WO2016203566A1

WO2016203566A1 - Communication device, message transmission/reception method and setting processing method, and message transmission/reception program and setting processing program

Info

Publication number: WO2016203566A1
Application number: PCT/JP2015/067435
Authority: WO
Inventors: 和樹濱田; 克佳高橋
Original assignee: 三菱電機株式会社
Priority date: 2015-06-17
Filing date: 2015-06-17
Publication date: 2016-12-22
Also published as: JP6223638B2; JPWO2016203566A1

Abstract

A communication device (100) according to the present invention is connected to a communication network. A storage unit (1006) stores a plurality of pairs of identifiers and setting information. A communication unit (1001) transmits a first message to the communication network to cause the first message to propagate in the communication network, and receives from the communication network a response message that is transmitted in response to the first message and that includes any of the identifiers stored in the storage unit (1006). A message generation unit (1002) acquires from the storage unit (1006) the setting information that is paired up with the identifier included in the response message and generates a second message including the acquired setting information. The communication unit (1001) transmits the second message to a transmission source of the response message via the communication network.

Description

COMMUNICATION DEVICE, MESSAGE TRANSMITTING / RECEIVING METHOD, SETTING PROCESSING METHOD, MESSAGE TRANSMITTING / RECEIVING PROGRAM, AND SETTING PROCESSING PROGRAM

The present invention relates to a communication device connected to a communication network.

Conventional technology

In a communication network including switches, routers, etc., some setting is required for devices constituting the communication network except for a very simple and small-scale example such as a home network.
More specifically, it is necessary to perform settings necessary for the device to perform communication such as setting of a virtual local area network (VLAN) and setting of an IP (Internet Protocol) address.

When building a communication network, when expanding a communication network, or when replacing a device due to a failure of the device, it is necessary to make a setting for a device newly connected to the communication network.
In general, the setting contents of each device are unique to each device.
For this reason, the setting input work may be performed manually by using a command line interface (CLI) or a user interface using a web browser.
Further, the setting input work may be performed by transferring a setting file generated in advance using an FTP (File Transfer Protocol) protocol.
The setting input operation may be performed using a macro function of the terminal software.

Unlike the construction of a communication network and the expansion of a communication network, replacement of a device due to a device failure occurs suddenly.
For this reason, in many cases, it is necessary to immediately replace the device.
In order to immediately replace a device when a failure occurs, it is necessary to always have personnel with appropriate skills for constructing a communication network.
However, such allowance increases the network operation cost.
In addition, setting work for a new device needs to be performed in a limited time, which may cause a new problem due to a setting input error or the like.

As a method for simplifying the setting input operation when exchanging network devices, for example, there is a method disclosed in Patent Document 1.
In the method of Patent Document 1, a network device having a physical port holds the physical port and setting contents of other network devices connected to the physical port in association with each other.
When another network device is disconnected from the physical port due to a failure or the like, and a new network device is connected to the physical port, the network device stores the setting contents held in association with the physical port from the physical port. Send.
The new network device that has received the setting contents performs settings according to the received setting contents.
As a result, in Patent Document 1, setting contents are input without performing manual setting for a new network device when the network device is replaced.

JP 2009-296453 A

However, in the method described in Patent Document 1, it is necessary that the network devices are directly connected to hold the physical port and the setting contents in association with each other.
Therefore, for example, in a communication network in which a general layer 2 switch that does not have the function disclosed in Patent Document 1 is interposed between network devices, the method of Patent Document 1 cannot be used.

The present invention has been made in view of the above circumstances, and even when a relay device such as a switch or a router is interposed in the communication network, the setting information is efficiently set for the communication device newly connected to the communication network. Is the main purpose.

