JP3185923B2 - Information system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information system, and more particularly, to an information system that allows a management device to change a routing table in a short time.

[0002]

2. Description of the Related Art Conventionally, a router network using TCP / IP usually manages a network path controller (hereinafter, referred to as a path controller) for controlling a transmission path of information in the network and a path controller. A network management device (hereinafter, referred to as a management device) is provided, and the route control device dynamically changes a routing table used for route control using a routing protocol. However, in networks such as ATM, since dynamic routing has been standardized for a short time, the case of using static routing, that is,
In many cases, a human considers a route in advance and sets a routing table in the route control device. In the case where static routing is used, when a network is overloaded or when a route control device breaks down, a human is forced to rewrite the routing table to select a different route. When rewriting the routing table, usually, a local maintenance-dedicated terminal is connected to the route control device and rewritten.

[0003]

By the way, with the increase in the scale of the network, there is an increasing demand for rewriting by a remote management device via a network without going to work near a device (maintenance terminal device) and working. I have. In order to meet this demand, it is necessary to make the routing table of the route control device referable from the management device. However, since the amount of information in the routing table is enormous, there is a problem that it takes too much time to download the information by the management device every time it is referred. Under the current situation as described above, when changing the contents of the routing table using the maintenance terminal locally connected to the path control device, the time required to refer to the routing table by the management device is shortened, and the information having high maintainability is reduced. There is a need for a system. The same is demanded for an information system including a plurality of management devices. In view of the circumstances as described above, an object of the present invention is to provide an information system that allows a management device to change a routing table in a short time.

[0004]

The present inventor has devised a system in which the same information as the routing table set in the route control device is stored in the management device. In this system, when the management device changes the routing table, that is, rewrites the routing table, the routing table is called from the storage area of the management device, so that it does not take much time to refer to and rewrite the routing table. However, in this system, for example, when the routing table is rewritten from a maintenance terminal or the like locally connected to the route control device,
A difference occurs between the routing table set in the route control device and the routing table stored in the management device, and a new problem arises that the management device cannot manage the routing table. If the user continues to operate the information system without knowing the rewriting of the routing table, the routing table of the path control device may be destroyed.

Further, if the routing table of the route control device managed by a plurality of management devices is rewritten from one management device, the other management device cannot know the rewriting of the routing table of the route control device. There is a difference between the routing table of the routing device and the routing table of the target routing device held by the management device (see FIG. 5), and how the user is route-controlled by the routing device. A new problem arises in that it becomes impossible to grasp the information.

Therefore, the present inventor diligently studied a system in which the routing table of the route control device and the routing table of the management device are changed in conjunction with each other, and completed the present invention.

In order to achieve the above object, an information system according to a first aspect of the present invention includes a route control device for controlling a transmission route of information in a network, and a management device for managing the route control device. An information system for transmitting information via a transmission path in a network, wherein the path control device is a routing table that can be changed on the path control device side independently of the management device (hereinafter, referred to as a path-side routing table). A terminal device for inputting change data to the route-side routing table, a route-side transmitting unit for transmitting the change data input from the terminal device to the management device, and inputting the change data received from the management device to the route-side routing table A route-side input unit, wherein the management device is capable of changing the routing table (which can be changed on the management device side independently of the route control device) A management-side routing table), a data input unit for inputting change data to the management-side routing table, a management-side transmission unit for transmitting the change data input from the data input unit to the path control device, and a path control device. And a management-side input means for inputting change data received from the management-side routing table, and when change data is input from one of the terminal device of the route control device or the data input unit of the management device, the route-side routing is performed. The change data is input to the table and the management-side routing table.

In the first and second aspects of the present invention, management refers to management of configuration information, performance information, failure information corresponding to a failure, etc. of the path control device. According to the first invention, inconsistency between the management-side routing table and the route-side routing table is prevented.

[0009] The information system of the second invention according to the present invention comprises:
An information system comprising: a route control device that controls a transmission route of information in a network; and a plurality of management devices that independently manage the route control devices, wherein information is transmitted via a transmission route in the network. The route control device may further include a route-side routing table, a route-side input unit that inputs change data received from one of the plurality of management devices into the route-side routing table, and a route-side input unit that receives the change data from the one management device. A route-side transmission unit that transmits change data to another management device, wherein the management device includes a management-side routing table, a data input unit that inputs change data of the management-side routing table, and a change that is input from the data input unit. A management-side transmission unit that transmits data to the route control device; and a management-side routing table that receives changed data received from the route control device. When the change data is input to the management-side routing table from the data input unit of one management device, the route-side routing table, and the management-side routing table of the other management device are provided. It is characterized in that change data is input.

