JPH08223159A - Network management system and management method therefor - Google Patents

Abstract

PURPOSE: To gather information relating to a fault detected in a node by gathering internal information requested to a network node based on stored read-out information and storing it in piles. CONSTITUTION: When the controller 26 of an NMS server 22 is informed of an outline message for indicating the generation of the fault from the network node 12a, an automatic gathering command and gathering rules stored in a storage device 32 are read out to the controller 26. The internal information of the node 12a corresponding to the outline of the generated fault in the outline message is judged and a request for reading out the internal information from the node 12a is sent out to the node 12a. Then, the node 12a sends the corresponding internal information to the controller 26 as an internal information read-out response to the request. The request and the response are repeatedly executed until required information is gathered and the internal information inputted to the controller 26 in such a manner is successively stored in the storage device 32.

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 for monitoring a failure that occurs in a data communication network, and more particularly to a network management system that collects information regarding the failure that has occurred.

[0002]

2. Description of the Related Art As a network node of an intermediate node in a data communication network such as a terminal device, a switching device and a transmission device, for example, a plurality of network nodes are used.
Exchanges such as frame relay exchanges that connect LANs to each other are known.

When such a network node detects a failure in the frame relay network of the data communication network, the network node autonomously detects the occurrence of the failure in the network management system (Network Management System).
stem) was notified. In the network management system, maintenance personnel manually read the internal information of the network node based on the fault occurrence information notified from the network node, and analyze the detailed content of the fault that occurred in the frame relay network. Was.

[0004]

However, in the conventional network management system, the failure content generated by receiving the notification of the failure occurrence from the network node and then reading the detailed content of the failure from the network node by the maintenance person. Since the cause and the like are analyzed, the detailed information about the fault stored in the network node may disappear before the detailed content of the fault is read. This is also related to the fact that the network node has the function of self-recovering a failure that has occurred, and after the maintenance personnel have responded to themselves, the detailed content of the failure will disappear. I couldn't read it because it happened. As a result, it was not possible to collect the information necessary for analyzing the generated fault from the network node. Therefore, if the response is delayed, it is not possible to collect detailed contents regarding the occurred failure, so that the failure cannot be analyzed in detail, and countermeasures for the failure cannot be taken.

Further, since the detailed contents of the fault are collected from the network node by the manual operation of the maintenance person,
It may not be possible to collect all the necessary fault information depending on the skill level of the person in charge of maintenance, or it may not be possible due to misunderstandings, and the necessary information in the network node will be erased. There was a possibility.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a network management system capable of collecting information on a failure detected in a network node.

[0007]

In order to solve the above-mentioned problems, the present invention accommodates lines constituting a network,
Transmission switching means for transmitting the information appearing on this line to a desired destination, detection means for detecting a fault occurring in this network and outputting summary information showing the outline of this fault, and the status of the transmission / switching means. In a network management system for managing a network connected by a network node having a holding means for temporarily holding internal information that represents, this system is read information corresponding to the outline information detected by the detecting means. Storage means for storing read information for reading the internal information, and control means connected to the network node for collecting the internal information held in the holding means based on the outline information detected by the detecting means. The control means receives the summary information from the network node, and based on the read information stored in the storage means, the summary information is stored in the storage means. A request for collecting a network node internal information corresponding to the information sent to the network node, characterized in that to accumulate internal information collected from the network node to the storage means by this request.

In this case, the control means determines the read information corresponding to the summary information based on the summary information input to the input means and the summary information output from the detection means. Read request means for sending a read request for reading the internal information of the network node to the network node according to the read information determined by the determining means; and storing means for storing the internal information read from the network node by the read request means. It is preferable to have a writing means for storing the data in the.

In this case, further, the storage means stores the read information representing the read command for reading the internal information corresponding to each of the outline information, and the determination means stores the read information based on the read information stored in the storage means. The read information corresponding to the outline information input to the input unit may be determined.

Further, the accumulating means accumulates a first collection rule representing a rule for reading the internal information corresponding to each of the outline information, and the judging means composes the first collection rule accumulated in the accumulating means. Based on this, the read information corresponding to the outline information input to the input means may be determined.

In this case, this system has operation means for notifying the control means of the operation information from the operator and displaying the information from this control means, and the control means follows the operation information from the operation means. The first collection rule may be stored in the storage means.

Further, the storage means stores a second collection rule representing a rule for collecting other internal information related to the internal information, and the input means monitors the internal information output from the detection means. However, the determining means may determine the read information corresponding to other internal information related to the internal information input to the input means, based on the second collection rule accumulated in the accumulating means.

In this case, this system has operation means for notifying the control means of operation information from the operator and displaying the information from this control means, and the control means follows the operation information from the operation means. The second collection rule may be stored in the storage means.

