WO2016188196A1 - 一种异常pon终端的检测方法及装置 - Google Patents

一种异常pon终端的检测方法及装置 Download PDF

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Publication number
WO2016188196A1
WO2016188196A1 PCT/CN2016/076391 CN2016076391W WO2016188196A1 WO 2016188196 A1 WO2016188196 A1 WO 2016188196A1 CN 2016076391 W CN2016076391 W CN 2016076391W WO 2016188196 A1 WO2016188196 A1 WO 2016188196A1
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pon terminal
abnormal
pon
olt
identifier
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PCT/CN2016/076391
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English (en)
French (fr)
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余辰东
于金辉
谢云鹏
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中兴通讯股份有限公司
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Publication of WO2016188196A1 publication Critical patent/WO2016188196A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems

Definitions

  • the present invention relates to, but is not limited to, the field of Passive Optical Network (PON), and in particular to a method and apparatus for detecting an abnormal passive optical network terminal.
  • PON Passive Optical Network
  • the passive optical network system is composed of an EMS (Element Management System), an OLT (Optical Line Terminal), an ODN (Optical Distribution Network), and a plurality of PON terminals, wherein the PON terminal includes an ONU (Optical Network Unit, ONT (Optical Network Terminal), etc. Take the ONU as an example.
  • the networking structure of the passive optical network system is as shown in Figure 1.
  • the OLT acts as the central office device to connect multiple ONU devices through the ODN network.
  • the ONU device implements user service access, thus implementing data services and configuration. Management and other functions.
  • the PON network acts as a "point-to-multipoint" topology: the transmission direction from the OLT to the ONU is downlink (downstream), and the downlink direction uses broadcast (Broadcast) to transmit data.
  • the ONU determines whether the data is valid according to the data identifier and determines to receive. Or discarding; the transmission direction from the ONU to the OLT is the upstream direction (upstream), and the uplink direction can be the time division multiple access (TDMA).
  • TDMA time division multiple access
  • each PON terminal is assigned a unique ONU identifier as a link identifier of the ONU, such as an EPON (Ethernet-based passive optical network), under the control of the OLT.
  • the system uses the LIID (Logical Link Identifier) as the unique identifier of the PON terminal; for example, the ONU ID (the optical network unit identifier, ONU Identifier) is used as the PON terminal in the GPON (Gigabit Passive Optical Network) system. Identification), used for OLT to manage each PON terminal.
  • LIID Logical Link Identifier
  • the PON terminal identifier is uniformly allocated by the OLT when the PON terminal is registered, and after the PON terminal is successfully registered, the OLT allocates different uplink bandwidth slots according to the PON terminal identifier, and the respective time slots are independent of each other.
  • the PON terminal only opens the uplink illumination of the optical module in the different uplink bandwidth slots allocated by the OLT, and responds to various messages of the OLT. Not authorized or expired in the time slot After that, the PON terminal must turn off the uplink illuminating of the optical module, and can only listen to the OLT downlink message and accept or discard according to the PON terminal identifier in the downlink message header.
  • the PON terminal When the PON terminal is powered off or offline, its PON terminal identifier is reassigned by the OLT to other newly accessed PON terminals, that is, the PON terminal identifier adopts a dynamic allocation mechanism.
  • the PON terminal identifiers allocated by the OLT device are illegally occupied, and the abnormal PON terminals cannot be detected. This will affect the interaction between the PON terminal and the OLT device that the OLT normally allocates the PON terminal identifier, and the PON terminal that is normally assigned the PON terminal identifier cannot accept the OLT control, and the line is disconnected and cannot be registered. Serious impact.
  • the embodiment of the invention provides a method and a device for detecting an abnormal PON terminal, which can solve the technical problem that the abnormal PON terminal that cannot illegally occupy the PON terminal identifier can be detected in the related art.
  • an embodiment of the present invention provides a method for detecting an abnormal PON terminal, including: an optical line terminal (OLT) detecting an abnormal PON terminal identifier, where the abnormal PON terminal identifier includes an already assigned PON terminal identifier and The PON terminal identifier corresponding to the PON terminal that has not received the registration completion message within a predetermined time; the OLT locks the abnormal PON terminal identifier; and the OLT determines the PON corresponding to the abnormal PON terminal identifier according to the abnormal PON terminal identifier The terminal is an abnormal PON terminal.
  • OLT optical line terminal
  • the determining, by the OLT, that the PON terminal corresponding to the abnormal PON terminal identifier is an abnormal PON terminal according to the abnormal PON terminal identifier includes: the OLT creates a virtual PON terminal interface; and the OLT passes the virtual PON terminal interface. Sending an authorization message of the abnormal PON terminal identifier; if the virtual PON terminal interface detects the light reception after transmitting the authorization message, the OLT determines the abnormal PON according to whether the PON terminal response message is received. End The PON terminal corresponding to the end identifier is an abnormal PON terminal.
