Method and system for recovering configuration of separated optical line terminal and access method

Abstract

The invention relates to the field of management of optical line terminal equipment, in particular to a method and a system for recovering configuration of a separated optical line terminal and an access method, which are used for detecting the connection state of the separated optical line terminal equipment and the connection state of a main control system. And recovering the configuration and the service channel of the separated optical line terminal equipment according to the connection state, so that the configuration of the separated optical line terminal equipment can be automatically recovered without manual intervention, and a guarantee is provided for network services deployed by using the separated optical line terminal equipment.

Description

Technical Field

[0001] The present invention relates to the field of optical line terminal equipment management, and more specifically, to a configuration method, system and access method for a recovery split optical line terminal. Background Art

[0002] For the split optical line terminal equipment (LeafOLT), in order to save costs, LeafOLT does not have an additional CPU to achieve autonomous management. Its management and storage of configuration information are centralized on the main control system (Spine OLT), including the storage of configuration information, the recording of operation information, the distribution of PON and ONU configurations, etc. In addition, LeafOLT is a relatively independent subsystem, which can run independently after being separated from the control of Spine OLT, which brings certain challenges to the management of LeafOLT, especially the problems of configuration asynchrony and configuration recovery after disconnection. Once LeafOLT is disconnected from Spine OLT or restarted unexpectedly, its configuration will be out of sync or lost. Even if the connection is restored, it cannot autonomously restore the original configuration and keep in sync with Spine OLT. For this situation, the existing technology and processing methods are relatively simple and inflexible, such as deleting the configuration information of the LeafOLT on SpineOLT and adding it again, and manually re-issuing the configuration for a single PON port or a single ONU of LeafOLT. Summary of the invention

[0003] In order to overcome at least one of the defects of the prior art, the present invention provides a configuration method, system and access method of a recovery split optical line terminal.

[0004] The present invention aims to solve the above technical problems at least to a certain extent.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] A method for restoring the configuration of a split optical line terminal device comprises the following steps:

[0007] S1: connects the split optical line terminal equipment and the main control system;

[0008] S2: Detecting the connection status of the split optical line terminal device;

[0009] S3: Detecting the connection status of the main control system;

[0010] S4: restoring the configuration file of the main control system to the configuration of the separate optical line terminal device according to the connection status of the separate optical line terminal device and the connection status of the main control system.

[0011] Further, in step S1, the connecting of the separate optical line terminal device and the main control system includes:

[0012] The split optical line terminal equipment is connected to the main control system through in-band management.

[0013] Further, step S2, detecting the connection status of the separate optical line terminal device, includes:

[0014] S2.1: registering a callback function, wherein the callback function records the current connection status and the last connection status of the split optical line terminal device;

[0015] S2.2: The main control system obtains the connection status of the split optical line terminal device through a callback function.

[0016] Furthermore, the connection status between the separate optical line terminal equipment and the main control system includes a first connection status and a non-first connection status.

[0017] Further, step S4, restoring the configuration file of the main control system to the configuration of the separate optical line terminal device according to the connection state of the separate optical line terminal device and the connection state of the main control system, includes:

[0018] If the main control system and the separate optical line terminal device are connected for the first time, the configuration file of the main control system is restored to the configuration of the separate optical line terminal device using the first restoration method;

[0019] If the main control system and the separate optical line terminal device are not connected for the first time, the configuration file of the main control system is restored to the configuration of the separate optical line terminal device using the second restoration method;

[0020] If the main control system is not connected for the first time and the separate optical line terminal device is connected for the first time, the configuration file of the main control system is restored to the configuration of the separate optical line terminal device by using the third restoration method;

[0021] If the main control system is connected for the first time and the separate optical line terminal device is not connected for the first time, the fourth restoration method is used to restore the configuration file of the main control system to the separate optical line terminal device configuration.

[0022] Further, the first restoration method includes: directly restoring the configuration file of the main control system to the separate optical line terminal device configuration;

[0023] The second recovery method includes: comparing the state information of the main control system with the state information of the separate optical line terminal device, and synchronizing the configuration information of the separate optical line terminal device to the main control system;

[0024] The third restoration method includes: initializing the configuration data of the application layer of the main control system, and restoring the configuration file of the main control system to the split optical line terminal device configuration;

[0025] The fourth recovery method includes: the main control system sends a restart instruction to the separate optical line terminal device, and after the separate optical line terminal device restarts, the configuration data of the main control system application layer is cleared, the configuration file of the main control system is reloaded and restored to the separate optical line terminal device.

