JP2020052453A - Communication apparatus and setting method of communication apparatus - Google Patents

Abstract

To update a control program without stopping a communication apparatus.SOLUTION: A communication apparatus includes: a non-transient memory that stores activation setting information that is setting information to which a first type program module and a second type program module included in a control program for communication refer during activation processing; a transient memory that stores operation setting information that is setting information to which the first type program module and the second type program module refer during operation; and a processor. When updating the control program while operating an own apparatus, the processor executes: processing for copying a part or the whole of the operation setting information on the activation setting information; processing for setting the updated first type program module based on the operation setting information; and processing for setting the updated second type program module based on the activation setting information obtained by copying a part or the whole of the operation setting information.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a communication device and a communication device setting method.

  Patent Document 1 discloses a network device that stores, as configuration information of a network device, configuration information (running-config) that is currently operating and configuration information (startup-config) that is valid at the time of restart. I have.

JP 2010-21755 A

  When updating the control program of the communication device, the communication device restarts itself, expands the entire updated control program in the RAM that is a temporary memory, and sets the setting information (startup-config in Patent Document 1). Is read by the CPU and the configuration of the entire control program after the update is set. While the communication device is restarted, the function of the communication device stops. However, a communication device that requires high reliability is required not to stop the function of the communication device while updating the control program.

  The present disclosure includes the following inventions. However, the present invention is defined by the appended claims.

  The communication device according to one aspect of the present invention provides activation setting information, which is setting information referred to during a startup process by a first type of program module and a second type of program module included in a control program for communication. A non-transitory memory for storing operation setting information, which is setting information referred to during operation of the first type of program module and the second type of program module, A processor, when the processor updates the control program while operating its own device, a process of copying a part or all of the operation setting information to the activation setting information; and Processing for setting an updated first type of program module based on the first and second program modules, and the starting setting in which a part or all of the operation setting information is copied. Based on the information, a process of setting an updated second type of program modules, the execution.

  A setting method of a communication device according to one embodiment of the present invention is setting information that a first type program module and a second type program module included in a control program for communication refer to during a startup process. A non-transitory memory for storing startup setting information, and a transient memory for storing operation setting information which is setting information referred to during operation of the first type of program module and the second type of program module. A method of setting a communication device including a memory and a processor, wherein the processor activates part or all of the operation setting information when updating the control program while operating the communication device. The processor copies the first-type program module based on the operation setting information, and sets the updated first-type program module based on the operation setting information. Processor, based on the activation setting information partially or wholly replicated in the operation setting information, to set the updated second type of program modules.

  The present invention can be realized not only as a communication device having the characteristic processing unit as described above, but also as a setting method of a communication device having such characteristic processing as a step, or such a step can be realized by a computer. It can be realized as a computer program to be executed. Further, part or all of the communication device can be realized as a semiconductor integrated circuit, or can be realized as a communication system including the communication device.

  According to the present invention, the control program can be updated without stopping the functions of the device.

FIG. 1 is a diagram illustrating an example of an overall configuration of a communication system according to an embodiment. FIG. 2 is a block diagram illustrating an example of an internal configuration of a communication device (station-side device) according to the embodiment. FIG. 4 is a schematic diagram illustrating an example of a configuration of a non-transitory memory and a transient memory immediately after the start of a control program. It is a schematic diagram which shows an example of a structure of the non-transitory memory and the transitory memory when the setting information of the operating control program is changed. FIG. 9 is a schematic diagram illustrating an example of a configuration of a non-transitory memory and a transient memory immediately after an update program is provided to a communication device. FIG. 7 is a schematic diagram illustrating an example of a configuration of a non-transitory memory and a transient memory when operation setting information is not copied to startup setting information. FIG. 9 is a schematic diagram illustrating an example of a configuration of a non-transitory memory and a transient memory when operation setting information is copied to startup setting information. 6 is a flowchart illustrating a procedure of a program update process in the communication device according to the embodiment. 9 is a flowchart illustrating a procedure of a non-stop update process in the communication device according to the embodiment. 5 is a flowchart illustrating a procedure of an abnormality monitoring process in the communication device according to the embodiment.

<Overview of Embodiment of the Present Invention>
Hereinafter, an outline of an embodiment of the present invention will be listed and described.
(1) The communication device according to the present embodiment has a startup setting, which is setting information that the first type of program module and the second type of program module included in the control program for communication refer to during startup processing. A non-transitory memory for storing information, a transient memory for storing operation setting information that is setting information referred to during operation of the first type of program module and the second type of program module; And a processor, wherein the processor is configured to, when updating the control program while operating the own device, copy a part or all of the operation setting information to the activation setting information; A process of setting an updated first-type program module based on information; and a start-up in which part or all of the operation setting information is copied Setting the updated second type of program module based on the setting information. Accordingly, when the control program is updated, each of the first type of program module and the second type of program module can be set without stopping the communication device. Further, since part or all of the operation setting information is copied to the start setting information, it is possible to suppress the occurrence of inconsistency in the setting information used for each of the first type and the second type of program module. . Here, the “program module” is a partial program in an executable format, and is an object module. The “program” is an aggregate of a plurality of program modules connected to each other, and is an object program.

