JP2004165718A - Method for changing network setting information and communication exchange - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent network setting information from being changed by mistake. <P>SOLUTION: A communication exchange judges whether or not a command received from a management apparatus is a particular command (S3), executes the particular command (S6) to change the network setting information (S7) when the judgement indicates YES. The communication exchange judges whether or not a change confirmation command is received from the management apparatus by the time when a prescribed time elapses (S9) and restores the network setting information to contents before the change (S10) when the judgement indicates NO. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for changing network setting information and a communication exchange.
[0002]
[Prior art]
2. Description of the Related Art A LAN switch (for example, see Non-Patent Document 1) has been known as a communication exchange used in a communication network system. Recently, a LAN switch installed outdoors has also appeared. For a LAN switch installed outside such a place away from the system administrator, a management device that manages the state of the LAN switch is provided on the system administrator side.
[0003]
This management device specifies the IP address of the LAN switch for remote access in order to manage the state of the LAN switch. The IP address of the LAN switch can be set and changed from the management device side.
[0004]
[Non-patent document 1]
Cisco Systems, Inc., “CISCO LAN SWITCH Cisco Catalyst 2950C-24, 2950T-24, 2950G-12, 2950G-24, 2950G-48, 2950G-24-DC Intelligent Ethernet Switch”, [online], [October 2002 Search on the 25th of the month], the Internet <URL: http: // www. cisco. com / japanese / warp / public / 3 / jp / product / product / switch / cat2950 / prodlit / pdf / cat2950_c_t_cat. pdf>
[0005]
[Problems to be solved by the invention]
However, if the IP address of the LAN switch is once changed to erroneous information due to an erroneous input from the management device or a design error, the management device cannot remotely access the LAN switch again. A situation can occur. When such a situation occurs, there is a problem that the system administrator has to go directly to the setting location of the LAN switch and reset the IP address, which is troublesome. Further, such a problem is not limited to the case where the IP address of the LAN switch is set or changed, but also occurs, for example, when the network setting information such as the filter setting of the LAN switch and the VLAN (Virtual LAN) setting is incorrect. obtain.
[0006]
Therefore, an object of the present invention is to provide a network setting information changing method and a communication exchange which can prevent the setting information of the network from being changed by mistake in order to solve the above-mentioned problem.
[0007]
[Means for Solving the Problems]
The method for changing network setting information according to the present invention is a method for changing network setting information in a communication exchange, and when a specific command is received from a management device, changes the network setting information based on the execution content of the command. A setting information change step to be performed, a determination step of determining whether or not a change confirmation command has been received from the management device during a period from when the setting information is changed in the setting information change step until a predetermined time has elapsed, And a setting information restoring step of restoring the setting information changed in the setting information changing step to the contents before the change when it is determined in the step that the change confirmation command is not received.
[0008]
Further, the communication exchange of the present invention, when receiving a specific command from the management device, changes the setting information of the network based on the execution content of the command, Determining means for determining whether or not a change confirmation command has been received from the management device before a predetermined time has elapsed after the change; and determining that the change confirmation command has not been received by the determination means. And setting information restoring means for restoring the setting information changed by the setting information changing means to the contents before the change.
[0009]
According to these inventions, if it is determined that the change confirmation command has not been received from the management device before the predetermined time has elapsed since the change of the network setting information, the network setting information is changed. The previous contents will be restored. That is, even if the network setting information is temporarily changed to incorrect information due to an erroneous input from the management device or the like, the network setting information can be restored to the contents before the change. Therefore, it is possible to prevent the setting information of the network from being changed by mistake.
[0010]
In the method for changing network setting information of the present invention, it is preferable that the method further includes a setting information determining step of determining the changed setting information in the setting information changing step when it is determined in the determining step that the change confirmation command has been received. .
[0011]
Preferably, the communication exchange of the present invention further includes a setting information deciding means for deciding the setting information changed by the setting information changing means when the judgment means judges that the change confirmation command has been received.
[0012]
With this configuration, if it is determined that the change confirmation command has been received from the management device before the predetermined time has elapsed since the change of the network setting information, the network setting information is changed. Can be determined by the content of. That is, when it is determined that the network setting information has been correctly changed, the network setting information is determined with the changed contents.
[0013]
In the method for changing network setting information according to the present invention, the setting information preferably includes at least address information of the communication exchange.
[0014]
In the communication exchange according to the present invention, the setting information preferably includes at least address information of the communication exchange, and the communication exchange is preferably a LAN switch.
[0015]
With this configuration, it is possible to prevent the address information of the communication exchange (particularly, the LAN switch) from being erroneously changed.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a communication system including a communication exchange according to the present invention will be described with reference to the drawings. In each of the drawings, the same elements will be denoted by the same reference symbols, without redundant description.