[0026] Further, comparing the status information of the main control system with the status information of the separate optical line terminal device, and synchronizing the configuration file on the main control system to the separate optical line terminal device, includes:

[0027] Traverse the ID of the optical network unit of the passive optical network interface of the separate optical line terminal device, obtain the status information of the separate optical line terminal device, compare the status information of the separate optical line terminal device with the status information recorded locally by the main control system, if the status information of the main control system is inconsistent with the status information of the separate optical line terminal device, call the function processing interface of the passive optical network and the optical network unit on the main control system, synchronize the status information of the optical network unit of the passive optical network interface recorded by the separate optical line terminal to the main control system, if the status information of the main control system is consistent with the status information of the separate optical line terminal device, do not process the optical network unit of the passive optical network interface, and continue to traverse the next optical network unit.

[0028] A method for accessing a separate optical line terminal device, applied to the method for restoring the configuration of the separate optical line terminal device, comprising:

[0029] Detecting the connection status of the main control system and the separate optical line terminal device. If the main control system and the separate optical line terminal device are connected for the first time, the main control system reads the content of the configuration file to be restored, and restores the configuration to the separate optical line terminal device by issuing instructions;

[0030] If the main control system and the separate optical line terminal device are not connected for the first time, the state information of the main control system is compared with the state information of the separate optical line terminal device, and the configuration information of the separate optical line terminal device is synchronized to the main control system;

[0031] If the main control system is not connected for the first time and the separated optical line terminal device is connected for the first time, the configuration data of the application layer of the main control system is initialized, and the main control system synchronizes the content of the configuration file to the separated optical line terminal device by issuing instructions;

[0032] If the main control system is connected for the first time and the separated optical line terminal device is not connected for the first time, the main control system sends a restart command to the separated optical line terminal device. After the separated optical line terminal device is restarted, the configuration data of the application layer of the main control system is initialized, and the main control system synchronizes the contents of the configuration file to the separated optical line terminal device by issuing commands.

[0033] A main control system access method, applied to the recovery separation optical line terminal equipment configuration method, comprising:

[0034] Detecting the connection status of the main control system and the separate optical line terminal device. If the main control system and the separate optical line terminal device are connected for the first time, the main control system reads the content of the configuration file to be restored, and restores the configuration to the separate optical line terminal device by issuing instructions;

[0035] If the main control system and the separate optical line terminal device are not connected for the first time, the state information of the main control system is compared with the state information of the separate optical line terminal device, and the configuration information of the separate optical line terminal device is synchronized to the main control system;

[0036] If the main control system is not connected for the first time and the separated optical line terminal device is connected for the first time, the main control system clears the configuration data of the application layer, and the main control system synchronizes the content of the configuration file to the separated optical line terminal device by issuing instructions;

[0037] If the main control system is connected for the first time and the separated optical line terminal device is not connected for the first time, the main control system sends a restart command to the separated optical line terminal device. After the separated optical line terminal device is restarted, the main control system clears the configuration data of the application layer, and the main control system synchronizes the contents of the configuration file to the separated optical line terminal device by issuing commands.

[0038] A recovery separation optical line terminal equipment configuration system, applied to the recovery separation optical line terminal equipment configuration method, comprising:

[0039] A connection module, used to connect the split optical line terminal equipment and the main control system;

[0040] A separate optical line terminal device detection module, used to detect the connection status of the separate optical line terminal device;

[0041] A main control system detection module, used to detect the connection status of the main control system;

[0042] The configuration recovery module is used to restore the configuration file of the main control system to the separate optical line terminal device configuration according to the connection status of the separate optical line terminal device and the connection status of the main control system.

