Service management method and device of passive optical network, optical line terminal and medium

Abstract

The application relates to a service management method and device of a passive optical network, an optical line terminal and a medium. The application embodiment comprises the following steps: maintaining a communication connection with an optical line terminal; acquiring optical network unit management control interface frame data transmitted via the optical line terminal; acquiring service information of an optical network unit according to the optical network unit management control interface frame data; and performing service management on the passive optical network according to a network connection state between the optical line terminal and an optical network unit management control interface virtualization network function and the service information of the optical network unit. In a state where the network connection state between the optical line terminal and the optical network unit management control interface virtualization network function is abnormal, the normal service in the passive optical network can be ensured by temporarily proxying an optical network unit management control interface virtualization network function (OMCI VNF) or an optical network unit (ONU).

Description

TECHNICAL FIELD

[0001] The present application relates to a passive optical network, in particular to a service management method and device of a passive optical network, an optical line terminal and a storage medium. BACKGROUND

[0002] With the development of network function virtualization technology, the network function in the optical line terminal OLT (Optical Line Terminal, OLT for short) is replaced by an externally independently deployed virtualized network function VNF (Virtualized Network Functions, VNF for short). As the network function of managing the optical network unit ONU (Optical Network Unit, ONU for short) on the optical line terminal OLT, the OMCI (ONU Management and Control Interface, OMCI for short) is selected as the VNF to manage the ONU, becoming the OMCI VNF (Optical Network Unit Management and Control Interface Virtualized Network Function, OMCI VNF for short) for implementing the virtualized network function.

[0003] The deployed OMCI VNF (Optical Network Unit Management and Control Interface Virtualized Network Function, OMCI VNF for short) can bring many advantages to the management of the optical network unit ONU (Optical Network Unit, ONU for short), but since the OMCI VNF (Optical Network Unit Management and Control Interface Virtualized Network Function, OMCI VNF for short) and the optical line terminal OLT are in remote network connection, there is a possibility of connection interruption. When the connection between the OMCI VNF (Optical Network Unit Management and Control Interface Virtualized Network Function, OMCI VNF for short) and the optical line terminal OLT is interrupted, it will cause abnormal service of the optical network unit ONU. When the connection between the OMCI VNF (Optical Network Unit Management and Control Interface Virtualized Network Function, OMCI VNF for short) and the optical line terminal OLT recovers from interruption to normal, in order to refresh the service state of the optical network unit ONU, the OMCI VNF (Optical Network Unit Management and Control Interface Virtualized Network Function, OMCI VNF for short) needs to synchronize according to the latest service information of the optical network unit ONU, which will interfere with the normal service of the optical network unit ONU, and also cause abnormal service of the passive optical network. SUMMARY

[0004] The main purpose of the embodiment of the present application is to provide a service management method and device of a passive optical network, an optical line terminal and a storage medium, which aims to ensure the normal service of the optical network unit ONU (Optical Network Unit, ONU for short) when the network connection state between the optical line terminal OLT (Optical Line Terminal, OLT for short) and the OMCI VNF (Optical Network Unit Management and Control Interface Virtualized Network Function, OMCI VNF for short) is in an abnormal connection state.

[0005] To achieve the above object, the embodiment of the present application provides a service management method of a passive optical network, the passive optical network comprising an optical line terminal, an optical network unit and an optical network unit management control interface for implementing a virtualized network function, the method comprising: maintaining a communication connection with the optical line terminal; acquiring optical network unit management control interface frame data transmitted via the optical line terminal; acquiring service information of the optical network unit according to the optical network unit management control interface frame data; and performing service management on the passive optical network according to a network connection state between the optical line terminal and the optical network unit management control interface for implementing the virtualized network function and the service information of the optical network unit.

[0006] To achieve the above object, the embodiment of the present application further provides a service management device of a passive optical network, the device comprising: a communication module configured to maintain a communication connection with an optical line terminal; a listening module configured to acquire optical network unit management control interface frame data transmitted by the optical line terminal and acquire service information of the optical network unit according to the optical network unit management control interface frame data; and a service management module configured to perform service management on the passive optical network according to a network connection state of the optical line terminal and the service information of the optical network unit.