  • the OLT determines, according to whether the PON terminal response message is received, that the PON terminal corresponding to the abnormal PON terminal identifier is an abnormal PON terminal, if the PON terminal response message is not received, The OLT determines all historical PON terminals under the PON port that use the PON terminal identifier as abnormal PON terminals.
  • the determining, by the OLT, whether the PON terminal corresponding to the abnormal PON terminal identifier is an abnormal PON terminal according to whether the PON terminal response message is received if the PON terminal receives the response message of the PON terminal, The OLT determines an abnormal PON terminal according to the PON terminal information in the PON terminal response message; or the OLT performs optical ranging, and determines an abnormal PON terminal according to the result of the optical ranging.
  • the PON terminal response packet carries at least one of the following PON terminal information: a medium access control (MAC) address, a serial number (SN), a logical ONU identifier (LOID, a Logical ONU Identifier) ), receiving luminous power, distance.
  • MAC medium access control
  • SN serial number
  • LOID logical ONU identifier
  • Logical ONU Identifier receiving luminous power
  • an embodiment of the present invention further provides an apparatus for detecting an abnormal PON terminal, which is applied to an optical line terminal (OLT), and includes: a detecting module, configured to: detect an abnormal PON terminal identifier, where The abnormal PON terminal identifier is a PON terminal identifier corresponding to the PON terminal that has allocated the PON terminal identifier and has not received the registration completion message within a predetermined time; the locking module is configured to: lock the abnormal PON terminal identifier; and determine a module, set to Determining, according to the abnormal PON terminal identifier, that the PON terminal corresponding to the abnormal PON terminal identifier is an abnormal PON terminal.
  • OLT optical line terminal
  • the determining module includes: a creating unit, configured to: create a virtual PON terminal interface, and a sending unit, configured to: send, by using the virtual PON terminal interface, an authorization message of the abnormal PON terminal identifier; determining a unit, setting The PON terminal corresponding to the abnormal PON terminal identifier is determined to be an abnormal PON terminal according to whether the PON terminal response message is received or not, after the PON terminal response message is received by the virtual PON terminal interface.
  • the determining unit includes: determining the subunit, configured to: determine, after the PON terminal does not receive the PON terminal response message, all historical PON terminals that use the PON terminal identifier under the PON interface to be abnormal. PON terminal.
  • the determining unit includes: determining the subunit, configured to: determine an abnormal PON terminal according to the PON terminal information in the PON terminal response message, if the PON terminal response message is received; or , performing optical ranging, and determining an abnormal PON terminal according to the result of optical ranging.
  • an embodiment of the present invention further provides an OLT, including the foregoing abnormal PON terminal detecting apparatus.
  • an embodiment of the present invention further provides an OLT, including a PONMAC chip and a processor, where the processor is configured to execute the foregoing abnormal PON terminal detection method instruction.
  • an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed.
  • the optical line terminal detects an abnormal PON terminal identifier, where the abnormal PON terminal identifier includes a PON terminal identifier corresponding to the PON terminal that has allocated the PON terminal identifier and has not received the registration completion message within a predetermined time;
  • the OLT locks the abnormal PON terminal identifier;
  • the OLT determines that the PON terminal corresponding to the abnormal PON terminal identifier is an abnormal PON terminal according to the abnormal PON terminal identifier, thereby solving the problem that the PON terminal identifier cannot be detected illegally in the related art.
  • the technical problem of the abnormal PON terminal thereby realizing the simpler and more flexible dynamic monitoring of the abnormal PON terminal, and also reducing the cost of solving the problem.
  • FIG. 1 is a topological diagram of a PON network according to the related art
  • FIG. 2 is a flowchart of a method for detecting an abnormal ONU according to an embodiment of the present invention
  • FIG. 3 is a structural block diagram of an apparatus for detecting an abnormal ONU according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a specific implementation of detecting an abnormal ONU under an EPON according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a specific implementation of detecting an abnormal ONU in a GPON according to an embodiment of the present invention
  • FIG. 6 is a structural block diagram of an OLT according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for detecting an abnormal PON terminal according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:
  • Step S202 the OLT detects an abnormal PON terminal identifier, where the abnormal PON terminal identifier is a PON terminal identifier corresponding to the PON terminal that has allocated the PON terminal identifier and has not received the registration completion message within a predetermined time;
  • Step S204 the OLT locks the abnormal PON terminal identifier
  • Step S206 the OLT determines, according to the abnormal PON terminal identifier, that the PON terminal corresponding to the abnormal PON terminal identifier is an abnormal PON terminal.