Further, this system has an operation means for notifying the control means of the operation information from the operator and displaying the information from the control means, and the control means is based on the operation information from the operation means. It is preferable that the reading means has a reading means for reading the internal information accumulated in the accumulating means, and the operating means displays the content represented by the internal information read by the reading means.

The storage means has first storage means for storing the read information and second storage means for storing the outline information and the internal information collected from the network node, and the control means is the outline. Information and internal information may be stored in the second storage means. Further, in order to solve the above-mentioned problems, the present invention provides a network management method in a network management system for managing networks connected by network nodes, wherein the network management system includes summary information detected by the network nodes. Based on the outline information detected by this network node, which is the associated read information, the storage means for accumulating the read information for reading the internal information representing the state of this network node, and the summary information detected by this network node. , And a control means for collecting internal information, and when the control means receives the outline information sent from the network node, this method reads out the read information accumulated in the accumulating means and corresponds to the read information read out. To collect the internal information of the network node Was sent to the network node, the response from the network node in response to the request, collects the internal information of the network node, characterized in that to accumulate the collected internal information in the storage means.

In this case, the control means inputs the summary information sent from the network node, determines the read information corresponding to this summary information, and issues a read request for reading the internal information of the network node according to the determined read information. Send to this network node.

In this case, further, the storage means stores the read information representing the read command for reading the internal information corresponding to the summary information, and the control means corresponds to the summary information sent from the network node. The read information may be determined based on the read information stored in the storage means, and a read request for reading the internal information of the network node may be sent to the network node according to the determined read information.

In this case, the network management system is
The control means is notified of the operation information from the operator and has the operation means for displaying the information from the control means.
According to the operation information, the read information representing the read command may be stored in the storage means.

Further, the storage means stores a first collection rule representing a rule for reading the internal information corresponding to each of the summary information, and the control means stores the first collection rule stored in the storage means. Based on this, it is preferable to determine the read information corresponding to the input summary information.

In this case, the network management system is
The control means is notified of the operation information from the operator and has the operation means for displaying the information from the control means.
The first collection rule may be stored in the storage unit according to the operation information.

Further, the storage means stores a second collection rule representing a rule for collecting other internal information related to the internal information, and the control means monitors the internal information sent from the network node. Then, based on the internal information collected from the network node, read information corresponding to other internal information related to this internal information may be determined based on the second collection rule stored in the storage means.

In this case, the network management system is
The control means is notified of the operation information from the operator and has the operation means for displaying the information from the control means.
The second collection rule may be accumulated in the accumulating unit according to the operation information.

Further, the network management system has operation means for notifying the control means of the operation information from the operator and displaying the information from the control means, and the control means stores the information in the storage means based on the operation information. It is preferable to read the stored outline information and internal information, and display the contents represented by the read outline information and internal information on the operating means.

[0024]

According to the present invention, the control means collects the outline information on the fault detected by the network node, and the internal information of the network node corresponding to this outline information is used as the read information accumulated in the accumulating means. Based on this, a request for reading is sent from the control means. Based on the response from the network node, the control means causes the storage means to store the internal information collected in this response.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a network management system according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 2, there is shown an outline of a network to which the network management system of the present invention is connected. In this embodiment, this network includes network nodes (NN) 12a, 12b and 12c that house and connect each transmission line 10 in its line package 11.
A frame relay network 14 of a wide area communication network is configured. This network node 12 connects local area networks (LAN) 16 and 18 such as Ethernet, and transmits information from the LAN to a device connected to another network node 12 by frame relay in a variable length frame format. It is a node having a switching device (not shown) for switching. The network node 12 in this embodiment is composed of a frame relay switch,
12a is via a transmission line 10 composed of an optical fiber,
For example, the information sent from the housed LAN 16 is exchanged with a desired destination by a switching device and transmitted to the LAN 18 connected to another network node 12c, for example.

A network management system (NMS) 20 for performing network management and management in the frame relay network 14 is connected to the network node 12a via a LAN 16, and the network management system 20 monitors the frame relay network 14. In particular, it is a fault management system that collects information necessary for detailed analysis of faults such as line faults, transmission data faults, hardware faults, and software faults detected at network nodes. In this embodiment, the network management system (NMS) 20
LAN16 means Ethernet and TCP / as communication media.
Although they are connected by the IP protocol, the present invention is not limited to this, and they may be connected by a communication medium and a protocol of another system.

The network management system 20 will be described with reference to the block diagram shown in FIG. In the following description, parts that are not directly related to the present invention will be omitted from illustration and description.