[0007] To achieve the above object, the present application provides an optical line terminal comprising the service management device of the passive optical network as described above.

[0008] To achieve the above object, the present application provides a storage medium for computer-readable storage, the storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the service management method of the passive optical network as described above.

[0009] The embodiment of the present application provides a service management method, device, optical line terminal and storage medium based on a passive optical network, which can maintain a communication connection with an optical line terminal OLT, acquire optical network unit ONU management control interface frame data transmitted via the optical line terminal OLT, acquire service information of the optical network unit ONU according to the optical network unit management control interface OMCI frame data, and perform service management on the passive optical network according to a network connection state of the optical line terminal OLT and the service information of the optical network unit ONU, so that the service in the passive optical network can be ensured to be normally performed by temporarily proxying an optical network unit management control interface virtualized network function OMCI VNF or the optical network unit ONU when the network connection state between the optical line terminal OLT and the optical network unit management control interface virtualized network function OMCI VNF is in an abnormal connection state.

[0010] Other features and advantages of the present application will be set forth in the following specification, and in part will be apparent from the description, or can be learned by practice of the application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 Architecture of a passive optical network based on virtualized network functions;

[0012] Figure 2 Flowchart of a service management method of a passive optical network according to an embodiment of the present application;

[0013] Figure 3 Flowchart of a network connection state determination according to an embodiment of the present application;

[0014] Figure 4 Flowchart of a service management method of a passive optical network in a network interruption state according to an embodiment of the present application;

[0015] Figure 5 Flowchart of a service management method of a passive optical network in a network disconnection state according to another embodiment of the present application;

[0016] Figure 6 Flowchart of a service information synchronization state determination according to an embodiment of the present application;

[0017] Figure 7 Block diagram of a service management device of a passive optical network according to an embodiment of the present application;

[0018] Figure 8 Architecture of a passive optical network according to an embodiment of the present application;

[0019] Figure 9 Architecture of a passive optical network according to another embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0021] It should be noted that although the functional modules are divided in the device schematic diagram, and the logical sequence is shown in the flowchart, in some cases, the steps shown or described can be performed in a manner different from the module division in the device or the sequence in the flowchart. The terms "first", "second", etc. in the description and claims and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0022] In the description of the embodiments of the present application, the words such as arrangement, installation, connection, etc. should be understood broadly, and the person skilled in the art can determine the specific meaning of the above words in the embodiments of the present application in combination with the specific content of the technical solutions, unless otherwise explicitly limited.

[0023] Network Function Virtualization (NFV) is to use general-purpose IT hardware and software and virtualization technology to implement network functions originally provided by professional network equipment using software, which can reduce network costs and flexibly expand network functions. NFV decouples and abstracts the functions of professional communication equipment through software and hardware, and uses software based on general-purpose computing, storage and network equipment to implement communication network functions, so that network equipment functions are no longer dependent on special hardware, resources can be fully and flexibly shared, and new services can be quickly developed and deployed, and automatic deployment, elastic scaling, fault isolation and self-healing based on actual business needs.

[0024] Based on the development of passive optical network, operators have gradually tried to change the network function in the optical line terminal (OLT) device to an external independent deployment virtualized network function (VNF) instead, forming an optical network unit management control interface (OMCI) VNF for implementing virtualized network functions. However, since the OMCI VNF and the OLT device are remotely connected, there is a possibility of connection interruption. Once the connection between the OMCI VNF and the OLT device is interrupted, the ONU connected to the OLT device will lose the manager, causing abnormal service; and when the connection between the OMCI VNF and the OLT device is restored, the OMCI VNF needs to synchronize all ONUs connected to the OLT device at once in order to update the working status of the ONU, which may interfere with the normal service of the ONU.

[0025] Based on this, embodiments of this application provide a service management method, apparatus, optical line terminal, and storage medium for passive optical fiber networks. By maintaining a communication connection with the optical line terminal (OLT), the method obtains optical network unit (ONU) management and control interface (OMCI) frame data transmitted via the OLT. It then obtains the service information of the ONU based on the OMCI frame data and performs service management on the passive optical fiber network according to the network connection status of the OLT and the service information of the ONU. Even when the OLT and the OMCI VNF network connection is abnormal, the method temporarily proxies the operation of the OMCI VNF or the ONU, ensuring the normal operation of the ONU's services.

