Optical transmission device, optical transmission method, and optical transmission program

Abstract

To provide an optical transmission device, an optical transmission method, and an optical transmission program that can automatically acquire setting information from a remote opposing optical transmission device and re-register the information.SOLUTION: An optical transmission device (300) includes: an optical signal transmitting and receiving unit (304) that enables bidirectional communication of optical signals with an optical transmission device (306) that opposes the own device (300) via a communication line and manages setting information of the own device (300); a setting information management unit (302) that manages the setting information of the own device (300) and the setting information of the opposing optical transmission device (306); and an integrated management unit (303) that, upon detecting initialization of the own device (300), causes the optical signal transmitting and receiving unit (304) to sequentially execute a plurality of initial settings prepared in advance to select an initial setting that allows reception of optical signals from the opposing optical transmission device (306), and configures the own device (300) with the setting information of the own device (300) received from the opposing optical transmission device (306) using the selected initial setting.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an optical transmission device, an optical transmission method, and an optical transmission program. [Background technology]

[0002] A wavelength division multiplexing system is a communication system that multiplexes and transmits multiple optical signals with different wavelengths over a single optical fiber, realizing a high-speed, large-capacity communication line. The optical transmission equipment installed in each station in the wavelength division multiplexing system can establish an optical communication line with another optical transmission equipment by registering setting information such as wavelength information.

[0003] When such optical transmission equipment breaks down and needs to be replaced, it is necessary to acquire the configuration information of the previous optical transmission equipment and re-register it in the replaced equipment. Conventional optical transmission equipment employs a method for quickly and automatically restoring the replaced equipment by re-registering it from a monitoring and control device located near the replaced equipment.

[0004] To achieve automatic recovery of conventional optical transmission equipment, the supervisory control device in the wavelength division multiplexing system must back up the settings of the optical transmission equipment and autonomously reconfigure the backed-up setting information when the equipment is replaced. To address this issue, conventional wavelength division multiplexing systems have unified the supervisory control device and optical transmission equipment from a single vendor and unified the interface used for supervisory control.

[0005] However, in recent years, common standards for controlling optical transmission equipment, such as OpenROADM and OpenConfig, have enabled the multi-vendor use of optical transmission equipment and supervisory control devices and the diversification of installation locations. However, no standards have been established for automatic recovery, etc. Furthermore, if a supervisory control device is not installed nearby, or if remote connection to a remote site is not possible due to a failure in the equipment or wide-area network line, the replaced equipment cannot be re-registered from a supervisory control device located nearby. Patent Document 1 discloses an invention for a communication device that, by preparing only a dedicated external storage medium storing an instruction file at each site, enables even a person without specialized knowledge or skills to obtain diagnostic information and restart the communication device installed at the site simply by inserting the external storage medium when remote connection to the remote site is not possible due to a failure in the equipment or wide-area network line. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-161198 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the technique described in Patent Document 1 requires a local worker to manually register the optical transmission device after it has been replaced, which poses a problem in that it takes time to restore the system.

[0008] The present disclosure aims to provide an optical transmission device, an optical transmission method, and an optical transmission program that are capable of automatically acquiring and re-registering setting information from a remotely located opposing optical transmission device. [Means for solving the problem]

[0009] The optical transmission device disclosed herein includes an optical signal transceiver that realizes bidirectional communication using optical signal overhead between itself and an optical transmission device that faces itself via a communication line and manages the setting information of the itself; a setting information management unit that manages the setting information of the itself and the setting information of the opposing optical transmission device; and an integrated management unit that, when detecting initialization of the itself, causes the optical signal transceiver to sequentially execute a plurality of pre-prepared initial settings to select an initial setting that allows reception of an optical signal from the opposing optical transmission device, and configures the itself with the setting information of its own device received from the opposing optical transmission device using the selected initial setting.