  (2) In the communication device according to the present embodiment, when the processor updates the first type of program module, the processor may update the first type of program module before stopping the first type of program module before updating the first type of program module. Activating the first type of program module, setting the updated first type of program module based on the operation setting information, and executing the first type of program before the update Executing a process of stopping the module; and the processor, when updating the second type of program module, stopping the second type of program module before the update; A process of activating the second type of program module after updating after stopping the two types of program modules; On the basis of the start setting information partially or wholly copied information, and processing for setting a second type of program module after the update, it may be implemented. As a result, the first type of program module is updated without stopping. Therefore, the control program can be updated without stopping the functions of the device.

  (3) In the communication device according to the present embodiment, the first type of program module is a program module that can be set by setting information stored in the temporary memory. The two types of program modules may be program modules set by setting information stored in the non-transitory memory. Thereby, the first type of update module can be set based on the operation setting information stored in the temporary memory, and the second type of update module can be set in the activation type stored in the non-transitory memory. It can be set based on the setting information.

  (4) In the communication device according to the present embodiment, the first type of program module is a program module that executes communication control, and the second type of program module is a program module other than the communication control. It may be a program module that executes processing. Thus, the control program can be updated without stopping communication control.

  (5) In the communication device according to the present embodiment, the process of copying may be a process of copying information different from the activation setting information in the operation setting information to the activation setting information. Accordingly, the operation setting information and the start setting information can be matched without copying all of the operation setting information to the start setting information collectively.

  (6) In the communication device according to the present embodiment, the processor may execute the copying process when a predetermined update condition is satisfied. Thus, the update of the control program can be started when the update condition is satisfied.

  (7) In the communication device according to the present embodiment, the update condition is that a difference between the operation setting information and the activation setting information is equal to or more than a predetermined amount, that the operation setting information is changed, That a program update instruction is given, that a predetermined update time is reached, and that information belonging to a specific class among information belonging to a plurality of classes included in the operation setting information is changed. There may be at least one. Thereby, various conditions can be set as update conditions.

  (8) Further, in the communication device according to the present embodiment, when the processor detects an abnormality while the control program is updated, the processor stops all of the operating program modules and then stops updating the control program. The program module may be activated to execute a process of setting the activated program module before update based on the activation setting information. Thus, when an abnormality occurs in the communication device, the control program can be restored from the abnormality by returning to the control program before the update.

  (9) In the communication device according to the present embodiment, the abnormality may include a communication error. If the control program is not properly updated, normal communication may not be performed and a communication error may occur. With the above configuration, when a communication error occurs, there is a possibility that the communication error can be resolved by returning to the control program before the update.

  (10) The setting method of the communication device according to the present embodiment uses the setting information that the first type program module and the second type program module included in the communication control program refer to during the start-up process. A non-transitory memory that stores certain startup setting information, and a temporary storage that stores operation setting information that is setting information referred to during operation of the first type program module and the second type program module. Memory, and a processor, a setting method of a communication device comprising: when updating the control program while operating the communication device, the processor, the processor, the part or all of the operation setting information, Copying into startup setting information, wherein the processor sets the updated first type program module based on the operation setting information; Serial processor, on the basis of the start setting information partially or wholly replicated in the operation setting information, to set the updated second type of program modules. Accordingly, when the control program is updated, each of the first type of program module and the second type of program module can be set without stopping the communication device. Further, since part or all of the operation setting information is copied to the start setting information, it is possible to suppress the occurrence of inconsistency in the setting information used for each of the first type and the second type of program module. .

<Details of Embodiment of the Present Invention>
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that at least a part of the embodiments described below may be arbitrarily combined.

  In the following embodiments, an example will be described in which the communication device is a station device for optical communication. However, the communication device is not limited to the optical communication device. The communication device according to the present embodiment may be a communication device other than the optical communication device, such as a wireless communication device or a wired communication device.

[1. Configuration of Communication System]
FIG. 1 is a diagram illustrating an example of an overall configuration of a communication system according to the present embodiment. As shown in FIG. 1, a communication system 10 is an optical access system, and includes an optical network unit (OLT) 11, a plurality of optical network terminals (ONUs) 12, and a PON line 13. Is provided.

  An upper network 50 such as the Internet is connected to the L2 switch 23 of the OLT 11 (see FIG. 2).

  A user communication device capable of Ethernet (registered trademark) communication can be connected to a UNI port (not shown) of the ONU 12. The number and types of user communication devices connected to the ONU 12 are not particularly limited. For example, the user communication device may be a terminal such as a personal computer or a relay device such as a router or a gateway. That is, a network may be connected to the ONU 12 via the relay device.

