JP7087876B2 - Communication device and setting method of communication device - Google Patents

Description

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

Patent Document 1 discloses a network device that stores configuration information (running-config) currently in operation and configuration information (startup-config) that is valid at restart as configuration information of the network device. There is.

Japanese Unexamined Patent Publication No. 2010-21755

When updating the control program of the communication device, the communication device restarts its own device, expands the entire updated control program into RAM, which is a transient memory, and sets information (startup-config in Patent Document 1). Is read by the CPU to set the configuration of the entire control program after the update. While the communication device is restarted, the function of the communication device is stopped. However, in a communication device that requires high reliability, it is required that the function of the communication device is not stopped even while the control program is updated.

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

The communication device according to one aspect of the present invention is 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 process. A non-transient memory that stores the operation setting information, which is setting information that the first type program module and the second type program module refer to during operation, and a transient memory that stores the operation setting information. A processor is provided, and the processor copies a part or all of the operation setting information to the activation setting information when updating the control program while the own device is operating, and the operation setting information. Based on the process of setting the updated program module of the first type and the start setting information in which a part or all of the operation setting information is copied, the second type is updated. Executes the process of setting the program module of.

The setting method of the communication device according to one aspect of the present invention 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 startup process. A non-transient memory that stores startup setting information, and a transient memory that stores operation setting information that is setting information that the first type of program module and the second type of program module refer to during operation. A method of setting a communication device including a memory and a processor. When the control program is updated while the communication device is running, the processor activates a part or all of the operation setting information. Copied to the setting information, the processor set the updated program module of the first type based on the operation setting information, and the processor copied a part or all of the operation setting information. Based on the activation setting information, the updated program module of the second type is set.

The present invention can be realized not only as a communication device provided with a characteristic processing unit as described above, but also as a setting method of a communication device having such a characteristic process as a step, or to perform such a step on a computer. It can be realized as a computer program for execution. Further, a 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 function of the device.

It is a figure which shows an example of the whole structure of the communication system which concerns on embodiment. It is a block diagram which shows an example of the internal structure of the communication device (station side device) which concerns on embodiment. It is a schematic diagram which shows an example of the configuration of the non-transient memory and the transient memory immediately after the start of the control program. It is a schematic diagram which shows an example of the configuration of the non-transient memory and the transient memory when the setting information of the control program in operation is changed. It is a schematic diagram which shows an example of the configuration of a non-transient memory and a transient memory immediately after an update program is given to a communication device. It is a schematic diagram which shows an example of the configuration of the non-transient memory and the transient memory when the operation setting information is not copied to the start setting information. It is a schematic diagram which shows an example of the configuration of the non-transient memory and the transient memory when the operation setting information is copied to the start setting information. It is a flowchart which shows the procedure of the program update process in the communication apparatus which concerns on embodiment. It is a flowchart which shows the procedure of the non-stop update process in the communication apparatus which concerns on embodiment. It is a flowchart which shows the procedure of abnormality monitoring processing in the communication apparatus which concerns on embodiment.

<Outline of Embodiment of the present invention>
Hereinafter, the outlines of the embodiments of the present invention will be described in a list.
(1) The communication device according to the present embodiment is a start setting 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 process. A non-transient memory that stores information, and a transient memory that stores operation setting information that is setting information that the first type program module and the second type program module refer to during operation. , And the processor, when updating the control program while the own device is operating, a process of copying a part or all of the operation setting information to the activation setting information, and the operation setting. The second type of update based on the process of setting the updated program module of the first type based on the information and the start setting information in which a part or all of the operation setting information is copied. Executes the process of setting the type of program module. Thereby, when the control program is updated, each of the first type program module and the second type program module can be set without stopping the communication device. Further, since a 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 program modules. .. The "program module" here is an executable partial program and is an object module. Further, a "program" is a collection of a plurality of program modules connected to each other, and is an object program.