[0017]
FIG. 1 is a diagram illustrating a schematic configuration of a communication system 1 according to the present embodiment. As shown in FIG. 1, the communication system 1 includes a management center 6 for managing the communication system 1, a communication exchange 2 connected to the management center 6 via a trunk cable 5, and a branch cable 9 connected to the communication exchange 2. And a plurality of user terminal equipments 10 connected via the terminal.
[0018]
The management center 6 includes a network device 7 and a management device 8. The network device 7 is a device that is installed between each terminal and mediates network communication when performing communication between a plurality of terminals. For example, a router corresponds to the network device 7. The network device 7 has a function of transmitting data received from a terminal connected immediately below or an adjacent network device to another terminal connected immediately below or another adjacent network device. The management device 8 has a function of remotely accessing the communication exchange 2, changes network setting information such as an IP address set in the communication exchange 2, and sets settings for managing the temperature and the like in the communication exchange 2. Change information. The management device 8 does not necessarily need to be connected to the communication exchange 2 via the network device 7 and may be connected to the communication exchange 2 without using the network device 7.
[0019]
The user terminal equipment 10 includes a media converter 11, a switch 12, and a user terminal 13. The media converter 11 is a device for mutually converting an optical signal and an electric signal. The switch 12 is a device having a function of transmitting received data to a target terminal, and has a plurality of ports. The switch 12 holds information on which terminal is connected to which port, and when transferring received data, determines the port to be transmitted based on this information. More specifically, the switch 12 refers to destination address information (MAC address, IP address, port number, etc.) included in the received data, and directly or indirectly connects a terminal corresponding to the destination address information. Identifying the port on which the terminal is connected, and transferring data from the port to the terminal. Here, a switch for checking a MAC address is generally called a layer 2 switch, a bridge, and the like, and a switch for checking an IP address is generally called a layer 3 switch, a router, and the like, and a switch for checking a port number. This is called a layer 4 switch or the like. The user terminal 13 is connected to the communication exchange 2 via the switch 12 and the media converter 11. When the number of the user terminals 13 is one, the media converter 11 and the user terminals 13 may be directly connected without using the switch 12.
[0020]
The communication switch 2 has the same performance as the network device 7 and is a device that can be installed outdoors. For example, a LAN switch corresponds to the communication exchange 2. An external power supply 4 is connected to the communication exchange 2 via a power cable 3, and power is supplied to the communication exchange 2 by the external power supply 4. As the external power supply 4, a commercial power supply, an uninterruptible power supply, a power supply superimposed on a communication cable, or the like is used.
[0021]
Next, a functional configuration of the communication exchange 2 will be described with reference to FIG. As shown in FIG. 2, the communication exchange 2 includes a setting information changing unit 21, a clock unit 22, a confirmation determining unit 23, a setting information restoring unit 24, and a setting information deciding unit 25. Hereinafter, each function will be described.
[0022]
First, the setting information change unit 21 determines whether or not the command received from the management device 8 is a specific command. If the command is determined to be a specific command, the setting information change unit 21 changes the command by executing the command. The network setting information is temporarily stored in a random access memory (RAM) (not shown), and then the command is executed. Further, the setting information changing unit 21 changes the setting information of the network based on the execution content of the command received from the management device 8. Here, the specific command corresponds to a command that may cause a link to be disconnected at the time of remote access from the management device 8, and for example, a command for changing an IP address setting, a command for changing a filter setting , There is a command to change the setting of a VLAN (Virtual LAN).
[0023]
The timer 22 measures the elapsed time immediately after the setting information of the network is changed by the setting information changing unit 21.
[0024]
The confirmation determination unit 23 determines whether or not a change confirmation command has been received from the management device 8 before the time measured by the clock unit 22 elapses a predetermined time (for example, 10 minutes). . That is, the confirmation determination unit 23 determines whether or not a change confirmation command has been received from the management device 8 before a predetermined time has elapsed since the setting information of the network was changed by the setting information changing unit 21. .
[0025]
The setting information restoring unit 24 stores the network setting information changed by the setting information changing unit 21 in the RAM when the check determining unit 23 determines that the change confirmation command has not been received within the predetermined time. Overwrite the network setting information. That is, the setting information restoring unit 24, when the confirmation determining unit 23 determines that the change confirmation command has not been received within the predetermined time, changes the setting information of the network changed by the setting information changing unit 21 before the change. Restore content.
[0026]
The setting information determining unit 25 determines the setting information of the network changed by the setting information changing unit 21 when the confirmation determining unit 23 determines that the change confirmation command has been received within a predetermined time.
[0027]
Next, with reference to FIG. 3, an outline operation of a network setting information change process executed in the communication system 1 will be described.
[0028]
As shown in FIG. 3, first, for example, the operator specifies the IP address of the communication exchange 2 from the management device 8 and uses Telnet, so that the management device 8 remotely accesses the communication exchange 2 (step S1). ). Next, the management device 8 transmits the command input by the operator to the communication exchange 2 (Step S2).
