefore, there is a problem that the maintenance staff is obliged to perform an inspection work on the entire cable where the failure has occurred at the network laying site in order to recover from the failure.

It is an object of the present invention to provide a network management system and a failure position display method capable of identifying a failure location on a display screen when a failure occurs in a network.

[0005]

In order to achieve the above object, the present invention displays a data processing device, a display device, and a physical configuration diagram of the network and failure information on the screen of the display device. Storage device for storing a data record necessary for the operation, and an input device operated by an operator, and the data processing device is a failure from a state detection device connected to a network accommodating a plurality of information devices. In a network management system configured to receive a notification and update the display content of the display device according to the fault notification information and an operator input from the input device, the state detection device has occurred or recovered in the network. A fault notification including the type of fault and position information indicating the position where the fault has occurred is issued, and the data processing device sets A means for converting the fault position information indicated by the fault notification into position data on the network configuration diagram displayed on the display screen based on the data record stored in the device; It is characterized in that a failure mark is displayed or erased at a failure location on the network configuration diagram according to the occurrence or recovery of the failure in the network.

More specifically, as the data record, for example, for each cable segment obtained by dividing the network transmission line into a plurality, the cable segment length and the connection position of the state detecting device on the network transmission line are described. A distance information record including the cable segment position information measured as the starting point is stored, and for example, a state detection device such as a network analyzer indicates a fault position by a cable length from a connection point of the state detection device to the fault point. Issue a failure notification, and the data processor
The network configuration diagram is searched from the storage device for a distance information record having cable segment position information corresponding to the failure position indicated by the failure notification, and based on the content of the distance information record and the cable length at the failure position. Determine the location of the obstacle above. The cable segment position information indicates, for example, the cable length from the connection position of the state detection device to the terminal position of the cable segment measured, and the data processing device indicates the cable length and the cable length indicated in the state notification. The fault position on the network configuration diagram is calculated from the difference between the above and the cable segment length.

[0007]

According to the present invention, when a failure occurs on the transmission line of the network, the failure mark is displayed at the failure occurrence point on the physical network configuration diagram output on the display screen. It becomes possible for a staff member to confirm a fault occurrence position on the screen and quickly perform a fault recovery procedure.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall configuration of a network system to which a fault location display according to the present invention is applied. The network system includes a network management device 1 for monitoring the state of the network, Ethernets 2, 3, and 4 that compose a network such as a LAN or WAN, and each L.
A state detecting device (network analyzer) 5, 6, 7 connected to the AN for detecting the operating state of the LAN and notifying the network management device 1 of state information such as a fault, the network analyzer 5, 6, and the network management device 1
Connection lines 11 and 12 for directly connecting to each other, a remote network analyzer 7 and a network management device 1
And a network 13 for connecting and. The network 13 is, for example, a public line, and the connection lines 11 and 12 may be dedicated lines or public lines. The network management device 1 has a CPU 2
0, a memory 21 and a screen buffer (VBUF) 23, a data processing device 1A, a file storage device 8 for storing various information used by the network management program 22 stored in the memory, and a display device. 9
And an input device such as a keyboard 10a and a mouse 10b for operating the network management device. The network management device 1 can be configured by a personal computer, a workstation, or the like.

The display device 9 uses a multi-window method to display a layout display screen (window) 19a for displaying a physical network configuration diagram, and the types, dates and places of occurrence of all currently occurring faults. A failure information display screen 19b for displaying a failure history display screen 19b and a failure history display screen 19c for displaying a history of failures that have occurred so far are generated.

The file storage device 8 includes an Ethernet 2,
A cable wiring file 14 for storing the cable lengths of 3 and 4 and cable wiring positions, and a layout file 1 for managing the physical wiring diagram of the network.
5, a physical arrangement file 16 for managing the connection positions of devices connected to the network, a failure history file 17 for managing the history of occurrence of failures on the network, and a display symbol for the failure that has occurred And a failure identification file 18 for managing A unique identification code is given to each figure showing each device and cable in the physical wiring diagram of the network managed by the layout file 15.