The communication device according to the present invention is
A communication device connected to a communication network,
A storage unit for storing a plurality of pairs of identifiers and setting information;
One of the messages stored in the storage unit that is transmitted in response to the first message, wherein the first message is transmitted to the communication network, the first message is propagated in the communication network, A first communication unit that receives a response message including an identifier from the communication network;
A message generating unit that acquires setting information paired with an identifier included in the response message from the storage unit, and generates a second message including the acquired setting information;
A second communication unit configured to transmit the second message generated by the message generation unit to the transmission source of the response message via the communication network;

In the present invention, the first message is propagated in the communication network, so that a new communication device newly connected to the communication network receives the first message and further transmits a response message.
Then, the setting information paired with the identifier included in the response message is included in the second message and transmitted to the new communication device that is the transmission source of the response message, so that the setting information is transmitted to the new communication device. Is granted.
By such a procedure, in the present invention, even when a relay device such as a switch or a router is interposed in the communication network, setting information is efficiently given to the communication device newly connected to the communication network. Can do.

1 is a diagram illustrating a configuration example of a communication system according to Embodiment 1. FIG. 3 is a diagram illustrating a functional configuration example of a communication device according to Embodiment 1. FIG. FIG. 3 is a diagram showing a communication sequence at the time of replacement of the communication apparatus according to the first embodiment. FIG. 3 is a flowchart showing a processing example of the communication apparatus according to the first embodiment. FIG. 3 is a flowchart showing a processing example of the communication apparatus according to the first embodiment. The figure which shows the communication sequence at the time of replacement | exchange of the communication apparatus which concerns on Embodiment 2. FIG. FIG. 3 is a diagram illustrating a hardware configuration example of a communication device according to the first and second embodiments.

Embodiment 1 FIG.
*** Explanation of configuration ***
FIG. 1 shows a configuration example of a communication system according to the present embodiment.
In the communication system according to the present embodiment, communication devices 101 to 103 and relay devices 201 to 204 are connected to a communication network 301.
In FIG. 1, since the communication device 102 has failed, the communication device 104 is connected to the communication network 301 instead of the communication device 102.
Each of the communication devices 101 to 104 has the same function.
Specifically, the communication devices 101 to 104 have a function of transmitting / receiving a new entry confirmation message, a response message, and a setting information notification message, which will be described later.
Hereinafter, when it is not necessary to distinguish the communication devices 101 to 104, the communication devices 101 to 104 are collectively referred to as the communication device 100.
Relay devices 201 to 204 relay messages transmitted and received by communication devices 101 to 104.
The relay devices 201 to 204 are, for example, routers or switches.
When there is no need to distinguish between the relay devices 201 to 204, the relay devices 201 to 204 are collectively referred to as the relay device 200.
In addition, although the ring network is illustrated in FIG. 1, the topology of the communication network 301 is not limited to the ring network.
Note that the

communication apparatuses

101 and 103 belong to a VLAN set in the communication network 301.
The communication device 102 also belonged to the same VLAN as the communication device 101 and the communication device 103 before the failure.

Each communication device 100 exchanges setting information with another communication device 100.
Each communication device 100 stores setting information of other communication devices 100 in an internal memory or the like.
For example, the communication device 101 transmits setting information of the communication device 101 to the communication device 102 and the communication device 103.
The communication apparatus 101 receives the setting information of the communication apparatus 102 and the setting information of the communication apparatus 103, and stores the setting information of the communication apparatus 102 and the setting information of the communication apparatus 103 in a memory or the like.
Similarly, the communication device 102 transmits the setting information of the communication device 102 to the communication device 101 and the communication device 103.
In addition, the communication device 102 receives the setting information of the communication device 101 and the setting information of the communication device 103, and stores the setting information of the communication device 101 and the setting information of the communication device 103 in a memory or the like.
Similarly, the communication device 103 transmits the setting information of the communication device 103 to the communication device 101 and the communication device 102.
Further, the communication device 103 receives the setting information of the communication device 101 and the setting information of the communication device 102, and stores the setting information of the communication device 101 and the setting information of the communication device 102 in a memory or the like.
Each communication device 100 has an identifier, and stores the identifier and setting information of another communication device in a memory in pairs.
For example, the communication device 101 stores the identifier of the communication device 102 and the setting information of the communication device 102 in a pair in the memory, and stores the pair of the identifier of the communication device 103 and the setting information in the communication device 103 in the memory.
The setting information includes settings essential for the communication device 100 to communicate on the communication network 301, such as VLAN settings and IP address settings, as well as the exchanged communication device (the communication device 104 in FIG. 1). All the information that should be set in Applicable) is included.