  The PON line 13 is an optical communication line including an optical splitter 14 and optical fibers 15 and 16. The PON line 13 includes one trunk optical fiber 15 and a plurality of branch optical fibers 16. The optical fibers 15 and 16 are connected to the optical splitter 14. The optical signal transmitted from the OLT 11 is split by the optical splitter 14 through the trunk optical fiber 15 of the PON line 13. The split optical signal is transmitted to each ONU 12 through the branch optical fiber 16.

  The optical signal transmitted from each ONU 12 passes through the branch optical fiber 16 and is focused by the optical splitter 14. The focused optical signal is transmitted to the OLT 11 through the trunk optical fiber 15. The optical splitter 14 used for the PON line 13 does not require an external power supply and passively splits or multiplexes an optical signal from an input optical signal.

  After the connection between the OLT 11 and the ONU 12 is established, the user communication device can access the upper network 50 via the ONU 12 and the OLT 11. The upstream optical signals transmitted to the branch optical fiber 16 join at the optical splitter 14. Therefore, multiplexing is required so that optical signals of the same wavelength do not collide after merging. In the communication system 10, time division multiplexing according to MPCP is performed. Specifically, the OLT 11 calculates an upstream transmission start time and a transmission permission amount of data stored inside the ONU 12 based on a control frame (report) transmitted from each ONU 12.

  Next, the OLT 11 transmits the control frame (grant) in which the instruction signal is inserted to each ONU 12 via the PON line 13. Each ONU 12 reports the length of data in its own buffer to the OLT 11 at the time specified by the grant using a report. Each ONU 12 receives the grant into which the instruction signal is inserted from the OLT 11. Based on the instruction signal, each ONU 12 transmits the data in its own buffer to the OLT 11 together with a report.

[2. Internal configuration of OLT]
FIG. 2 is a block diagram illustrating an example of the internal configuration of the OLT 11.
As shown in FIG. 2, the OLT 11 includes an optical transceiver 21, a PON processing unit 22, an L2 switch 23, a control unit 24, and a communication interface 26.

The optical transceiver 21 includes an optical device (for example, a pluggable optical transceiver) including a circuit for transmitting and receiving an optical signal. The optical transceiver 21 is optically connected to the trunk optical fiber 15 (see FIG. 1) and is electrically connected to the PON processing unit 22.
The optical transceiver 21 converts an optical signal and an electric signal mutually. That is, the optical transceiver 21 converts an upstream signal including an optical signal from the ONU 12 into an electric signal. The optical transceiver 21 converts a downstream signal composed of an electric signal from the PON processing unit 22 into an optical signal.

The PON processing unit 22 is formed of an integrated circuit that executes a predetermined communication process or the like in accordance with the PON communication standard.
When the upstream signal is a control frame (report) from the ONU 12, the PON processing unit 22 determines a transmission start time and a transmission permission amount in the upstream direction for the ONU 12, and notifies the ONU 12 of the control frame (grant). .

When the frame included in the upstream signal is a data frame to the upper network 50, the PON processing unit 22 transmits the frame to the L2 switch 23.
When the frame included in the downstream signal is a data frame to the ONU 12, the PON processing unit 22 causes the optical transceiver 21 to transmit the frame.

The L2 switch 23 is composed of an integrated circuit that determines a transmission port according to the destination of the received L2 layer frame.
When a frame included in a downstream signal from the upper network 50 is addressed to the ONU 12, the L2 switch 23 transmits the frame to the PON processing unit 22 of the own device.

When the frame included in the upstream signal from the PON processing unit 22 is a data frame to the upper network 50, the L2 switch 23 transmits the frame to the upper network 50.
When the frame included in the uplink signal from the PON processing unit 22 is a management frame addressed to the control unit 24, the L2 switch 23 transmits the frame to the control unit 24.

  The control unit 24 is connected to the dedicated port of the L2 switch 23, and can communicate with the control unit of the ONU 12 using the PON line 13. The control unit 24 is communicably connected to an external device 25 such as a personal computer (PC).

  The control unit 24 includes a CPU 241 as a hardware processor, a non-transitory memory 242 such as a flash memory and a hard disk, and a transient memory 243 as a RAM.

  The control program 300 is stored (installed) in the non-transitory memory 242. The control program 300 is a program for controlling communication by the OLT 11 by controlling the L2 switch 23. The control program 300 has N program modules (first module 300_1, second module 300_2, third module 300_3,..., N-th module 300_N).

  The boot setting information 350 is stored in the non-transitory memory 242. The startup setting information 350 is setting information that is read in the startup processing of the control program 300 and is used for setting the control program 300.