  • the OLT may complete step S206 through the virtual PON terminal interface detection, including: the OLT creates a virtual PON terminal interface; the OLT sends the authorization message of the abnormal PON terminal identifier through the virtual PON terminal interface; When the interface detects the receipt of the light after transmitting the authorization message, the OLT determines that the PON terminal corresponding to the abnormal PON terminal identifier is an abnormal PON terminal according to whether the PON terminal response message is received.
  • the PON terminal response message carries at least one of the following PON terminal information: a medium access control (MAC, Media Access Control) address, a serial number (SN, Serial Number), a logical ONU identifier (LOID), and a received light power. ,distance.
  • MAC medium access control
  • SN Serial Number
  • LOID logical ONU identifier
  • the OLT has the following situation: the OLT detects no light receiving; the OLT detects the light receiving, does not receive the report response message; the OLT detects the light receiving, And received a report response message.
  • the detection can be further differentiated to further detect and locate the abnormal PON terminal, which is convenient for troubleshooting and maintenance.
  • the OLT determines all the historical PON terminals under the PON port that are identified by the PON terminal as abnormal PON terminals.
  • the OLT performs optical ranging or determines an abnormal PON terminal based on the PON terminal information in the PON terminal report response message.
  • a detection device for the abnormal passive optical network terminal is further provided for the OLT.
  • the detection device is used to implement the above-mentioned embodiments and optional embodiments, and the description thereof has been omitted.
  • the terms "module,” “unit,” and “subunit” as used hereinafter may be a combination of software and/or hardware that implements a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the apparatus includes: a detecting module 32 configured to: detect an abnormal PON terminal identifier, wherein the abnormal PON terminal identifier is a PON terminal that has allocated a PON terminal identifier and has not received a registration completion message within a predetermined time.
  • the locking module 34 is configured to: lock the abnormal PON terminal identifier;
  • the determining module 36 is configured to: determine, according to the abnormal PON terminal identifier, that the PON terminal corresponding to the abnormal PON terminal identifier is an abnormal PON terminal .
  • the detecting module 32 includes: a creating unit, configured to: create a virtual PON terminal interface; and a sending unit, configured to: send an authorization message of the abnormal PON terminal identifier by using the virtual PON terminal interface; a unit, configured to: determine, by the virtual PON terminal interface, that the PON terminal corresponding to the abnormal PON terminal identifier is an abnormal PON, according to whether the PON terminal response message is received, if the received light is detected. terminal.
  • the determining unit includes: determining the subunit, configured to: determine, after the PON terminal does not receive the PON terminal response message, all the PON terminals that use the PON terminal identifier under the PON interface are determined to be abnormal. PON terminal.
  • the determining subunit may be further configured to: determine an abnormal PON terminal according to the PON terminal information in the PON terminal response message, if the PON terminal reports a response message, or Light ranging, according to light The result of the ranging determines the abnormal PON terminal.
  • the registration process of ONUs in EPON systems using TDMA access mode is as follows:
  • the EPON system uses the Multi-Point Control Protocol (MPCP) to define the MAC control mechanism of the point-to-multipoint optical network.
  • MPCP Multi-Point Control Protocol
  • the MPCP protocol defines five protocol frames for management operations of the PON network:
  • GATE Authorization frame
  • Report frame The ONU reports the status and request of the ONU to the OLT;
  • Registration request frame (REGISTER_REQ): The ONU sends a registration request to the OLT;
  • REGISTER_REQ message for the OLT to respond to the ONU;
  • Registration response frame (REGISTER_ACK): The ONU sends the OLT to indicate the end of the entire registration process.
  • the above authorization frame and three registration frames are used for the automatic discovery mode, and in the working mode, only the interaction between the authorization frame and the report frame is included.
  • MPCP does not allow ONU transmission. That is, the ONU cannot forward any data (and cannot turn on the laser) until it is authorized by the OLT. MPCP detects the newly connected ONU through the auto discovery mode. Specific steps are as follows:
  • Step 1 The OLT starts the automatic discovery mode and allocates a discovery window, and sends a discovery authorization frame (GATE) message in a broadcast manner, and advertises the start time and length of the discovery time slot;
  • GATE discovery authorization frame
  • Step 2 The uninitialized ONU responds to the GATE message and completes the clock synchronization between the OLT and the ONU. After the ONU local clock reaches the discovery time slot, the ONU sends a REGISTER_REQ message after the random delay, the message containing the source address of the ONU and the representative transmission time. ONU local clock label;
  • Step 3 After the OLT parses and confirms the REGISTER_REQ message, the MAC address of the ONU is used. Sending a REGISTER message to the ONU being initialized, the message including a logical link identifier (LLID) allocated by the OLT for uniquely identifying the ONU;
  • LLID logical link identifier
  • Step 4 After receiving the REGISTER and normal GATE messages, the ONU will send a REGISTER_ACK message in the assigned authorization slot to inform the OLT that it has successfully parsed the REGISTER message and complete the entire automatic discovery process.