Any method for exchanging the setting information between the communication apparatuses 100 may be used.
It is preferable to use a file transfer protocol such as FTP or SFTP (SSH File Transfer Protocol), but the present invention is not limited to this, and any method can be used.

It is desirable that an identifier unique to the communication device 100 can be confirmed even in a non-energized state after the communication device 100 has failed.
It is desirable that the identifier can be confirmed and changed by a person who does not have knowledge about network design.
For example, a method in which a physical switch typified by a rotary switch or a multi-bit DIP switch (Dual In-line Package switch) is mounted on the communication apparatus 100 and used is suitable.

In the present embodiment, as shown in the example of FIG. 1, since a failure has occurred in the communication device 102, the communication device 102 is disconnected from the communication network 301, and instead the communication device 104 is connected to the communication network 301. And
Although details will be described later, in the present embodiment, as shown in FIG. 3, the communication apparatus 101 repeatedly broadcasts a new entry confirmation message (example of a first message) at a constant cycle to the communication network 301 for communication. A new entry confirmation message is propagated in the network 301.
Similarly, the communication device 103 broadcasts a new entry confirmation message.
Since the new entry confirmation message is broadcast to the communication network 301, the communication apparatus newly connected to the communication network 301 can also receive the new entry confirmation message.
Therefore, when a new communication device 104 connects to the communication network 301, the communication device 104 receives a new entry confirmation message.
The communication device 104 transmits a response message to the communication network 301 in response to the newly received new entry confirmation message.
The communication device 104 receives the new entry confirmation message from the communication device 101 and the new entry confirmation message from the communication device 103. In this embodiment, the communication device 104 receives the new entry confirmation message from the communication device 101. An example of receiving a response message to the new entry confirmation message from the communication apparatus 101 first will be described.
The response message includes the identifier of the communication device 104.
The identifier of the communication device 104 needs to be the same as the identifier of the communication device 102 that has failed.
That is, the identifier of the communication device 104 is stored in the memory of the communication device 101.
The communication device 101 receives the response message from the communication device 104.
Then, the communication device 101 reads the setting information paired with the identifier included in the response message from the communication device 104 from the memory, and a setting information notification message (second message example) including the read setting information. Is transmitted to the communication device 104.
The communication device 104 receives the setting information notification message and performs setting according to the setting information included in the received setting information notification message.

FIG. 2 shows a functional configuration example of the communication apparatus 100 according to the present embodiment.

The communication unit 1001 communicates messages.
In the following, the operation of the communication unit 1001 of the communication device (for example, the communication device 101) that has already entered the communication network 301 and the communication unit 1001 of the communication device (for example, the communication device 104) that newly enters the communication network 301. The explanation is divided into the operations.
(1) When the communication apparatus 100 has already entered the communication network 301 If the communication apparatus 100 has already entered the communication network 301 (for example, the communication apparatus 101), the communication unit 1001 newly enters the communication network 301. A confirmation message is broadcast, and a new entry confirmation message is propagated in the communication network 301 (operates as a first communication unit).
In addition, the communication unit 1001 receives a response message transmitted in response to the new entry confirmation message transmitted by the own device from the communication network 301 (operates as a first communication unit).
The communication unit 1001 does not receive a response message transmitted in response to a new entry confirmation message transmitted by a communication device other than its own device.
Furthermore, the communication unit 1001 transmits the setting information notification message to the response message transmission source (communication device 104) via the communication network 301 (operates as a second communication unit).
(2) When the communication device 100 newly enters the communication network 301 If the communication device 100 is a communication device (for example, the communication device 104) that newly enters the communication network 301, the communication unit 1001 The new entry confirmation message is received (operates as the first communication unit).
The communication unit 1001 transmits a response message to the communication device (for example, the communication device 101) that is the transmission source of the new entry confirmation message (operates as a second communication unit).
The communication unit 1001 receives a setting information notification message from the communication network 301 (operates as a second communication unit).