[0010] The optical transmission method disclosed herein is an optical transmission method executed by a computer, and includes the steps of: detecting the initialization of a local device; when realizing two-way communication using optical signal overhead between an optical transmission device that faces the local device via a communication line and that manages the setting information of the local device, sequentially executing a plurality of pre-prepared initial settings to select an initial setting that can receive an optical signal from the opposing optical transmission device; and configuring the local device with the setting information of the local device received from the opposing optical transmission device using the selected initial setting.

[0011] The optical transmission program disclosed herein causes a computer to execute the following steps: detecting the initialization of its own device; when realizing two-way communication using optical signal overhead between the optical transmission device that faces the own device via a communication line and that manages the setting information of the own device, sequentially executing multiple pre-prepared initial settings to select an initial setting that can receive an optical signal from the opposing optical transmission device; and configuring the own device with the setting information of the own device received from the opposing optical transmission device using the selected initial setting. [Effects of the Invention]

[0012] According to the present disclosure, it is possible to provide an optical transmission device, an optical transmission method, and an optical transmission program that are capable of automatically acquiring and re-registering setting information from a remotely located opposing optical transmission device. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a schematic diagram illustrating an example of the configuration of a wavelength division multiplexing system including an optical transmission device that acquires setting information by communication from a remote opposing optical transmission device via a communication line according to a first embodiment. [Figure 2] 3 is a block diagram illustrating an example of a software configuration of an optical transmission device including a mechanism for managing setting information of a remote optical transmission device according to the first embodiment. FIG. [Figure 3] 1 is a block diagram illustrating an example of a hardware configuration of an optical transmission device according to a first embodiment. [Figure 4] 10 is a schematic diagram illustrating an example of the operation of the function of the optical transmission device according to the first and third embodiments to acquire setting information from a remote optical transmission device and re-register it. FIG. [Figure 5] 10 is a schematic diagram illustrating an example of the operation of the function of the optical transmission devices according to the second and third embodiments to acquire and re-register setting information from a remote optical transmission device. FIG. [Figure 6] FIG. 11 is a schematic diagram showing a case where there are three optical transmission devices according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, optical transmission devices according to embodiments will be described with reference to the drawings. The following embodiments are merely examples, and the embodiments can be appropriately combined and modified.

[0015] First Embodiment 1 is a schematic diagram showing an example of the configuration of a wavelength division multiplexing system 1 according to a first embodiment, including an optical transmission device (A) 100 and an optical transmission device (B) 102 that acquire setting information by communication from a remote opposing optical transmission device via a communication line. The wavelength division multiplexing system 1 shown in FIG. 1 includes the optical transmission device (A) 100 that transmits and receives an optical signal 111 with an optical communication device (A) 109, the optical transmission device (B) 102 that transmits and receives an optical signal 112 with an optical communication device (B) 110, and an integrated monitoring server 103 and a construction terminal 104 that configure the optical transmission device (A) 100 or the optical transmission device (B) 102. The optical transmission device (A) 100 and the optical transmission device (B) 102 transmit and receive an optical signal 101 between themselves.

[0016] In the wavelength division multiplexing system 1, to establish an optical line between the optical communication device (A) 109 and the optical communication device (B) 110, setting information for the optical signals 101 and 111 is registered in the optical transmission device (A) 100 using the integrated monitoring server 103 or the construction terminal 104. The registered setting information is stored in a non-volatile storage area of ​​the optical transmission device (A) 100 as setting information 105 of the optical transmission device (A) 100. Setting information for the optical signals 101 and 112 is similarly registered in the optical transmission device (B) 102, and stored in a non-volatile storage area of ​​the optical transmission device (B) 102 as setting information 107 of the optical transmission device (B) 102. By registering this setting information, an optical line between the optical communication device (A) 109 and the optical communication device (B) 110 can be established. In addition, the optical transmission device (A) 100 stores setting information 106 of the optical transmission device (B) 102 obtained by transmitting and receiving the optical signal 101, and the optical transmission device (B) 102 stores setting information 108 of the optical transmission device (A) 100 obtained by transmitting and receiving the optical signal 101.

