JPH11234399A - Network management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simulatively arrange plural management object devices in a straight line with a channel and to reconstruct the channel by information collection of each management object device even if the channels is disconnected. SOLUTION: This system has plural management object devices 2 to 4 which are connected to a channel 17 that extends from a network management device 1 in a straight line, successively relays a telegraphic message to the device 2 to 4 on the next stage in the direction of the device 1, and makes the message reach the device 1 by connecting devices 5 to 7 provided at each device 2 to 4 under the control of the device 1 when a destination number in the telegraphic message sent from the device 1 does not coincide with a self-device number.

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 used by a network management device for collecting and distributing information from a plurality of devices to be managed such as an exchange via a communication path.

[0002]

2. Description of the Related Art In a conventional network management system,
Normally, a maintenance line for information collection by the network management device is set to one-to-N from the network management device to all managed devices, or a maintenance line described in, for example, JP-A-6-224095. As in the circuit configuration method, a maintenance line interface section is provided for each device to be managed provided on one maintenance line, and data (call signal, etc.) on the maintenance line destined for the own device is provided. A configuration of taking out and returning a response was adopted.

[0003]

However, in such a conventional network management system, a management communication line for collecting information on each managed device from the network management device to all managed devices. In addition to the need to connect the network management device and the interface unit, there is a problem that the network management device needs to be provided with the same number of communication ports as the number of devices to be managed.

According to the present invention, a plurality of devices to be managed, such as a circuit switching device, are quasi-linearly arranged by using a communication path, and even if the communication path is disconnected, the communication path is re-established by collecting information of each of the managed devices. It is an object of the present invention to provide a network management system which enables construction and secures an optimum communication path, thereby realizing network management with a small number of communication paths and ports.

[0005]

To achieve the above object, a network management system according to the first aspect of the present invention includes a plurality of managed devices connected to a communication path extending straight from a network management device. When a destination number in a message transmitted from the network management device does not match its own device number under the control of the network management device, the network management device The message is sequentially relayed to the next-stage management target device in the direction, so as to reach the network management device.

Further, a network management system according to a second aspect of the present invention causes the network management device to collect information on adjacent nodes from the connecting device to recognize a network configuration, and to manage each managed device based on the recognition result. Are calculated in an straight line, and the ports of the connecting devices are connected using a telephone line.

A network management system according to a third aspect of the present invention is a network management system, wherein a port for a network management device for setting a communication path using a switching line in accordance with an instruction from the network management device is provided for the connection device. A port and a port for a device to be managed are provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a network management system according to the present invention.
Is a network management device that manages the entire network, 2, 3, and 4 are exchanges as a plurality of devices to be managed connected to a communication path extending straight from the network management device 1, and 5, 6, and 7 are exchanges 2, Under the control of the network management device 1, the connection devices 5, 6, and 7 are provided with a destination number in a message transmitted from the network management device 1. When it does not match the device number, it functions to successively relay the message to the next switch in the direction of the network management device 1 and establish a communication path to reach the network management device 1. Further, the network management device 1, the exchanges 2, 3, 4 and the connectors 5, 6, 7 are provided with extensions 8, 9, 10, 12, 13, 1 for each of the exchanges 2, 3, 4.
5 and 16 and the relay lines 11 and 14, they are quasi-linearly arranged to form a serially connected communication path 17 as shown by a dotted line.

FIG. 2 shows the internal structure of the connecting devices 5, 6, and 7. Since these have the same configuration, only one connecting device 5 is shown here. The connecting device 5 has three input / output ports: a port 18 for the network management device, a port 19 for the next connecting device, and a port 20 for the object to be managed. , A network management device is connected thereto, and an incoming call detection unit 21 for detecting an incoming call from the extensions 8 and 9 is connected thereto. The port 19 for the next connecting device is connected to a dial unit 22 for performing dialing for connecting to the next connecting device 6 via the extension 10.

FIG. 3 shows a format of a message transmitted by the network management apparatus 1 used in the present invention. In the header of the message, a destination 23 is set.
According to the type 24 in the message, this message is transmitted to each exchange 2,
It is possible to distinguish whether the message is a message addressed to 3, 4 or a message for controlling each of the connecting devices 5, 6, 7. When the connection information is received from the port 18 for the network management device, the connection devices 5, 6, and 7 have the destination information addressed to the own device, and when the connection information is for the exchanges 2, 3, and 4, the connection device 5 manages the message. To the destination port 20. On the other hand, if the message is addressed to the own device but is a message for controlling the connecting devices 5, 6, and 7, the connecting devices 5, 6, and 7 are controlled in accordance with the control information. If the destination is different, relay to the port 19 for the next connecting device. In addition, the destination of the network management device 1 is set as the destination 23 in the message received from the management target port 20 and transmitted to the network management device port 18. The message received from the port 19 for the next connecting device is relayed to the port 18 for the network management apparatus as it is.