The message generation unit 1002 generates a message.
If the communication device 100 is the communication device 101, the message generation unit 1002 generates a new entry confirmation message.
In addition, when the communication unit 1001 receives a response message, the message generation unit 1002 acquires setting information that is paired with an identifier included in the response message from the storage unit 1006 described later. Generate included setting information notification message.
Also, if the communication device 100 is the communication device 104, when the communication unit 1001 receives a new entry confirmation message, the message generation unit 1002 generates a response message.

The message analysis unit 1003 analyzes the message received by the communication unit 1001 and determines the type of message.

The setting processing unit 1004 performs setting processing using setting information.
If the communication device 100 is the communication device 104, the setting processing unit 1004 performs setting processing using the setting information included in the setting information notification message when the communication unit 1001 receives the setting information notification message.

The control unit 1005 performs overall control of the communication device 100.

The storage unit 1006 stores a plurality of pairs of identifiers and setting information.
As described above, if the communication device 100 is the communication device 101, the storage unit 1006 stores a pair of the identifier of the communication device 102 and the setting information and a pair of the identifier of the communication device 103 and the setting information.

*** Explanation of operation ***
Next, an operation example of the communication apparatus according to the present embodiment will be described.
FIG. 3 shows a communication sequence when exchanging communication devices connected to the communication network 301.
More specifically, FIG. 3 shows a communication sequence between the communication apparatus 101 and the communication apparatus 104 when the communication apparatus 104 is connected to the communication network 301 instead of the communication apparatus 102 in which a failure has occurred.
FIG. 4 is a flowchart illustrating an operation example of the communication apparatus 101.
FIG. 5 is a flowchart showing an operation example of the communication apparatus 104.
The processing procedure shown in FIG. 4 corresponds to an example of a message transmission / reception method and a message transmission / reception program.
5 corresponds to an example of a setting processing method and a setting processing program.
In the present embodiment, the same identifier as that of the communication device 102 is assigned to the communication device 104.

The communication apparatus 101 repeatedly transmits a new entry confirmation message at regular intervals (S01 in FIG. 3 and S11 in FIG. 4) (first communication process).
In the communication apparatus 101, when the port connected to the relay apparatus 201 is an access port, the message generation unit 1002 generates a new entry confirmation message without a VLAN tag.
That is, when the communication interface connected to the communication network 301 is set to perform communication without a VLAN tag, the communication apparatus 101 transmits a new entry confirmation message without a VLAN tag.
When the communication interface is set to perform communication with a VLAN tag, the communication apparatus 101 transmits a new entry confirmation message to which a VLAN tag including a VID set to the communication interface is added.
In addition, when a new entry confirmation message without a VLAN tag is transmitted, the communication apparatus 101 receives a response message without a VLAN tag.
On the other hand, when a new entry confirmation message with a VLAN tag is transmitted, the communication apparatus 101 receives a response message with a VLAN tag including a VID.
In the communication apparatus 101, the communication unit 1001 transmits a new entry confirmation message to the communication network 301.