[0043] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0044] The present invention detects the connection status of the separate optical line terminal device and the connection status of the main control system, and is divided into four processing modes according to the connection status. The four processing modes are used to restore the configuration and service channel of the separate optical line terminal device, which can effectively reduce the time for network traffic recovery after the separate optical line terminal device is disconnected from the main control system, and provides a guarantee for network quality service. During the configuration recovery period, the present invention does not need to rely on manual access, and can independently perform configuration recovery, thereby reducing operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A flow chart of a method for configuring a recovery split optical line terminal device according to the present invention;

[0046] Figure 2 This is a flow chart of the method for configuring a recovery split optical line terminal device according to this embodiment;

[0047] Figure 3 This is a structural diagram of the recovery separation optical line terminal equipment configuration system described in the present invention. DETAILED DESCRIPTION

[0048] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0049] In order to better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0050] It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0051] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0052] Example 1

[0053] A method for restoring a configuration of a split optical line terminal device, such as Figure 1 As shown, the following steps are included:

[0054] S1: connects the split optical line terminal equipment and the main control system;

[0055] S2: Detecting the connection status of the split optical line terminal device;

[0056] S3: Detecting the connection status of the main control system;

[0057] S4: restoring the configuration file of the main control system to the configuration of the separate optical line terminal device according to the connection status of the separate optical line terminal device and the connection status of the main control system.

[0058] During the specific implementation process, the connection status of the separate optical line terminal equipment and the connection status of the main control system are detected, and multiple combinations of two states of the two devices are obtained. By classifying and processing the multiple combinations, the time for network traffic recovery after the separate optical line terminal equipment is disconnected from the main control system is effectively reduced, thereby providing guarantee for network quality service.

[0059] Example 2

[0060] This embodiment further discloses the following contents based on the embodiment 1:

[0061] Step S1, connecting the split optical line terminal device and the main control system, comprises:

[0062] The split optical line terminal equipment is connected to the main control system through in-band management.

[0063] In a specific implementation process, the split optical line terminal device is connected to the main control system through a network, such as a TCP connection, in a band management manner.

[0064] Step S2, detecting the connection status of the split optical line terminal device, includes:

[0065] S2.1: registering a callback function, wherein the callback function records the current connection status and the last connection status of the split optical line terminal device;

[0066] S2.2: The main control system obtains the connection status of the split optical line terminal device through a callback function.

[0067] In the specific implementation process, when the PON chip of the separate optical line terminal device is connected through in-band management, the status data of the PON chip after the successful connection can be obtained by registering a callback function, which includes data that can determine whether the separate optical line terminal device is connected for the first time. According to this data, the target separate optical line terminal device is divided into two states: Stand-By and Non-Stand-By.

[0068] Example 3

[0069] This embodiment further discloses the following contents based on Embodiments 1 and 2:

[0070] The connection state between the separate optical line terminal equipment and the main control system includes a first connection state and a non-first connection state.

[0071] For Spine OLT, a special data structure is defined, which can record whether the Spine OLT is connected to the current Leaf OLT for the first time. According to this record, it can be divided into two states: Stand-By and Non-Stand-By. When Leaf OLT is connected to Spine OLT, the status of Leaf OLT and Spine OLT can be known at the same time. There are four processing methods according to the status, namely:

[0072] Leaf OLT is Non-Stand-By, and Spine OLT is Non-Stand-By;

[0073] Leaf OLT is Non-Stand-By, and Spine OLT is Stand-By;

[0074] Leaf OLT is Stand-By, Spine OLT is Stand-By;

[0075] Leaf OLT is Stand-By, and Spine OLT is Non-Stand-By;

[0076] By executing the corresponding preset processing for these four situations, the configuration and service channel of the LeafOLT can be quickly restored.

[0077] Example 4

[0078] This embodiment further discloses the following contents based on Embodiments 1, 2 and 3:

[0079] Step S4, restoring the configuration file of the main control system to the configuration of the separate optical line terminal device according to the connection state of the separate optical line terminal device and the connection state of the main control system, comprises:

[0080] If the main control system and the separate optical line terminal device are connected for the first time, the configuration file of the main control system is restored to the configuration of the separate optical line terminal device using the first restoration method;

[0081] If the main control system and the separate optical line terminal device are not connected for the first time, the configuration file of the main control system is restored to the configuration of the separate optical line terminal device using the second restoration method;

[0082] If the main control system is not connected for the first time and the separate optical line terminal device is connected for the first time, the configuration file of the main control system is restored to the configuration of the separate optical line terminal device by using the third restoration method;

[0083] If the main control system is connected for the first time and the separate optical line terminal device is not connected for the first time, the fourth restoration method is used to restore the configuration file of the main control system to the separate optical line terminal device configuration.