[0026] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of a passive optical fiber network architecture based on virtualization network functions. From... Figure 1 As can be seen, the passive optical fiber network with virtualized network functionality mainly consists of three parts: the optical line terminal (OLT), the optical network unit (ONU), and the optical network unit management and control interface virtualized network function (OMCI VNF). The ONU and OMCI VNF are remotely connected to the OLT, sending service management commands to the OLT. The OLT then transmits the services to each ONU, thus enabling service management of the ONU.

[0028] Firstly, embodiments of this application provide a service management method for a passive optical fiber network. For example... Figure 2 The diagram shown is a schematic flowchart of a service management method for a passive optical fiber network provided in an embodiment of this application. The service management method for a passive optical fiber network provided in this embodiment includes at least the following:

[0029] Step S100: Maintain communication connection with the optical line terminal.

[0030] In this embodiment, the communication connection with the optical line terminal (OLT) can be maintained through communication between modules within the OLT. In other embodiments, it can be an external device located within the OLT but connected locally to the OLT.

[0031] Step S200: Obtain optical network unit management and control interface frame data transmitted via optical line terminal.

[0032] In the embodiment of the present application, the optical line terminal OLT is used to deliver the management information of the optical network unit management control interface virtualization network function OMCI VNF to each optical network unit ONU, and upload the user information obtained by each optical network unit ONU. The data transmitted through the optical network unit management control interface OMCI is frame data, and the frame data includes all the information transmitted between the optical line terminal OLT and the optical network unit ONU.

[0033] Step S300: obtaining the service information of the optical network unit according to the optical network unit management control interface frame data.

[0034] The service information of the optical network unit ONU includes various information, such as registration information, security information, configuration information and state information. In the embodiment, the service information includes the service configuration information and the service state information of each ONU.

[0035] Step S400: performing service management on the passive optical fiber network according to the network connection state of the optical line terminal and the service information of the optical network unit.

[0036] When the network state between the optical line terminal OLT and the optical network unit management control interface virtualization network function OMCI VNF changes, for example, from a normal connection state to a disconnection state or from a disconnection state to a normal connection state, the service of the ONU will be abnormal.

[0037] Therefore, in the embodiment, the network connection state of the optical line terminal OLT is first judged, and according to the specific network connection state, the service information of the optical network unit obtained in step S300 is combined to perform service management on the passive optical fiber network, and the service management includes service management on the ONU side or the OMCI VNF side.

[0038] When the network state is abnormal or changes, the service management method of the passive optical fiber network provided in the embodiment can temporarily proxy the work of the optical network unit management control interface virtualization network function OMCI VNF or the optical network unit ONU, so as to ensure the normal service of the optical network unit ONU.

[0039] In the embodiment, a specific method for judging the network connection state according to a time threshold is provided. As shown in the following table, at least the following conditions are included: Figure 3

[0040] Step S401: whether the optical network unit management control interface frame data is obtained in two or more consecutive link keep-alive periods.

[0041] ​In the embodiment, it is assumed that three link keep-alive periods are selected as the time threshold for judging the network state, and each link keep-alive period is 3 seconds, that is, whether the optical network unit management control interface frame data is acquired within 9 seconds is judged.

[0042] Step S402: If yes, it is judged that the network connection between the OMCI VNF and the OLT is interrupted.

[0043] Step S403: If no, it is judged that the network connection between the OMCI VNF and the OLT is normal.

[0044] Those skilled in the art can know that the above-mentioned judgment method using the link keep-alive period as the time threshold is only one case, and other methods of directly setting a time threshold for judgment can also be used as the embodiment of the application.

[0045] Figure 4 The flowchart of the service management method of the passive optical network in the network interruption state provided by the embodiment of the application at least includes:

[0046] Step S110: Keep communication connection with the optical line terminal.

[0047] In the embodiment, the module for keeping communication with the optical line terminal OLT is arranged outside the OLT and keeps local connection with the OLT.

[0048] Step S210: Acquire the optical network unit management control interface frame data transmitted via the optical line terminal.