FIG. 2 shows a network management program 22.
The module configuration of is shown. The network management program 22 is executed by the network analyzers 5, 6, 7 from the LAN
A network monitoring module 24 for acquiring the status of
When the LAN monitoring module 24 detects a LAN failure, the location of the failure and the physical layout file 16
A physical fault location mapping module 25 for mapping the physical network configuration diagram stored in
A physical failure position display module 26 that displays the physical failure position on the display device 9 based on the information mapped by the physical failure position mapping module 24, and a failure history management module 2 that manages the history of failures that have occurred so far.
7 and a display area changing module 28 for changing the area displayed on the layout display screen 19b.

FIG. 3 shows an example of a display screen on the display device 9 when a failure occurs in the network. When the network management program 22 detects a failure that has occurred on the network, it displays the symbol 111 indicating the failure occurrence point on the layout display screen 19a, and displays the failure name, the Ethernet name where the failure occurred, the failure occurrence location and the date and time. A failure information display screen 19b including the same is generated. In the display example of FIG. 3, at 9:10 on June 10 (“06100910”), “Ether1” on the second floor (“2F”) is broken.

FIG. 4 shows an example of the fault history display screen 19c displayed when the operator gives an instruction to display the fault history from the input device such as the keyboard 10a or the mouse 10b. On the fault history display screen 19c, the name of the fault currently occurring ("fault name") and the Ethernet in which the fault occurred
The name, the location of the fault, the date and time of the fault, and the date and time of the fault recovery are output in a list format. In the display example of FIG. 4, 2
Fault history is displayed for 2 "open" faults and 2 "short" faults.
A short of 3 indicates that the disability is still unrecovered.

FIG. 5 shows the network monitoring module 24.
3 shows a processing flow. Network monitoring module 24
Determines whether there is received data from the state detection device (analyzer 5, 6, or 7) (step 31).
If there is no received data, it is determined whether or not there is operator input (input from the keyboard 10a or mouse 10b) (step 32). If there is no operator input, the process returns to step 31 and the same judgment is repeated.

In the received data (fault notification) from the state detection device, the name of the fault that has newly occurred or recovered, the distance from the fault occurrence position to the network analyzer (cable length), and the time when the fault occurred. Or the recovery time is included. If there is received data from the state detection device in step 31, it is determined whether or not the contents of the received data should be output as a failure display on the display screen by referring to the failure identification file 18 based on the received data. (Step 37). If the received data has a failure content to be displayed, the physical failure position mapping module 25 described later is executed (step 38), the received data is registered in the failure history file 17, and the original step 31 is performed. Return. If the received data is failure data that does not require display, the received data is registered in the failure history file 17 (step 39) without executing the physical failure position mapping module 25, and step 31 is performed.
Return to

If there is an operator input in step 32, it is judged whether or not the operator input is a failure history display instruction (step 33), and if it is a failure history display instruction, the failure history management module 27 is executed (step 34). After that, the process returns to step 31. If the operator input is not a failure history display instruction, it is determined whether or not it is a display area change instruction (step 35). If it is a display area change instruction, the display area change module 28 is executed (step 36). After that, the process returns to step 31. When the operator input is not the display area change instruction but the system end instruction, the execution of the network monitoring module 24 is ended, and the network management is ended.

FIG. 6A shows a cable wiring file 14
An example of the record format of the distance information record 40 stored in FIG. In the present invention, each line track (Ethernet) in the network to be monitored is divided into a plurality of line segments (cable segments) according to the physical wiring layout or the display layout on the display screen, Prepare a distance information record for each cable segment.

Each distance information record 40 includes an identification code 41 unique to each cable segment in the drawing file managed by the layout file 15, an Ethernet name 42 corresponding to the cable segment, and the cable segment from the network analyzer. An actual cable length (position information of the cable segment) 43 indicating the cable length up to the terminal end, and a virtual cable length 44 indicating the length of the cable segment on the drawing file (the length of the cable figure displayed on the screen), The divided cable length 45 indicating the length of the cable segment (segment length) is included.