As shown in the figure, the network management system 20 has an NMS server 22 and an NMS console 24, which are respectively LA and LA.
It is connected to N16. Network management system 20
In response to the notification of the occurrence of a fault in the switching device (not shown) and the outline of the fault detected by the network node 12, the internal information of the network node 12 is collected in a predetermined procedure. The network node 12 is provided with a storage circuit such as a memory or a register that temporarily holds internal information indicating the state of the network node 12. In the present embodiment, the internal information is transmitted from the network management system 20 when a failure occurs. Is read out and sent to the network management system 20.
The notification of the internal information may be read from the network management system 20 not only when a failure occurs but also in any state, for example.

The NMS server 22 is a computer device that manages the network configuration of the frame relay network 14 connected by the respective network nodes 12, the fault that has occurred, the line state, and the like. The NMS server 22 is a control unit (CPU) 26 as a processing unit for managing the network.
And a storage device 32 including fixed disks 28 and 30, and monitors a fault occurring in the network node 12 (a, b, c) via the LAN 16, for example.

The control device 26 is a device that collects, from the network node 12a, information necessary for detailed analysis of the details of the failure, based on a summary message indicating the summary of the failure detected by the network node 12a. .

This summary message is, for example, as shown in FIG. 4, a message number for notifying a fault detected in the network node 12, the date and time when the fault occurred, and
The name of the device that detected the failure and the severity of the failure (A, B, C, D)
And an outline (a, b,
c, d) and. The control device 26 stores the summary message notified from these network nodes 12a in the fixed disk 30 of the storage device 32 connected via the connection line 33.

The fixed disks 28 and 30 of the storage device 22 are
An information storage medium that stores information transferred from the control device 26. In particular, as shown in FIG. 5, for example, in the fixed disk 28 connected to the control device 26 via the connection line 34,
An automatic input command representing an instruction for automatically reading internal information in the network node is stored. The automatic closing command corresponds to the outline of the failure notified from the network node 12a.

This automatic input command sends a plurality of instructions 1 (a) to 5 (a) corresponding to the fault to the network node 12 when the outline of the fault notified to the control unit 26 is a, for example.
Is read information composed of a character string representing an instruction to read internal information corresponding to each of the instructions 1 (a) to 5 (a) from the network node by being sent to the network node. The controller 26 reads from the fixed disk 28 the instructions corresponding to the fault outlines a to d of the summary messages notified from the network node, and reads the internal information of the network node 12a corresponding to each of these commands. The internal information read request is sequentially sent to the network node 12a.
Similarly, in the case of outlines b, c, and d, the corresponding instruction 1
(b) to 5 (b), ..., Instructions 1 (d) to 5 (d) are stored in the fixed disk 28.

Further, the fixed disk 28 stores table information indicating a collection rule which defines which information of the internal information of the network node 12a is read out.
This table information is, for example, as shown in FIG. 6, a collection rule (1) that defines which internal information should be read according to each of the fault outlines a to e in the summary message notified from the network node 12a. is there.

As shown in the figure, this collection rule (1) is
For example, when the outline a of the failure is detected by the network node 12a and notified to the control device 26, the telephone number, the line speed, the content of the control packet, the operation history stored in the memory or the register in the network node 12 are recorded. And read information representing rules for reading a plurality of internal information such as memory contents from the network node 12a. The control device 26 reads from the network node 12a internal information matching the collection rule (1) according to the outline of the failure notified from the network node 12a.

Further, in the fixed disk 28, according to the internal information collected from the network node 12a, a collection rule for collecting other internal information related to this internal information.
(2) is accumulated. This collection rule (2) is, for example, as shown in FIG. 7, a rule for reading, when a telephone number is collected from the network node 12a, related information 1 to 5 of internal information related to this, from the network node 12a. Is read information. The control device 26 reads from the network node 12a other internal information that matches the collection rule (2) according to the internal information notified from the network node 12a.

As described above, in this embodiment, the control device 26 is
First, the internal information of the network node 12a is collected based on the automatic collection command and the collection rule (1) according to the outline of the failure notified from the network node 12a, and then the collection rule corresponding to the collected internal information. (1)
It is configured to collect other internal information defined by. However, the present invention is not limited to this, for example,
The internal information of the network node 12 may be read using either the automatic collection command or the collection rule.

The control device 26 sends an internal information read request for reading the internal information of the network node 12 to the network node 12a, receives the internal information read response output from the network node 12a in response thereto, and receives this response. In the fixed disk 30 of the storage device 22, the internal information notified in step 1, the automatic collection command used to collect this internal information, and the collection rule are accumulated. The control device 26 has a fixed disk 30.
Based on the request from the NMS console 24 connected to LAN16, the summary message and internal information stored in
It can be sent to the console 24 to have its contents displayed and printed.