  The CPU 241 executes the control program 300. When the control program 300 is started, the first module 300_1, the second module 300_2, the third module 300_3,..., The N-th module 300_N are read from the non-transitory memory 242 and are loaded on the transient memory 243. That is, the control program 300 is loaded into the temporary memory 243, and stored in the temporary memory 243 as the developed control program 400. The control program 400 includes N program modules (first module 400_1, second module 400_2, third module 400_3,..., N-th module 400_N).

  The operation setting information 450 is stored in the temporary memory 243. The operation setting information 450 is setting information that is read by the operating control program 400 and used for setting the control program 400.

  The non-transitory memory 242 stores an update setting program 370 for updating the control program and setting each program module. The OLT 11 includes a computer. The OLT 11 updates a control program of the OLT 11 and sets functions of each program module by executing an update setting program 370, which is a computer program stored in a storage device of the computer, by the CPU 241. Be demonstrated. The update setting program 370 can be stored in a recording medium such as a CD-ROM. The CPU 241 can execute the update setting program 370. When the CPU 241 executes the update setting program 370, the OLT 11 can execute a program update process and an abnormality monitoring process as described later.

[3. Update of control program]
Update of the control program in the OLT 11 according to the present embodiment will be described.

  FIG. 3 is a schematic diagram illustrating an example of a configuration of the non-transitory memory 242 and the transient memory 243 immediately after the control program 400 is started. In the example of FIG. 3, the initial value of the parameter P1 for the first module 400_1 is SV1, the initial value of the parameter P2 for the second module 400_2 is SV2, and the initial value of the parameter P3 for the third module 400_3 is SV3. In the start setting information 350, P1 = SV1, P2 = SV2, P3 = SV3,... Are stored. In the startup processing of the first module 400_1, the second module 400_2, the third module 400_3,..., The CPU 241 reads the startup setting information 350 and sets P1 = SV1, P2 = SV2, P3 = SV3,. After setting of each of the modules 400_1, 400_2, 400_3,..., The startup setting information 350 is copied to the operation setting information 450. Therefore, the operation setting information 450 immediately after the start of the control program 400 matches the start setting information 350.

  FIG. 4 is a schematic diagram illustrating an example of the configuration of the non-transitory memory 242 and the transient memory 243 when the setting information of the operating control program 400 is changed. While the control program 400 is being executed and the OLT 11 is operating, the setting information in the control program 400 may be changed. When the operating control program 400 acquires the setting information, it refers to the operation setting information 450 in the temporary memory 243 instead of the startup setting information 350 in the non-transitory memory 242. Therefore, the new setting information of the operating control program 400 is written to the operation setting information 450 instead of the startup setting information 350.

  In the example of FIG. 4, the value SV1 of the parameter P1 is not changed, the value of the parameter P2 is changed from SV2 to SV20, and the value of the parameter P3 is changed from SV3 to SV30. Therefore, in the operation setting information 450, P1 = SV1, P2 = SV20, and P3 = SV30. On the other hand, in the activation setting information 350, P1 = SV1, P2 = SV2, and P3 = SV3. As described above, the operation setting information 450 and the activation setting information 350 are different from each other.

  The OLT 11 according to the present embodiment can execute a non-stop update process for updating a control program without restarting the OLT 11 itself. The OLT 11 can also execute a normal update process of updating the control program by restarting the OLT 11 itself. When the control program is updated, a new control program (hereinafter, referred to as “pre-update program”) 400 is operated from, for example, the external device 25 or a server of the higher-level network 50 while the control program 400 before the update is operating. , "Update program") is transmitted to the OLT 11.

  FIG. 5 is a schematic diagram illustrating an example of the configuration of the non-transitory memory 242 and the transient memory 243 immediately after the update program is given to the OLT 11. The OLT 11 installs the update program 330 in the non-transitory memory 242 while leaving the pre-update program 300. Thus, the pre-update program 300 and the update program 330 coexist in the non-transitory memory 242.

  FIG. 6 is a schematic diagram illustrating an example of the configuration of the non-transitory memory 242 and the transient memory 243 when the operation setting information 450 is not copied to the activation setting information 350.

  In the present embodiment, there are two types of program modules included in the update program 430. The first type of program module is a program module that can be set by the setting information stored in the temporary memory 243. In the present embodiment, the setting information of the first type of program module is copied from the operation setting information 450 to the area of the temporary memory 243 different from the operation setting information 450 as the configuration inheritance information, and the address of the area is set to the relevant information. Notified to module. The CPU 241 reads the setting information from the notified address, and sets the first type of program module.

  With the first type of program module in the pre-update program 400 activated, the first type of program module in the update program 430 is activated. That is, while the first type of program module in the pre-update program 400 is expanded in the temporary memory 243, the first type of program module in the update program 430 is also expanded in the temporary memory 243.