[0017] 2 is a block diagram illustrating an example of a software configuration of an optical transmission device 200 including a mechanism for managing setting information of a remote optical transmission device according to the first embodiment. The optical transmission device 200 illustrates a mechanism for managing setting information of a remote optical transmission device in the optical transmission device (A) 100 or the optical transmission device (B) 102. As illustrated in FIG. 3, the optical transmission device 200 is configured by a computer including a central processing unit (CPU) 21, a main memory 22, an input / output interface (I / O interface) 23, and a storage unit 24, which are arithmetic elements (processors), each connected to a system bus 25. The CPU 21 is an integrated circuit (IC) that performs arithmetic processing. In addition to the CPU 21, other arithmetic elements such as a digital signal processor (DSP), a graphics processing unit (GPU), a network processor, or a field programmable gate array (FPGA) may also be used. By executing the optical transmission program according to the first embodiment, the CPU 21 functions as a function of encrypting and managing the setting information of the optical transmission device 200 using the encryption key 205, a function of registering the setting information from the integrated monitoring server 103, the construction terminal 104, or the like via the UI unit 201, a function of transmitting its own setting information to a remote optical transmission device, and a function of receiving the setting information transmitted from a remote optical transmission device. As a result, by executing the optical transmission program, the CPU functions as a setting information management unit 202, an integrated management unit 203, and an optical signal transmission / reception unit 204. The optical transmission program is provided, for example, as a recording medium on which it is recorded.

[0018] The main memory 22 is configured by a volatile storage device such as a RAM (Random Access Memory) or a non-volatile storage device such as a ROM (Read Only Memory). The storage unit 24 is configured by a non-volatile storage device such as an HDD (Hard Disk Drive) or a flash memory.

[0019] The I / O interface 23 is a port to which the opposing optical transmission device (B) 102, optical communication device (A) 109, etc. are connected.

[0020] The setting information management unit 202 encrypts and manages the setting information of the optical transmission device 200 using an encryption key 205. This encryption key is a unique value owned by the vendor of the optical transmission device 200, and is assumed to be consistent within the vendor for each optical transmission device 200. This encrypted setting information is registered in the optical signal transceiver 204 and transmitted to the opposing optical transmission device using the overhead portion of the optical signal. In the opposing optical transmission device, the setting information management unit 202 receives the setting information from the overhead portion of the optical signal via the optical signal transceiver 204 and stores this setting information in a volatile area within the optical transmission device.

[0021] The optical transmission device 200 registers setting information in the integrated management unit 203 via the UI unit 201 from the integrated monitoring server 103, the construction terminal 104, or the like. Upon receiving the registration request, the integrated management unit 203 sets wavelength information and the like in the optical signal transmitting / receiving unit 204 as necessary, and adjusts device parameters of the optical transmission device 200 so that the optical signal 101 can be transmitted and received with the opposing optical transmission device. The integrated management unit 203 also notifies the setting information management unit 202 of updated setting information. Upon receiving the updated setting information, the setting information management unit 202 updates and encrypts the setting information and retransmits it to the opposing optical transmission device.

[0022] With the above configuration, the optical transmission device 200 and the opposing optical transmission device store each other's configuration information while concealing the information for decrypting the configuration information within their own devices. This makes it possible to protect the optical transmission device 200 and the opposing optical transmission device from threats such as reverse engineering based on the configuration information. The optical transmission device 200 may be a PC, a server, or a dedicated device created for security evaluation. The optical transmission device 200 may also be configured with a processing circuit.

[0023] The encryption of the setting information and the method for realizing bidirectional communication between optical transmission devices are not specified in this disclosure. As long as the optical transmission devices can communicate with each other using overhead areas, communication conforming to a standard such as a general Optical Transport Network may be used, and the optical transmission devices do not need to have the same encryption method.