[0049] Step S310: Acquire the service information of the optical network unit according to the optical network unit management control interface frame data.

[0050] In the embodiment, the service configuration information and the service state information of each ONU are obtained by analyzing the OMCI frame data. Those skilled in the art can know that the definition of the OMCI frame data, the definition of the management entity ME (Management Entity, ME for short) and the data information contained therein, and the relationship between different management entities ME can be known according to the standard ITU-T G.988 "ONU management and control interface (OMCI) specification", and thus will not be described here.

[0051] Step S410: When the network connection state between the optical line terminal OLT and the optical network unit management control interface for implementing the virtualized network function changes from the normal connection to the interruption state, the normal service processing of the optical network unit is kept according to the optical network unit management control interface request of the optical network unit.

[0052] In the embodiment, when the optical line terminal (OLT) and the optical network unit management control interface (OMCI) VNF for implementing virtualized network function change from normal connection to interruption state, the OMCI VNF cannot manage the service of the ONU through the OLT, at this time, the passive optical network service management device arranged outside the OLT maintains the normal service processing of the optical network unit according to the request of the optical network unit management control interface of the optical network unit.

[0053] Specifically, the passive optical network service management device responds to the OMCI request of the ONU instead of the OMCI VNF, and maintains the normal service of the ONU.

[0054] Figure 5 The flowchart of the service management method of the passive optical network in the network interruption state provided by another embodiment of the application comprises at least the following steps:

[0055] Step S120: maintaining communication connection with the optical line terminal.

[0056] In the embodiment, the module for maintaining communication with the optical line terminal (OLT) is arranged inside the OLT as a functional module of the OLT, and is locally connected with the OLT.

[0057] Step S220: obtaining optical network unit management control interface frame data transmitted through the optical line terminal.

[0058] Step S320: obtaining service information of the optical network unit according to the optical network unit management control interface frame data.

[0059] In the embodiment, the service configuration information and the service state information of each ONU are obtained by analyzing the OMCI frame data. It is known to those skilled in the art that the definition of the OMCI frame data, the definition of the management entity (ME) and the contained data information, and the relationship between different management entities (ME) can be known according to the standard ITU-T G.988 "ONU management and control interface (OMCI) specification", which will not be described here.

[0060] Step S420: when the network connection state of the optical line terminal (OLT) recovers from interruption to normal connection state, synchronizing the service information of the optical network unit to the optical network unit management control interface (OMCI) VNF for implementing virtualized network function according to the service information of the optical network unit.

[0061] In the embodiment, when the OLT and the OMCI VNF change from the interrupt connection to the normal connection, the OMCI VNF needs to quickly update the ONU state during the network interruption without interfering with the normal work of the ONU.

[0062] In the state of the synchronization update being completed or not completed, if a new OMCI request from the ONU appears again, different processing strategies need to be made for the OMCI request, and the specific judgment and processing strategies are shown in a service information synchronization state judgment flowchart. Figure 6

[0063] As shown in Figure 6 , an embodiment of the application provides a service information synchronization state judgment flowchart, which at least includes:

[0064] Step S421: whether a MIB synchronization request from the OMCI VNF side is received.

[0065] In the embodiment, the premise of the service information synchronization state judgment is that the network state changes from the interruption state to the normal connection state. By judging whether the service management device of the PON can still receive the MIB synchronization request from the OMCI VNF side, whether the service information synchronization is completed is judged, and the response subject of the subsequent OMCI request is determined.

[0066] Step S422: if not, forwarding the ONU management control interface request of the optical network unit to the optical network unit management control interface for implementing the virtualized network function.

[0067] In the embodiment, if the service information synchronization has been completed, the OMCI VNF at this time is not only normally connected with the OLT network, but also has obtained the ONU state information during the network interruption. Therefore, the OMCI VNF as the responder of the subsequent OMCI request replaces the service management device of the PON to process the service of the ONU, that is, the OMCI request of the ONU will be directly forwarded to the OMCI VNF by the service management device of the PON.

[0068] Step S423: if yes, according to the ONU management control interface request of the optical network unit, the normal service processing of the optical network unit is maintained.

