A method, system and access method for recovering a split optical line terminal configuration

Abstract

The present application relates to the field of optical line terminal device management, more particularly, to a kind of recovery split optical line terminal configuration method, system and access method, the present application detects the connection state of split optical line terminal device and the connection state of main control system, according to the connection state recovery split optical line terminal device configuration and service channel, the present application can be without manual intervention, independently restore the configuration of split optical line terminal device, provide guarantee for the network service deployed using split optical line terminal device.

Description

Technical Field

[0001] This invention relates to the field of optical line terminal equipment management, and more specifically, to a method, system, and access method for restoring the configuration of a split optical line terminal. Background Technology

[0002] For split optical line terminal equipment (LeafOLT), to save costs, LeafOLT does not have an additional CPU for autonomous management. Its management and configuration information storage are centralized on the main control system (Spine OLT), including configuration information storage, operational information recording, and the distribution of PON and ONU configurations. Furthermore, LeafOLT is a relatively independent subsystem, capable of operating independently after being removed from Spine OLT control. This presents certain challenges for LeafOLT management, particularly regarding configuration asynchrony and recovery after disconnection. Once LeafOLT disconnects from Spine OLT or unexpectedly restarts, its configuration will become out of sync or be lost. Even after reconnection, it cannot autonomously restore the original configuration and synchronize with Spine OLT. Existing technologies and solutions for this situation are relatively simple and inflexible, such as deleting and re-adding the LeafOLT's configuration information on the Spine OLT, or manually re-distributing configurations for individual PON ports or individual ONUs of the LeafOLT. Summary of the Invention

[0003] To overcome at least one of the defects described in the prior art, the present invention provides a method, system, and access method for restoring the configuration of a split optical line terminal.

[0004] The present invention aims to solve the above-mentioned technical problems to at least some extent.

[0005] To solve the above-mentioned 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 equipment includes the following steps:

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

[0008] S2: Detect the connection status of the split optical line terminal equipment;

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

[0010] S4: Restore the configuration file of the main control system to the configuration of the split optical line terminal equipment according to the connection status of the split optical line terminal equipment and the connection status of the main control system.

[0011] Further, in step S1, the connection between the split optical line terminal equipment and the main control system includes:

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

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

[0014] S2.1: Register a callback function, which records the current connection status and the previous connection status of the split optical line terminal equipment;

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

[0016] Furthermore, the connection status of the split optical line terminal equipment and the main control system includes the initial connection status and non-initial connection status.

[0017] Further, step S4, restoring the configuration file of the main control system to the configuration of the split optical line terminal equipment based on the connection status of the split optical line terminal equipment and the connection status of the main control system, includes:

[0018] If both the main control system and the split optical line terminal equipment are being connected for the first time, the first recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment.

[0019] If neither the main control system nor the split optical line terminal equipment is being connected for the first time, the second recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment.

[0020] If the main control system is not being connected for the first time, but the split optical line terminal equipment is being connected for the first time, then the third recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment.

[0021] If the main control system is being connected for the first time, but the split optical line terminal equipment is not being connected for the first time, then the fourth recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment.

[0022] Furthermore, the first recovery method includes: directly restoring the configuration file of the main control system to the configuration of the split optical line terminal equipment;

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

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

[0025] The fourth recovery method includes: the main control system sends a restart command to the split optical line terminal equipment. After the split optical line terminal equipment restarts, it clears the configuration data of the main control system application layer, reloads the configuration file of the main control system, and restores it to the split optical line terminal equipment.

[0026] Furthermore, the step of comparing the status information of the main control system with the status information of the split optical line terminal equipment, and synchronizing the configuration file on the main control system to the split optical line terminal equipment, includes:

[0027] The system iterates through the IDs of the optical network units (ONUs) of the passive optical network interfaces (PAUs) of the split-line terminal equipment (SOPs), obtains the status information of the SOPs, and compares this status information with the status information recorded locally by the main control system. If the status information of the main control system and the SOPs are inconsistent, the system calls the function processing interface of the passive optical network and the ONUs on the main control system to synchronize the status information of the ONUs recorded by the SOPs to the main control system. If the status information of the main control system and the SOPs are consistent, no processing is performed on the ONUs of the passive optical network interface, and the system continues to iterate through the next ONU.