(2) Further, in the communication device according to the present embodiment, when the processor updates the program module of the first type, before stopping the program module of the first type before the update, after the update. The process of starting the first type of program module, the process of setting the first type of program module after the update based on the operation setting information, and the process of setting the first type of program before the update. When the processor updates the second type of program module by executing the process of stopping the module, the process of stopping the second type of program module before the update and the process of stopping the second type of program module before the update are executed. The above is based on the process of starting the updated second type of program module after stopping the two types of program modules and the start setting information in which a part or all of the operation setting information is copied. The process of setting the second type of program module after the update may be executed. 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 device.

(3) Further, in the communication device according to the present embodiment, the first type of program module is a program module that can be set by the setting information stored in the transient memory, and is the first type. The two types of program modules may be program modules set by the setting information stored in the non-transient memory. As a result, the first type of update module can be set based on the operation setting information stored in the transient memory, and the second type of update module can be started up stored in the non-transient memory. It can be set based on the setting information.

(4) Further, 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 other than communication control. It may be a program module that executes processing. As a result, the control program can be updated without stopping the control of communication.

(5) Further, in the communication device according to the present embodiment, the copying process may be a process of copying the operation setting information different from the activation setting information to the activation setting information. As a result, the operation setting information and the activation setting information can be matched without copying all the operation setting information to the activation setting information at once.

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

(7) Further, in the communication device according to the present embodiment, the update condition is that the difference between the operation setting information and the activation setting information is a predetermined amount or more, the operation setting information is changed, and control. A program update instruction is given, a predetermined update time is reached, and information belonging to a specific category among the information belonging to a plurality of categories included in the operation setting information is changed. There may be at least one. This makes it possible to set various conditions 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, after stopping all of the operating program modules, the processor before the update is described. You may start each of the program modules and execute the process of setting the started program module before the update based on the start setting information. As a result, when an abnormality occurs in the communication device, it is possible to recover from the abnormality by returning to the control program before the update.

(9) Further, in the communication device according to the present embodiment, the abnormality may include a communication error. If the control program is not updated properly, normal communication may not be performed and a communication error may occur. With the above configuration, if a communication error occurs, it may be possible to eliminate the communication error by returning to the control program before the update.

(10) The setting method of the communication device according to the present embodiment is the 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 startup process. A non-transient memory that stores certain startup setting information, and a temporary memory that stores operation setting information that is setting information that the first type of program module and the second type of program module refer to during operation. A method of setting a communication device including a sex memory and a processor, in which the processor updates a part or all of the operation setting information while the communication device is running. Copying to the startup setting information, the processor sets the updated program module of the first type based on the operation setting information, and the processor copies a part or all of the operation setting information. Based on the activation setting information, the updated second type program module is set. Thereby, when the control program is updated, each of the first type program module and the second type program module can be set without stopping the communication device. Further, since a 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 program modules. ..

<Details of the Embodiment of the present invention>
Hereinafter, the details of the embodiment of the present invention will be described with reference to the drawings. In addition, at least a part of the embodiments described below may be arbitrarily combined.

In the following embodiment, an example in which the communication device is a station-side device for optical communication will be described. 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 and a wired communication device.

[1. Communication system configuration]
FIG. 1 is a diagram showing an example of the overall configuration of the communication system according to the present embodiment. As shown in FIG. 1, the communication system 10 is an optical access system, and includes a station side device (OLT: Optical Network Unit) 11, a plurality of home side devices (ONU: Optical Line Terminal) 12, and a PON line 13. To prepare for.

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

A user communication device capable of Ethernet (registered trademark) communication can be connected to the 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 a 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 line optical fiber 15 and a plurality of branch line 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 branched by the optical splitter 14 through the trunk optical fiber 15 of the PON line 13. The branched optical signal is transmitted to each ONU 12 through the branch line optical fiber 16.

The optical signal transmitted from each ONU 12 is focused by the optical splitter 14 through the branch optical fiber 16. 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 branches 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 merge 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 is performed according to MPCP. Specifically, the OLT 11 calculates an upstream transmission start time and a transmission permission amount of the data stored inside the ONU 12 based on the control frame (report) transmitted from each ONU 12.

Next, the OLT 11 transmits a control frame (grant) into which the instruction signal is inserted to each ONU 12 via the PON line 13. Each ONU12 notifies the OLT11 of the length of the data in its own buffer in a report at the time specified by the grant. Each ONU 12 receives a grant into which an 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 the report.