FIG. 6B shows an example of a cable figure on the drawing file 46. In this example, the Ethernet cable has three cable segments 47a, 47b, 47.
c, the identification code of each segment is "a", "b", "c", and the actual cable length is "l".
1 ”,“ l2 ”,“ l3 ”, virtual cable length is“ v ”
1 ”,“ v2 ”,“ v3 ”, split cable length is“ d ”
1 ”,“ d2 ”,“ d3 ”, and Ethernet name“ Ether1 ”, the above cable segments 47a, 47b, 4
The distance information records of 7c are like 40a, 40b, and 40c shown in FIG. 46 (c).

Here, if the cable segment 47a
Is closest to the network analyzer, l1 = d1, l2 = l1 + d2, l3 = l2 + d3
In a relationship. Note that the two cable segments 47a
And 47b may be integrated to manage the distance information as one cable segment. The distance information record in that case becomes like 40d.

FIG. 7 shows an example of the format of the device layout record 50 stored in the physical layout file 16. The device layout record 50 is an identification code 51 unique to each device graphic in the drawing file managed by the layout file 15.
And a device identification code (device code) 52 indicated by the device figure, and a connection position 53 represented by the distance from the connection position of the device to the network analyzer (Ethernet cable length).

FIG. 8 shows a processing flow of the physical failure position mapping module 25. The physical fault location mapping module 25 uses the cabling file 14 to
The distance information record 40 relating to the Ethernet where the failure has occurred or recovered is sequentially read (step 61), and the distance (cable length) to the failure point reported from the network analyzer and the actual cable length 43 of the distance information record 40 are obtained. By comparison, it is determined whether or not the obstacle location is included in the cable segment of the distance information record (step 62). If it is not included, the process returns to step 61, the next distance information record 40 is read out, and the determination as to whether or not the segment corresponds to the obstacle location is repeated.

When the distance information record of the cable segment corresponding to the fault location is found, the connection position 53 of the device layout record 50 stored in the physical layout file 16 is sequentially checked to find the cable segment portion. It is determined whether or not the device is connected (step 63). If a device is connected to the cable segment where the failure (or recovery) has occurred, calculate the distance (cable length) from the end of the cable segment to the device connection point from the connection position of the device and the actual cable length of the above segment. By calculating, the failure point on the layout display screen 19a is specified (step 6).
4).

When no device is connected to the fault segment, the distance (cable length) to the fault point reported from the network analyzer and the actual cable length and virtual cable length set in the distance information record are recorded. From the divided cable length, the failure point in the cable segment is specified (step 65). In this case, for example, by calculating the difference between the actual cable length and the distance from the network analyzer to the failure point, the distance from the end of the cable segment to the failure point can be known. In addition, the line density of the cable segment figure on the layout display screen 16 is calculated from the virtual cable length and the divided cable length, and this line density is multiplied by the above-mentioned segment internal distance to determine the location of the obstacle on the display screen. You can ask. After executing the above step 64 or 65, the physical failure position display module 26 described later is executed (step 66), and the physical failure position mapping module 2 is executed.
Finish 5

FIG. 9 shows an example of the symbol management record 70 of the fault identification file 18. The symbol management record 70 is
Fault name 71 and symbol information (fault symbol) 72 representing a fault
And a display color 73 of the fault and a display flag 7 for designating whether or not to display on the display device 19 when the fault occurs.
4 is included. When the display flag 74 is "1", the failure is displayed on the display device 19, and when it is "0", it is not displayed.

FIG. 10 shows a processing flow of the physical failure position display module 26. In the physical failure position display module 26, the network analyzer 5, 6, or 7
It is judged whether or not the received data from the data indicates a failure occurrence (or failure recovery) (step 81), and if it indicates a failure occurrence, the failure identification symbol file 18 indicates the failure and the display color. Is obtained (step 82). Next, after displaying the failure display symbol in the specified display color at the display position on the layout display screen 19a obtained by the physical failure position mapping module 25 (step 83), on the failure information display screen 19b, Fault information such as fault name, time of occurrence, and location of fault is output.