[0028] A method for accessing a split-type optical line terminal equipment (SLTE), applied to the method for restoring the configuration of the SLTE, includes:

[0029] The connection status of the main control system and the split optical line terminal equipment is detected. If both the main control system and the split optical line terminal equipment are connected for the first time, the main control system reads the contents of the configuration file to be restored and restores the configuration to the split optical line terminal equipment by issuing a command.

[0030] If neither the main control system nor the split optical line terminal equipment is being connected for the first time, the status information of the main control system will be compared with the status information of the split optical line terminal equipment, and the configuration information of the split optical line terminal equipment will be synchronized to the main control system.

[0031] If the main control system is not being connected for the first time, and the split optical line terminal equipment is being connected for the first time, then 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 split optical line terminal equipment by issuing instructions.

[0032] If the main control system is connecting for the first time and the split optical line terminal equipment is not connecting for the first time, the main control system sends a restart command to the split optical line terminal equipment. After the split optical line terminal equipment restarts, it initializes the configuration data of the application layer of the main control system and synchronizes the contents of the configuration file to the split optical line terminal equipment by issuing commands.

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

[0034] The connection status of the main control system and the split optical line terminal equipment is detected. If both the main control system and the split optical line terminal equipment are connected for the first time, the main control system reads the contents of the configuration file to be restored and restores the configuration to the split optical line terminal equipment by issuing a command.

[0035] If neither the main control system nor the split optical line terminal equipment is being connected for the first time, the status information of the main control system will be compared with the status information of the split optical line terminal equipment, and the configuration information of the split optical line terminal equipment will be synchronized to the main control system.

[0036] If the main control system is not connecting for the first time, and the split optical line terminal equipment is connecting for the first time, the main control system will clear the configuration data of the application layer and synchronize the contents of the configuration file to the split optical line terminal equipment by issuing instructions.

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

[0038] A system for restoring the configuration of a split-type optical line terminal equipment (PLC) is applied to the method for restoring the configuration of the PLC, comprising:

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

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

[0041] The main control system detection module is 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 configuration of the split optical line terminal equipment based on the connection status of the split optical line terminal equipment and the connection status of the main control system.

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

[0044] This invention detects the connection status of the split optical line terminal equipment and the main control system, and divides them into four processing methods according to the connection status. The configuration of the split optical line terminal equipment and the service channel are restored using the four processing methods. This can effectively reduce the network traffic recovery time after the split optical line terminal equipment and the main control system are disconnected, and provide a guarantee for network quality service. During the configuration recovery period, this invention does not require manual access and can perform configuration recovery autonomously, reducing operation and maintenance costs. Attached Figure Description

[0045] Figure 1 This is a flowchart of the configuration method for the recovery split optical line terminal equipment described in this invention;

[0046] Figure 2 This is a flowchart of the method for configuring a recovery split optical line terminal equipment as described in this embodiment;

[0047] Figure 3 This is a system structure diagram of the recovery split optical line terminal equipment described in this invention. Detailed Implementation

[0048] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0049] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions;

[0050] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings.

[0051] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0052] Example 1

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

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

[0055] S2: Detect the connection status of the split optical line terminal equipment;

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

[0057] S4: Restore the configuration file of the main control system to the configuration of the split optical line terminal equipment according to the connection status of the split optical line terminal equipment and the connection status of the main control system.

[0058] In the specific implementation process, the connection status of the split optical line terminal equipment and the connection status of the main control system are detected. Each of the two types of equipment has two states, resulting in multiple combinations. By classifying and processing these multiple combinations, the network traffic recovery time after the split optical line terminal equipment and the main control system are effectively reduced, thus ensuring network quality service.

[0059] Example 2

[0060] This embodiment, based on Embodiment 1, continues to disclose the following content:

[0061] Step S1, the connection between the split optical line terminal equipment and the main control system includes:

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

[0063] In practice, the split optical line terminal equipment is connected to the main control system via a network, such as a TCP connection, using an in-band management method.