FIG. 4 shows the network configuration information in FIG. 1 recognized by the network management device 1, and specifically has information on devices adjacent to the exchanges 2, 3, and 4.

FIGS. 5A and 5B show flowcharts for the network management device to calculate the shortest path based on network configuration information. First, in obtaining the shortest route, as shown in FIG. 5A, first, the destination of each exchange is set at the head of the list (step S1), and the cyclic route from each exchange is calculated (step S2). . FIG.
FIG. 4B shows the procedure for calculating the traveling route.
Is selected from information on other exchanges adjacent to the exchange (herein referred to as adjacent devices) as shown in FIG.
3). Here, it is determined whether or not all adjacent devices have been selected (step S4).
If not, the selected adjacent device is added to the end of the list (step S5).

In this way, it is determined whether or not all the neighboring devices in the network have been selected (step S6).
If not all are selected, the traveling route is calculated from the adjacent device (step S7), the selected adjacent device is deleted from the list, and the processing from step S3 is repeated (step S8). On the other hand, if all adjacent devices have been selected in step S6, it is checked whether the list is shorter than the stored route information (step S9). If shorter, the current list information is replaced with the new route information. The information is stored as information (step S10), the selected adjacent device is deleted from the list (step S8), and the processing from step S3 is repeated. Also, if the list is shorter than the route information in step S9, the selected neighboring device is deleted from the list, and then the processing in step S4 and subsequent steps is executed again.

FIG. 6 shows the shortest route information calculated as a result of performing the processing of the flowchart of FIG. 5 based on the network configuration information of FIG.

Next, the operation will be described. The network management device 1 recognizes the network configuration information as shown in FIG. 4 as an initial state, and calculates the shortest path information as shown in FIG. 6 according to the flowchart shown in FIG. According to the calculated shortest path information, the network management apparatus 1 sets a communication path for the connecting device 5 by:
Dialing is performed to the extension 9 via the extension 8 to which the network management device 1 is connected. The connecting device 5 detects a call signal from the extension 9 and responds, thereby establishing a communication path between the network management device 1 and the connecting device 5.

Next, the network management device 1 transmits an instruction for dialing to the extension 12 to the connecting device 5 connected via the communication path established in this way. The connecting device 5 receiving this instruction instructs the dial section 22 to continue the connecting device 6 via the next connecting device port 19. Thereby, the extension 1 is connected to the connecting device 6.
The communication path between the network management device 1 and the connecting device 6 is established by detecting and responding to the call signal from the communication device 2.

Similarly, the network management apparatus 1 transmits a dialing instruction to the extension 15 to the connecting device 6 connected via the established communication path. The connecting device 6 receiving this instruction instructs the dial section 22 to connect to the connecting device 7 via the port 19 for the next connecting device. Thus, the connecting device 7 detects the call signal from the extension 15 and responds, thereby establishing a communication path between the network management device 1 and the connecting device 7. In this way, the network management device 1 sets a communication path from the connecting device 5 to the connecting device 7 and establishes a communication path 17 from the exchange 2 to the exchange 4 as shown by a dotted line in FIG.

Next, a case where an exchange is added will be described. In the following, the same components as those shown in FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted. As shown in FIG. 7, when the exchange 26 is added, the network configuration information in the network management device 1 is as shown in FIG. When the shortest route calculation is performed according to the flowchart of FIG. 5 based on this, the shortest route information shown in FIG. 9 is calculated, and the management communication path 27 indicated by a dotted line in FIG. 7 is set. When a trunk line is added between the exchanges, for example, as shown in FIG. 10, when a trunk line 28 is added between the exchange 26 and the exchange 4, network configuration information as shown in FIG. It is recognized by the network management device 1. Therefore, based on this, when the shortest route is calculated according to the flowchart of FIG. 5, the shortest route shown in FIG. 12 is calculated, and the communication path 29 shown by the dotted line in FIG. 10 is set.