If the received data from the network analyzer indicates failure recovery, the failure display displayed at the position determined by the physical failure position mapping module 25 on the layout display screen 19a is canceled (step 85), The fault information of the fault recovered this time is deleted from the fault information displayed on the fault information display screen 19b (step 86). When all the faults are recovered, display the fault information display screen (fault display window) 1
Erase 9b.

FIG. 11 shows a processing flow of the failure history management module 27 which is executed when an instruction to display a failure history is received. In the failure history management module 27, the failure history file 17 stores the occurrence / failure of the failure that has been stored so far.
The fault recovery data is read (step 91), and this data is displayed on the fault history display screen 19c.

FIG. 12 shows a processing flow of the display area changing module 28. In the display area changing module 28,
For the fault selected on the fault information display screen (window) 19b, the cable length from the fault occurrence position to the network analyzer is obtained (step 101), and the distance information record 40 having the actual cable length 43 corresponding to the above cable length is found. Then, the identification code 41 of the cable segment is specified (step 102). Next, it is determined whether or not the graphic of the cable segment having the identification code 41 is currently being displayed on the layout display screen 19a (step 103), and if it is being displayed, this module is terminated. If the graphic is not displayed, edit the layout display screen 19a so that the graphic of the cable segment having the above identification code is located in the center of the layout display screen 19a, and display the network configuration diagram and the failure display mark. Output (step 104).

[0030]

As is apparent from the above description, according to the present invention, since the fault mark is displayed at the corresponding position in the physical network configuration diagram, the operator can display the fault location on the network. It can be easily identified above, and you can quickly go to the point of failure. Further, since the network administrator (or maintenance staff) can greatly reduce the network inspection work time for specifying the location of the failure, it is possible to complete the failure recovery work in a short time.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a network management system to which the present invention is applied.

FIG. 2 is a module configuration diagram of a network management program 22.

FIG. 3 is a diagram showing an example of a layout display screen 19a and a failure information display screen 19b.

FIG. 4 is a diagram showing an example of a fault history display screen 19c.

FIG. 5 is a processing flowchart of the network monitoring module 24.

FIG. 6 is a diagram for explaining the configuration and data content of a distance information record 40.

FIG. 7 is a view showing the arrangement of a device arrangement record 50.

FIG. 8 is a processing flowchart of the physical failure position mapping module 25.

9 is a diagram showing an example of a symbol management record 70. FIG.

FIG. 10 is a processing flowchart of the physical failure position display module 26.

FIG. 11 is a processing flowchart of the fault history management module 27.

FIG. 12 is a processing flowchart of the display area changing module 28.

[Explanation of symbols]

1 ... Network management device, 2-4 ... Ethernet, 5-7
... State detection device (network analyzer), 8 ... File storage device, 9 ... Display device, 10a ... Keyboard, 1
0b ... mouse, 14 ... cable wiring file, 15 ... layout file, 16 ... physical layout file, 17 ... fault history file, 18 ... fault identification file, 19a ... layout display screen, 19b ... fault information display screen, 19c
... fault history display screen, 20 ... central processing unit, 21 ... memory, 22 ... network management program, 23 ... actual screen buffer, 24 ... network monitoring module, 25 ...
Physical failure position mapping module 26 ... Physical failure position display module 27 ... Failure history management module 28 ... Display area change module

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Motohide Kunizai 1-280, Higashi-Kengikubo, Kokubunji-shi, Tokyo Inside the Central Research Laboratory, Hitachi, Ltd.

Claims (12)