According to the second invention, consistency can be obtained in the route-side routing table and the management-side routing tables of all the management devices.

In the first and second aspects of the present invention, preferably, the management-side input means includes a detection unit for detecting change data in information received from the path control device. As a preferred embodiment of the first and second aspects of the present invention, the route-side input means includes a detection unit that detects change data in information received from the management device. Further, as another preferred embodiment of the first and second inventions, the route control device includes a management device database having information on the management device, and the route side transmission unit includes:
A destination management device is selected and transmitted based on information and change data in the management device database. Further, the path control device and the management device may each include a protocol processing unit that analyzes a communication protocol. This eliminates the need for the communication protocol to be common between the devices.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Embodiment 1 This embodiment is an embodiment of the second invention. The information system according to the present embodiment includes a route control device that controls a transmission route of information in a network, and a management device that manages the route control device, and transmits information via the transmission route in the network. It is. The information system according to the present embodiment includes, for example, a plurality of route control devices. FIG. 1 is a block diagram illustrating a configuration of the route control device. The route control device 15 includes a routing table database 7 having a route-side routing table that can be changed on the route control device side independently of the management device, a protocol processing unit 1 that performs a process of interpreting a communication protocol,
Path-side input means for inputting change data received from one of the plurality of management apparatuses to the path-side routing table. In addition, the route control device 15
A management device database 6 having information (addresses, etc.) on the management device that manages itself; a route for selecting the management device based on the information and the change data in the management device database 6 and transmitting the change data to the selected management device; A side transmission unit 4 (hereinafter, referred to as an event notification unit 4 in the present embodiment) is provided. The route-side input means includes a routing table change event detecting unit 2 (hereinafter simply referred to as a detecting unit 2) for determining whether the information processed by the protocol is a command for changing the route-side routing table, and a routing table. A database input / output processing unit (interface unit) 5 for transferring information of the database 7 and a command interpreted by the detection unit 2 and, if the command is from a management device that manages itself, the routing table database 7 And a routing table change command unit 3 for commanding rewriting of the routing table.

FIG. 2 is a block diagram showing the configuration of the management device. The management device 16 includes a protocol processing unit 8 for performing a process of interpreting a communication protocol, and a routing table database 13 having a management-side routing table.
A data input unit (not shown) for inputting change data of the management-side routing table; and management-side input means for inputting change data received from the route control device 15 to the management-side routing table. Further, the management device 16 includes a management-side transmission unit (not shown) that transmits the change data input from the data input unit to the route control device 15, and a management target route control device 15 that the change data manages.
And a managed device database 12 used to determine whether or not the data is changed from the data. The management-side input means includes a detection unit 9 for detecting changed data from the routing control device 15 managed by itself among the information processed by the protocol processing unit 8, and a database input / output for transferring information of the routing table database 13. Processing unit 11
It is determined whether the change data detected by the detection unit 9 is change data from the route control device 15 managed by itself, and if the change data is change data from the route control device 15 managed by itself, A routing table change instructing unit for instructing rewriting of the database;

In the information system of this embodiment, when the change data is input to the management-side routing table from the data input unit of one management device 16, the route-side routing table and the management-side routing of another management device are used. The change data is entered in the table. Hereinafter, the respective operations of the route control device 15 and the management device 16 will be specifically described with reference to the drawings.

FIG. 3 is a flowchart for explaining the processing operation in the route control device. When the routing controller 15 receives a packet from one management device 16, the protocol processor 1 analyzes the protocol, the detector 2 detects routing table change information (change data), and the routing table change commander 3 To communicate. The routing table change instructing unit 3 includes a database input / output processing unit 5
To the management device database 6 via the server, and determines whether or not this change data is change data from the management device managing itself. When it is determined that the data is change data from the management device that manages itself, a change of the route side routing table is instructed to the routing table database 7 via the database input / output processing unit 5. When the routing table is normally changed, the database input / output processing unit 5 transmits the change data to the route-side transmission unit 4 to all the other management devices that manage itself (the route control device 15).

FIG. 4 is a flowchart for explaining the processing operation in the management device. When the other management device receives the packet from the route control device 15, the protocol processing unit 8 analyzes the protocol, the detection unit 9 detects the change data, and notifies the routing table change command unit 10 of the fact. The routing table change instructing unit 10 inquires of the managed device database 12 via the database input / output processing unit 11 and determines whether the changed data is changed data from the route control device managed by itself. When it is determined that the data is change data from the route control device managed by itself, a change of the management-side routing table is instructed to the routing table database 13 via the database input / output processing unit 11.