[0024] Next, an automatic recovery operation at the initial startup of the optical transmission device 300 according to the first embodiment will be described with reference to Fig. 4. The optical transmission devices 300 and 306 in Fig. 4 represent mechanisms for managing the automatic recovery operation at the initial startup of the optical transmission device (A) 100 or the optical transmission device (B) 102.

[0025] First, when the optical transmission device 300 is started up, if the startup control unit 301 detects that the optical transmission device 300 is in an initialized state, the startup control unit 301 requests the optical signal transmitting / receiving unit 304 to perform (1) initial adjustment of the optical signal as step 1 for initial startup via the integrated control unit 303. The initialized state of the optical transmission device 300 is detected, for example, when the startup control unit 301 reads the setting information of the optical transmission device 300 managed by the setting information control unit 302 at the time of startup of the optical transmission device 300 and finds that the setting information is not present.

[0026] Upon receiving a request for (2) initial adjustment of the optical signal from the integrated management unit 303, the optical signal transceiver 304 sets Pattern 1, which is one of multiple pre-prepared initial settings, for configurable parameters such as the center wavelength, bandwidth, and transmission rate of the received optical signal in order to receive optical signals from the optical signal transceiver 310 of the optical transmission device 300 and the opposing optical transmission device 306. After completing the setting of Pattern 1, the optical signal transceiver 304 determines whether the optical signal received from the opposing optical signal transceiver 310 is receivable. If the optical signal transceiver 304 determines that reception is not possible and responds with the determination result to the integrated management unit 303, the integrated management unit 303 determines that the initial setting in Pattern 1 has failed and moves on to the next initial setting in Pattern 2. In this way, in step 1, the optical signal transceiver 304 sequentially executes configurable patterns, repeatedly checks whether reception is possible, and selects an initial setting that allows reception of the optical signal from the opposing optical transmission device. If the optical signal transmitting / receiving unit 304 determines that it is possible to receive an optical signal, the optical signal transmitting / receiving unit 304 responds to the integrated management unit 303 that the reception is successful, and the process proceeds to step 2.

[0027] The integrated management unit 303, which has moved to step 2, transmits a setting information request (3) to the optical signal transceiver 304, which is a request for setting information, to the opposing optical transmission device 306. The integrated management unit 307, which detects the setting information request (4) from the optical signal transceiver 310, requests the setting information management unit 308 to return the setting information of the optical transmission device 300 in response (5). The setting information management unit 308, which has received the request, registers the stored setting information of the optical transmission device 300 in the optical signal transceiver 310 (6) (setting addition). The optical signal transceiver 310 transmits the registered setting information to the optical signal transceiver 304 (7) (setting information response).

[0028] The setting information management unit 302, which has performed (8) setting information reading from the optical signal transmitting / receiving unit 304 that has received the stored setting information, decrypts the setting parameters using the setting information encryption key 305 and requests the integrated management unit 303 to (9) re-register the setting information. Upon receiving the request, the integrated management unit 303 registers the setting parameters in the optical transmission device 300, completing the initial setup.

[0029] After completing this initialization, the optical transmission device 300 stores the setting information of the optical transmission device 306 in the setting information management unit 302, thereby enabling the optical transmission device 300 and the optical transmission device 306 to store each other's setting information. In other words, the optical transmission device 300 can return to the state before it was initialized when it was started up. For example, after the optical transmission device 300 is completed, the integrated management unit 307 of the optical transmission device 306 transmits the setting information to the setting information management unit 308 to send the setting information to the optical transmission device 300 (setting information management unit 302). Specifically, upon receiving an instruction to send the setting information, the setting information management unit 202 encrypts the setting information of the optical transmission device 306 and transmits it to the opposing optical transmission device 300. The optical signal transmission / reception unit 304 of the optical transmission device 300 receives the encrypted setting information of the optical transmission device 306, decrypts it in the setting information management unit 302, and stores the setting information of the optical transmission device 306.