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

[0065] S2.1: Register a callback function, which records the current connection status and the previous connection status of the split optical line terminal equipment;

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

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

[0068] Example 3

[0069] Based on Examples 1 and 2, this embodiment continues to disclose the following content:

[0070] The connection status of the split optical line terminal equipment and the main control system includes the initial connection status and the non-initial connection status.

[0071] For the Spine OLT, a dedicated data structure is defined to record whether this is the first connection of the Spine OLT to the current Leaf OLT. Based on this record, it can be divided into two states: Stand-By and Non-Stand-By. When the Leaf OLT connects to the Spine OLT, it can simultaneously know the states of both the Leaf OLT and the Spine OLT, and handle them in four ways according to the states:

[0072] LeafOLT stands for Non-Stand-By, and Spine OLT stands for Non-Stand-By.

[0073] LeafOLT stands for Non-Stand-By, and Spine OLT stands for Stand-By.

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

[0075] LeafOLT stands for Stand-By, and Spine OLT stands for Non-Stand-By.

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

[0077] Example 4

[0078] Based on Examples 1, 2, and 3, this embodiment continues to disclose the following content:

[0079] Step S4, based on the connection status of the split optical line terminal equipment and the connection status of the main control system, restore the configuration file of the main control system to the configuration of the split optical line terminal equipment, including:

[0080] If both the main control system and the split optical line terminal equipment are being connected for the first time, the first recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment.

[0081] If neither the main control system nor the split optical line terminal equipment is being connected for the first time, the second recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment.

[0082] If the main control system is not being connected for the first time, but the split optical line terminal equipment is being connected for the first time, then the third recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment.

[0083] If the main control system is being connected for the first time, but the split optical line terminal equipment is not being connected for the first time, then the fourth recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment.

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

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

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

[0087] The fourth recovery method includes: the main control system sends a restart command to the split optical line terminal equipment. After the split optical line terminal equipment restarts, it clears the configuration data of the main control system application layer, reloads the configuration file of the main control system, and restores it to the split optical line terminal equipment.

[0088] like Figure 2 As shown, in the specific implementation process, based on two states for each of the two devices, there are four combinations, which are handled as follows:

[0089] First recovery method: If both LeafOLT and Spine OLT are set to Non-Stand-By, and both are in their first connection, both LeafOLT and Spine OLT are in an initial state. Simply restore the Spine OLT configuration file to the LeafOLT configuration.

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

[0091] The second recovery method: If both LeafOLT and Spine OLT are Stand-By. This means that a connection was previously established, but was lost due to network or link quality issues. Now, they are reconnecting, and both contain runtime data, requiring synchronization. Since Leaf OLT only has PON and ONU-related data, the method involves iterating through all ONU IDs on all PON ports and comparing the status recorded on the LeafPON chip with the status recorded locally on the Spine OLT. If they are inconsistent, the relevant processing interfaces on the Spine OLT for PON port Up / Down and ONU Online / Offline are called. This synchronizes the PON and ONU-related data status of LeafOLT on the Spine OLT.

[0092] The fourth recovery method involves LeafOLT being set to Stand-By and Spine OLT to Non-Stand-By. This means that a connection was previously established between the two, but the Spine OLT restarted due to an unexpected power outage, upgrade, or manual restart, resulting in the loss of operational data and configuration information about LeafOLT. In this case, the Spine OLT sends a restart command to LeafOLT. After the split-line terminal equipment restarts, the Spine OLT is in a non-first-time connection state, while the split-line terminal equipment is in a first-time connection state. The configuration file is directly read and loaded, thus restoring the configuration.

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

[0094] The system iterates through the IDs of the optical network units (ONUs) of the passive optical network interfaces (PAUs) of the split-line terminal equipment (SOPs), obtains the status information of the SOPs, and compares this status information with the status information recorded locally by the main control system. If the status information of the main control system and the SOPs are inconsistent, the system calls the function processing interface of the passive optical network and the ONUs on the main control system to synchronize the status information of the ONUs recorded by the SOPs to the main control system. If the status information of the main control system and the SOPs are consistent, no processing is performed on the ONUs of the passive optical network interface, and the system continues to iterate through the next ONU.