[0069] ​In the embodiment, when the service information synchronization is not completed, even if the OMCI VNF is connected to the OLT network normally, but directly forwarding to the OMCI VNF may cause abnormal service processing because the OMCI VNF has not completed the status synchronization, therefore the service management device of the passive optical network still handles it.

[0070] By judging whether the MIB (Management Information Base, MIB for short) synchronization request from the OMCI VNF side is received, the OMCI VNF service information synchronization state is judged, which can ensure the effective processing of the OMCI request from the ONU, avoid the abnormal service processing caused by the incomplete synchronization, and after the synchronization is completed, the MCI VNF processing is transferred, which can also improve the service management efficiency of the passive optical network.

[0071] In the second aspect, the embodiment of the application provides a service management device of a passive optical network, as shown in the accompanying drawings, comprising a communication module for maintaining a communication connection with an optical line terminal; a listening module for acquiring optical network unit management control interface frame data transmitted by the optical line terminal, and acquiring service information of the optical network unit according to the optical network unit management control interface frame data; and a service management module for performing service management on the passive optical network according to a network connection state between the optical line terminal and an optical network unit management control interface for implementing a virtualized network function and the service information of the optical network unit. Figure 7

[0072] In some embodiments, when the network connection state of the optical line terminal OLT is in the interruption state, the service management module performs service management on the optical network unit according to the service information of the optical network unit, and the service management specifically includes that the service management module requests the optical network unit management control interface OMCI according to the optical network unit ONU, so as to maintain the normal service processing of the optical network unit.

[0073] In some embodiments, when the network connection state of the optical line terminal OLT is recovered from interruption to normal, the service management module synchronizes the service information of the optical network unit according to the service information of the optical network unit ONU, and the service management specifically includes that the service management module synchronizes the service information of the optical network unit management control interface OMCI VNF for implementing a virtualized network function.

[0074] ​In some embodiments, when the optical network unit management control interface for implementing the virtualized network function completes synchronization of the service information of the optical network unit, then the service management module forwards the optical network unit management control interface request of the optical network unit to the optical network unit management control interface OMCI VNF for implementing the virtualized network function, and then the service management is performed by the optical network unit management control interface OMCI VNF for implementing the virtualized network function.

[0075] In some embodiments, when the optical network unit management control interface for implementing the virtualized network function does not complete synchronization of the service information of the optical network unit, then the service management module maintains normal service management of the optical network unit according to the optical network unit management control interface request of the optical network unit.

[0076] As shown in FIG. 1, the service management device of the passive optical network in some embodiments is an independent device arranged outside the optical line terminal OLT, but is locally connected with the OLT, so that the network connection state thereof is not affected by the network connection state between the OMCI VNF and the OLT. The service management device is arranged between the OLT and the OMCI VNF, and in the case of network interruption, the service management device replaces the OMCI VNF to perform service management on the ONU, and when the network recovers to normal, the service management device replaces the ONU to perform synchronization update with the OMCI VNF until the synchronization is completed, and then the service management is handed over to the OMCI VNF, and the service management device returns to the listening mode. Figure 8 As shown in FIG. 2, the service management device of the passive optical network in some embodiments is arranged inside the optical line terminal OLT as a built-in function of the OLT, so that the communication thereof with the OLT is not affected by the network connection state between the OLT and the OMCI VNF. In the case of network interruption, the service management device replaces the OMCI VNF to perform service management on the ONU, and when the network recovers to normal, the service management device replaces the ONU to perform synchronization update with the OMCI VNF until the synchronization is completed, and then the service management is handed over to the OMCI VNF, and the service management device returns to the listening mode.

[0077] Figure 9 As shown in FIG. 2, the service management device of the passive optical network in some embodiments is arranged inside the optical line terminal OLT as a built-in function of the OLT, so that the communication thereof with the OLT is not affected by the network connection state between the OLT and the OMCI VNF. In the case of network interruption, the service management device replaces the OMCI VNF to perform service management on the ONU, and when the network recovers to normal, the service management device replaces the ONU to perform synchronization update with the OMCI VNF until the synchronization is completed, and then the service management is handed over to the OMCI VNF, and the service management device returns to the listening mode.