The NMS console 24 includes a display device 36 for displaying information indicating the contents of the network management function in the system 20 based on a predetermined operation, and an input device 38 for inputting operation information according to the operation of a maintenance person. , A computer device such as a workstation configured by a processing device 40 connected to the LAN 16 and accessing the NMS server 22 according to operation information. The NMS console 24 displays information on the occurrence of a fault in the network node 12 on its display device 36.
It has a function to display it on the screen and notify the maintenance person.
It has a function of reading out information about a failure accumulated in the fixed disk 30 of the NMS server 22 and displaying it on the display device 36. Further, the NMS console 24 sends the automatic input command and the collection rule according to the operation information input from the input device 38 to the NMS server 22, causes the control device 26 to store these in the fixed disk 28, and sets them in the NMS server 22. You can then register.

Here, the functional configuration of the control device 26 will be described with reference to the block diagram shown in FIG.
The input processing unit 300, the failure summary detection processing unit 302, the first determination processing unit 304, the internal information detection processing unit 306, the second determination processing unit 308, the read request processing unit 310, and the output processing unit 312.
A read processing unit 314 and a write processing unit 316.

The input processing unit 300 is a processing unit that monitors information input via the LAN 16 and notifies each unit of the NMS server 22 of the input information. For details, input processing unit 300
Inputs the outline message notified from the network node 12 and the internal information notified in the internal information read response from the network node 12, notifies the former to the failure outline detection processing unit 302, and the latter to internal information detection processing. It has a function of notifying the unit 306.

The input processing unit 300 is also an NMS console.
Based on the operation information notified from 24, an instruction for reading the corresponding automatic collection command and collection rule from the fixed disk 28 is notified to the read command detection processing unit 318 described later. Further, based on the operation information notified via the LAN 16, the input processing unit 300 notifies the write processing unit 316 of an instruction to write the automatic collection command and the collection rule corresponding to the operation information to the fixed disk 28. , Update the automatic collection command and collection rule stored in the storage device 32. In addition, the input processing unit 300 permits the output processing unit 312, which will be described later, to send the next internal information read request, which is output from the output processing unit 312, particularly each time internal information is input from the network node 12. It has a function.

The fault summary detection processing unit 302 is composed of the input processing unit 30.
It is a processing unit that detects the first information indicating the outline of the failure from the outline message input to 0. The fault summary detection processing unit 302 sends the detected first information to the first determination processing unit 304.

The first determination processing unit 304 is a processing unit that determines which information is read from the network node 12 based on the first information detected by the failure outline detection processing unit 302.

Specifically, the first determination processing unit 304 receives the notification of the first information from the failure outline detection processing unit 302, and sends the automatic insertion command (FIG. 5) corresponding to this first information to the storage device 32. Generate a read instruction to read from the fixed disk 28,
Further, a read instruction for reading the collection rule (FIG. 6) stored in the fixed disk 28 corresponding to the first information is generated. The first determination processing unit 304 sends the generated read instruction to the read processing unit 314 described later. After that, the first determination processing unit 304
The read request processing unit 310 determines a read instruction for determining the information corresponding to the automatic insertion command and the collection rule read by the read processing unit 314 and reading the internal information according to the determination result.
To notify. The first determination processing unit 304 in this embodiment is
A read instruction is generated in each of the first step of collecting internal information based on the automatic collection command and the second step of collecting internal information based on the collection rule (1).

The first judgment processing unit 304 further includes a summary message including the first information detected by the fault summary detection processing unit 302, an automatic submission command and a collection rule (1) corresponding to the first information. ) Is written to the fixed disk 30 and the writing processing unit 316 is notified of the writing.

The internal information detection processing unit 306 is a processing unit for detecting the second information representing the internal information of the network node 12 read from the network node 12. The internal information detection processing unit 306 sends the detected second information to the second determination processing unit.

The second determination processing unit 308 is a processing unit that determines the type of internal information read from the network node 12 based on the second information detected by the internal information detection processing unit 306. Specifically, when the second information is detected by the internal information detection processing unit 306, the second determination processing unit 308 in this embodiment reads out the collection rule (2) corresponding to the second information. The read instruction is notified to the read processing unit 314.
The second determination processing unit 308 uses the internal information detection processing unit based on the collection rule (2) (FIG. 7) notified from the reading processing unit 314.
At 306, other internal information related to the second information detected is determined, and if there is this other internal information, it is further read from the network node 12. The second determination processing unit 308 notifies the read request processing unit 310 of a read instruction for reading the internal information according to the determination result. Further, the second determination processing unit 308
Notifies the write processing unit 316 to store the internal information read from the network node 12a by the read instruction and input to the input processing unit 300 in the fixed disk 30.