[0030] The operation of receiving, decrypting, and storing the configuration information of the optical transmission device 306 in the optical transmission device 300 does not have to be a process performed after the completion of the initial configuration of the optical transmission device 300. For example, the optical signal transceiver 310 of the optical transmission device 306 may encrypt the configuration information of the registered optical transmission device 300 and transmit it to the optical signal transceiver 304 (7). The configuration information of the optical transmission device 306 may be sent together with the configuration information response. Specifically, upon detecting the (4) configuration information request from the optical signal transceiver 310 of the optical transmission device 306, the integrated manager 307 requests the configuration information manager 308 to return the configuration information of the optical transmission device 300 and the configuration information of the optical transmission device 306 in the response (5). Upon receiving the request, the configuration information manager 308 performs (6) configuration addition, which registers the stored configuration information of the optical transmission device 300 and the configuration information of the optical transmission device 306 in the optical signal transceiver 310. The optical signal transmitting / receiving unit 310 transmits the registered setting information to the optical signal transmitting / receiving unit 304 (7) to make a setting information response.

[0031] Although the first embodiment has been described as being applied to an optical transmission device that can use multiple initial setting patterns at initial startup, the configuration according to the first embodiment can also be applied to optical transmission devices such as fixed wavelength optical transmission devices that have only a single pattern in optical communication with a remote optical transmission device. In such fixed wavelength optical transmission devices, the initial search pattern may be limited to one time only.

[0032] As described above, in the first embodiment, the configuration information is stored in the opposing optical transmission device and acquired from the opposing optical transmission device at the initial startup of the replaced optical transmission device. This enables automatic recovery even in cases where there is no nearby supervisory control device that stores the configuration information, as in recent wavelength division multiplexing systems, thereby achieving the effect of shortening the downtime during optical transmission device replacement. Furthermore, because complete automation is possible, on-site work can be simplified, making it possible to standardize the skills required of workers, which has been a problem in recent years.

[0033] Second Embodiment Next, we will explain embodiment 2. In embodiment 1, we have only shown a device-specific automatic recovery method in which setting information after replacement of an optical transmission device is acquired from an opposing optical transmission device, but in embodiment 2, we will explain a hybrid method in which part of this automatic recovery is achieved by manual re-registration.

[0034] 5 is a software configuration diagram of the second embodiment, illustrating an example in which a UI unit 411 of an input unit serving as an external interface is provided. The optical transmission devices 400 and 406 illustrated in FIG. 5 illustrate a hybrid mechanism in which part of the automatic recovery at the initial startup of the optical transmission device (A) 100 and the optical transmission device (B) 102 is realized by manual re-registration.

[0035] The boot management unit 401 limits the initial search pattern by inputting, at the time of initial startup, a part of the pattern in step 1 described above via a CUI or the like from the UI unit 411 as information for limiting the initial settings, thereby enabling faster automatic recovery. The optical transmission device 400 in FIG. 5 corresponds to the optical transmission device 300 in FIG. 4. Similarly, the boot management unit 401 corresponds to the boot management unit 301, the setting information management unit 402 corresponds to the setting information management unit 302, the integrated management unit 403 corresponds to the integrated management unit 303, the optical signal transmission / reception unit 404 corresponds to the optical signal transmission / reception unit 304, and the encryption key 405 corresponds to the encryption key 305. The optical transmission device 406 in FIG. 5 corresponds to the optical transmission device 306 in FIG. 4. Similarly, the integrated manager 407 corresponds to the integrated manager 307, the setting information manager 408 corresponds to the setting information manager 308, the encryption key 409 corresponds to the encryption key 309, and the optical signal transmitter / receiver 410 corresponds to the optical signal transmitter / receiver 310.

[0036] Next, an automatic recovery operation at the initial startup of the optical transmission device 400 according to the second embodiment will be described with reference to FIG.

