JP2013150230A - Transmission device and transmission system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide technique in which an IP address can be easily and quickly allocated to a transmission device to be newly installed.SOLUTION: The transmission device includes: a reception part for receiving data from one of the transmission devices which adjoin in a ring network; a transmission part for transmitting the received data to the other one of the transmission devices which adjoin in the ring network; a storage part for storing an identifier which identifies the device itself in the ring network; and a control part for controlling and monitoring data transmission/reception on the basis of the identifier. The control part, when a new device itself is installed in the ring network, acquires the identifier of the existing device which is installed in the ring network, and allocates and sets an identifier which is different from the acquired identifier of the existing device to the device itself.

Description

  The present invention relates to a transmission apparatus and a transmission system that form a ring network.

  Conventionally, when a transmission device is newly installed on a ring network, it cannot be recognized from a control monitoring device that controls and monitors the ring network until an IP (Internet Protocol) address is assigned to the new transmission device. The installer needs to perform initial settings such as IP address assignment at the installation site. However, in order to assign an IP address to a new transmission apparatus, a certain experience is required for the installer. Therefore, a technique for automatically assigning an IP address to a newly installed transmission apparatus has been developed.

  For example, a value of the own node ID is set in advance in the newly installed node device, the adjacent node ID is acquired from the adjacent node device, and the own node device and the adjacent node ID are determined based on the own node ID and the adjacent node ID. There is a technique for automatically determining an IP address of an interface of a node device (see Patent Document 1).

JP 2009-171398 A

  However, in the prior art, when assigning an IP address, the installer must search for and set a free local node ID that is not used.

  SUMMARY OF THE INVENTION In view of the above-described problems of the prior art, an object of the present invention is to provide a technique that can easily and quickly assign an IP address to a newly installed transmission apparatus.

  In order to solve the above-described problem, an aspect of a transmission apparatus illustrating the present invention includes a reception unit that receives data from one transmission apparatus adjacent on the ring network and an adjacent reception data on the ring network. A transmission unit that transmits to the other transmission device; a storage unit that stores an identifier for identifying the device in the ring network; and a control unit that controls and monitors data transmission and reception based on the identifier. When a device is newly installed on the ring network, an identifier of an existing device installed on the ring network is acquired, and an identifier different from the acquired identifier of the existing device is assigned to the own device and set.

  In addition, when the own device is newly installed on the ring network, the control unit transmits predetermined data from the transmission unit and causes the existing device to add the identifier of the existing device to the predetermined data and write it. The identifier of the existing device may be acquired.

  The control unit may determine whether the own device is an existing device or a newly installed device based on whether an identifier is stored in the storage unit.

  In addition, when the control unit receives predetermined data and assigns and sets a different identifier, the control unit may write the set different identifier in the predetermined data and transmit it to another transmission apparatus.

  In addition, the control unit may discard the predetermined data when the identifier of the own device is written in the received predetermined data.

  In addition, the control unit may discard the predetermined data after receiving the predetermined data and assigning and setting different identifiers.

  One aspect of the transmission system illustrating the present invention includes a plurality of transmission apparatuses of the present invention arranged on a ring network.

  According to the present invention, an IP address can be easily and quickly assigned to a newly installed transmission apparatus.

The block diagram which shows the structure of the transmission system which concerns on one Embodiment of this invention. The block diagram which shows the structure of the transmission apparatus of one Embodiment The block diagram which shows the structure of the control part of one Embodiment The flowchart which shows the setting operation | movement by the transmission system of one Embodiment The figure which shows an example of an address table and an ether frame

  FIG. 1 is a block diagram showing a configuration of a transmission system SYS according to an embodiment of the present invention. The transmission system SYS according to the present embodiment includes a monitoring control device 10, transmission devices 20a to 20d, and transmission paths 30a to 30d such as a single-core optical fiber. The transmission devices 20a to 20d are connected in a ring shape by transmission paths 30a to 30d to form a ring network, and the monitoring control device 10 is connected to the transmission device 20a. In the present embodiment, the monitoring control device 10 may be connected to other transmission devices 20b to 20d.

  The monitoring control device 10 is a computer that comprehensively monitors and controls the transmission device 20 installed on the transmission system SYS. The supervisory control device 10 of this embodiment outputs a control instruction from an administrator or a control program to the transmission lines 30a and 30d by broadcasting in both clockwise and counterclockwise directions via the transmission device 20a. Note that the monitoring control device 10 and the transmission devices 20a to 20d transmit and receive control instructions and data by transmitting them to the transmission lines 30a to 30d in the form of Ethernet frames. However, the transmission system SYS may use the transmission lines 30a to 30d as data lines and transmit control instructions to the transmission apparatuses 20a to 20d through a control line installed in parallel to the transmission lines 30a to 30d.