[2. Internal configuration of OLT]
FIG. 2 is a block diagram showing 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 comprises an optical device (eg, a pluggable optical transceiver) that includes a circuit for transmitting and receiving optical signals. The optical transceiver 21 is optically connected to the trunk optical fiber 15 (see FIG. 1) and electrically connected to the PON processing unit 22.
The optical transceiver 21 converts optical signals and electrical signals into each other. That is, the optical transceiver 21 converts an uplink signal composed of an optical signal from the ONU 12 into an electric signal. The optical transceiver 21 converts a downlink signal composed of an electric signal from the PON processing unit 22 into an optical signal.

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

When the frame included in the uplink 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 downlink 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 comprises an integrated circuit that determines a transmission port according to the destination of the received frame of the L2 layer.
When the frame included in the downlink 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 its own device.

When the frame included in the uplink 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 made of a personal computer (PC) or the like.

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

The control program 300 is stored (installed) in the non-transient 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, ..., Nth module 300_N).

The activation setting information 350 is stored in the non-transient memory 242. The activation setting information 350 is setting information that is read out in the activation process 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 Nth module 300_N are read from the non-transient memory 242 and expanded in the transient memory 243. That is, the control program 300 is loaded into the transient memory 243 and stored in the transient memory 243 as the expanded control program 400. The control program 400 includes N program modules (first module 400_1, second module 400_2, third module 400_3, ..., Nth module 400_N).

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

The non-transient memory 242 stores an update setting program 370 for updating the control program and setting each program module. The OLT 11 is configured to include a computer, and the update of the control program of the OLT 11 and the setting function of each program module are performed by the CPU 241 executing the update setting program 370, which is a computer program stored in the storage device of the computer. It is 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 the program update process and the abnormality monitoring process as described later.

[3. Control program update]
The update of the control program in OLT 11 according to this embodiment will be described.

FIG. 3 is a schematic diagram showing an example of the configuration of the non-transient 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_1 is SV2, and the initial value of the parameter P3 for the third module 400_1 is SV1. It is SV3. P1 = SV1, P2 = SV2, P3 = SV3, ... Are stored in the activation setting information 350. In the start processing of the first module 400_1, the second module 400_2, the third module 400_3, ..., The CPU 241 reads the start setting information 350 and sets P1 = SV1, P2 = SV2, P3 = SV3, ... After the modules 400_1, 400_2, 400_3, ... Are set, the activation 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 showing an example of the configuration of the non-transient 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 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 transient memory 243 instead of the startup setting information 350 in the non-transient memory 242. Therefore, the new setting information of the control program 400 in operation is written in the operation setting information 450 instead of the activation 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, P3 = SV30. On the other hand, in the activation setting information 350, P1 = SV1, P2 = SV2, P3 = SV3. In this way, the operation setting information 450 and the start 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 its own device. In addition, the OLT 11 can also execute a normal update process of restarting its own device and updating the control program. When updating the control program, for example, a new control program (hereinafter referred to as "pre-update program") is updated from the server of the external device 25 or the upper network 50 while the pre-update control program (hereinafter referred to as "pre-update program") 400 is operating. , "Update program") is sent to OLT11.

FIG. 5 is a schematic diagram showing an example of the configuration of the non-transient 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-transient memory 242 while leaving the pre-update program 300. As a result, the pre-update program 300 and the update program 330 coexist in the non-transient memory 242.

FIG. 6 is a schematic diagram showing an example of the configuration of the non-transient 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 transient 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 an area different from the operation setting information 450 of the transient memory 243 as configuration takeover information, and the address of that area is the relevant area. Notify the module. The CPU 241 reads the setting information from the notified address and sets the first type of program module.

The first type of program module in the update program 430 is started in the state where the first type of program module in the pre-update program 400 is started. That is, in a state where the program module of the first type in the pre-update program 400 is expanded in the transient memory 243, the program module of the first type in the update program 430 is also expanded in the transient memory 243.