The read request processing unit 310 includes a first determination processing unit 3
This is a processing unit that generates an internal information read request for reading internal information from the network node 12 according to the determination result of 04 and the second determination processing unit 308. The read request processing unit 310 generates an internal information read request for reading from the network node 12 the information according to the notified read instruction. The read request processing unit 310 notifies the output processing unit 312 of the plurality of generated internal information read requests.

The output processing section 312 is a processing section for outputting the information from the NMS server 22 to another device connected to the LAN 16. Specifically, the output processing unit 312 includes the read request processing unit 310.
The internal information read request notified from is output to the network node 12 via the LAN 16. Also, the output processing unit 312
Is the LA information from the second read processing unit 320, which will be described later.
Send to NMS console 24 via N16. Output processing unit
312 outputs the next internal information read request to the network node 12 each time the permission from the input processing unit 300 is received.

The read processing unit 314 is a processing unit for reading the information corresponding to the read instruction notified from the first determination processing unit 304 and the second determination processing unit 308 from the fixed disk 28 of the storage device 32. The read processing unit 314 has an automatic input command corresponding to the read instruction notified from the first determination processing unit 304.
The collection rule (1) is read from the fixed disk 28, and the read information is notified to the first determination processing unit. Further, the read processing unit 314 notifies the second determination processing unit 308 of the collection rule (2) corresponding to the read instruction notified from the second determination processing unit 308.

If the read instruction notified from the first determination processing unit 304 indicates that the automatic instruction command corresponding to the outline a of the failure shown in FIG. 5 is to be read, the read processing unit 314 outputs the instruction 1 (a). ) -5 (a) are read from the fixed disk 28. Further, in this case, the read processing unit 314 reads from the fixed disk 28 the collection rule (1) for reading internal information such as the telephone number, the line speed and the control packet corresponding to the outline a as shown in FIG. Further, when the reading instruction notified from the second determination processing unit 308 indicates that other internal information related to the telephone number is read, the reading processing unit 314 outputs the related information 1 to 5 corresponding to the telephone number. (FIG. 7) is read from the fixed disk 28, and the read collection rule (2) is notified to the second determination processing unit 308.

The writing processing unit 316 stores the information notified from the first determination processing unit 304 and the second determination processing unit 308 in the storage device.
This is a processing unit for writing data on 32 fixed disks 30. The write processing unit 316 includes a first determination processing unit 304 and a second determination processing unit 30.
An overview message containing the first information sent from 8 and
The internal information of the second information is written in a predetermined storage area of the fixed disk 30, and the automatic input command and the collection rule (1, 2) used for collecting the information are written in the storage area. Furthermore, the write processing unit 316
By writing the automatic input command and the collection rule (1, 2) notified from the S console 24 to the input processing unit 312 in the fixed disk 28, these information can be set and updated according to the operation information.

Further, the control unit 26 includes a read instruction detection processing unit 31.
8 and the second read processing unit 320, and the network node based on the operation information notified from the NMS console 24.
It has a function of reading the first information and the second information collected from 12 from the storage device 32 and outputting them to the NMS console 24. Specifically, the read instruction detection processing unit 318
The operation information input to the input means 300 is detected, and an instruction for reading the information corresponding to this operation information from the fixed disks 28 and 30 is notified to the second reading processing section. In this case, the read instruction detection processing unit 318 determines whether the desired first collected
And, when the operation information for reading the second information is detected, a reading instruction for reading the information is notified to the second reading processing unit. Further, when the read command detection processing unit 318 detects the operation information for reading the automatic collection command or the collection rule stored in the fixed disk 28, the read command detection processing unit 318 notifies the second read processing unit of an instruction to read the information matching the operation information. To do.

The second read processing unit 320 is a processing unit that reads corresponding information from the fixed disks 28 and 30 of the storage device 32 based on the instruction information notified from the read command detection processing unit 318. The second read processing unit 320 uses the read first
Information such as the second information is notified to the output processing unit 312, and the NMS console is output from the output processing unit 312 via the LAN16.
Transfer to 24.

The operation of the network management system having the above configuration will be described below with reference to FIG.

In the operating state, a failure that has occurred in the frame relay network 14 is, for example, the network node 12a.
When detected by, the control device 26 of the network management system 20 is notified of the outline message including the outline of the failure via the LAN 16.