When the new entry confirmation message reaches the communication device 104 via the relay device 201 and the relay device 202, the communication unit 1001 of the communication device 104 receives the new entry confirmation message (S21 in FIG. 5) (first communication processing).
Then, the communication unit 1001 transfers the received message to the message analysis unit 1003, and the message analysis unit 1003 determines the type of the message (S22 in FIG. 5).
Here, since the received message is a new entry confirmation message, the message analysis unit 1003 determines the VLAN method used for communication with the transmission source (communication device 101) of the new entry confirmation message from the new entry confirmation message. (S24 in FIG. 5).
When the VLAN tag is included in the new entry confirmation message, the message analysis unit 1003 determines that the tag VLAN is used for communication with the transmission source of the new entry confirmation message, and performs access port setting.
The VID at this time is provisional, and any method may be used for determining the VID.
When the VLAN tag is not included in the new entry confirmation message, the message analysis unit 1003 determines that the port VLAN is used for communication with the transmission source of the new entry confirmation message.
When a VLAN tag is used for communication with the transmission source of the new entry confirmation message, the setting processing unit 1004 adds the VID (VLAN ID) included in the new entry confirmation message to the port that received the new entry confirmation message. The member VLAN is set (S02 in FIG. 3).
In the new entry confirmation message, a field for storing the VID and a field indicating the presence / absence of a tag may be provided.
In this case, regardless of the presence / absence of the VLAN tag in the new entry confirmation message and the contents of the VLAN tag when there is a VLAN tag, the setting processing unit 1004 determines the corresponding port by the VID and tag presence / absence fields in the new entry confirmation message. Set the VLAN to

Next, in the communication device 104, the message generation unit 1002 generates a response message (S25 in FIG. 5) (message generation processing).
The message generation unit 1002 includes the identifier of the communication device 104 (= identifier of the communication device 102) in the response message.
When the VLAN method used for communication with the communication apparatus 101 is a tag VLAN, the message generation unit 1002 generates a response message with a VLAN tag (VID).
In the case of a port VLAN, the message generation unit 1002 generates a response message to which no VLAN tag is attached.

Next, the communication unit 1001 transmits a response message to the communication device 100 that is the transmission source of the new entry confirmation message (S03 in FIG. 3 and S26 in FIG. 5).
The response message is transmitted by unicast.
Although it is possible to send the response message as multicast or broadcast, both the communication device 101 and the communication device 103 receive the response message, and are set in the communication device 104 from both the communication device 101 and the communication device 103. An information notification message is sent.
In the communication device 104, processing for discarding one of the setting information notification messages transmitted from both the communication device 101 and the communication device 103 occurs.
In order to avoid such duplicate transmission of the setting information notification message and the discarding processing of the setting information notification message in the communication device 104, the communication device 104 preferably transmits the response message by unicast.

In the communication apparatus 101, the communication unit 1001 receives the response message (S03 in FIG. 3 and S12 in FIG. 4) (first communication process).
The communication unit 1001 transfers the received response message to the message analysis unit 1003.
The message analysis unit 1003 determines that a response message has been received (S13 in FIG. 4).
The message analysis unit 1003 transfers the response message to the message generation unit 1002.
The message generation unit 1002 extracts the identifier of the communication device 104 from the response message (S15 in FIG. 4).
Furthermore, the message generation unit 1002 reads setting information corresponding to the identifier extracted from the response message from the storage unit 1006 (S16 in FIG. 4) (message generation processing).
As described above, since the identifier of the communication device 104 is the same as the identifier of the communication device 102, the storage unit 1006 stores the identifier of the communication device 104 together with the setting information.
Then, the message generation unit 1002 generates a setting information notification message including the setting information read from the storage unit 1006 (S17 in FIG. 4) (message generation processing).
Note that the message generation unit 1002 does not generate the setting information notification message in the IP packet format, but generates an Ethernet (registered trademark) packet format.
More specifically, the message generation unit 1002. Setting information is stored in the payload portion of the Ethernet (registered trademark) packet.
If the VLAN method used for communication with the communication device 104 is a tag VLAN, the message generation unit 1002 includes the VLAN tag (VID) in the setting information notification message.

The message generation unit 1002 transfers the generated setting information notification message to the communication unit 1001.
The communication unit 1001 transmits a setting information notification message from the communication network 301 to the transmission source (communication device 104) of the response message (S04 in FIG. 3 and S18 in FIG. 4) (second communication process).