[0029]
The setting information changing unit 21 of the communication exchange 2 determines whether the command received from the management device 8 is a specific command (Step S3). If this determination is NO (step S3; NO), the communication exchange 2 executes the command received from the management device 8 (step S4), and terminates the network setting information change processing.
[0030]
On the other hand, if it is determined in step S3 that the command received from the management device 8 is a specific command (for example, a command for changing the setting of the IP address) (step S3; YES), the communication switch 2 The setting information changing unit 21 temporarily stores the network setting information (for example, the IP address of the communication exchange 2) changed by executing this command in the RAM (step S5).
[0031]
Next, the setting information changing unit 21 executes the specific command received from the management device 8 (Step S6). Then, the setting information change unit 21 changes the setting information of the network based on the execution content of the specific command received from the management device 8 (Step S7).
[0032]
Next, the clock unit 22 of the communication exchange 2 starts measuring the elapsed time immediately after the setting information of the network is changed by the setting information changing unit 21 (step S8). The confirmation determination unit 23 determines whether or not a change confirmation command has been received from the management device 8 before the time measured by the clock unit 22 elapses a predetermined time (for example, 10 minutes). (Step S9).
[0033]
If the determination in step S9 is NO (step S9; NO), the setting information restoring unit 24 rewrites the network setting information changed by the setting information changing unit 21 to the network setting information stored in the RAM. As a result, the network setting information is restored to the contents before the change (step S10).
[0034]
On the other hand, if it is determined in step S9 that the change confirmation command has been received within the predetermined time (step S9; YES), the setting information determination unit 25 determines whether the network changed by the setting information The setting information is determined (step S11).
[0035]
As described above, in the communication exchange 2 according to the present embodiment, the confirmation determination unit 23 determines that the change confirmation command has not been received from the management device 8 until a predetermined time has elapsed after the change of the network setting information. In this case, it is assumed that the IP address of the communication exchange has been changed to incorrect information once, and the setting information restoring unit 24 restores the network setting information to the contents before the change. In other words, even when the IP address of the communication exchange is temporarily changed to incorrect information due to an erroneous input from the management device 8, the setting information restoring unit 24 restores the network setting information to the contents before the change. be able to. Accordingly, it is possible to prevent a situation in which the remote access from the management apparatus to the communication exchange 2 cannot be performed again.
[0036]
Further, such an effect is not limited to the case where the IP address of the communication exchange 2 is erroneously input. For example, the network setting information such as the filter setting and the VLAN (Virtual LAN) setting of the communication exchange 2 may be erroneously input. In the same way, they can be obtained in the same manner.
[0037]
【The invention's effect】
According to the method for changing network setting information and the communication exchange according to the present invention, it is possible to prevent the setting information of the network from being changed by mistake.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a communication system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a functional configuration of the communication exchange shown in FIG.
FIG. 3 is a sequence chart showing an outline operation of a network setting information change process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Communication system, 2 ... Communication exchange, 3 ... Power cable, 4 ... External power supply, 5 ... Trunk cable, 6 ... Management center, 7 ... Network equipment, 8 ... Management device, 9 ... Branch cable, 10 ... User terminal equipment, 11 ... Media converter (MC), 12 ... Switch (SW), 13 ... User terminal, 21 ... A setting information changing unit, 22 a clock unit, 23 a confirmation determining unit, 24 a setting information restoring unit, 25 a setting information deciding unit;

Claims (7)

A method for changing network setting information in a communication exchange, comprising:
A setting information change step of, when a specific command is received from the management device, changing network setting information based on the execution content of the command;
A determination step of determining whether or not a change confirmation command has been received from the management device during a predetermined time after the setting information is changed in the setting information change step;
A setting information restoring step of restoring the setting information changed in the setting information changing step to the contents before the change when it is determined in the determining step that the change confirmation command has not been received. How to change network setting information. The method according to claim 1, further comprising a setting information determination step of determining the setting information changed in the setting information changing step when it is determined in the determination step that the change confirmation command has been received. How to change network setting information. 3. The method according to claim 1, wherein the setting information includes at least address information of a communication switch. Setting information changing means for changing network setting information based on the execution content of the command when a specific command is received from the management device;
Determining means for determining whether or not a change confirmation command has been received from the management device before a predetermined time has elapsed since the setting information was changed by the setting information changing means;
Setting information restoring means for restoring the setting information changed by the setting information changing means to the contents before the change when it is determined by the judging means that the change confirmation command has not been received. Telecommunication exchange. 5. The apparatus according to claim 4, further comprising a setting information determination unit configured to determine the setting information changed by the setting information changing unit when the determination unit determines that the change confirmation command has been received. 6. Communication exchange. The communication switch according to claim 4, wherein the setting information includes at least address information of the communication switch. The communication switch according to any one of claims 4 to 6, wherein the communication switch is a LAN switch.

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