Hereinafter, a specific example of the embodiment will be described as an example. Embodiment In this embodiment, TCP is used as a method of notifying (transmitting) changed data when the routing table is rewritten.
/ Uses the network management standard protocol SNMP in the IP network. As a result, the amount of change in the software of the network device can be minimized. When SNMP is used, an SNMP trap command is used to notify the contents of a change in the routing table. Further, instead of SNMP, CMIP, which is a standard protocol for OSI network management, may be used.

[0018]

According to the first aspect of the present invention, there is provided a route control device having a route-side routing table and controlling a transmission route of information in a network, and a management device having a management-side routing table and managing the route control device. When change data is input from one of the terminal device of the route control device or one of the data input units of the management device, the change data is input to the route side routing table and the management side routing table. You. According to the first aspect of the present invention, an information system that can change the routing table from the management device in a short time is realized. When the route-side routing table is rewritten by inputting the change data from the terminal device, the management-side routing table is also re-written, so that there is no inconsistency between the route-side routing table and the management-side routing table.

According to the second aspect of the present invention, there is provided a route control device having a route-side routing table and controlling a transmission route of information in a network, and a plurality of devices having a management-side routing table and managing the route control device. When change data is input to the management-side routing table from the data input unit of one management device, the change data is stored in the route-side routing table and the management-side routing table of the other management device. Is entered. Second
According to the invention, as in the first invention, an information system in which the routing table can be changed from the management device in a short time is realized. Note that if the management-side routing table is rewritten by inputting the change data from the data input unit of one management device, the path-side routing table and the other management-side routing tables are also rewritten, so that inconsistency may occur between the routing tables. There is no. Therefore, it is not necessary to manually reflect the content rewritten by one management device on another management device.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a route control device according to an embodiment.

FIG. 2 is a block diagram illustrating a configuration of a management device according to the embodiment.

FIG. 3 is a flowchart illustrating a processing operation in the route control device in the embodiment.

FIG. 4 is a flowchart illustrating a processing operation in the management device in the embodiment.

FIG. 5 is a schematic diagram illustrating that inconsistency occurs between management-side routing tables of a plurality of management devices that manage the route control device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Protocol processing part 2 Routing table change event detection part (detection part) 3 Routing table change instruction part 4 Route side transmission part (event notification part) 5 Database input / output processing part 6 Management device database 7 Routing table database 8 Protocol processing part 9 Routing table change event detection unit detection unit 10 Routing table change instruction unit 11 Database input / output processing unit 12 Managed device database 13 Routing table database 15 Route control device 16 Management device

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI H04L 12/56

Claims (5)

(57) [Claims] 1. An information system comprising: a route control device that controls a transmission route of information in a network; and a management device that manages the route control device, and transmits information via a transmission route in the network. The route control device includes a management device database having information on a management device that manages itself, a routing table (hereinafter, referred to as a route-side routing table) that can be changed on the route control device side independently of the management device, and a route. A terminal device for inputting change data to the side routing table, a route-side input means for inputting change data received from the management device to the route-side routing table, and the change data input from the terminal device to the change data and the management device database. And a path-side transmitting unit that transmits the information to a management device that manages the device based on the information that the The management device includes a routing table that can be changed on the management device side independently of the path control device (hereinafter, referred to as a management-side routing table), a data input unit that inputs change data to the management-side routing table, A management-side transmission unit that transmits change data input from the input unit to the path control device; and a management-side input unit that inputs change data received from the path control device to the management-side routing table. Alternatively, when change data is input from one of the data input units of the management device, the change data is input to the route side routing table and the management side routing table. 2. A route control device, comprising: a plurality of management devices for independently managing the route control devices, wherein when change data is input from a data input unit of one management device, the route control devices managed by the management devices are provided. An information system, wherein the change data is input to a route-side routing table of the above and a management-side routing table of a plurality of management devices that manage the route control device. 3. The information system according to claim 1, wherein the management-side input unit includes a detection unit that detects change data in information received from the path control device. 4. The information according to claim 1, wherein the route-side input unit includes a detection unit that detects change data in information received from the management device. system. 5. The apparatus according to claim 1, wherein the route control device and the management device each include a protocol processing unit that analyzes a communication protocol.
Information system described in section.