  • the following describes an optional implementation of the abnormal ONU detection method in the EPON by using the EPON as an example to solve the technical problem that the abnormal ONU that cannot illegally occupy the LIID cannot be detected under the EPON.
  • FIG. 4 is a flowchart of an optional implementation of detecting an abnormal ONU in an EPON according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:
  • Step S402 The OLT maintains an ONU historical registration authentication information table under the PON interface, and the content includes but is not limited to LLID, ONU type, MAC address, serial number (SN), LOID, received light power, distance and other ONU parameters, and the OLT is optional. Maintaining an abnormal LLID record table at the same time;
  • the ONU historical registration authentication information table under the PON port records the ONU information of the registered authentication based on the LLID in units of the PON port. Since the LLID is dynamically allocated, the ONU history information in a certain period can be recorded. Optionally, the record ONU information period can be manually specified, and the related ONU information that the same LLID is allocated multiple times is recorded. Optionally, the recording ONU information period may be configured according to a policy, that is, according to the detection result of step S404, the related ONU information in the two periods of normal allocation and abnormal allocation of the ONU identifier is recorded.
  • Step S404 The OLT periodically detects the LLID that has been allocated in the PON port discovery process, and cannot receive the ONU registration completion message in consecutive cycles (manually configurable), and records the LLID of the ONU, and the LLID is recorded. Set to suspicious LLID, counted in the abnormal ONU identification record table;
  • Step S406 The OLT locks the abnormal LLID, does not allocate it to the actual ONU, and then assigns another LLID to the ONU that actually initiates the registration request, so that the registration is successful;
  • Step S408 The OLT creates a virtual ONU interface and performs light detection.
  • the OLT creates an ONU on the corresponding PON interface through the human-machine command/network management or the third-party operation and maintenance system, and configures the ONU interface attribute to be virtual.
  • the OLT command or the network management system or the third-party operation and maintenance system is adopted.
  • Bind the abnormal LLID to the ONU interface and set the abnormal LLID.
  • the virtual ONU interface is assigned to the virtual ONU interface to send an abnormal LLID authorization message to the MPCP GATE frame.
  • the OLT completes the normal authorization and performs optical detection on the virtual ONU interface.
  • Step S410 The OLT determines whether the received light is received, and whether there is a response message MPCP REPORT frame;
  • Step S412 When the OLT detects the light collection and receives the report response message MPCP REPORT frame, the OLT locates the abnormal ONU according to the report response message or the optical ranging;
  • the report response message carries at least one of an ONU parameter such as a MAC address, a sequence number (SN), a LOID, a received light power, and a distance
  • the OLT compares the report response message with the ONU history registration authentication information table of the PON port.
  • the OLT can compare the MAC address of the ONU, find the ONU with the same MAC address, and determine the specific abnormal ONU.
  • the ranging information is compared by optical ranging to find the ONU with the similar ranging result.
  • the ONU is included in the abnormal ONU; or, the ranging information is directly compared by the optical ranging, and the ONU with the approximate ranging result is found, and the ONU is included in the abnormal ONU;
  • Step S414 When the received light is detected, but the report response message is not received, all ONUs that use the LLID in the ONU historical registration authentication information table of the PON port are listed as abnormal ONUs;
  • Step S416 The abnormal ONU is reported to the network management system or other operation and maintenance platform through an alarm or a notification message, and carries the information in the ONU historical registration authentication information table of the PON port, and combines the user account information to find a specific location and the site. deal with.
  • FIG. 5 is a flowchart of a specific implementation of detecting an abnormal ONU under a GPON according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:
  • Step S502 The OLT maintains an ONU historical registration authentication information table under the PON interface, and the content includes but is not limited to a serial number (SN), an ONU type, a MAC address, an ONU ID (an optical network unit identifier, an ONU Identifier), a receiving power, a distance, and the like. OLT can maintain abnormal ONU at the same time under optional conditions. Identification record table;
  • the ONU historical registration authentication information table of the PON port records the ONU information of the registered authentication based on the ONU ID in units of the PON port. Since the ONU ID is dynamically allocated, the ONU history information in a certain period can be recorded. Optionally, the record ONU information period can be manually specified, and the related ONU information that the same ONU ID is allocated multiple times is recorded. Optionally, the recording ONU information period may be configured according to a policy, that is, according to the detection result of step S504, the related ONU information in the two periods of normal allocation and abnormal allocation of the ONU identifier is recorded.
  • Step S504 The OLT periodically detects the ONU that has been assigned the ONU ID during the discovery process under the PON port, and cannot receive the ONU registration completion message in consecutive cycles (manually configurable), and records the ONU ID of the ONU.