Next, a case where a fault occurs in a relay line between exchanges will be described. For example, as shown in FIG. 13, when a failure occurs in the trunk 11 connecting the exchange 2 and the exchange 3, the exchange 2 notifies the network management device 1 that a trunk failure has occurred. Upon receiving this, the network management device 1 stores the network configuration information in FIG.
1 to FIG. 14, and based on this, FIG.
According to the flowchart shown in FIG. 15, the latest shortest path is calculated, and as a result, the shortest path as shown in FIG. 15 is obtained.
Then, according to the shortest route, the network management device 1
, A new communication path 30 is set as shown by the dotted line in FIG.

[0020]

As described above, according to the present invention, a plurality of devices to be managed are connected to a communication path extending straight from a network management device, and a connecting device provided for each of the devices to be managed is provided. Under the control of the network management device, if the destination number in the message transmitted from the network management device does not match the own device number, the next managed device in the direction of the network management device is The message is sequentially relayed to reach the network management device, so that all the connectors can be virtually connected to the network management device in a straight line, and each connection can be made using the least number of communication paths. The information generated on the management target device side can be transmitted to the network management device, and the effect of performing efficient network management can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a network management system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing details of a connecting device shown in FIG. 1;

FIG. 3 is an explanatory diagram showing a format of a telegram used in the present invention.

FIG. 4 is an explanatory diagram showing network configuration information used in the present invention.

FIG. 5 is a flowchart showing a procedure for calculating the shortest path of the network management system according to the present invention.

FIG. 6 is an explanatory diagram showing the shortest route information obtained by the calculation procedure of FIG.

FIG. 7 is a block diagram showing a network management system according to another embodiment of the present invention.

FIG. 8 is an explanatory diagram showing network configuration information used in FIG. 7;

FIG. 9 is an explanatory diagram showing shortest path information in the network management system of FIG. 7;

FIG. 10 is a block diagram showing a network management system according to another embodiment of the present invention.

FIG. 11 is an explanatory diagram showing network configuration information used in FIG.

FIG. 12 is an explanatory diagram showing shortest path information in the network management system of FIG.

FIG. 13 is a block diagram showing a network management system according to another embodiment of the present invention.

FIG. 14 is an explanatory diagram showing network configuration information used in FIG.

15 is an explanatory diagram showing the shortest route information in the network management system of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Network management device 2,3,4,26 Switch (managed device) 5,6,7 Connecting device 17,27,29,30 Communication path 18 Network management device port 19 Port for secondary connecting device 20 Port for management target

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[Procedure amendment]

[Submission date] March 19, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

For the purposes achieved SUMMARY OF THE INVENTION The network management system according to a first aspect of the invention, a plurality of managed devices connected to the communication path extending in a straight line from the network management device, the management target the provided et been with each device, under the control of the network management device,
When the destination number in the message transmitted from the network management device to one destination does not match the own device number,
A relay for sequentially relaying the message to the next-stage management target device in the direction of the network management device and establishing a communication path to reach the network management device .
It is characterized by the following .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

Further, in the network management system according to the invention of claim 2, wherein the network management device
Collects node information adjacent the said connecting device or tube
Network information sent from the target device via the connector
Recognize the network configuration by collecting broadcast, that each managed device based on the recognition result by calculating the optimum patrol route connecting in a straight line, connecting the port of each connected device using a telephone line Features .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

[0020]

As described above, according to the present invention, a plurality of devices to be managed are connected to a communication path extending straight from a network management device, and a connecting device provided for each of the devices to be managed is provided. , Under the control of the network management device, one destination
If the destination number in the message transmitted toward the network management device does not match the own device number, the message is sequentially relayed to the next management target device in the direction of the network management device to reach the network management device. Because it was configured as
All connecting devices can be virtually connected to the network management device in a straight line, and information generated on each device to be managed can be transmitted to the network management device using the shortest communication path, resulting in efficient network management. Can be obtained. In addition, the network management device
Network using information generated on the
Reconfiguration can be performed sequentially.

Claims (3)

[Claims] A plurality of managed devices connected to a communication path extending in a straight line from the network management device; and a plurality of managed devices provided for each of the managed devices, the network management device being controlled by the network management device. If the destination number in the message transmitted from the server does not match the own device number, the message is sequentially relayed to the next management target device in the direction of the network management device to reach the network management device. A network management system, comprising: a connecting device for establishing a path. 2. The network management device collects information on adjacent nodes from the connecting device to recognize a network configuration, and calculates an optimal traveling route connecting the respective managed devices in a straight line based on the recognition result. The network management system according to claim 1, wherein the ports of each connecting device are connected using a telephone line. 3. The connection device according to claim 1, wherein the connection device has a port for a network management device, a port for a next connection device, and a port for a device to be managed for setting a communication path using a switched line according to an instruction from the network management device. The network management system according to claim 1, wherein