JPH1165951A - SNMP protocol conversion method - Google Patents

Abstract

(57) Abstract: An object of the present invention is to enable access between an SNMP protocol and a non-SNMP protocol, and enable a single monitoring and control device to monitor and control all devices in a network. An SNMP protocol signal received from a transmission source device connected to a network is transmitted to any non-SNMP device.
A means for identifying whether to perform protocol conversion and a conversion table prepared by the identification means, and referring to the conversion table to convert to a non-SNMP protocol signal used by a destination apparatus connected to another network, Means for transmitting to a destination device. Also, a means for identifying which type of non-SNMP protocol the non-SNMP protocol signal received from the source device connected to the network, and a conversion table are prepared by the identification means, and the conversion table is referred to the network by referring to the conversion table. Means for converting to an SNMP protocol signal used by the connected destination device and transmitting the signal to the destination device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to protocol conversion between networks having different protocols, and more particularly to S
NMP (Simple Network Management)
ment Pr-otocol) protocol to non-SN
It relates to the conversion to the MP protocol or the conversion from the non-SNMP protocol to the SNMP protocol.

[0002]

2. Description of the Related Art Conventionally, this type of protocol converter has
For example, it is disclosed in JP-A-6-152861.

FIG. 5 is a block diagram showing an example of a conventional protocol converter.

In FIG. 5, OSI manager 31 is C
The SNMP agent 33 and the SNMP agent 34 have the SNMP protocol, and the two manager agents have the CMIP protocol.
-Access is possible via the SNMP gateway 32. As an operation, the CMIP-SNMP gateway 32 converts the CMIP protocol transmitted from the OSI manager 31 into the SNMP protocol, and
The CMIP-SNMP gateway 32 sends the SNMP protocol sent from the SNMP agent 33 or 34 to the CMI
It is converted to the P protocol and sent to the OSI manager 31.

[0005]

The first problem is that the SN
That is, it is impossible to access between a device using the MP protocol and a device not using the MP protocol.

[0006] The reason is that the monitoring and control device on the network using the SNMP protocol uses the SNMP.
This is because devices that do not use the protocol cannot be monitored and controlled, and dedicated monitoring devices are required for each device.

[0007] An object of the present invention is to convert an SNMP protocol and a non-SNMP protocol so that a device using the SNMP protocol can access a device not using the SNMP protocol. It is to enable monitoring and control of the device.

[0008]

That is, in order to solve the above-mentioned problems, an SNMP protocol conversion system of the present invention uses a second network which communicates by a non-SNMP protocol with a first network which communicates by an SNMP protocol. A first device connected to a plurality of networks;
The first identification means for identifying which non-SNMP protocol conversion of the SNMP protocol signal received from the transmission source apparatus connected to the first network, and the first identification means A first conversion table is prepared, and the second conversion table is referred to with reference to the first conversion table.
And a transmission means for converting the signal into a non-SNMP protocol signal used by a destination device connected to the network and transmitting the signal to the destination device.

The protocol conversion method according to the present invention uses
A first network that communicates with the NMP protocol;
A first device connected to a plurality of second networks that communicate by a non-SNMP protocol, wherein the first device receives a non-SNMP protocol received from a source device connected to the second network; Second identification means for identifying which kind of non-SNMP protocol this signal is;
A second conversion table is prepared by the second identification means, and the SNM used by the destination device connected to the first network is referred to by referring to the second conversion table.
And transmitting means for converting the signal into a P protocol signal and transmitting the signal to the destination apparatus.

[0010] In addition to the above, the first device has a plurality of interfaces corresponding to each of the second networks communicating with each other by the non-SNMP protocol, and receives the data from the first network or the second network. It is characterized by comprising means for identifying a transmission source and a transmission destination from a signal.

[0011]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is a block diagram showing a configuration example of a network system according to the embodiment of the present invention.