[0095] Example 5

[0096] This embodiment, based on embodiments 1, 2, 3, and 4, further discloses the following content:

[0097] A method for accessing a split-type optical line terminal equipment (SLTE), applied to the method for restoring the configuration of the SLTE, includes:

[0098] The connection status of the main control system and the split optical line terminal equipment is detected. If both the main control system and the split optical line terminal equipment are connected for the first time, the main control system reads the contents of the configuration file to be restored and restores the configuration to the split optical line terminal equipment by issuing a command.

[0099] If neither the main control system nor the split optical line terminal equipment is being connected for the first time, the status information of the main control system will be compared with the status information of the split optical line terminal equipment, and the configuration information of the split optical line terminal equipment will be synchronized to the main control system.

[0100] If the main control system is not being connected for the first time, and the split optical line terminal equipment is being connected for the first time, then 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 split optical line terminal equipment by issuing instructions.

[0101] If the main control system is connecting for the first time and the split optical line terminal equipment is not connecting for the first time, the main control system sends a restart command to the split optical line terminal equipment. After the split optical line terminal equipment restarts, it initializes the configuration data of the application layer of the main control system and synchronizes the contents of the configuration file to the split optical line terminal equipment by issuing commands.

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

[0103] The connection status of the main control system and the split optical line terminal equipment is detected. If both the main control system and the split optical line terminal equipment are connected for the first time, the main control system reads the contents of the configuration file to be restored and restores the configuration to the split optical line terminal equipment by issuing a command.

[0104] If neither the main control system nor the split optical line terminal equipment is being connected for the first time, the status information of the main control system will be compared with the status information of the split optical line terminal equipment, and the configuration information of the split optical line terminal equipment will be synchronized to the main control system.

[0105] If the main control system is not connecting for the first time, and the split optical line terminal equipment is connecting for the first time, the main control system will clear the configuration data of the application layer and synchronize the contents of the configuration file to the split optical line terminal equipment by issuing instructions.

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

[0107] A system for restoring the configuration of split optical line terminal equipment, such as Figure 3 As shown, the configuration method applied to the recovery split optical line terminal equipment includes:

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

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

[0110] The main control system detection module is 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 configuration of the split optical line terminal equipment based on the connection status of the split optical line terminal equipment and the connection status of the main control system.

[0112] The same or similar labels correspond to the same or similar parts;

[0113] The terms used to describe positional relationships in the accompanying drawings are for illustrative purposes only 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 implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for restoring the configuration of a split optical line terminal equipment, characterized in that, Includes the following steps: S1: Connects the split optical line terminal equipment and the main control system; S2: Detect the connection status of the split optical line terminal equipment; S3: Detect the connection status of the main control system; S4: Restore the configuration file of the main control system to the configuration of the split optical line terminal equipment according to the connection status of the split optical line terminal equipment and the connection status of the main control system; The connection status of the split optical line terminal equipment and the main control system includes the initial connection status and the non-initial connection status; The feature is that step S4, restoring the configuration file of the main control system to the configuration of the split optical line terminal device according to the connection status of the split optical line terminal device and the connection status of the main control system, includes: if both the main control system and the split optical line terminal device are connected for the first time, then the first restoration method is used to restore the configuration file of the main control system to the configuration of the split optical line terminal device. If neither the main control system nor the split optical line terminal equipment is being connected for the first time, the second recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment. If the main control system is not being connected for the first time, but the split optical line terminal equipment is being connected for the first time, then the third recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment. If the main control system is being connected for the first time and the split optical line terminal equipment is not being connected for the first time, then the fourth recovery method will be used to restore the configuration file of the main control system to the configuration file of the split optical line terminal equipment. The first recovery method includes: directly restoring the configuration file of the main control system to the configuration of the split optical line terminal equipment; The second recovery method includes: comparing the status information of the main control system with the status information of the split optical line terminal equipment, and synchronizing the configuration information of the split optical line terminal equipment to the main control system; The third recovery method includes: initializing the configuration data of the main control system application layer and restoring the configuration file of the main control system to the configuration of the split optical line terminal equipment; The fourth recovery method includes: the main control system sends a restart command to the split optical line terminal equipment. After the split optical line terminal equipment restarts, it clears the configuration data of the main control system application layer, reloads the configuration file of the main control system, and restores it to the split optical line terminal equipment.