  • the ONU ID is set to a suspicious ONU ID, and is included in the abnormal ONU identifier record table;
  • Step S506 The OLT locks the abnormal ONU ID, does not assign it to the actual ONU, and then assigns another ONU ID to the ONU that actually initiates the registration request, so that the registration is successful;
  • Step S508 The OLT creates a virtual ONU interface and performs light detection.
  • the OLT creates an ONU on the corresponding PON interface through the human-machine command/network management or the third-party operation and maintenance system, and configures the ONU interface attribute to be virtual.
  • the OLT command or the network management system or the third-party operation and maintenance system is adopted.
  • Bind the ONU ID to the ONU interface and sends an authorization message GTC/BWmap (GPON transmission aggregation/bandwidth allocation frame) of the abnormal ONU ID through the virtual ONU interface.
  • GTC/BWmap GPON transmission aggregation/bandwidth allocation frame
  • Step S510 The OLT determines whether the received light is received, and whether there is a response message PLOAMu/DBRu frame (uplink physical layer operation management maintenance/uplink dynamic bandwidth report frame),
  • Step S512 When the OLT detects the light collection and receives the report response message PLOAMu/DBRu frame, the OLT locates the abnormal ONU according to the report response message or the optical ranging;
  • the report response message carries at least one of an ONU parameter such as a MAC address, an SN sequence number, a LOID, a received light power, and a distance, and the OLT compares the report response message with the PON port.
  • the ONU history registration authentication information table determines the specific abnormal ONU. For example, the OLT can compare the MAC addresses of the ONUs to find the ONUs with the same MAC address, and determine the specific abnormal ONU.
  • the ranging information is compared by optical ranging to find the ONU with the similar ranging result.
  • the ONU is included in the abnormal ONU; or the ranging information is directly compared by the optical ranging to find the ONU with the approximate ranging result, and the ONU is included in the abnormal ONU.
  • Step S514 When the received light is detected, but the report response message PLOAMu/DBRu frame is not received, all ONUs in the ONU historical registration authentication information table of the PON port using the ONU ID are listed as abnormal ONUs;
  • Step S516 The abnormal ONU is reported to the network management system or other operation and maintenance platform through an alarm or notification message, and carries the information in the ONU historical registration authentication information table of the PON port, and combines the user account information to find a specific location and the site. deal with.
  • an embodiment of the present invention provides an OLT, where the OLT includes a detection device of an abnormal optical network unit (ONU) in the foregoing embodiment.
  • ONU abnormal optical network unit
  • FIG. 6 is a structural block diagram of an OLT according to an embodiment of the present invention.
  • the OLT includes a PON MAC chip, and is configured to implement PON.
  • the physical layer and the link layer are related to the data judgment, processing, and forwarding; and the processor is configured to: execute the detection method instruction of the abnormal PON terminal.
  • an embodiment of the present invention provides a PON system, which is specifically used to detect an abnormal ONU or other PON terminal by using EPON and GOPN as an example, and other PON systems are similar.
  • the network topology of the PON system is shown in Figure 1.
  • the specific architecture includes EMS, OLT, ODN, and ONU.
  • the EMS is used to configure, manage, and maintain the OLT and the PON network.
  • the EMS maintains and manages the historical information of the OLT and the ONU, as well as related alarms and notification messages, and can complete specific exceptions based on related alarms and notification messages.
  • the ONU's judgment is related to the search for its specific physical location.
  • the OLT is used to initiate the discovery process of the abnormal ONU.
  • the ONU is assigned a logical link identifier (LLID)/ONU identifier (ONU ID) to complete the ONU registration and authentication on the OLT, and allocate corresponding uplink time slots for the ONU.
  • the ONU is in the OLT.
  • the OLT maintains the ONU online history information table and the abnormal LLID/ONU ID information table based on the PON, and detects the specific abnormal LLID/ONU ID by using the authorization packet. Depending on the detection status, the LLID/ONU ID is changed to ensure that the ONU service is normal.
  • the virtual ONU interface is created for the abnormal LLID/ONU ID to detect and combine the ONU history information or the optical detection to locate the abnormal ONU.
  • the ODN is used to connect an ONU of different numbers under the OLT. As a direct physical connection channel between the OLT and the ONU, it may be composed of multiple physical devices.
  • the ONU is used to assume the role of the terminal device of the home user, accepts the management of the OLT, accepts the logical link identifier (LLID)/ONU identifier (ONU ID) assigned by the OLT during the registration process, and uniformly allocates the slot window according to the OLT.
  • the upload data completes the service and responds to the authorization message sent by the OLT during this process.
  • a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • modules or steps of the present application can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the application is not limited to any particular combination of hardware and software.