  The transmission devices 20a to 20d have a configuration as shown in FIG. 2 shows the configuration of the transmission apparatus 20a, the same applies to the transmission apparatuses 20b to 20d. The transmission device 20 a includes a control unit 21, a storage unit 22, reception units 23 a and 23 b, transmission units 24 a and 24 b, and an input / output interface (input / output IF) 25. Furthermore, the monitoring control device 10 is connected to the transmission device 20a via the input / output IF 25 so as to be able to transmit information. In addition, although the monitoring control apparatus 10 is connected to the transmission apparatus 20a, terminal devices, such as a user's computer and a server, may be connected to the input / output IF 25 of the transmission apparatuses 20a to 20d.

  The control unit 21 is a processor that comprehensively controls each unit of the transmission apparatus 20a. For example, the control unit 21 determines whether or not the Ethernet frames received by the receiving units 23a and 23b are addressed to the own device by executing a control program stored in the storage unit 22. The data is output to the input / output IF 25 and transmitted to the monitoring control device 10 and a terminal device (not shown). On the other hand, when the received Ether frame is not addressed to the own device, or when a control instruction or an ether frame of data is received from the monitoring control device 10 or a terminal device (not shown), the control unit 21 sends to the transmitting units 24a and 24b. These Ethernet frames are transmitted to the adjacent transmission apparatuses 20b and 20d.

  Further, when a new transmission device 20e is installed in the transmission system SYS as shown in FIG. 1, the control unit 21 of the present embodiment is based on a control program in order to assign an IP address (identifier) to the transmission device 20e. The address table generating unit 40, the address table reading unit 41, the address table writing unit 42, and the address setting unit 43 are operated (FIG. 3). Specific operations of the address table generation unit 40, the address table reading unit 41, the address table writing unit 42, and the address setting unit 43 will be described later.

  The storage unit 22 stores a control program, an IP address set to identify the own device, and the like. The storage unit 22 can be a general hard disk or magneto-optical disk device.

  The receivers 23a and 23b receive the Ethernet frame that is transmitted clockwise and counterclockwise through the transmission path 30. Based on the control instruction of the control unit 21, the reception units 23a and 23b output to the input / output IF 25 when addressed to the own device, and output to the transmission units 24a and 24b when addressed to other transmission devices 20.

  The transmission units 24a and 24b transmit the Ethernet frame from the reception units 23a and 23b, the control instruction from the monitoring control device 10 and the terminal device (not shown), and the Ethernet frame of data to the adjacent transmission device 20b and transmission device 20d. .

  Next, as shown in FIG. 1, the setting operation by the transmission system SYS when the transmission apparatus 20e is newly installed on the transmission line 30a will be described with reference to the flowchart of FIG. It is assumed that the configuration of the transmission device 20e is the same as that of the transmission device 20a. Moreover, although the case where the transmission apparatus 20e is newly installed on the transmission line 30a is demonstrated, the same operation | movement is performed also when installing on the other transmission lines 30b-30d. Furthermore, an IP address is set in advance for each of the monitoring control device 10 and the transmission devices 20a to 20d, and each IP address is stored in a storage unit (not shown) of the monitoring control device 10 or a storage unit 22 of each transmission device 20. ing. In the following description, the IP addresses of the monitoring control device 10 and the transmission devices 20a to 20d are, for example, “10.146.116.10”, “10.146.16.1”, “10.146.16.2”. ”,“ 10.146.16.3 ”and“ 10.146.16.4 ”.

  As described above, when the transmission device 20e is installed on the transmission line 30a and turned on by the installer, the control unit 21 of the transmission device 20e executes the control program in the storage unit 22 and initializes the transmission device 20e. To do. The control unit 21 starts processing from step S101 in order to set an IP address in the own device.

  Step S101: The address table generation unit 40 of the transmission apparatus 20e generates an address table 50 as shown in FIG. 5A in order to acquire the IP addresses of all the existing apparatuses installed on the transmission system SYS. . At the time when the address table generating unit 40 generates the address table 50, the IP address column is blank, consisting only of its own transmission device 20e.