[0084] The first restoration method includes: directly restoring the configuration file of the main control system to the split optical line terminal device configuration;

[0085] The second recovery method includes: comparing the state information of the main control system with the state information of the separate optical line terminal device, and synchronizing the configuration information of the separate optical line terminal device to the main control system;

[0086] The third restoration method includes: initializing the configuration data of the application layer of the main control system, and restoring the configuration file of the main control system to the split optical line terminal device configuration;

[0087] The fourth recovery method includes: the main control system sends a restart instruction to the separate optical line terminal device, and after the separate optical line terminal device restarts, the configuration data of the main control system application layer is cleared, the configuration file of the main control system is reloaded and restored to the separate optical line terminal device.

[0088] like Figure 2 As shown, in the specific implementation process, according to the two devices and two states, a total of four combinations are processed as follows:

[0089] First recovery method: If LeafOLT is Non-Stand-By and Spine OLT is Non-Stand-By, both are connected for the first time, and both LeafOLT and Spine OLT are in the initialization state. Directly restore the Spine OLT configuration file to the LeafOLT configuration.

[0090] The third recovery method: If LeafOLT is Non-Stand-By and Spine OLT is Stand-By. This means that LeafOLT has been restarted and its configuration has been lost, but the configuration on Spine OLT still exists. Directly reading the configuration file to load the configuration will inevitably lead to a conflict with the existing configuration. To resolve this conflict, the present invention first clears the configuration data of the Spine OLT application layer and restores the relevant data structures such as PON and ONU to the initialized state. At this time, the data on the Spine OLT is the same as the Non-Stand-By state, which is the initialized state. Then the configuration file is directly read to load the configuration, thereby realizing the LeafOLT configuration recovery.

[0091] The second recovery method: If LeafOLT is Stand-By, Spine OLT is Stand-By. This means that the two have established a connection, but the connection was disconnected due to network quality or link quality failure. Now they are reconnected. Both have runtime data, and it is necessary to consider synchronizing the two. Because Leaf OLT only has data related to PON and ONU, it is necessary to traverse all ONU IDs of all PON ports to obtain the status recorded on the LeafPON chip and compare it with the status recorded locally in Spine OLT. If there is inconsistency, call the relevant processing interfaces for PON port Up, Down, ONU Online, and Offline on Spine OLT, so as to synchronize the data status related to PON and ONU of LeafOLT on Spine OLT.

[0092] The fourth recovery method is that LeafOLT is Stand-By and Spine OLT is Non-Stand-By. This means that the two have established a connection, but Spine OLT has been restarted due to unexpected power outages, upgrades, manual restarts, etc., and Spine OLT has lost the operating data configuration of LeafOLT. In this case, Spine OLT sends a restart command to LeafOLT. After the separated optical line terminal device is restarted, the Spine OLT status is non-first connection, and the separated optical line terminal device is first connection. The configuration file is directly read to load the configuration, thereby realizing configuration recovery.

[0093] The step of comparing the status information of the main control system with the status information of the separate optical line terminal device and synchronizing the configuration file on the main control system to the separate optical line terminal device includes:

[0094] Traverse the ID of the optical network unit of the passive optical network interface of the separate optical line terminal device, obtain the status information of the separate optical line terminal device, compare the status information of the separate optical line terminal device with the status information recorded locally by the main control system, if the status information of the main control system is inconsistent with the status information of the separate optical line terminal device, call the function processing interface of the passive optical network and the optical network unit on the main control system, synchronize the status information of the optical network unit of the passive optical network interface recorded by the separate optical line terminal to the main control system, if the status information of the main control system is consistent with the status information of the separate optical line terminal device, do not process the optical network unit of the passive optical network interface, and continue to traverse the next optical network unit.

[0095] Example 5

[0096] This embodiment, based on Embodiments 1, 2, 3 and 4, continues to disclose the following contents:

[0097] A method for accessing a separate optical line terminal device, applied to the method for restoring the configuration of the separate optical line terminal device, comprising:

[0098] Detecting the connection status of the main control system and the separate optical line terminal device. If the main control system and the separate optical line terminal device are connected for the first time, the main control system reads the content of the configuration file to be restored, and restores the configuration to the separate optical line terminal device by issuing instructions;

[0099] If the main control system and the separate optical line terminal device are not connected for the first time, the state information of the main control system is compared with the state information of the separate optical line terminal device, and the configuration information of the separate optical line terminal device is synchronized to the main control system;

[0100] If the main control system is not connected for the first time and the separated optical line terminal device is connected for the first time, the configuration data of the application layer of the main control system is initialized, and the main control system synchronizes the content of the configuration file to the separated optical line terminal device by issuing instructions;

[0101] If the main control system is connected for the first time and the separated optical line terminal device is not connected for the first time, the main control system sends a restart command to the separated optical line terminal device. After the separated optical line terminal device is restarted, the configuration data of the application layer of the main control system is initialized, and the main control system synchronizes the contents of the configuration file to the separated optical line terminal device by issuing commands.