[0037] First, when the optical transmission device 400 is started up and the startup management unit 401 detects an initialized state, the optical transmission device 400 requests the UI unit 411 to input search conditions for initial adjustment. When the search conditions for initial adjustment are input from the UI unit 411 via the CUI or the like, the startup management unit 401 requests the optical signal transceiver unit 404 to perform (1) initial adjustment of the optical signal as step 1 for initial startup in the integrated management unit 403. The search conditions for initial adjustment input from the UI unit 411 are, for example, information that limits a plurality of initial settings prepared in advance to be sequentially executed by the optical signal transceiver unit, and may be information that limits a part of the pattern of step 1, or a range of the center wavelength, bandwidth, transmission rate, etc. of the optical signal to be received in the initial setting.

[0038] Upon receiving a request for (2) initial adjustment of the optical signal from the integrated management unit 303, the optical signal transceiver 404 sets pattern 1, which is an initial setting, for configurable parameters such as the center wavelength and bandwidth of the optical signal to be received or the transmission rate of the optical signal, in order to receive the optical signal from the optical transmission device opposite the optical signal transceiver 404. Hereinafter, the process from (3) setting information request onwards is the same as in the first embodiment, and therefore detailed description will be omitted.

[0039] In the second embodiment, input via CUI is given as an example, but it is also possible to realize an optical transmission device that has, for example, an LED on the front of the board that displays a pattern and a hardware switch that changes the pattern, and that allows the initial value of the search pattern to be manually changed by repeatedly pressing the switch.

[0040] As described above, according to the second embodiment, a function for shortening the initial setup time through the UI unit 411 is added, so that a hybrid recovery can be realized that prevents operational errors through automatic recovery and high-speed search through manual input.

[0041] Third Embodiment Next, a third embodiment will be described. The following mainly focuses on the differences from the first embodiment. However, the optical transmission device, optical transmission method, and optical transmission program according to the third embodiment can be applied not only to the optical transmission device, optical transmission method, and optical transmission program according to the first embodiment, but also to the optical transmission device, optical transmission method, and optical transmission program according to the second embodiment. Until now, the restoration operation during the initial startup of the optical transmission device 300 (the optical transmission device 400 in the second embodiment) was premised on the premise that the opposing optical transmission device 306 (the optical transmission device 406 in the second embodiment) had the configuration information of the optical transmission device 300 (the optical transmission device 400). The operation when a field worker mistakenly performs a restoration operation on the opposing optical transmission device 306 (the optical transmission device 406 in the second embodiment) that does not have the configuration information of the optical transmission device 300 (the optical transmission device 400) will be described as the third embodiment with reference to FIG. 4 .

[0042] Since the operations up to the (3) setting information request are the same as those in the first and second embodiments, only step 2 and subsequent steps will be described. The integrated management unit 303, which has proceeded to step 2, transmits a (3) setting information request, which is a request for setting information, to the optical signal transceiver 304 to the opposing optical transmission device 306. The integrated management unit 307, which detects the (4) setting information request from the optical signal transceiver 310, requests the setting information management unit 308 to return the setting information of the optical transmission device 300 in the response (5). The setting information management unit 308, which has received the request, registers the setting information of the optical transmission device 300 (hereinafter referred to as non-possessed information) indicating that there is no stored setting information for the optical transmission device 300, (6) performing setting addition. The optical signal transceiver 310 transmits the registered setting information (non-possessed information) to the optical signal transceiver 304, (7) performing a setting information response.

[0043] The optical signal transmitting / receiving unit 304 receives the non-possession information, and the setting information management unit 302 reads the setting information (8). The integrated management unit 303 notifies the integrated management unit 303 of the non-possession information. The integrated management unit 303 may use a notification unit such as an LED described in the second embodiment to notify that the non-possession information has been received from the optical transmission device 306. After this, the integrated management unit 303 may register the setting information of the optical transmission device 300 using the integrated monitoring server 103 or the installation terminal 104. Specifically, the integrated management unit 303 may use the notification unit to notify the outside when the content of the setting information received from the opposing optical transmission device 306 as its own setting information is not its own setting information, i.e., when the content is non-possession information. When the integrated monitoring server 103 registers the setting information of the optical transmission device 300, the notification unit may have a function of notifying the integrated monitoring server 103. When a field worker sets the setting information of the optical transmission device 300 using the installation terminal 104, the notification unit may have a function that can be recognized by the field worker.