The communication device 104 receives the setting information notification message from the communication network 301 (S04 in FIG. 3 and S21 in FIG. 5) (second communication process).
The message analysis unit 1003 determines that the setting information notification message has been received (S22 in FIG. 5).
The message analysis unit 1003 transfers the setting information notification message to the setting processing unit 1004.
The setting processing unit 1004 extracts setting information from the setting information notification message (S27 in FIG. 5).
Then, the setting processing unit 1004 performs setting processing according to the setting information (S05 in FIG. 3 and S28 in FIG. 5) (setting processing).
After the setting processing by the setting processing unit 1004 is performed, the communication device 104 performs the operation illustrated in FIG.

When the communication device 101 receives a message other than the response message, the control unit 1005 performs processing according to the type of the received message (S14 in FIG. 4).
When the communication device 104 receives a message other than the new entry confirmation message and the setting information notification message, the communication unit 1001 discards the received message.

In the above description, transmission / reception of messages between the communication device 101 and the communication device 104 has been described.
In communication network 301 according to the present embodiment, communication apparatus 103 similarly transmits new entry confirmation messages at regular intervals.
For this reason, the communication device 104 receives a new entry confirmation message from the communication device 101 and a new entry confirmation message from the communication device 103.
The communication device 104 transmits a response message to the transmission source of the new entry confirmation message received earlier, discards the new entry confirmation message received later, and transmits a response message to the transmission source of the new entry confirmation message received later. do not do.
In addition, the new entry confirmation message transmitted from the communication apparatus 103 reaches the communication apparatus 101, but the communication apparatus 101 discards the new entry confirmation message from the communication apparatus 103.

*** Explanation of the effect of the embodiment ***
As described above, according to this embodiment, when a failure occurs in a communication device and a new communication device is connected to the communication network, it becomes possible to automatically set a new communication device. .
In the present embodiment, a new communication device can be automatically set even in a communication network in which a relay device is interposed.

Embodiment 2. FIG.
In the first embodiment, setting information is given to a new communication device by Ethernet (registered trademark) communication.
In this embodiment, an example will be described in which setting information is given to a new communication device by IP communication.

A configuration example of a communication system according to the present embodiment is as shown in FIG.
An example of the functional configuration of the communication apparatus 100 is also as shown in FIG.

An example of a communication sequence in the present embodiment is shown in FIG.
Also in the example of FIG. 6, it is assumed that the communication device 104 is newly connected to the communication network 301 instead of the communication device 102 in which the failure has occurred.
Further, the identifier of the communication device 104 is the same as the identifier of the communication device 102.

In FIG. 6, the process is the same as in the first embodiment until the communication apparatus 104 transmits a response message in response to the reception of the new entry confirmation message from the communication apparatus 101.
When receiving the response message, the communication apparatus 101 designates an IP address used for communication of the setting information notification message with the communication apparatus 104 prior to transmission of the setting information notification message.
Then, the communication device 101 transmits an IP address notification message (example of the third message) including the designated IP address to the communication device 104 (S30).
The message generation unit 1002 of the communication apparatus 101 performs IP address designation and IP address notification message generation.
Note that the message generation unit 1002 can specify the IP address used by the communication apparatus 102 before the failure as the IP address used for communication with the communication apparatus 104.
Further, the message generation unit 1002 may specify an IP address used exclusively for communication of the setting information notification message.

The communication device 104 sets the IP address notified by the IP address notification message (S31), and receives the setting information notification message from the communication device 101 by IP communication (S32).
The communication device 104 receives a setting information notification message from the communication device 101 by IP communication using a file transfer protocol represented by, for example, FTP or SFTP.
The communication device 104 may use any transfer method by IP communication other than FTP and SFTP.

As described above, according to the present embodiment, when a failure occurs in a communication device and the new communication device is connected to the communication network, the setting of the new communication device is based on IP-based file transfer such as FTP or SFTP. It can be realized using a protocol.
These file transfer protocols are functions provided as standard in many communication apparatuses, and the present embodiment makes it possible to realize functions equivalent to those in the first embodiment more easily than in the first embodiment. It becomes possible.

Also, file transfer protocols such as FTP and SFTP are protocols that operate on TCP (Transmission Control Protocol) / IP, and it is possible to use an arrival confirmation function based on the TCP / IP function.
Therefore, in the present embodiment, a more reliable setting process than that in the first embodiment can be realized more easily than in the first embodiment.