The notified summary message is sent to the controller 26.
The first information representing the outline of the failure in the summary message that is input to the input processing unit 300 of the
The first determination processing unit 304 is notified of this first information. Based on this first information, the automatic collection command and collection rule (1) read from the fixed disk 28 of the storage device 32 are judged by the first judgment processing unit 304, and the judged automatic collection command and collection rule (1) A read instruction for reading and is sent to the read processing unit 314. These commands and the collection rule (1) are read from the fixed disk 28 by the read control of the read processing unit 314 and notified to the first determination processing unit 304. On the other hand, the first information notified to the first determination processing unit 304 is sent to the writing processing unit 316 and accumulated in a predetermined storage area of the storage device 30.

Thus, for example, at the beginning of the first stage,
A read instruction for reading from the network node 12a the internal information designated by, for example, the instruction 1 (a) (FIG. 5) of the automatic collection command that matches the first information indicating the outline of the failure is the first determination processing unit 304. From the read request processing unit 310. Further, the read instructions for reading the internal information corresponding to the subsequent instructions 2, 3, 4, 5 are the internal information corresponding to the previous instruction, for example, the instruction 1 (a). Second determination processing unit detected by 306
When input to 308, the read request processing unit 310 is notified.

In response to this read instruction, an internal information read request is sent from read request detection processing unit 306 and output processing unit 312.
Is input to the network node 12a via the LAN16.

In the network node 12a, the output processing unit
Based on the internal information read request sent from 312, internal information corresponding to the request is read from an internal circuit such as the storage circuit and output to the input processing unit 300 as a response to the internal information read request. In this internal information read response, the internal information corresponding to command 1 (a) is input processing unit 300.
This internal information is input to the internal information detection processing unit.
It is detected at 306 and notified to the second determination processing unit 308.

The internal information notified to the second determination processing unit 308 is sent to the writing processing unit 316 and stored in a predetermined storage area of the fixed disk 30 under the writing control of the writing processing unit 316.

In this way, the first determination processing unit 302
In order to collect the internal information corresponding to the subsequent commands 2 to 5, a read instruction for reading each is sequentially generated and sent to the read request processing unit 310. As a result, a summary
The internal information specified by the instructions 1 to 5 of the automatic collection command corresponding to (a) should be read internally by repeating the internal information read request according to the instruction and the internal information read response according to the request. All information is collected from the network node 12a and stored in a predetermined storage area of the fixed disk 30.

Further, the first judgment processing unit 304 can collect the internal information in the network node 12a based on the collection rule (1) read from the fixed disk 28. For example, the first information representing the outline a is the first
When the determination processing unit 304 is notified, the read request processing unit 310 is notified of the read instruction for collecting the internal information that matches the collection rule (1) shown in FIG. 6, and the internal information corresponding to this instruction is read. The read request is sent from the output processing unit 312 to the network node 12a. As a result, in response to this request,
For example, the telephone number is output from the network node 12a and input to the input processing unit 300. Similarly, internal information of the network node 12a, such as line speed, control packet, operation history, and memory contents, is similarly generated, and internal information read requests for reading these are generated. Output from node 12a.

The second information output from the network node 12a is input to the input processing unit 300. The second information collected by this collection rule (1) is sent to the write processing unit 316 and accumulated in a predetermined storage area of the fixed disk 30 in the same manner as in the case of the automatic collection command.

In the second judgment processing unit 308, based on the internal information of the second information thus collected from the network node 12a, other internal information related to this internal information is read out. It is determined based on the collection rule (2) (FIG. 7) notified from the unit 314. In this case, which internal information is referred to by referring to the first information indicating the outline of the failure notified to the first determination processing unit 304 and the second information notified to the second determination processing unit 308 so far. Can be read from the network node 12a.

When other internal information is read out according to these determination results, a read instruction for reading it is generated by the second determination processing unit 308 and sent to the read request processing unit 310. By the response of the network node 12a to the internal information read request generated by the read request processing unit 310,
The internal information of the network node 12a is further input processing unit.
The internal information is input to 300, and this internal information is finally accumulated in a predetermined storage area of the fixed disk 30 by the write processing unit 316.

The summary message including the first information indicating the summary of the failure accumulated in the storage device 32 in this way, and the internal information of the network node 12a collected by the automatic collection command and the collection rule (1, 2) Can be read by operating information for the NMS console 24.

Specifically, the input device of the NMS console 24
The operation information input to 38 is input to the input processing unit 300 of the control device 26 via the LAN 16 under the control of the processing device 40. When this operation information is input to the input processing unit 300, an instruction for reading information corresponding to the operation information from the storage device 32 is generated.

This instruction is detected by the read instruction detection processing unit 318, and according to the detected instruction information, information such as a summary message and internal information corresponding to the operation information is transferred from the fixed disk 30 to the second read processing unit 320. Read out. The read information is sent to the output processing unit 312, and is sent from the output processing unit 312 to the processing device 40 of the NMS console 24. As a result, the content represented by the information output from the NMS server 22 is displayed on the display device 36 of the NMS console 24, for example.