[0078] In a third aspect, the embodiments of the present application further provide an optical line terminal comprising the service management device of the passive optical network of the second aspect.

[0079] In a fourth aspect, the embodiments of the present application further provide a computer readable storage medium storing computer executable instructions for performing the method of the first aspect.

[0080] Those skilled in the art can understand that all or some of the steps in the above disclosed method and the function modules / units in the system and device can be implemented as software, firmware, hardware or appropriate combination thereof.​

[0081] In hardware implementations, the division of functionality between the functional modules / units referred to in the above description does not necessarily correspond to a division of physical components; for example, one physical component can have multiple functionalities, or one functionality or step can be performed by several physical components in cooperation. Certain physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on computer readable media, which can include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Further, it should be appreciated by those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.

[0082] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, and are not intended to limit the scope of the present application. Any modification, equivalent replacement and improvement made by those of ordinary skill in the art without departing from the scope and spirit of the present application shall fall within the scope of the present application.

Claims

1. A service management method of a passive optical network, applied to a service management device of a passive optical network, the passive optical network comprising an optical line terminal, an optical network unit, and an optical network unit management and control interface for implementing a virtualized network function, the method comprising: maintaining a communication connection with the optical line terminal; obtaining optical network unit management and control interface frame data transmitted via the optical line terminal; obtaining service information of the optical network unit according to the optical network unit management and control interface frame data; performing service management on the passive optical network according to a network connection state between the optical line terminal and the optical network unit management and control interface for implementing a virtualized network function and the service information of the optical network unit, comprising: when the network connection state between the optical line terminal and the optical network unit management and control interface for implementing a virtualized network function is in an interrupted state, performing service management on the optical network unit according to the service information of the optical network unit; when the network connection state between the optical line terminal and the optical network unit management and control interface for implementing a virtualized network function is recovered from interruption to normal, synchronizing the service information of the optical network unit to the optical network unit management and control interface for implementing a virtualized network function according to the service information of the optical network unit.

2. The method of service management for a passive optical network of claim 1, wherein, the service management on the optical network unit comprises: maintaining normal service processing of the optical network unit according to an optical network unit management and control interface request of the optical network unit.

3. The method of service management for a passive optical network of claim 1, wherein, when the synchronization of the service information of the optical network unit to the optical network unit management and control interface for implementing a virtualized network function is completed, forwarding an optical network unit management and control interface request of the optical network unit to the optical network unit management and control interface for implementing a virtualized network function.

4. The method of service management for a passive optical network of claim 1, wherein, when the synchronization of the service information of the optical network unit to the optical network unit management and control interface for implementing a virtualized network function is not completed, maintaining normal service processing of the optical network unit according to an optical network unit management and control interface request of the optical network unit.

5. The method of service management for a passive optical network of claim 1, wherein, when the optical network unit management and control interface frame data transmitted via the optical line terminal is not obtained within a time threshold, the network state is in a connection interruption state; otherwise, the network state is in a connection normal state.

6. The method of service management for a passive optical network of any of claims 1 to 5, wherein, the service information of the optical network unit comprises service configuration information and service state information. 7.A service management device of a passive optical network, comprising: a communication module configured to maintain a communication connection with an optical line terminal; a listening module configured to obtain optical network unit management and control interface frame data transmitted by the optical line terminal, and obtain service information of the optical network unit according to the optical network unit management and control interface frame data; a service management module configured to perform service management on the passive optical network according to a network connection state between the optical line terminal and an optical network unit management and control interface for implementing a virtualized network function and the service information of the optical network unit, comprising: when the network connection state between the optical line terminal and the optical network unit management control interface for implementing virtualized network function is in an interrupted state, performing service management on the optical network unit according to service information of the optical network unit; when the network connection state between the optical line terminal and the optical network unit management control interface for implementing virtualized network function is recovered from interruption to normal, synchronizing the service information of the optical network unit on the optical network unit management control interface for implementing virtualized network function according to the service information of the optical network unit. 8.An optical line terminal comprising the passive optical network service management device according to claim 7.

9. A storage medium for computer-readable storage, characterized in that, The storage medium stores one or more programs, which can be executed by one or more processors to implement the passive optical network service management method according to any one of claims 1 to 6.

Images