  • the embodiment of the invention provides a method and a device for detecting an abnormal PON terminal, which solves the technical problem that the abnormal PON terminal that cannot illegally occupy the PON terminal identifier can be detected in the related art, thereby realizing the simpler and more flexible dynamic monitoring of the abnormal PON terminal. It also reduces the cost of solving the problem.

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Abstract

一种异常无源光网络终端的检测方法，包括：光线路终端OLT检测异常PON终端标识，其中，异常PON终端标识包括已经分配PON终端且在预定时间内没有收到注册完成消息的PON终端对应的PON终端标识；OLT锁定异常PON终端标识；OLT根据异常PON终端标识确定异常PON终端标识对应的PON终端为异常PON终端。上述方法解决了相关技术中不能检测非法占用PON终端标识的异常PON终端的技术问题，进而实现了对异常PON终端更加简单和灵活的动态监控，也降低了解决问题的成本。

Description

一种异常PON终端的检测方法及装置 技术领域
本申请涉及但不限于无源光网络(PON，Passive Optical Network)领域，具体涉及一种异常无源光网络终端的检测方法及装置。
背景技术
无源光网络系统由EMS(网管服务器，Element Management System)、OLT(光线路终端，Optical Line Terminal)、ODN(光分配网络，Optical Distribution Network)和若干个PON终端组成，其中PON终端包括ONU(光网络单元，Optical Network Unit)、ONT(光网络终端，Optical Network Terminal)等。以ONU为例，无源光网络系统组网结构如图1所示：OLT作为中心局端设备通过ODN网络连接汇聚多个ONU设备，ONU设备实现用户业务的接入，从而实现数据业务和配置管理等功能。PON网络作为“点对多点”的拓扑结构：从OLT到ONU的传输方向为下行方向(downstream)，下行方向采用广播方式(Broadcast)发送数据，由ONU根据数据标识判断数据是否有效并决定接收或丢弃；从ONU到OLT的传输方向为上行方向(upstream)，上行方向可以采用时分多址接入(TDMA，Time Division Multiple Access)方式。
在采用TDMA接入方式的PON系统中，在OLT控制下以PON口为单位为每个PON终端分配一个唯一的ONU标识作为ONU的链路标识，如EPON(基于以太网的无源光网络)系统中采用LIID(逻辑链路标识，Logical Link Identifier)作为PON终端的唯一标识；如GPON(吉比特无源光网络)系统中采用ONU ID(光网络单元标识，ONU Identifier)作为PON终端的唯一标识)，用于OLT区分管理每个PON终端。PON终端标识在PON终端注册时由OLT统一分配，并在PON终端注册成功后由OLT按PON终端标识分配不同的上行带宽时隙，所述各个时隙之间互相独立。在上述PON终端注册与正常工作的带宽分配中，PON终端只有在OLT分配不同的上行带宽时隙内打开光模块的上行发光，并响应OLT的各种消息。在授权时隙未到或关闭 后，PON终端必须关闭光模块的上行发光，只能监听OLT下行消息，并根据下行消息头中的PON终端标识进行接受或丢弃。当PON终端断电或离线后，其PON终端标识被OLT重新分配给其他新接入的PON终端，即PON终端标识采用动态分配机制。
现网中部分异常PON终端断电或离线后会非法占用OLT设备分配的PON终端标识，同时所述异常PON终端不能被检测出。这将影响OLT正常分配该PON终端标识的PON终端与OLT设备之间的交互，并导致被正常分配该PON终端标识的PON终端无法接受OLT控制，并出现掉线且无法完成注册，对业务造成严重影响。
针对相关技术中不能检测到非法占用PON终端标识的异常PON终端的技术问题，目前尚未提出有效的解决方案。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种异常PON终端的检测方法及装置，能够解决相关技术中不能检测非法占用PON终端标识的异常PON终端的技术问题。
根据本申请的一个方面，本发明实施例提供一种异常PON终端的检测方法，包括：光线路终端(OLT)检测异常PON终端标识，其中，所述异常PON终端标识包括已经分配PON终端标识且在预定时间内没有收到注册完成消息的PON终端对应的PON终端标识；所述OLT锁定所述异常PON终端标识；所述OLT根据所述异常PON终端标识确定所述异常PON终端标识对应的PON终端为异常PON终端。