2. The method for configuring a recovery split optical line terminal equipment according to claim 1, characterized in that, Step S1, the connection between the split optical line terminal equipment and the main control system includes: 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 equipment according to claim 2, characterized in that, Step S2, detecting the connection status of the split optical line terminal equipment, including: S2.1: registering a callback function, the callback function recording the connection status after the split optical line terminal equipment is successfully connected; S2.2: The main control system obtains the connection status of the split optical line terminal equipment through a callback function.

4. The method for configuring a split optical line terminal equipment according to claim 1, characterized in that, The step of comparing the status information of the main control system with the status information of the split optical line terminal equipment (SOP) and synchronizing the configuration file on the main control system to the SOP includes: traversing the IDs of the optical network units (ONUs) of the passive optical network interface (PANI) of the SOP to obtain the status information of the SOP; comparing the status information of the SOP with the status information recorded locally by the main control system; if the status information of the main control system and the SOP are inconsistent, calling the function processing interface of the passive optical network and the PONs on the main control system to synchronize the status information of the PONs recorded by the SOP to the main control system; if the status information of the main control system and the SOP are consistent, no processing is performed on the PONs of the PONs, and the process continues to traverse the next PON.

5. A method for accessing a split optical line terminal equipment, characterized in that, The method for restoring the configuration of a split optical line terminal equipment as described in any one of claims 1 to 4 includes: detecting the connection status of the main control system and the split optical line terminal equipment; if both the main control system and the split optical line terminal equipment are connected for the first time, the main control system reads the configuration file content to be restored and restores the configuration to the split optical line terminal equipment by issuing an instruction. If neither the main control system nor the split optical line terminal equipment is being connected for the first time, the status information of the main control system will be compared with the status information of the split optical line terminal equipment, and the configuration information of the split optical line terminal equipment will be synchronized to the main control system. If the main control system is not being connected for the first time, and the split optical line terminal equipment is being connected for the first time, then 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 split optical line terminal equipment by issuing instructions. If the main control system is connecting for the first time and the split optical line terminal equipment is not connecting for the first time, the main control system sends a restart command to the split optical line terminal equipment. After the split optical line terminal equipment restarts, it initializes the configuration data of the application layer of the main control system and synchronizes the contents of the configuration file to the split optical line terminal equipment by issuing commands.

6. A method for connecting a main control system, characterized in that, The method for restoring the configuration of a split optical line terminal equipment as described in any one of claims 1 to 4 includes: detecting the connection status of the main control system and the split optical line terminal equipment; if both the main control system and the split optical line terminal equipment are connected for the first time, the main control system reads the configuration file content to be restored and restores the configuration to the split optical line terminal equipment by issuing an instruction. If neither the main control system nor the split optical line terminal equipment is being connected for the first time, the status information of the main control system will be compared with the status information of the split optical line terminal equipment, and the configuration information of the split optical line terminal equipment will be synchronized to the main control system. If the main control system is not connecting for the first time, and the split optical line terminal equipment is connecting for the first time, the main control system will clear the configuration data of the application layer and synchronize the contents of the configuration file to the split optical line terminal equipment by issuing instructions. If the main control system is connecting for the first time and the split optical line terminal equipment is not connecting for the first time, the main control system sends a restart command to the split optical line terminal equipment. After the split optical line terminal equipment restarts, the main control system clears the application layer configuration data and synchronizes the contents of the configuration file to the split optical line terminal equipment by issuing commands.

7. A system for restoring the configuration of a split-type optical line terminal equipment, characterized in that, The method for restoring the configuration of a split optical line terminal equipment as described in any one of claims 1 to 4 includes: a connection module for connecting the split optical line terminal equipment and the main control system; A separate optical line terminal equipment detection module is used to detect the connection status of separate optical line terminal equipment; The main control system detection module is 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 configuration of the split optical line terminal equipment based on the connection status of the split optical line terminal equipment and the connection status of the main control system.

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