While the first type program module in the update program 430 is set by the configuration takeover 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 the first module and the 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 transient memory 243. It is stored as takeover information. Further, while the first module 400_1 is in operation, 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 executed at the same time. Similarly, while the second module 400_2 in the pre-update program 400 is operating, the configuration takeover information (setting value of P2) in which the second module 430_2 in the update program 430 is stored in an area different from the operation setting information 450. ). By doing so, one CPU 241 can update the first module and the second module without stopping the functions realized by the first module and the second module. After setting 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 of the transient 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 transient 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 setting the first type of program module, the address of the setting information of the module in the operation setting information 450 is notified to the module, and the setting information directly read from the operation setting information 450 is used. Modules may be set. That is, in the setting of the first module 430_1, the address of the set 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 set value of P1 at the address. Can be done. 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 set by the setting information stored in the non-transient memory 242. In the present embodiment, the CPU 241 reads the start setting information 350 from the non-transient memory 242 and sets the second type of program module.

After the second type of program module in the pre-update program 400 is stopped, the second type of program module in the update program 430 is started, and the module is set by the start setting information 350. That is, after the area in the transient memory 243 of the second type program module in the pre-update program 400 is released, the second type program module in the update program 430 is expanded in the transient memory 243. .. In the example of FIG. 6, the second type of program module is the 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 activation setting information 350 in the non-transient 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 the updated third module 430_3, which cannot be executed at the same time as the updated third module 400_3.

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, the processing related to the maintenance function of the OLT 11. Therefore, the second type of program module is updated without stopping the control of communication.

However, when the operation setting information 450 is changed, the start setting information 350 and the operation setting information 450 are in different states. Therefore, if each program module of the update program 430 is set 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 to start. Since it is set by the setting information obtained from the information 350, a setting inconsistency occurs between both modules. That is, the third module 430_3 needs to be set by P3 = SV30 included in the operation setting information 450, but is set by P3 = SV3 included in the activation setting information 350.

In the OLT 11 according to the present embodiment, before setting the updated program module, a 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 me. This makes it possible to prevent inconsistencies in the settings between the first type of program module and the second type of program module.

FIG. 7 is a schematic diagram showing an example of the configuration of the non-transient 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 start setting information 350. That is, the activation setting information 350 matches the operation setting information 450. When the setting of each program module of the update program 430 is performed in such a state, the inconsistency of the setting between the program module of the first type and the program module of the second type 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_1 is set by P2 = SV20 included in the operation setting information 450, and the third module 430_3 is set in the start setting information 350. It is set by included P3 = SV30.

[4. Operation in updating the control program of OLT11]
The operation of updating the control program in OLT 11 according to the present embodiment will be described.

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

In the program update process, the CPU 241 first determines whether or not the update condition is satisfied (step S101). The update condition is a condition for updating the control program 300. The update condition may be selected from the following conditions (1) to (5). Further, a plurality of conditions (1) to (5) may be combined as an update condition. For example, the fact that all of the plurality of conditions selected from (1) to (5) are satisfied may be regarded as the establishment of the update condition, or the plurality of conditions selected from (1) to (5) may be satisfied. If any one of them is satisfied, the renewal condition may be satisfied.
(1) The difference between the operation setting information 450 and the start setting information 350 is a predetermined amount or more.
(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) The predetermined update time is reached.
(5) Among the information belonging to a plurality of classifications included in the operation setting information 450, the information belonging to a specific classification is changed.

In (1), the difference is equal to or more than a predetermined amount, for example, the number of different set values between the operation setting information 450 and the start setting information 350 can be equal to or more than the predetermined value, and the data of different set values. The capacity can be set to a predetermined value or more. Further, in (3), the update instruction can be given from, for example, the server of the external device 25 or the upper network 50. Further, in (4), the nighttime time (for example, 2 o'clock) when the communication traffic is low 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 related to communication may be classified into "communication", and the setting information related to maintenance may be classified into "maintenance". If the information belonging to a specific classification (for example, "communication") is changed among the setting information classified in this way, the condition (5) is satisfied. Further, since the condition (2) and the condition (5) partially overlap, any one of the update conditions may be included.

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

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

When it is determined to execute the non-stop update process (YES in step S102), the CPU 241 executes the non-stop update process (step S103). If it is not determined to execute the non-stop update process (NO in step S102), the CPU 241 executes the 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 is completed, the CPU 241 ends the program update process.