  Step S102: The control unit 21 of the transmission apparatus 20e stores the address table 50 generated in step S101 in the data area and generates an Ethernet frame. For example, the MAC address of “FF: FF: FF: FF: FF: FF” is used in order to cause all existing apparatuses installed on the transmission system SYS to receive the Ethernet frame in which the address table 50 is stored. Are stored in the destination address area (DA), and the source address (SA) area is left blank. The TYPE area stores, for example, a value “0x08FF” to indicate that the address table 50 is stored.

  The control unit 21 of the transmission device 20e broadcasts the generated ether frame of the address table 50 in a clockwise direction and a counterclockwise direction via the transmission units 24a and 24b. In the following, the operation of the transmission apparatuses 20a to 20d based on the Ethernet frame transmitted in the clockwise direction will be described, but the operation is similarly performed for the Ethernet frame transmitted in the counterclockwise direction.

  Step S103: The receiving unit 23a of the transmission apparatus 20b receives the Ethernet frame of the address table 50 transmitted from the transmission apparatus 20e. The control unit 21 of the transmission device 20b determines that it is addressed to the own device because the MAC address of the DA area is “FF: FF: FF: FF: FF: FF”.

  Step S104: The control unit 21 of the transmission apparatus 20b confirms that the value of the TYPE area of the Ethernet frame is “0x08FF”, and the address table reading unit 41 of the transmission apparatus 20b reads the address table 50 from the data area of the Ethernet frame. Is read. At the same time, the control unit 21 of the transmission device 20b reads the IP address of the transmission device 20b stored in the storage unit 22, and determines whether the IP address of the own device is stored in the storage unit 22. When the IP address of the own device is stored, the control unit 21 proceeds to step S105 (YES side), and when the IP address of the own device is not stored, the control unit 21 proceeds to step S108 (NO side).

  Step S105: The control unit 21 of the transmission apparatus 20b determines whether or not the address table 50 read by the address table reading unit 41 includes the IP address of the own apparatus. When there is an IP address of the own device, the control unit 21 proceeds to step S109 (YES side), and when there is no IP address of the own device, the control unit 21 proceeds to step S106 (NO side).

  Step S106: The address table writing unit 42 of the transmission device 20b adds and writes the IP address of the own device to the address table 50 as shown in FIG. The address table writing unit 42 additionally writes the IP addresses to the address table 50 when the monitoring control device 10 or the like is connected to the input / output IF 25.

  Step S107: The control unit 21 of the transmission apparatus 20b stores the address table 50 in which the IP address of the own apparatus is written in the data area again, and transmits the Ethernet frame to the transmission apparatus 20c via the transmission unit 24a.

  Thereafter, the processing from step S103 to step S107 is similarly performed in each of the transmission apparatuses 20c, 20d, and 20a. After processing in the transmission apparatus 20a, the transmission apparatus 20e receives the Ethernet frame of the address table 50 shown in FIG. 5B in step S103. The control unit 21 of the transmission device 20e proceeds to step S108 (NO side) because the IP address of the own device is not yet stored in the storage unit 22 in step S104.

  Step S108: Based on the determination result of step S104, the control unit 21 of the transmission apparatus 20e determines that the Ethernet frame received in step S103 is transmitted by the own apparatus. The address setting unit 43 of the transmission device 20e is not used in the transmission system SYS based on the IP address written in the address table 50 illustrated in FIG. 5A, for example, “10.146.16.5”. Is assigned and set as the IP address of its own device. The control unit 21 of the transmission device 20e records the set IP address in the storage unit 22, and proceeds to step S106.

  Then, in step S106, the address table writing unit 42 of the transmission device 20e adds and writes the set IP address to the address table 50 as shown in FIG. 5C. In step S107, the control unit 21 of the transmission apparatus 20e transmits an Ethernet frame in which the address table 50 illustrated in FIG. 5C is stored in the data area to the transmission apparatus 20b. The control unit 21 of the transmission apparatus 20b that has received the Ethernet frame determines in step S105 that the IP address of the own apparatus already exists in the address table 50 shown in FIG. 5C, and proceeds to step S109 (YES side). To do.

  Step S109: Based on the determination result in step S105, the control unit 21 of the transmission apparatus 20b determines that the setting of the IP address for the newly installed transmission apparatus 20e is completed, and discards the Ethernet frame in the address table 50. . The transmission system SYS ends a series of setting operations.

  Thus, in this embodiment, the newly installed transmission device 20e generates the address table 50 and transmits it to the transmission system SYS, and is used in all the existing devices installed on the transmission system SYS. By acquiring an IP address, an unused IP address can be allocated easily and quickly.