In FIG. 2, a block diagram showing a network includes a protocol converter 1, a supervisory controller 8,
The target device 9, the target device 10, the target device 11, and the networks 21, 22, and 23 are configured. The monitoring control device 8 monitors and controls the target device 9 and the target device 10 connected to the protocol conversion device 1 and the target device 11 in the same network.

At this time, the protocol converter 1 converts the protocol between the monitoring controller 8 and the target device 9 or between the monitoring controller 8 and the target device 10.

The protocol used by the target device 9 and the target device 10 is a non-SNMP protocol. The protocol used by the target device 11 is SNMP.

FIG. 1 is a detailed block diagram of the protocol converter 1 of FIG.

Referring to FIG. 1, a protocol converter 1
Is a connection port 2 for connection to a network using the SNMP protocol, a target device determination function 3 for determining to which device a signal transmitted from the monitoring control device 8 in FIG. 2 is to be transmitted, and a target device From a signal (character string) received from the server, a protocol discriminating function 5 for discriminating which non-SNMP protocol it uses, and conversion into a signal using the SNMP protocol or a signal (character string) using the non-SNMP protocol A protocol conversion function 4, a file 200 storing information of a protocol data table, a data table 100 created from the file 200 based on information sent from the object determination function 3 or the protocol determination function 5, It has a port 6 and a port 7 for connecting to the port.

The target device determining function 3 determines which device is to be sent from the received SNMP signal. The protocol is determined by the determined destination device, and the result of the determination (which protocol should be converted) and the received SNMP
The signal is sent to the protocol conversion function 4.

The protocol discriminating function 5 receives the received non-SNM.
The protocol of the P signal is determined. The result of the determination (which protocol signal is used) and the received non-SNMP signal are sent to the protocol conversion function.

The protocol conversion function 4 determines which data table (for conversion from SNMP to non-SNMP) is prepared by looking at the transmission destination device when it is received from the target device determination function 3. When the protocol conversion function 4 receives the data from the protocol determination function 5, the protocol conversion function 4 checks the protocol determination result and determines which data table (non-SNMP to SN
(For conversion to MP) is prepared.

The data table 100 stores a non-S
The conversion information from the NMP protocol to the SNMP protocol or the conversion information from the SNMP protocol to the non-SNMP protocol is stored.

In the file 200, information corresponding to a non-SNMP protocol required for protocol conversion is separated into data table directories for each type of protocol.
Is stored. Therefore, the information on the protocol conversion read from the data table directory of the file 200 according to the instruction of the protocol conversion function 4 is stored in the data table 100.

Port 6 and Port 7 via the network
The non-SNMP protocol of the same type is assigned to each port unit so that the type of non-protocol connected to the target device can be easily determined.

FIG. 1 shows the operation of the embodiment of the present invention.
This will be described in detail with reference to FIG.

Now, data is transmitted from the monitoring control device 8 to the target device 9.

The transmitted data is received by the protocol converter 1.

In the protocol converter 1, the signal transmitted from the monitoring control device 8 to the target device 9 is first determined by the target device determination function 3 to be a signal transmitted to the target device 9.

The signal determined by the target device determination function 3 and the determination information are sent to the protocol conversion function 4. The protocol conversion function 4 prepares a conversion data table for the target device 9 in the data table 100 based on the sent determination result information.

The protocol conversion function 4 classifies the transmitted signal for each defined identification value, and converts the character string and the protocol by comparing the signal with the prepared data table 100.

The protocol conversion function 4 converts the converted data blocks into signals using the SNMP protocol by combining the blocks. The converted character string is transmitted to the target device 9 via the port 6.

The signals transmitted from the monitoring control device 8 to the target device 10 are transmitted in the same manner.

Next, a case where data is transmitted from the target device 9 to the monitoring control device 8 will be described as an example.

A signal (character string) transmitted from the target device 9 to the monitoring control device 8 is transmitted to the port 6 of the protocol conversion device 1.
Then, the protocol discriminating function 5 determines which non-SNMP protocol is used.