[0044] Also, similar to the first embodiment, the optical signal transceiver 310 of the optical transmission device 306 may transmit non-possession information to the optical signal transceiver 304 (7) together with the configuration information response. Specifically, upon detecting the configuration information request (4) from the optical signal transceiver 310 of the optical transmission device 306, the integrated manager 307 requests the configuration information manager 308 to return the non-possession information and the configuration information of the optical transmission device 306 in the response (5). Upon receiving the request, the configuration information manager 308 performs (6) configuration addition, registering the non-possession information and the configuration information of the optical transmission device 306 in the optical signal transceiver 310. The optical signal transceiver 310 performs (7) the configuration information response, transmitting the non-possession information and the optical transmission device 306 to the optical signal transceiver 304.

[0045] As described above, in the third embodiment, even if a recovery operation is mistakenly performed on the opposing optical transmission device 306 (optical transmission device 406 in the second embodiment) that does not have the configuration information of the optical transmission device 300 (optical transmission device 400 in the second embodiment), it is possible to determine that this is an error, thereby reducing the risk of extending the failure time when replacing the optical transmission device.

[0046] Fourth Embodiment Next, a fourth embodiment will be described. In the first to third embodiments, an optical transmission device and an opposing optical transmission device store their respective setting information, and when performing initial adjustment on one optical transmission device, the setting information stored in the other optical transmission device is acquired, thereby facilitating adjustment. The optical transmission device, optical transmission method, and optical transmission program disclosed herein may be applied to three or more opposing optical transmission devices.

[0047] 6, assume that there are three optical transmission devices, a first optical transmission device 500, a second optical transmission device 501, and a third optical transmission device 502, and that an optical signal 503 is transmitted and received between the first optical transmission device 500 and the second optical transmission device 501, an optical signal 504 is transmitted and received between the first optical transmission device 500 and the third optical transmission device 502, and an optical signal 505 is transmitted and received between the second optical transmission device 501 and the third optical transmission device 502. The setting information of the first optical transmission device 500, the second optical transmission device 501, and the third optical transmission device 502 is set as first setting information 510, second setting information 511, and third setting information 512, respectively, and the first optical transmission device 500, the second optical transmission device 501, and the third optical transmission device 502 store the first, second, and third setting information, respectively. For example, when performing initial adjustment for the first optical transmission device 500, the first setting information 510, which is setting information for the first optical transmission device 500, is acquired from either the second optical transmission device 501 or the third optical transmission device 502 as the "opposing optical transmission device" by transmitting and receiving the optical signal 503 or the optical signal 504 through the operation described in the first to third embodiments. As described in the latter half of the first embodiment, the second setting information 511 or the third setting information 512, which are setting information for the "opposing optical transmission device," may also be acquired. Of course, when the second setting information 511 is acquired as setting information for the "opposing optical transmission device," the third setting information 512 may also be acquired. Conversely, when the third setting information 512 is acquired as setting information for the "opposing optical transmission device," the second setting information 511 may also be acquired.

[0048] Note that there are actually two pieces of each of the first setting information 510, the second setting information 511, and the third setting information 512. That is, the first setting information 510 includes a setting between the first optical transmission device 500 and the second optical transmission device 501, and a setting between the first optical transmission device 500 and the third optical transmission device 502. Similarly, the second setting information 511 includes a setting between the second optical transmission device 501 and the first optical transmission device 500, and a setting between the second optical transmission device 501 and the third optical transmission device 502. The third setting information 512 includes a setting between the third optical transmission device 502 and the first optical transmission device 500, and a setting between the third optical transmission device 502 and the second optical transmission device 501.