  While the first type program module in the update program 430 is set by the configuration inheritance information, the first type program module in the pre-update program 400 also continues to be executed. In the example of FIG. 6, the first type of program module is a first module and a second module. While the first module 400_1 in the pre-update program 400 is operating, the setting value of the parameter P1, which is the setting information for the first module 400_1, is configured in an area different from the operation setting information 450 in the temporary memory 243. Stored as takeover information. Further, while the first module 400_1 is operating, the first module 430_1 in the update program 430 is set by the configuration takeover information. That is, during the setting of the first module 430_1, the first module 400_1 before the update and the first module 430_1 after the update are simultaneously executed. Similarly, while the second module 400_2 in the pre-update program 400 is operating, the second module 430_2 in the update program 430 stores the configuration inheritance information (set value of P2) stored in an area different from the operation setting information 450. ). By doing so, the first module and the second module can be updated by one CPU 241 without stopping the functions realized by the first module and the second module. After the setting of the first module 430_1 after the update, the first module 400_1 before the update is stopped, and the area of the first module 400_1 in the temporary memory 243 is released. Similarly, after the setting of the second module 430_2 after the update, the second module 400_2 before the update is stopped, and the area of the second module 400_2 of the temporary memory 243 is released.

  The first type of program module is a program module that executes communication control. Therefore, the first type of program module is updated without stopping the communication function of the OLT 11.

  When the first type of program module is set, the address of the setting information of the module in the operation setting information 450 is notified to the module, and the setting information read directly from the operation setting information 450 is used for the setting. Modules may be set. That is, in setting the first module 430_1, the address of the setting value of the parameter P1 in the operation setting information 450 is notified to the first module 430_1, and the CPU 241 sets the first module 430_1 according to the setting value of P1 at the address. Can be. Similarly, in the setting of the second module 430_2, the address of the setting value of the parameter P2 in the operation setting information 450 is notified to the second module 430_2, and the CPU 241 sets the second module 430_2 according to the setting value of P2 at the address. be able to.

  The second type of program module is a program module that is set based on the setting information stored in the non-transitory memory 242. In the present embodiment, the CPU 241 reads the startup setting information 350 from the non-transitory memory 242 and sets a second type of program module.

  After the second type of program module in the pre-update program 400 stops, the second type of program module in the update program 430 is started, and the module is set by the start setting information 350. In other words, after the area in the temporary memory 243 of the second type program module in the pre-update program 400 is released, the second type of program module in the update program 430 is expanded in the temporary memory 243. . In the example of FIG. 6, the second type of program module is a third module. The third module 400_3 in the pre-update program 400 is stopped, and then the third module 430_3 in the update program 430 is started. The setting value of the parameter P3, which is the setting information for the third module 430_3, is read from the startup setting information 350 in the non-transitory memory 242, and the third module 430_3 is set. The third modules 400_3 and 430_3 before and after the update are not executed at the same time. By doing so, it is possible to set an updated third module 430_3 that cannot be executed simultaneously with the third module 400_3 before the update.

  The second type of program module is a program module that executes processing other than communication control. The processing other than the communication control is, for example, processing related to the maintenance function of the OLT 11. Therefore, the second type of program module is updated without stopping communication control.

  However, if the operation setting information 450 has been changed, the activation setting information 350 and the operation setting information 450 will be in different states. Therefore, when setting of each program module of the update program 430 is performed in this state, the first type of program module is set by the setting information obtained from the operation setting information 450, and the second type of program module is set by the start setting. Since the setting is performed based on the setting information obtained from the information 350, a setting mismatch occurs between the two modules. In other words, the third module 430_3 needs to be set with P3 = SV30 included in the operation setting information 450, but is set with P3 = SV3 included in the startup setting information 350.

  In the OLT 11 according to the present embodiment, before setting the updated program module, part or all of the operation setting information 450 is copied to the start setting information 350, and the operation setting information 450 and the start setting information 350 are matched. Let it. As a result, setting inconsistency between the first type of program module and the second type of program module can be prevented.

  FIG. 7 is a schematic diagram illustrating an example of a configuration of the non-transitory memory 242 and the transient memory 243 when the operation setting information 450 is copied to the activation setting information 350. In the example of FIG. 7, P1 = SV1, P2 = SV20, P3 = SV30,... In both the operation setting information 450 and the activation setting information 350. That is, the startup setting information 350 matches the operation setting information 450. In such a state, when setting of each program module of the update program 430 is performed, inconsistency of the setting between the first type of program module and the second type of program module is prevented. That is, the first module 430_1 is set by P1 = SV1 included in the operation setting information 450, the second module 430_2 is set by P2 = SV20 included in the operation setting information 450, and the third module 430_3 is set by the activation setting information 350. P3 included is set by SV30.

[4. Operation in updating control program of OLT 11]
The operation of updating the control program in the OLT 11 according to the present embodiment will be described.

  The CPU 241 executes a program update process by executing the update setting program 370 (see FIG. 2). FIG. 8 is a flowchart illustrating the procedure of the program update process.