The character string determined by the protocol determining function 5 and the determination result information are sent to the protocol converting function 4.

The protocol conversion function 4 prepares a conversion data table for the target device 9 in the data table 100 based on the sent discrimination result information.

The protocol conversion function 4 classifies the transmitted signal based on the prepared data table 100, and refers to the corresponding SN by referring to the data table 100.
Convert to a block of signals using the MP protocol. The protocol conversion function 4 converts a signal using the non-SNMP protocol for the target device 9 into a signal using the SNMP protocol by combining the converted signal block with the identification value. The converted signal is transmitted to the monitoring control device 8 via the connection port 2.

The signal transmitted from the target device 10 to the monitoring control device 8 is transmitted in the same manner.

Next, an embodiment of the present invention will be described in detail with reference to the flowcharts of FIGS.

Here, an example in which the signal transmitted from the monitoring control device 8 is converted into a signal and a protocol by the protocol conversion device 1 and the converted signal is transmitted to the target device 9 and an example of the reverse route will be described.

The signals quoted are fictitious.

First, a signal “1.2.3.” Is transmitted from the monitoring control device 8 to the target device 9. Since the monitoring control device 8 has information that the target device 9 is connected before the protocol conversion device 1, the monitoring control device 8 sends this signal to the protocol conversion device 1.

The protocol converter 1 (step 12 in FIG. 3) that has received the signal sends the signal to the target device determining function 3 via the connection port 2 in FIG. Which device is to be sent is determined from the content of the signal (step 13).

The target device determination function 3 sends the result of the determination to the protocol conversion function 4. Upon receiving this, the protocol conversion function 4 prepares a data table of the protocol used by the device (step 14).

The target device discriminating function 3 outputs signals “1.2.
3 "to the protocol conversion function 4.

The protocol conversion function 4 outputs the signal “1.
2. . 3 “identification value”. "When". . See “
1 "," 2 ", and" 3 "are classified and compared with the prepared data table, and" 1 "is changed to" 1: "and" 1 ".
2 "to" ABC: "and" 3 "to" ON. Is converted into a signal block of a protocol used by the target device 9 (step 15).

The protocol conversion function 4 combines the blocks of the converted signal to generate a signal for the target device 9, “1: AB
C: ON. (Step 16). That is,
The protocol conversion function 4 converts the signal “1.2.3.” Using the SNMP protocol into a signal “1: ABC: ON.” Using the protocol for the target device 9.

The converted signal "1: ABC: ON."
Is transmitted to the target device 9 (step 17).

Next, from the target device 9 to the monitoring control device 8,
The signal "1: DEF: 000." Is transmitted. The transmitted signal is sent to the protocol conversion device 1 to which the target device 9 is connected.

The protocol conversion device 1 (step 18 in FIG. 4) which has received the signal sends the signal to the protocol discriminating function 5 through the port 6 in FIG. 1, and the protocol discriminating function 5 uses the signal. The protocol is determined (step 19).

The protocol discriminating function 5 sends the discrimination result to the protocol converting function 4.

The protocol conversion function 4 receiving this prepares a data table of the reported protocol (step 20).

The protocol discriminating function 5 receives the signal “1: DE
F: 000. "To the protocol conversion function 4.

The protocol conversion function 4 outputs the signal “1: DE
F: 000. With reference to the prepared data table, “1:”, “DEF:” and “000. ”, And divide it into the SNs defined in the data table 100.
Compare with the MP protocol signal and set "1:" to "
1 to “DEF:” and “4” to “000. "1"
It is converted into a block of a signal of the SNMP protocol such as "0" (step 21).

The protocol conversion function 4 combines the converted signals via the identification value to create a signal "1.4..10" using the SNMP protocol (step 2).
2). That is, the signal “
1: DEF: 000. "Is" 1.4. . It is converted to a signal of 10 ″.