[Claims] 1. A data processing device, a display device, and a storage device for storing data records necessary for displaying a physical configuration diagram of the network and failure information on a screen of the display device. The data processing device comprises an input device operated by an operator, the data processing device receives a fault notification from a state detection device connected to a network accommodating a plurality of information devices, and the fault notification information and the operator from the input device. In a network management system adapted to update the display content of the display device in response to an input, the state detection device includes a type of failure that has occurred or recovered in the network and position information that indicates a position where the failure has occurred. A failure notification is issued, and the data processing device determines the failure based on the data record stored in the storage device. The network configuration has means for converting the fault location information indicated by the notification into the location data on the network configuration diagram displayed on the display screen, and the network configuration according to the occurrence or recovery of the fault in the network. A network management system characterized in that a fault mark is displayed or erased at a fault location on the diagram. 2. The storage device stores, as a part of the data record, a distance information record for each cable segment obtained by dividing a network transmission line into a plurality of segments, and each distance information record is a cable segment. Length, including the cable segment position information measured from the connection position of the state detection device on the network transmission path as a starting point, the state detection device, the failure position from the connection point of the state detection device to the failure point A fault notification indicated by the cable length is issued, and the data processing device searches the storage device for a distance information record having cable segment position information corresponding to the fault position indicated by the fault notification, and the distance information record is searched. And the cable length at the fault position, the fault position on the network configuration diagram is determined. Network management system according to claim 1, wherein the door. 3. The cable segment position information included in each of the distance information records indicates a cable length from the connection position of the state detection device to the end position of the cable segment, and the data processing device sets the cable length to The network management system according to claim 2, wherein the fault position on the network configuration diagram is calculated from the difference between the length and the cable length indicated by the status notification and the cable segment length. 4. Each distance information record includes virtual cable length information indicating a length of a transmission path graphic on the network configuration diagram corresponding to each cable segment, and the data processing device includes the difference and the cable segment. 4. The network management system according to claim 3, wherein position data indicating a failure position on the network configuration diagram is calculated from the length and the virtual cable length information. 5. The storage device stores a device arrangement record including information indicating a connection position with a network transmission path for each information device accommodated in the network, and the data processing device includes the failure The network configuration is based on the contents of the distance information record having the cable segment position information corresponding to the fault position indicated by the notification and the contents of the device placement record having the connection position on the cable segment corresponding to the fault position. The network management system according to any one of claims 2 to 4, wherein a failure position on the diagram is specified. 6. The data processing device further comprises means for displaying a list of supplementary information on faults occurring in the network on the screen of the display device in a window different from the network configuration diagram. The network management system according to any one of claims 1 to 5, wherein 7. The data processing device, in response to an input operation for designating any trouble display in the supplementary information display window made from the input device, displays a corresponding trouble mark on the display device. 7. The network management system according to claim 6, further comprising means for changing the display of the network configuration diagram so that it is displayed within a predetermined range. 8. The data processing device stores history information of a fault occurring in the network in the storage device, and displays the history information on a display screen in response to a fault history display request from the input device. The network management system according to any one of claims 1 to 7, wherein a list is displayed. 9. A fault location display method in a network management device for displaying a location of a fault occurring in a network on a physical configuration diagram of the network displayed on a display screen, the fault location display method being in a state of being connected to the network. The detection device generates a fault notification including the type of fault that has occurred in the network and position information that indicates the position where the fault has occurred, and the network management device uses the fault position information that is indicated in the fault notification to the network. Converted to position data on the configuration diagram,
A fault position display method characterized in that a fault mark is displayed at a fault corresponding position on the network configuration diagram. 10. The network management device uses, as a starting point, a cable segment length and a connection position of the status detection device on the network transmission line for each cable segment obtained by dividing the transmission line of the network into a plurality of parts in advance. A distance information record including measured cable segment position information is stored, and the state detection device issues a fault notification indicating a fault position by a cable length from a connection point of the state detection device to a fault point. The network detection device searches for a distance information record having cable segment position information corresponding to the fault position indicated by the fault notification, and based on the content of the distance information record and the cable length at the fault position, The fault position according to claim 9, wherein the fault position on the network configuration diagram is determined. How to Display. 11. The network management device stores, as the cable segment position information included in each of the distance information records, a cable length from a connection position of the status detection device to a measured end position of the cable segment. , The position of the fault on the figure of the corresponding cable segment in the network configuration diagram based on the cable segment length in the distance information record corresponding to the fault position and the difference between the cable length and the cable length indicated in the status notification. 3. The method according to claim 1, wherein
The fault position display method described in 0. 12. The network management device stores virtual cable length information indicating a length of a transmission path graphic on the network configuration diagram corresponding to each cable segment in each of the distance information records. The fault position display method according to claim 11, wherein a fault occurrence position on the network configuration diagram is calculated from a cable segment length and the virtual cable length information.