As described above, in this embodiment, when the summary message is notified from the network node 12, immediately after it is notified.
Based on the summary message, the NMS server 22 refers to a pre-registered automatic collection command and a collection rule that defines the internal information to be collected, and generates a request to collect the necessary internal information of the network node 12. The generated request is sent to the network node, and the network node sends its internal information to the NMS server 22 as a response to the request.

As a result, immediately after the occurrence of a failure, detailed information about the failure can be automatically and immediately collected from the network node 12, so that, for example,
Before the detailed information disappears from the network node, all desired internal information is collected.

Therefore, it is not necessary to manually collect detailed information about the failure at the moment when the failure occurs, and the delay in the response of the maintenance person does not pose a problem. Moreover, since all necessary information is collected without fail, sufficient detailed information is provided when taking countermeasures in the network according to the failure that has occurred.

The information automatically collected in this way is stored in the storage device 32, and the maintenance staff reads the stored information by operating the NMS console and displays the contents represented by the information. Can be displayed.
Therefore, even after the failure occurring in the frame relay network 14 has been self-recovered, detailed information in the frame relay exchange can be grasped, and therefore, for example, an appropriate solution to the failure caused by the hardware side and the software side can be appropriately set. It is possible to take it.

In the present embodiment, the network management system 20 has one system arranged for the frame relay network 14, but the present invention is not limited to this, and the network management system is arranged in any network node 12. ,
The network configured by the frame relay network 14 may be configured to be managed by a plurality of network management systems. In this case, it is possible to transfer the information on the failure collected from the network node and accumulated in the storage device 32 to another network management system to back up this information, and to analyze the generated failure for different failures. .

[0077]

As described above, according to the present invention, when the control means receives the outline information about the fault detected in the network node, the storage means issues a request for reading the internal information of the network node corresponding to the outline information. It is sent from the control means based on the read information stored in the. Based on the response from the network node to this request, the control means can cause the storage means to store the internal information regarding the failure collected in this response.

Therefore, it is possible to collect the internal information necessary for analyzing the occurred fault and accumulate it in the accumulating means before the detailed contents concerning the fault disappear from the network node. As a result, the details of the failure can be analyzed in detail based on the collected internal information, and, for example, countermeasures for the failure can be taken based on sufficient information. In this way, since the detailed contents of the necessary fault are collected and accumulated in the accumulating means immediately after the occurrence of the fault, the necessary information can be read from the accumulating means at any time and all of them can be confirmed. .

[Brief description of drawings]

FIG. 1 is a block diagram showing a network management system to which the present invention is applied.

FIG. 2 is a diagram showing an outline of a network composed of the network nodes shown in FIG.

3 is a block diagram showing a functional configuration of a control device shown in FIG.

FIG. 4 is a diagram showing an example of a summary message transmitted from a network node.

5 is a diagram showing an example of an automatic input command stored in the storage device shown in FIG.

FIG. 6 is a collection rule (1) accumulated in the storage device shown in FIG.
It is a figure showing an example of.

FIG. 7: Collection rules (2) accumulated in the storage device shown in FIG.
It is a figure showing an example of.

8 is a diagram showing an example of a communication procedure in the network management system shown in FIG.

[Explanation of symbols]

 10 Transmission line 12 Network node 14 Frame relay network 16 Local area network (LAN) 20 Network management system 22 NMS server 24 NMS console 26 Controller 32 Storage device

Claims (20)