[0102] A main control system access method, applied to the recovery separation optical line terminal equipment configuration method, comprising:

[0103] Detecting the connection status of the main control system and the separate optical line terminal device. If the main control system and the separate optical line terminal device are connected for the first time, the main control system reads the content of the configuration file to be restored, and restores the configuration to the separate optical line terminal device by issuing instructions;

[0104] If the main control system and the separate optical line terminal device are not connected for the first time, the state information of the main control system is compared with the state information of the separate optical line terminal device, and the configuration information of the separate optical line terminal device is synchronized to the main control system;

[0105] If the main control system is not connected for the first time and the separated optical line terminal device is connected for the first time, the main control system clears the configuration data of the application layer, and the main control system synchronizes the content of the configuration file to the separated optical line terminal device by issuing instructions;

[0106] If the main control system is connected for the first time and the separate optical line terminal device is not connected for the first time, the main control system sends a restart command to the separate optical line terminal device. After the separate optical line terminal device restarts, the main control system clears the configuration data of the application layer and resynchronizes the contents of the configuration file to the separate optical line terminal device by issuing commands.

[0107] A system for recovering a separate optical line terminal device configuration, such as Figure 3 As shown, the configuration method applied to the recovery separation optical line terminal device includes:

[0108] A connection module, used to connect the split optical line terminal equipment and the main control system;

[0109] A separate optical line terminal device detection module, used to detect the connection status of the separate optical line terminal device;

[0110] A main control system detection module, used to detect the connection status of the main control system;

[0111] The configuration recovery module is used to restore the configuration file of the main control system to the separate optical line terminal device configuration according to the connection status of the separate optical line terminal device and the connection status of the main control system.

[0112] The same or similar reference numerals correspond to the same or similar components;

[0113] The terms used in the drawings to describe positional relationships are only used for illustrative purposes and should not be construed as limiting this patent;

[0114] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for restoring a split optical line terminal device configuration, characterized in that: The following steps are involved: S1: connects the split optical line terminal equipment and the main control system; S2: Detecting the connection status of the split optical line terminal device; S3: Detecting the connection status of the main control system; S4: restoring the configuration file of the main control system to the configuration of the separate optical line terminal device according to the connection status of the separate optical line terminal device and the connection status of the main control system.

2. The method for configuring a recovery split optical line terminal device according to claim 1, characterized in that: Step S1, connecting the split optical line terminal device and the main control system, comprises: The split optical line terminal equipment is connected to the main control system through in-band management.

3. The method for configuring a recovery split optical line terminal device according to claim 2, characterized in that: Step S2, detecting the connection status of the split optical line terminal device, includes: S2.1: registering a callback function, wherein the callback function records the connection status of the split optical line terminal device after the connection is successful; S2.2: The main control system obtains the connection status of the split optical line terminal device through a callback function.

4. The method for configuring a recovery split optical line terminal device according to claim 2, characterized in that: The connection state between the separate optical line terminal equipment and the main control system includes a first connection state and a non-first connection state.

5. The method for configuring a recovery split optical line terminal device according to claim 4, characterized in that: Step S4, restoring the configuration file of the main control system to the configuration of the separate optical line terminal device according to the connection state of the separate optical line terminal device and the connection state of the main control system, comprises: If the main control system and the separate optical line terminal device are connected for the first time, the configuration file of the main control system is restored to the configuration of the separate optical line terminal device using the first restoration method; If the main control system and the separate optical line terminal device are not connected for the first time, the configuration file of the main control system is restored to the configuration of the separate optical line terminal device using the second restoration method; If the main control system is not connected for the first time and the separate optical line terminal device is connected for the first time, the configuration file of the main control system is restored to the configuration of the separate optical line terminal device by using the third restoration method; If the main control system is connected for the first time and the separate optical line terminal device is not connected for the first time, the fourth restoration method is used to restore the configuration file of the main control system to the separate optical line terminal device configuration.