[0049] As described above, in the fourth embodiment, setting information is stored in three or more opposing optical transmission devices, and when the optical transmission device after replacement is initially started, the setting information is acquired from one of the opposing optical transmission devices. Therefore, even if multiple optical transmission devices require initial adjustment at the same time, it is possible to perform the same automatic recovery as the optical transmission device, optical transmission method, and optical transmission program of the first to third embodiments. [Explanation of symbols]

[0050] 21 CPU, 22 main memory, 23 I / O interface, 24 storage unit, 25 system bus, 200, 300, 306, 400, 406 optical transmission device, 201 UI unit, 202, 302, 308, 402, 408 setting information management unit, 203, 303, 307, 403, 407 integrated management unit, 204, 304, 310, 404, 410 optical signal transmission / reception unit, 205, 305, 309, 405, 409 encryption key, 411 UI unit, 500 first optical transmission device, 501 second optical transmission device, 502 third optical transmission device, 503, 504, 505 optical signal, 510 first setting information, 511 second setting information, 512 third setting information.

Claims

1. an optical signal transmitting / receiving unit that realizes bidirectional communication using an optical signal overhead with an optical transmission device that faces the device via a communication line and manages setting information of the device; a setting information management unit that manages setting information of the optical transmission device itself and setting information of the opposing optical transmission device; an integrated management unit that, when detecting initialization of the own device, sequentially executes a plurality of initial settings prepared in advance for the optical signal transmitting / receiving unit to select an initial setting that allows reception of an optical signal from the opposing optical transmission device, and configures the own device using the setting information of the own device received from the opposing optical transmission device using the selected initial setting; An optical transmission device comprising:

2. The opposing optical transmission device transmits encrypted setting information of the own device, the setting information management unit decodes the setting information of the own device received by the optical signal transmitting / receiving unit, and requests the integrated management unit to re-register the decoded setting information; The integrated management unit configures the device using the decrypted configuration information.

2. The optical transmission device according to claim 1, wherein:

3. the opposing optical transmission device transmits encrypted setting information of the opposing optical transmission device; The setting information management unit decrypts the encrypted setting information of the opposing optical transmission device received by the optical signal transmitting / receiving unit.

3. The optical transmission device according to claim 2, wherein:

4. the opposing optical transmission device transmits encrypted setting information of the opposing optical transmission device and encrypted setting information of an optical transmission device opposing both the optical transmission device itself and the opposing optical transmission device; The setting information management unit decrypts the encrypted setting information of the opposing optical transmission device received by the optical signal transmitting / receiving unit, and the encrypted setting information of the optical transmission device opposing both the own device and the opposing optical transmission device.

3. The optical transmission device according to claim 2, wherein:

5. further comprising an input unit into which information limiting the initial setting is input, the integrated management unit causes the optical signal transmitting and receiving unit to execute the initial setting based on the information input from the input unit, and selects an initial setting that enables reception of an optical signal from the opposing optical transmission device.

5. The optical transmission device according to claim 1, wherein:

6. The integrated management unit notifies the outside when the content received from the opposing optical transmission device as the setting information of the own device is not the setting information of the own device.

2. The optical transmission device according to claim 1, wherein:

7. 1. A computer-implemented optical transmission method, comprising: detecting initialization of the own device; a step of sequentially executing a plurality of initial settings prepared in advance to select an initial setting that allows reception of an optical signal from the opposing optical transmission device when realizing bidirectional communication using an optical signal overhead between the optical transmission device that is opposite the own device via a communication line and that manages setting information of the own device; configuring the optical transmission device with the setting information of the optical transmission device received from the opposing optical transmission device in the selected initial setting; An optical transmission method comprising:

8. detecting initialization of the own device; a step of sequentially executing a plurality of initial settings prepared in advance to select an initial setting that allows reception of an optical signal from the opposing optical transmission device when realizing bidirectional communication using an optical signal overhead between the optical transmission device that is opposite the own device via a communication line and that manages setting information of the own device; configuring the optical transmission device with the setting information of the optical transmission device received from the opposing optical transmission device in the selected initial setting; An optical transmission program that causes a computer to execute the above.

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