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

In the non-stop update process, the CPU 241 first copies a part or all of the operation setting information 450 to the start setting information 350 (step S201). As a result, the start setting information 350 is aligned with the operation setting information 450. In this process, among the operation setting information 450, the difference information different from the activation setting information 350 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 in a state where the pre-update program 300 is stored in the non-transient memory 242 (step S202). That is, in the non-transient memory 242, the update program 330 is not overwritten on the pre-update program 300, but the update program 330 is added separately from the pre-update program 300.

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

Next, the CPU 241 may be set by the setting information stored in the transient memory 243 among the first module 400_1, the second module 400_2, the third module 400_3, ..., The Nth module 400_N of the pre-update program 400. Regarding the possible program module, that is, the first type of program module, the setting information (configuration takeover information) to be inherited from the module before the update to the module after the update is stored in the transient memory 243 (step S204). In this process, among the operation setting information 450, the setting information of the first type program is stored in the transient memory 243 as the configuration takeover information.

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

When N ≧ M (YES in step S206), the CPU 241 has whether or not there is setting information to be inherited from the M module before the update to the M module after the update, that is, the M module is of the first type. It is determined whether or not it is a program module (step S207).

When there is setting information inherited from the M module 400_M before the update to the M module 430_M after the update, that is, when the M module is the first type of program module (YES in step S207), the CPU 241 is updated. The M module 430_M of the update program 430 is started without stopping the M module 400_M of the previous program (step S208). That is, in the transient memory 243, the M module 430_M of the update program 430 is expanded while the M module 400_M of the pre-update program 400 is expanded.

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

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

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

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

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

The CPU 241 reads the setting information for the M module 430_M from the startup setting information 350, and sets the M module 430_M (step S213).

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

With the above, the setting is performed up to the Nth module. When M is larger than N (NO in step S206), the CPU 241 copies the start setting information 350 of the non-transient memory 242 to the operation setting information 450 of the transient memory 243 (step S215). As a result, the identity between the start setting information 350 and the operation setting information 450 at the time of starting the update program 430 is guaranteed. This completes the non-stop update process.

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

FIG. 10 is a flowchart showing the procedure of abnormality monitoring processing. The error 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 that occurs in the OLT 11, such as a processing abnormality in the control program and a communication error. In the abnormality monitoring process, the CPU 241 first determines whether or not an abnormality in the OLT 11 has been detected (step S301).

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

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

Next, the CPU 241 stops all the program modules in operation (step S303). Further, the CPU 241 activates all of the first module 400_1, the second module 400_2, the third module 400_3, ..., And the Nth module 400_N of the pre-update program 400 (step S304).

The CPU 241 reads the start setting information 350 from the non-transient memory 242, and starts all of the first module 400_1, the second module 400_1, the third module 400_3, ..., The Nth module 400_N of the pre-update program 400. (Step S305). This completes the error monitoring process.

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

With the above 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 start setting information when the CPU 241 updates the pre-update program 400 to the update program 430. do. Further, the CPU 241 sets the program module of the first type updated based on the operation setting information, and the second updated based on the start setting information in which a part or all of the operation setting information is copied. Executes the process of setting the type of program module. Thereby, when the control program is updated, each of the first type program module and the second type program module can be set without stopping the OLT11. Further, since a 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 program modules. ..

Further, when the module of the pre-update program 400 is the first type of program module, the CPU 241 starts the module of the corresponding update program 430 before stopping the module, and the started module is used as the operation setting information. Set by the configuration inheritance information based on, and execute the process to stop the module before update. Further, when the module of the pre-update program 400 is a second type of program module, the CPU 241 starts the module of the corresponding update program 430 after stopping the module, and uses the started module as the start setting information. Execute the process to be set based on. 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 transient memory 243, and the second type of program module is a non-transient memory 242. It may be a program module set by the setting information stored in. Thereby, the first type module can be set by the configuration takeover information based on the operation setting information 450 stored in the transient memory 243, and the second type module can be set by the non-transient memory 242. It can be set based on the activation setting information 350 stored in.