可选地，所述OLT根据所述异常PON终端标识确定所述异常PON终端标识对应的PON终端为异常PON终端包括：所述OLT创建虚拟PON终端接口；所述OLT通过所述虚拟PON终端接口发送所述异常PON终端标识的授权消息；通过所述虚拟PON终端接口在发送所述授权消息之后检测到收光的情况下，所述OLT根据是否收到PON终端响应报文确定所述异常PON终 端标识对应的PON终端为异常PON终端。
可选地，所述OLT根据是否收到所述PON终端响应报文确定所述异常PON终端标识对应的PON终端为异常PON终端包括：在没有收到所述PON终端响应报文的情况下，所述OLT将PON口下所有采用所述PON终端标识的历史PON终端确定为异常PON终端。
可选地，所述OLT根据是否收到所述PON终端响应报文确定所述异常PON终端标识对应的PON终端为异常PON终端包括：在收到所述PON终端响应报文的情况下，所述OLT根据所述PON终端响应报文中的PON终端信息确定异常PON终端；或者，所述OLT进行光测距，根据光测距的结果确定异常PON终端。
可选地，所述PON终端响应报文至少携带以下PON终端信息之一：介质访问控制(MAC，Media Access Control)地址、序列号(SN，Serial Number)、逻辑ONU标识(LOID，Logical ONU Identifier)、收发光功率、距离。
根据本申请的另一个方面，本发明实施例还提供了一种异常PON终端的检测装置，应用于光线路终端(OLT)，包括：检测模块，设置为：检测异常PON终端标识，其中，所述异常PON终端标识为已经分配PON终端标识且在预定时间内没有收到注册完成消息的PON终端对应的PON终端标识；锁定模块，设置为：锁定所述异常PON终端标识；确定模块，设置为：根据所述异常PON终端标识确定所述异常PON终端标识对应的PON终端为异常PON终端。
可选地，所述确定模块包括：创建单元，设置为：创建虚拟PON终端接口；发送单元，设置为：通过所述虚拟PON终端接口发送所述异常PON终端标识的授权消息；确定单元，设置为：通过所述虚拟PON终端接口在发送所述授权消息之后检测到收光的情况下，根据是否收到PON终端响应报文确定所述异常PON终端标识对应的PON终端为异常PON终端。
可选地，所述确定单元包括：确定子单元，设置为：在没有收到所述PON终端响应报文的情况下，将PON口下所有采用所述PON终端标识的历史PON终端确定为异常PON终端。
可选地，所述确定单元包括：确定子单元，设置为：在收到所述PON终端响应报文的情况下，根据所述PON终端响应报文中的PON终端信息确定异常PON终端；或者，进行光测距，根据光测距的结果确定异常PON终端。
根据本申请的另一个方面，本发明实施例还提供了一种OLT，包括前述异常PON终端的检测装置。
根据本申请的另一个方面，本发明实施例还提供了一种OLT，包括PONMAC芯片以及处理器，所述处理器设置为执行前述异常PON终端检测方法指令。
此外，本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被执行时实现所述异常PON终端的检测方法。
通过本申请，光线路终端(OLT)检测异常PON终端标识，其中，所述异常PON终端标识包括已经分配PON终端标识且在预定时间内没有收到注册完成消息的PON终端对应的PON终端标识；所述OLT锁定所述异常PON终端标识；所述OLT根据所述异常PON终端标识确定所述异常PON终端标识对应的PON终端为异常PON终端，从而解决了相关技术中无法检测非法占用PON终端标识的异常PON终端的技术问题，进而实现了对异常PON终端更加简单和灵活的动态监控，也降低了解决问题的成本。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是根据相关技术中的PON网络拓扑图；
图2是本发明实施例的异常ONU的检测方法的流程图；
图3是本发明实施例的一种异常ONU的检测装置的结构框图；
图4是本发明实施例的EPON下异常ONU的检测的具体实现流程图；
图5是本发明实施例的GPON下异常ONU的检测的具体实现流程图；
图6是根据本发明实施例的一种OLT的结构框图。
本发明的实施方式
下文中将参考附图并结合实施例来详细说明本申请。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
本实施例提供了一种异常PON终端的检测方法，图2是根据本发明实施例的指令处理一种异常PON终端的检测方法的流程图，如图2所示，该流程包括如下步骤：
步骤S202，OLT检测异常PON终端标识，其中，异常PON终端标识为已经分配PON终端标识且在预定时间内没有收到注册完成消息的PON终端对应的PON终端标识；
步骤S204，OLT锁定异常PON终端标识；
步骤S206，OLT根据异常PON终端标识确定异常PON终端标识对应的PON终端为异常PON终端。
通过上述步骤，解决了相关技术中不能检测非法占用PON终端标识的异常PON终端的技术问题，进而实现了对异常PON终端更加简单和灵活的动态监控，也降低了解决问题的成本。