[Claims] 1. A line for accommodating a network is accommodated,
Transmission and switching means for transmitting information appearing on the line to a desired destination, detecting means for detecting a fault occurring in the network and outputting summary information indicating the outline of the fault, and status of the transmission and switching means. In a network management system for managing a network connected by a network node having a holding unit for temporarily holding internal information indicating the read information corresponding to the outline information detected by the detecting unit. And storage means for storing read information for reading the internal information, and internal information held by the holding means based on the outline information detected by the detecting means, which is connected to the network node. And a control means for collecting the information, the control means receiving the summary information from the network node, and reading the information stored in the storage means. A request for collecting internal information corresponding to the outline information from the network node based on the information is sent to the network node, and the internal information collected from the network node by the request is accumulated in the accumulating unit. A network management system characterized in that 2. The network management system according to claim 1, wherein the control unit is based on an input unit that monitors the outline information output from the detection unit, and based on the outline information input to the input unit, Determining means for determining read information corresponding to the summary information, read request means for sending to the network node a read request for reading the internal information of the network node according to the read information determined by the determining means, and the read A network management system comprising: a writing unit that stores the internal information read from the network node by the request unit in the storage unit. 3. The network management system according to claim 2, wherein the storage unit stores read information representing a read command for reading internal information corresponding to each of the outline information, and the determination unit includes: A network management system, wherein read information corresponding to the outline information input to the input means is determined based on the read information stored in the storage means. 4. The network management system according to claim 2, wherein the accumulating unit accumulates a first collection rule representing a rule for reading internal information corresponding to each of the outline information, and the determining unit. The network management system is characterized in that read information corresponding to the outline information input to the input unit is determined based on the first collection rule stored in the storage unit. 5. The network management system according to claim 4, wherein the system has operation means for notifying the control means of operation information from an operator and displaying the information from the control means. The network management system, wherein the control means stores the first collection rule in the storage means according to the operation information from the operation means. 6. The network management system according to claim 2, wherein the storage unit stores a second collection rule representing a rule for collecting other internal information related to the internal information, The input means monitors the internal information output from the detection means, and the determination means relates to the internal information input to the input means based on the second collection rule stored in the storage means. A network management system characterized by determining read information corresponding to other internal information. 7. The network management system according to claim 6, wherein the system has operation means for notifying the control means of operation information from an operator and displaying the information from the control means. The network management system, wherein the control means stores the second collection rule in the storage means according to the operation information from the operation means. 8. The network management system according to claim 1, wherein the system has operation means for notifying the control means of operation information from an operator and displaying the information from the control means, The control means has a reading means for reading the internal information accumulated in the accumulating means based on the operation information from the operating means, and the operating means represents the internal information read by the reading means. A network management system characterized by displaying contents. 9. The network management system according to claim 1, wherein the storage unit stores a first storage unit for storing the read information, and a first storage unit for storing outline information and internal information collected from the network node. 2. A network management system, comprising: two storage means, wherein the control means stores the summary information and internal information in a second storage means. 10. The network management system according to claim 1, wherein the network node is an exchange that transfers information from a terminal device connected to the accommodated line to a desired destination. system. 11. The network management system according to claim 10, wherein the exchange transfers the information from the terminal device to a desired destination in a frame format. 12. A network management method in a network management system for managing a network connected by a network node, wherein the network management system is read information corresponding to summary information detected by the network node. A storage unit for storing read information for reading internal information indicating the state of the network node; and collecting the internal information based on the outline information detected by the network node, which is connected to the network node. The control means, when the control means receives the outline information sent from the network node, reads the read information accumulated in the accumulating means, and the network corresponding to the read information read out. A request to collect internal information about the node is sent to the network. A network management method, which transmits to a work node, collects internal information of the network node according to a response from the network node in response to the request, and stores the collected internal information in the storage means. . 13. The network management method according to claim 12, wherein the control unit inputs the summary information sent from the network node, determines read information corresponding to the summary information, and determines the determined read. A network management method, wherein a read request for reading internal information of the network node according to information is sent to the network node. 14. The network management method according to claim 13, wherein the storage unit stores read information representing a read command for reading internal information corresponding to each of the outline information, and the control unit includes: Read information corresponding to the outline information sent from the network node is determined based on the read information stored in the storage means, and a read request for reading internal information of the network node according to the determined read information is issued to the network. A network management method characterized by transmitting to a node. 15. The network management method according to claim 14, wherein the network management system has operation means for notifying the control means of operation information from an operator and displaying the information from the control means. The control means causes the storage means to store the read information representing the read command in accordance with the operation information. 16. The network management method according to claim 13, wherein the storage unit stores a first collection rule representing a rule for reading internal information corresponding to each of the outline information, and the control unit. The network management method is characterized in that read information corresponding to the input summary information is determined based on the first collection rule stored in the storage means. 17. The network management method according to claim 16, wherein the network management system has operation means for notifying the control means of operation information from an operator and displaying the information from the control means. The control means causes the storage means to store the first collection rule in accordance with the operation information. 18. The network management method according to claim 13, wherein the storage unit stores a second collection rule representing a rule for collecting other internal information related to the internal information, The control means monitors the internal information sent from the network node, and based on the internal information collected from the network node, the read information corresponding to other internal information related to the internal information, the storage means. A network management method characterized by making a determination based on a second collection rule accumulated in the above. 19. The network management method according to claim 18, wherein the network management system has operation means for notifying the control means of operation information from an operator and displaying the information from the control means. The control means causes the storage means to store the second collection rule in accordance with the operation information. 20. The network management method according to claim 12, wherein the network management system has operation means for notifying the control means of operation information from an operator and displaying the information from the control means. The control means reads out the outline information and internal information accumulated in the accumulating means based on the operation information,
A network management method characterized in that the contents represented by the read out summary information and internal information are displayed on the operating means.