In the program update process, first, the CPU 241 determines whether or not an update condition has been satisfied (step S101). The update condition is a condition when the control program 300 is updated. The update condition may be selected from the following conditions (1) to (5). In addition, a plurality of conditions among (1) to (5) may be combined as an update condition. For example, the condition that all of the plurality of conditions selected from (1) to (5) are satisfied may be regarded as the satisfaction of the update condition, or the condition of the plurality of conditions selected from (1) to (5) may be satisfied. The establishment of any one of the conditions may be regarded as the establishment of the update condition.
(1) The difference between the operation setting information 450 and the startup setting information 350 is equal to or more than a predetermined amount.
(2) At least a part of the operation setting information 450 is changed.
(3) An update instruction for the control program 300 is given.
(4) It reaches a predetermined update time.
(5) Among the information belonging to a plurality of classifications included in the operation setting information 450, information belonging to a specific classification is changed.

  In (1), the difference is equal to or more than the predetermined amount, for example, when the number of different setting values between the operation setting information 450 and the activation setting information 350 can be equal to or more than a predetermined value. The capacity can be equal to or more than a predetermined value. In (3), the update instruction can be given from, for example, the external device 25 or a server of the upper network 50. In (4), a time at night (for example, 2:00) where communication traffic is small can be set as the update time.

  In (5), the setting information can be classified into a plurality of types. For example, the setting information regarding communication may be classified as “communication”, and the setting information regarding maintenance may be classified as “maintenance”. If information belonging to a specific classification (for example, “communication”) among the setting information classified in this way is changed, the condition (5) is satisfied. Further, since the condition of (2) and the condition of (5) partially overlap, any one of the update conditions may be included.

  If the update condition is not satisfied (NO in step S101), CPU 241 executes step S101 again.

  When the update condition is satisfied (YES in step S101), CPU 241 determines whether or not to execute the non-stop update process (step S102). The determination as to whether or not to execute the non-stop update process uses, for example, whether or not the non-stop update process is specified in a given update instruction.

  When it is determined that the non-stop update process is to be performed (YES in step S102), CPU 241 executes the non-stop update process (step S103). When it is not determined that the non-stop update process is to be performed (NO in step S102), the CPU 241 performs a normal update process (step S104). The normal update process is a process of restarting the OLT 11 and updating the control program. When the non-stop update process or the normal update process ends, the CPU 241 ends the program update process.

  Hereinafter, the non-stop update processing will be described. FIG. 9 is a flowchart illustrating the procedure of the non-stop update process.

  In the non-stop update process, first, the CPU 241 copies a part or all of the operation setting information 450 to the start setting information 350 (step S201). Thus, the start setting information 350 matches the operation setting information 450. In this process, difference information different from the activation setting information 350 among the operation setting information 450 may be copied to the activation setting information 350. Further, all of the operation setting information 450 may be copied to the activation setting information 350.

  The CPU 241 installs the update program 330 with the pre-update program 300 stored in the non-transitory memory 242 (step S202). That is, in the non-transitory memory 242, the update program 330 is added separately from the pre-update program 300, instead of overwriting the pre-update program 300 with the update program 330.

  The CPU 241 notifies all of the first module 400_1, the second module 400_2, the third module 400_3,..., The N-th module 400_N of the pre-update program 400 of the end (step S203).

  Next, the CPU 241 may perform setting based on the setting information stored in the temporary memory 243 among the first module 400_1, the second module 400_2, the third module 400_3,... For a possible program module, that is, the first type of program module, the setting information (configuration takeover information) to be taken over from the module before update to the module after update is stored in the temporary memory 243 (step S204). In this process, of the operation setting information 450, the setting information of the first type program is stored in the temporary memory 243 as the configuration inheritance information.

  The CPU 241 initializes the value of the variable M, which is the index of the program module (M = 1) (Step S205). The CPU 241 determines whether or not the value of the variable M is equal to or less than the number N of modules in the control program (Step S206).

  If N ≧ M (YES in step S206), the CPU 241 determines whether or not there is setting information to be carried over from the M-th module before update to the M-th module after update, that is, if the M-th module is of the first type It is determined whether or not the module is a program module (step S207).

  If there is setting information to be carried over from the M-th module 400_M before the update to the M-th module 430_M after the update, that is, if the M-th module is the first type of program module (YES in step S207), the CPU 241 executes the update. The M-th module 430_M of the update program 430 is started without stopping the M-th module 400_M of the previous program (Step S208). That is, in the temporary memory 243, the M-th module 430_M of the update program 430 is expanded while the M-th module 400_M of the pre-update program 400 is expanded.

  The CPU 241 takes over the setting information of the M-th module (step S209). In this process, the update takeover information is read from the temporary memory 243 by the CPU 241 and the M-th module 430_M of the update program 430 is set.