Although the embodiments of the present invention have been described above, these two embodiments may be combined and implemented.
Alternatively, one of these two embodiments may be partially implemented.
Alternatively, these two embodiments may be partially combined.
In addition, this invention is not limited to these embodiment, A various change is possible as needed.

In the first and second embodiments, the example in which the relay device 200 is included in the communication network has been described. However, in the communication network in which the relay device 200 is not included, the communication device 101 and the communication device 104 are the first and second embodiments. You may make it perform the exchange of the message demonstrated by (1).

*** Explanation of hardware configuration ***
Finally, a hardware configuration example of the communication apparatus 100 will be described with reference to FIG.
The communication device 100 is a computer.
The communication device 100 includes hardware such as a processor 901, an auxiliary storage device 902, a memory 903, and a network interface 904.
The processor 901 is connected to other hardware via the signal line 910, and controls these other hardware.

The processor 901 is an IC (Integrated Circuit) that performs processing.
The processor 901 is, for example, a CPU (Central Processing Unit), a DSP (Digital Signal Processor), or a GPU (Graphics Processing Unit).
The auxiliary storage device 902 is, for example, a ROM (Read Only Memory), a flash memory, or an HDD (Hard Disk Drive).
The memory 903 is, for example, a RAM (Random Access Memory).
The storage unit 1006 illustrated in FIG. 2 is realized by the auxiliary storage device 902 or the memory 903.
The network interface 904 includes a receiver 9041 that receives data and a transmitter 9042 that transmits data.
The network interface 904 is, for example, a communication chip or a NIC (Network Interface Card).

The auxiliary storage device 902 includes a communication unit 1001, a message generation unit 1002, a message analysis unit 1003, a setting processing unit 1004, and a control unit 1005 (hereinafter, communication unit 1001, message generation unit 1002, message analysis unit 1003, A program for realizing the function of the setting processing unit 1004 and the control unit 1005 is collectively described as “unit” is stored.
This program is loaded into the memory 903, read into the processor 901, and executed by the processor 901.
Further, the auxiliary storage device 902 may store an OS (Operating System).
When the OS is stored in the auxiliary storage device 902, at least a part of the OS is loaded into the memory 903, and the processor 901 executes the program that realizes the function of “unit” while executing the OS.
Note that the OS may not be stored in the auxiliary storage device 902.
In FIG. 7, one processor 901 is illustrated, but the communication apparatus 100 may include a plurality of processors 901.
A plurality of processors 901 may execute a program for realizing the function of “unit” in cooperation with each other.
In addition, information, data, signal values, and variable values indicating the processing results of “unit” are stored in the memory 903, the auxiliary storage device 902, or a register or cache memory in the processor 901.

The “part” may be provided as “circuitry”.
Further, “part” may be read as “circuit”, “process”, “procedure”, or “processing”.
“Circuit” and “Circuitry” include not only the processor 901 but also other types of processing circuits such as a logic IC or GA (Gate Array) or ASIC (Application Specific Integrated Circuit) or FPGA (Field-Programmable Gate Array). It is a concept to include.

100 communication device, 101 communication device, 102 communication device, 103 communication device, 104 communication device, 201 relay device, 202 relay device, 203 relay device, 204 relay device, 301 communication network, 1001 communication unit, 1002 message generation unit, 1003 Message analysis unit, 1004 setting processing unit, 1005 control unit, 1006 storage unit.