The converted signal “1.4..10” is transmitted to the monitoring control device 8 via the connection port 2 (step 23).

Although the protocol converter 1 of FIG. 2 has been described via the networks 21, 22, and 23, it is needless to say that the case where the apparatus is directly connected to each apparatus without passing through the network is also included in the patent of the present application.

As described above, according to the present invention, the non-S
The feature is that the user registers (not fixed) the data table of the NMP protocol.

In the above description, the non-SNMP protocol data table registered by the protocol conversion function 4 is registered as a file. This makes it possible to convert to several types of non-SNMP protocols.

[0059]

The first effect is that a signal using the SNMP protocol is converted into a signal using the non-SNMP protocol. This allows SNMP
The monitoring / control device on the network using the protocol can monitor / control the device using the non-SNMP protocol that is not on the network.

The reason is that by converting the protocol, a device on the network using the SNMP protocol can access a device using the non-SNMP protocol.

The second effect is that since a signal using the non-SNMP protocol is converted into a signal using the SNMP protocol, a device using the non-SNMP protocol or a non-SNMP protocol is used. A device on the network can also report information such as a status change to a monitoring device on the network using SNMP.

The reason is that by converting the protocol, an apparatus using the non-SNMP protocol or an apparatus on a network using the non-SNMP protocol can access an apparatus using the SNMP protocol. Because it becomes.

The third effect is that it can be a gateway between a network using the SNMP protocol and a network using the non-SNMP protocol.

The reason is that an interface is provided between a network using one SNMP protocol and a plurality of devices using a non-SNMP protocol or devices on a network using a non-SNMP protocol, and each protocol can be converted. Because it becomes.

[Brief description of the drawings]

FIG. 1 is a detailed block diagram of a protocol conversion device of FIG.

FIG. 2 is a block diagram illustrating a configuration example of a network system using a protocol conversion method according to the present invention.

FIG. 3 is a flow chart when converting an SNMP protocol to a non-SNMP protocol according to the present invention.

FIG. 4 is a flowchart when converting a non-SNMP protocol to an SNMP protocol according to the present invention.

FIG. 5 is a configuration diagram showing a conventional technique (CMIP-SNMP gateway).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Protocol conversion device 2 Connection port 3 Target device discrimination function 4 Protocol conversion function 5 Protocol discrimination function 6, 7 Port 8 Monitoring and control device 9, 10, 11 Target device 31 OSI manager 32 CMIP-SNMP gateway 33, 34 SNMP agent

Claims (3)

[Claims] An information processing apparatus comprising: a first device that connects a first network that communicates by using an SNMP protocol and a plurality of second networks that communicates by using a non-SNMP protocol; A first identification unit for identifying which non-SNMP protocol signal is to be converted from an SNMP protocol signal received from a transmission source device connected to the first network, and a first conversion table by the first identification unit. After preparing and converting to the non-SNMP protocol signal used by the destination device connected to the second network with reference to the first conversion table,
An SNMP protocol conversion method, comprising: transmission means for transmitting the data to the destination device. 2. A method according to claim 1, further comprising a first device connected to a first network that communicates by an SNMP protocol and a plurality of second networks that communicate by a non-SNMP protocol, wherein said first device is connected to said first network. A second identification unit that identifies a non-SNMP protocol signal received from a transmission source device connected to the second network, and a second conversion table by the second identification unit. Transmitting means for preparing and converting to an SNMP protocol signal used by a destination device connected to the first network with reference to the second conversion table, and then transmitting the SNMP protocol signal to the destination device. An SNMP protocol conversion method, comprising: 3. The first device has a plurality of interfaces corresponding to each of the second networks communicating with each other by a non-SNMP protocol, and is configured to determine a transmission source from a reception signal received from the first network or the second network. 3. The SNMP protocol conversion method according to claim 1, further comprising means for identifying a transmission destination.