  The CPU 241 stops the M-th module 400_M of the pre-update program 400 (Step S210). As a result, the area of the M-th module 400_M of the pre-update program 400 in the temporary memory 243 is released.

  Next, the CPU 241 increments the value of the variable M (step S214), and moves the processing to step S206.

  On the other hand, when there is no setting information passed from the M-th module 400_M before the update to the M-th module 430_M after the update, that is, when the M-th module is the second type of program module (NO in step S207), the CPU 241 Then, the M-th module 400_M of the pre-update program 400 is stopped (Step S211). As a result, the area of the M-th module 400_M of the pre-update program 400 in the temporary memory 243 is released.

  After that, the CPU 241 activates the M-th module 430_M of the update program 430 (Step S212). That is, in the temporary memory 243, the M-th module 430_M of the update program 430 is expanded in a state where the M-th module 400_M of the pre-update program 400 does not exist.

  The CPU 241 reads the setting information for the M-th module 430_M from the activation setting information 350, and sets the M-th module 430_M (Step S213).

  Next, the CPU 241 increments the value of the variable M (step S214), and moves the processing to step S206.

  As described above, the setting up to the N-th module is performed. If M is greater than N (NO in step S206), CPU 241 copies startup setting information 350 in non-transitory memory 242 to operation setting information 450 in temporary memory 243 (step S215). Thereby, the identity between the startup setting information 350 and the operation setting information 450 at the time of starting the update program 430 is secured. Thus, the non-stop update process ends.

  If an abnormality occurs in the OLT 11 during the non-stop update processing as described above, it is necessary to return the control program to a normal state. Therefore, the OLT 11 according to the present embodiment executes an abnormality monitoring process. Hereinafter, the abnormality monitoring process will be described.

  FIG. 10 is a flowchart illustrating the procedure of the abnormality monitoring process. The abnormality monitoring process is executed in parallel with the non-stop update process.

  The control program of the OLT 11 is provided with an abnormality detection function. This abnormality detection function is a function for detecting an abnormality occurring in the OLT 11 such as an abnormality in processing in a control program, a communication error, and the like. In the abnormality monitoring process, first, the CPU 241 determines whether an abnormality of the OLT 11 has been detected (step S301).

  If no abnormality is detected (NO in step S301), CPU 241 executes the process of step S301 again.

  On the other hand, if an abnormality is detected (YES in step S301), CPU 241 instructs interruption of the program update process (step S302). As a result, the program update process is interrupted.

  Next, the CPU 241 stops all running program modules (step S303). Further, the CPU 241 activates all of the first module 400_1, the second module 400_2, the third module 400_3,..., The N-th module 400_N of the pre-update program 400 (Step S304).

  The CPU 241 reads the startup setting information 350 from the non-transitory memory 242, and stores all of the first module 400_1, the second module 400_2, the third module 400_3,... (Step S305). Thus, the abnormality monitoring process ends.

  By such an abnormality monitoring process, if an abnormality occurs in the OLT 11 during the execution of the non-stop update process, the pre-update program 400 is restored.

  With the above-described configuration, the OLT 11 according to the present embodiment executes a process of copying a part or all of the operation setting information to the startup setting information when the CPU 241 updates the pre-update program 400 to the update program 430. I do. Further, the CPU 241 sets the first type of program module updated based on the operation setting information, and updates the second type of program module based on the startup setting information in which part or all of the operation setting information is copied. And processing for setting the type of program module. Thus, when the control program is updated, each of the first type of program module and the second type of program module can be set without stopping the OLT 11. Further, since part or all of the operation setting information is copied to the start setting information, it is possible to suppress the occurrence of inconsistency in the setting information used for each of the first type and the second type of program module. .

  When the module of the pre-update program 400 is the first type of program module, the CPU 241 activates the corresponding module of the update program 430 before stopping the module, and sets the activated module to the operation setting information. Is set by the configuration takeover information based on, and a process of stopping the pre-update module is executed. Further, when the module of the pre-update program 400 is the second type of program module, the CPU 241 starts the corresponding module of the update program 430 after stopping the module, and includes the started module in the start setting information. Execute the setting process based on the setting. As a result, the first type of program module is updated without stopping. Therefore, the control program can be updated without stopping the function of the OLT 11.

  The first type of program module is a program module that can be set by the setting information stored in the temporary memory 243, and the second type of program module is a non-transitory memory 242. May be a program module set by the setting information stored in the. Thereby, the first type of module can be set by the configuration inheritance information based on the operation setting information 450 stored in the temporary memory 243, and the second type of module can be set by the non-transitory memory 242. Can be set based on the startup setting information 350 stored in the.

  In addition, the first type of program module may be a program module that executes communication control, and the second type of program module may be a program module that executes processing other than communication control. Thus, the control program can be updated without stopping communication control.