Claims

A communication device connected to a communication network,
A storage unit for storing a plurality of pairs of identifiers and setting information;
One of the messages stored in the storage unit that is transmitted in response to the first message, wherein the first message is transmitted to the communication network, the first message is propagated in the communication network, A first communication unit that receives a response message including an identifier from the communication network;
A message generating unit that acquires setting information paired with an identifier included in the response message from the storage unit, and generates a second message including the acquired setting information;
A communication apparatus comprising: a second communication unit that transmits the second message generated by the message generation unit to the transmission source of the response message via the communication network.
The first communication unit is
Communication newly connected to the communication network when the first message directed to the communication device newly connected to the communication network is repeatedly transmitted and the communication device is newly connected to the communication network The communication apparatus according to claim 1, wherein the response message transmitted from the apparatus in response to the first message is received.
The first communication unit is
When the communication interface connected to the communication network is set to perform communication without a VLAN (Virtual Local Area Network) tag, the first message without a VLAN tag is sent,
When the communication interface is set to perform communication with a VLAN tag, the first message to which the VID set in the communication interface is assigned is transmitted.
When the first message without the VLAN tag is transmitted, the response message without the VLAN tag is received;
The communication apparatus according to claim 1, wherein when the first message to which the VID is assigned is transmitted, the response message to which a VLAN tag including the VID is assigned is received.
The message generator is
When the response message is received by the first communication unit, a third message that designates an IP (Internet Protocol) address used for communication with the transmission source of the response message and notifies the designated IP address Produces
The second communication unit is
The third message generated by the message generator is transmitted to the transmission source of the response message via the communication network, and the IP communication using the IP address specified by the message generator is used to transmit the third message. The communication apparatus according to claim 1, wherein a second message is transmitted to a transmission source of the response message.
A communication device,
A first communication unit for receiving a first message from a communication network;
A message generator that generates a response message that includes an identifier of the communication device in response to the first message;
The response message is transmitted to the transmission source of the first message via the communication network, and the second message including setting information transmitted from the transmission source of the first message is transmitted from the communication network. A second communication unit for receiving;
A communication apparatus comprising: a setting processing unit that performs a setting process using the setting information included in the second message received by the second communication unit.
The first communication unit is
The communication device according to claim 5, wherein the first message is received when the communication device newly connects to the communication network.
The first communication unit is
Receiving the first message including a VID of a VLAN (Virtual Local Area Network) to which the transmission source of the first message belongs;
The message generator is
The communication apparatus according to claim 5, wherein the response message including the VID is generated.
The second communication unit is
Receiving a third message transmitted from the sender of the first message in response to the response message and notifying an IP (Internet Protocol) address used for communication with the sender of the first message; The communication apparatus according to claim 5, wherein the second message is received by IP communication using the IP address notified by the third message.
A communication device connected to a communication network and having a storage device that stores a plurality of identifier / setting information pairs,
Any one of the storage devices stored in the storage device that transmits a first message to the communication network, propagates the first message in the communication network, and is transmitted in response to the first message. Receiving a response message including an identifier from the communication network;
Acquiring setting information paired with an identifier included in the response message from the storage device, and generating a second message including the acquired setting information;
A message transmission / reception method for transmitting the second message to the transmission source of the response message via the communication network.
The communication device
Receiving a first message from a communication network;
Generating a response message including an identifier of the communication device in response to the first message;
The response message is transmitted to the transmission source of the first message via the communication network, and the second message including setting information transmitted from the transmission source of the first message is transmitted from the communication network. Receive
A setting processing method for performing setting processing using the setting information included in the second message.
A communication device connected to a communication network and having a storage device that stores a plurality of identifier and setting information pairs,
Any one of the storage devices stored in the storage device that transmits a first message to the communication network, propagates the first message in the communication network, and is transmitted in response to the first message. A first communication process for receiving a response message including an identifier from the communication network;
Message generation processing for acquiring setting information paired with an identifier included in the response message from the storage device, and generating a second message including the acquired setting information;
A message transmission / reception program for causing a transmission source of the response message to execute a second communication process for transmitting the second message generated by the message generation process via the communication network.
In communication equipment,
A first communication process for receiving a first message from a communication network;
A message generation process for generating a response message including an identifier of the communication device in response to the first message;
The response message is transmitted to the transmission source of the first message via the communication network, and the second message including setting information transmitted from the transmission source of the first message is transmitted from the communication network. A second communication process to receive;
A setting process program for executing the setting process using the setting information included in the second message received by the second communication process.