Further, 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. As a result, the control program can be updated without stopping the control of communication.

Further, the difference information of the operation setting information 450, which is different from the activation setting information 350, may be copied to the activation setting information 350. As a result, the operation setting information 450 and the start setting information 350 can be matched without copying 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. As a result, the update of the control program can be started when the update condition is satisfied.

Further, the update conditions are determined in advance that the difference between the operation setting information 450 and the start setting information 350 is a predetermined amount or more, the operation setting information 450 is changed, and the update instruction of the control program 300 is given. It may be at least one of reaching the update time and changing the information belonging to a specific classification among the information belonging to a plurality of classifications included in the operation setting information 450. This makes it possible to set various conditions as update conditions.

If an abnormality is detected while the control program is updated, all the running modules are stopped, each of the modules of the pre-update program 400 is started, and the started module is started based on the start setting information 350. You may execute the abnormality monitoring process to be set. As a result, when an abnormality occurs in the OLT 11, it is possible to recover from the abnormality by returning to the control program 300 before the update.

The anomaly may include a communication error. If the control program is not updated properly, normal communication may not be performed and a communication error may occur. If a communication error occurs, it may be possible to eliminate the communication error by returning to the control program before the update.

[6. Supplement]
The embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of rights of the present invention is shown by the scope of claims, not the embodiments described above, and includes the meaning equivalent to the scope of claims and all modifications within the scope thereof.

10 Communication system 11 Station side device (communication device)
12 Home-side equipment 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 Upper network 241 CPU
242 Non-transient 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 Startup 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-transient memory that stores startup setting information, 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 the startup process, and
A transient memory for storing operation setting information, which is setting information referred to by the first type program module and the second type program module during operation, and
With the processor
Equipped with
When the processor updates the control program while the own device is running, the processor updates the control program.
A process of copying a part or all of the operation setting information to the activation setting information,
The process of setting the updated program module of the first type based on the operation setting information, and
A process of setting an updated program module of the second type based on the start setting information in which a part or all of the operation setting information is copied.
To execute,
Communication device. When the processor updates the first type of program module,
Before stopping the program module of the first type before the update, the process of starting the program module of the first type after the update, and
The process of setting the first type of program module after the update based on the operation setting information, and
The process of stopping the first type of program module before the update, and
And run
When the processor updates the second type of program module,
The process of stopping the second type of program module before the update, and
After stopping the second type of program module before the update, the process of starting the second type of program module after the update, and
A process of setting a second type of program module after the update based on the start setting information in which a part or all of the operation setting information is copied.
To execute,
The communication device according to claim 1. The first type of program module is a program module that can be set by the setting information stored in the transient memory.
The second type of program module is a program module set by the setting information stored in the non-transient memory.
The communication device according to claim 1 or 2. 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 communication control.
The communication device according to any one of claims 1 to 3. The copying process is a process of copying information different from the activation setting information among the operation setting information to the activation setting information.
The communication device according to any one of claims 1 to 4. The processor executes the copying process when a predetermined update condition is satisfied.
The communication device according to any one of claims 1 to 5. The update conditions are that the difference between the operation setting information and the activation setting information is a predetermined amount or more, the operation setting information is changed, an update instruction of the control program is given, and a predetermined update. At least one of reaching the time and changing the information belonging to a specific classification among the information belonging to the plurality of classifications included in the operation setting information.
The communication device according to claim 6. When the processor detects an abnormality while the control program is updated, the processor stops all of the running program modules, then starts each of the program modules before the update, and is started before the update. Executes the process of setting the program module of
The communication device according to any one of claims 1 to 7. The abnormality includes a communication error.
The communication device according to claim 8. A non-transient memory for storing startup 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 startup process, and the above-mentioned A method of setting a communication device including a transient memory for storing operation setting information, which is setting information referred to by the first type of program module and the second type of program module during operation, and a processor. There,
When updating the control program while the communication device is operating,
The processor copies a part or all of the operation setting information to the activation setting information.
The processor sets up the updated program module of the first type based on the operation setting information.
The processor sets the updated program module of the second type based on the boot setting information in which a part or all of the operation setting information is copied.
How to set up the communication device.

Images