  Further, since the newly installed transmission device 20e transmits the address table 50 to the transmission system SYS and the transmission devices 20a to 20d simply add the IP address of the own device to the address table 50, the transmission system SYS. An IP address can be assigned and set without imposing a load on the whole.

<< Additional items of embodiment >>
(1) In the above embodiment, the transmission system SYS transmits control instructions and data Ethernet frames transmitted and received by the transmission apparatuses 20a to 20d in the clockwise and counterclockwise directions on the transmission paths 30a to 30d such as a single-core optical fiber. Although transmitted in both directions, the present invention is not limited to this. For example, it may be a multiplexed transmission line such as an OUPSR (Optical Unidirectional Path Switched Ring) or BLSR (Bidirectional Line Switched Ring) system.

  Accordingly, in the above embodiment, the address table 50 is stored in the Ethernet frame. However, the present invention is not limited to this, and any frame such as a SONET / SDH frame can be used according to the configuration and transmission method of the transmission system SYS.

  (2) In the above embodiment, only the IP addresses of the monitoring control device 10 and the transmission devices 20a to 20d are written in the address table 50 shown in FIG. 5, but the present invention is not limited to this, and the transmission devices 20a to 20d. The IP address of a terminal device (not shown) connected to the input / output IF 25 of 20d may also be written.

  (3) In the above embodiment, the SA area of the ether frame storing the address table 50 is left blank, but the present invention is not limited to this. For example, the MAC address of the transmission device 20e may be stored in the SA area. Thereby, in step S104, the control unit 21 compares the MAC address of the SA area of the received Ethernet frame with the MAC address of the own device, and whether or not the Ether frame of the address table 50 is transmitted by the own device. This makes it possible to speed up the setting process of the transmission system SYS.

  (4) In the above embodiment, the Ethernet frame is finally discarded by the transmission device 20a and the transmission device 20b adjacent to the transmission device 20e, but the present invention is not limited to this. The transmission device 20e may discard the Ethernet frame after the IP address setting in step S108 is completed. Thereby, the discarding process by the transmission apparatus 20a and the transmission apparatus 20b adjacent to the transmission apparatus 20e can be omitted, and the setting process of the transmission system SYS can be further speeded up.

  From the above detailed description, features and advantages of the embodiments will become apparent. It is intended that the scope of the claims extend to the features and advantages of the embodiments as described above without departing from the spirit and scope of the right. Further, any person having ordinary knowledge in the technical field should be able to easily come up with any improvements and modifications, and there is no intention to limit the scope of the embodiments having the invention to those described above. It is also possible to use appropriate improvements and equivalents within the scope disclosed in.

DESCRIPTION OF SYMBOLS 10 ... Monitoring control apparatus, 20a-20e ... Transmission apparatus, 21 ... Control part, 22 ... Memory | storage part, 23a, 23b ... Reception part, 24a, 24b ... Transmission part, 25 ... Input-output IF, 30a-30d ... Transmission path, 40 ... Address table generation unit, 41 ... Address table reading unit, 42 ... Address table writing unit, 43 ... Address setting unit, SYS ... Transmission system

Claims (7)

A receiving unit for receiving data from one of the adjacent transmission devices on the ring network;
A transmission unit that transmits the received data to the other transmission device adjacent on the ring network;
A storage unit for storing an identifier for identifying the device in the ring network;
A control unit for controlling and monitoring transmission and reception of the data based on the identifier;
When the own device is newly installed on the ring network, the control unit acquires the identifier of the existing device installed on the ring network, and an identifier different from the acquired identifier of the existing device. A transmission device characterized by assigning and setting the device to its own device. The transmission apparatus according to claim 1,
When the own device is newly installed on the ring network, the control unit transmits predetermined data from the transmission unit and adds the identifier of the existing device to the predetermined data to the existing device. The transmission apparatus is characterized in that an identifier of the existing apparatus is acquired. The transmission apparatus according to claim 1 or 2,
The control unit determines whether the own device is the existing device or a newly installed device based on whether or not the identifier is stored in the storage unit. The transmission apparatus according to claim 2,
When the predetermined data is received and the different identifier is assigned and set, the control unit writes the set different identifier into the predetermined data and transmits the predetermined data to the other transmission device. . The transmission apparatus according to claim 4, wherein
The control unit discards the predetermined data when the identifier of the own device is written in the received predetermined data. The transmission apparatus according to claim 2,
The control unit receives the predetermined data, assigns and sets the different identifier, and then discards the predetermined data. A transmission system comprising a plurality of transmission apparatuses according to claim 1 arranged on a ring network.

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