  Further, difference information different from the activation setting information 350 in the operation setting information 450 may be copied to the activation setting information 350. Thus, the operation setting information 450 and the start setting information 350 can be matched without having to copy all of the operation setting information 450 to the start setting information 350 at once.

  Further, when a predetermined update condition is satisfied, a process of copying a part or all of the operation setting information 450 to the activation setting information 350 may be executed. Thus, the update of the control program can be started when the update condition is satisfied.

  The update condition is determined in advance that the difference between the operation setting information 450 and the activation setting information 350 is equal to or more than a predetermined amount, that the operation setting information 450 is changed, that an update instruction of the control program 300 is given, and that the update condition is predetermined. The update time may be at least one of the following: information that belongs to a specific category among information that belongs to a plurality of categories included in the operation setting information 450 is changed. Thereby, various conditions can be set as update conditions.

  If an abnormality is detected while the control program is being updated, after stopping all operating modules, each of the modules of the pre-update program 400 is activated, and the activated modules are determined based on the activation setting information 350. An abnormality monitoring process to be set may be executed. Thus, when an abnormality occurs in the OLT 11, the control program 300 before the update can be returned to recover from the abnormality.

  The abnormality may include a communication error. If the control program is not properly updated, normal communication may not be performed and a communication error may occur. If a communication error occurs, there is a possibility that the communication error can be resolved by returning to the control program before the update.

[6. Supplementary note]
The embodiment disclosed this time is an example in all aspects and is not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the embodiments described above, and includes any modifications within the scope and meaning equivalent to the terms of the claims.

10 communication system 11 station side device (communication device)
REFERENCE SIGNS LIST 12 home-side device 13 PON line 14 optical splitter 15 trunk optical fiber 16 branch optical fiber 21 optical transceiver 22 PON processing unit 23 L2 switch 24 control unit 25 external device 26 communication interface 50 host network 241 CPU
242 Non-transitory memory 243 Transient memory 300, 330, 400, 430 Control program 300_1, 300_2, 300_3, ... Program module 330_1, 330_2, 330_3, ... Program module 350 Start setting information 370 Update setting program 400_1, 400_2, 400_3, ... Program module 430_1, 430_2, 430_3, ... Program module 450 Operation setting information

Claims (10)

A non-transitory memory storing start setting information, which is setting information referred to by the first type program module and the second type program module included in the control program for communication during the start processing;
A temporary memory storing operation setting information that is setting information referred to during operation of the first type of program module and the second type of program module;
A processor,
With
The processor, when updating the control program while operating its own device,
A process of copying a part or all of the operation setting information to the start setting information;
A process of setting the updated first type program module based on the operation setting information;
A process of setting the updated second type of program module based on the start setting information in which part or all of the operation setting information is copied;
Run,
Communication device. The processor, when updating the first type of program module,
A process of activating the updated first-type program module before stopping the first-type program module before the update;
A process of setting the updated first type program module based on the operation setting information;
Stopping the first type of program module before the update;
Run
The processor, when updating the second type of program module,
Stopping the second type of program module before updating;
A process of activating the second type of program module after the update after stopping the second type of program module before the update;
A process of setting the updated second type program module based on the start setting information in which part or all of the operation setting information is copied;
Run,
The communication device according to claim 1. The first type of program module is a program module that can be set by setting information stored in the temporary memory,
The second type of program module is a program module set by setting information stored in the non-transitory memory.
The communication device according to claim 1. The first type of program module is a program module that executes communication control.
The second type of program module is a program module that executes processing other than control of communication.
The communication device according to claim 1. The copying process is a process of copying information that is different from the activation setting information in the operation setting information to the activation setting information.
The communication device according to claim 1. The processor executes the process of copying when a predetermined update condition is satisfied,
The communication device according to claim 1. The update condition is that a difference between the operation setting information and the activation setting information is equal to or more than a predetermined amount, that the operation setting information is changed, an update instruction of a control program is given, and a predetermined update is performed. At least one of reaching a time and changing information belonging to a specific class among information belonging to a plurality of classes included in the operation setting information.
The communication device according to claim 6. If the processor detects an abnormality while the control program is being updated, after stopping all of the operating program modules, the processor activates each of the program modules before the update, and starts the activated program module before the update. Performing a process of setting the program module of the based on the startup setting information,
The communication device according to claim 1. The abnormality includes a communication error,
The communication device according to claim 8. A non-transitory memory storing start setting information, which is setting information referred to by the first type program module and the second type program module included in the control program for communication during the start processing, A method for setting a communication device, comprising: a temporary memory for storing operation setting information that is setting information referred to during operation of a first type of program module and the second type of program module; and a processor. So,
When updating the control program while operating the communication device,
The processor copies a part or all of the operation setting information to the activation setting information,
The processor sets the updated first type of program module based on the operation setting information,
The processor sets the updated second type of program module based on the start setting information in which part or all of the operation setting information is copied,
Communication device setting method.

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