6. The method for configuring a recovery split optical line terminal device according to claim 5, characterized in that: The first restoration method includes: directly restoring the configuration file of the main control system to the split optical line terminal device configuration; The second recovery method includes: comparing the state information of the main control system with the state information of the separate optical line terminal device, and synchronizing the configuration information of the separate optical line terminal device to the main control system; The third restoration method includes: initializing the configuration data of the application layer of the main control system, and restoring the configuration file of the main control system to the split optical line terminal device configuration; The fourth recovery method includes: the main control system sends a restart instruction to the separate optical line terminal device, and after the separate optical line terminal device restarts, the configuration data of the main control system application layer is cleared, the configuration file of the main control system is reloaded and restored to the separate optical line terminal device.

7. The method for configuring a recovery split optical line terminal device according to claim 6, characterized in that: The step of comparing the status information of the main control system with the status information of the separate optical line terminal device and synchronizing the configuration file on the main control system to the separate optical line terminal device includes: Traverse the ID of the optical network unit of the passive optical network interface of the separate optical line terminal device, obtain the status information of the separate optical line terminal device, compare the status information of the separate optical line terminal device with the status information recorded locally by the main control system, if the status information of the main control system is inconsistent with the status information of the separate optical line terminal device, call the function processing interface of the passive optical network and the optical network unit on the main control system, synchronize the status information of the optical network unit of the passive optical network interface recorded by the separate optical line terminal to the main control system, if the status information of the main control system is consistent with the status information of the separate optical line terminal device, do not process the optical network unit of the passive optical network interface, and continue to traverse the next optical network unit.

8. A method for accessing a separate optical line terminal device, characterized in that: The method for restoring a split optical line terminal device configuration as claimed in any one of claims 1 to 7 comprises: Detecting the connection status of the main control system and the separate optical line terminal device. If the main control system and the separate optical line terminal device are connected for the first time, the main control system reads the content of the configuration file to be restored, and restores the configuration to the separate optical line terminal device by issuing instructions; If the main control system and the separate optical line terminal device are not connected for the first time, the state information of the main control system is compared with the state information of the separate optical line terminal device, and the configuration information of the separate optical line terminal device is synchronized to the main control system; If the main control system is not connected for the first time and the separated optical line terminal device is connected for the first time, the configuration data of the application layer of the main control system is initialized, and the main control system synchronizes the content of the configuration file to the separated optical line terminal device by issuing instructions; If the main control system is connected for the first time and the separated optical line terminal device is not connected for the first time, the main control system sends a restart command to the separated optical line terminal device. After the separated optical line terminal device is restarted, the configuration data of the application layer of the main control system is initialized, and the main control system synchronizes the contents of the configuration file to the separated optical line terminal device by issuing commands.

9. A method for accessing a main control system, characterized in that: The method for restoring a split optical line terminal device configuration as claimed in any one of claims 1 to 7 comprises: Detecting the connection status of the main control system and the separate optical line terminal device. If the main control system and the separate optical line terminal device are connected for the first time, the main control system reads the content of the configuration file to be restored, and restores the configuration to the separate optical line terminal device by issuing instructions; If the main control system and the separate optical line terminal device are not connected for the first time, the state information of the main control system is compared with the state information of the separate optical line terminal device, and the configuration information of the separate optical line terminal device is synchronized to the main control system; If the main control system is not connected for the first time and the separated optical line terminal device is connected for the first time, the main control system clears the configuration data of the application layer, and the main control system synchronizes the content of the configuration file to the separated optical line terminal device by issuing instructions; If the main control system is connected for the first time and the separated optical line terminal device is not connected for the first time, the main control system sends a restart command to the separated optical line terminal device. After the separated optical line terminal device is restarted, the main control system clears the configuration data of the application layer, and the main control system synchronizes the contents of the configuration file to the separated optical line terminal device by issuing commands.

10. A recovery split optical line terminal equipment configuration system, characterized in that: The method for restoring a split optical line terminal device configuration as claimed in any one of claims 1 to 7 comprises: A connection module, used for connecting the split optical line terminal equipment and the main control system; A separate optical line terminal device detection module, used to detect the connection status of the separate optical line terminal device; A main control system detection module, used to detect the connection status of the main control system; The configuration recovery module is used to restore the configuration file of the main control system to the separate optical line terminal device configuration according to the connection status of the separate optical line terminal device and the connection status of the main control system.

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