在一个可选实施例中，OLT可以通过虚拟PON终端接口检测完成步骤S206，包括：OLT创建虚拟PON终端接口；OLT通过虚拟PON终端接口发送所述异常PON终端标识的授权消息；通过虚拟PON终端接口在发送授权消息之后检测到收光的情况下，OLT根据是否收到PON终端响应报文确定异常PON终端标识对应的PON终端为异常PON终端。其中，所述PON终端响应报文中至少携带以下PON终端信息之一：介质访问控制(MAC，Media Access Control)地址、序列号(SN，Serial Number)、逻辑ONU标识(LOID)、收发光功率、距离。
上述OLT通过虚拟PON终端接口检测过程中，OLT存在以下情形：OLT检测无收光；OLT检测到收光，没有接收到报告响应报文；OLT检测到收光， 并且接收到报告响应报文。其中两种情形可以进一步区分进行检测，以进一步检测并定位异常PON终端，便于故障排查维修。针对OLT检测到收光，没有接收到报告响应报文的情形，在一个可选实施例中，OLT将PON口下所有采用PON终端标识的历史PON终端确定为异常PON终端。针对OLT检测到收光，并且接收到报告响应报文的情形，在一个可选实施例中，OLT进行光测距或根据PON终端报告响应报文中的PON终端信息确定异常PON终端。
在本实施例中还提供了一种异常无源光网络终端的检测装置，应用于OLT。该检测装置用于实现上述实施例及可选实施方式，已经进行过说明的不再赘述。如以下所使用的术语“模块”、“单元”、“子单元”可以是实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图3根据本发明实施例的一种异常无源光网络(PON)终端的检测装置的结构框图，该检测装置应用于光线路终端(OLT)。如图3示，该装置包括：检测模块32，设置为：检测异常PON终端标识，其中，所述异常PON终端标识为已经分配PON终端标识且在预定时间内没有收到注册完成消息的PON终端对应的PON终端标识；锁定模块34，设置为：锁定所述异常PON终端标识；确定模块36，设置为：根据所述异常PON终端标识确定所述异常PON终端标识对应的PON终端为异常PON终端。
在一个可选实施例中，检测模块32包括：创建单元，设置为：创建虚拟PON终端接口；发送单元，设置为：通过所述虚拟PON终端接口发送所述异常PON终端标识的授权消息；确定单元，设置为：通过所述虚拟PON终端接口在发送所述授权消息之后检测到收光的情况下，根据是否收到PON终端响应报文确定所述异常PON终端标识对应的PON终端为异常PON终端。
在一个可选实施例中，确定单元包括：确定子单元，设置为：在没有收到PON终端响应报文的情况下，将PON口下所有采用所述PON终端标识的历PON终端确定为异常PON终端。在一个可选实施例中，确定子单元还可以设置为：在收到PON终端报告响应报文的情况下，根据所述PON终端响应报文中的PON终端信息确定异常PON终端；或者，进行光测距，根据光 测距的结果确定异常PON终端。
以EPON下ONU注册为例，其他PON系统下PON终端注册流程类似，采用TDMA接入方式的EPON系统中ONU的注册流程如下：
EPON系统采用多点控制协议(MPCP，Multi-Point Control Protocol)定义了点到多点光网络的MAC控制机制，通过MPCP协议操作，在自动发现模式中完成ONU的自动发现和注册、ONU的时钟同步以及动态测距；在普通工作模式中完成对ONU注册状态的监控以及ONU的动态带宽分配。MPCP协议定义了5种协议帧用于PON网络的管理操作：
1)授权帧(GATE)：在自动发现模式与工作模式中发送授权时间片给ONU，ONU根据所分配的时间片传送数据；
2)报告帧(REPORT)：ONU向OLT报告ONU的状态以及请求；
3)注册请求帧(REGISTER_REQ)：ONU向OLT发送注册请求；
4)注册帧(REGISTER)：用于OLT响应ONU的REGISTER_REQ消息；
5)注册应答帧(REGISTER_ACK)：ONU发给OLT指示整个注册过程的结束。
上述授权帧以及三种注册帧用于自动发现模式，而工作模式时，只包括授权帧与报告帧的交互。
MPCP默认不允许ONU传输，即ONU在获得OLT授权前，不能转发任何数据(也不能开启激光器)。MPCP通过自动发现模式检测新连接的ONU。具体步骤如下：
步骤1：OLT启动自动发现模式并分配一个发现窗口，以广播方式发送发现授权帧(GATE)消息，通告发现时隙的起始时间及长度；
步骤2：未初始化的ONU响应发现GATE消息，完成OLT与ONU的时钟同步；ONU本地时钟达到发现时隙后，在随机时延后ONU发送REGISTER_REQ消息，该消息包含ONU的源地址以及代表发送时的ONU本地时钟标签；
步骤3：OLT解析确认REGISTER_REQ消息后，用ONU的MAC地址 将REGISTER消息发送给正在初始化的ONU，该消息包含OLT分配用于唯一标识ONU的逻辑链路标识(LLID)；
步骤4：ONU接收REGISTER和普通GATE消息后，将在分配的授权时隙中发送一个REGISTER_ACK消息告知OLT它已经成功解析了REGISTER消息，完成整个自动发现过程。
下面以EPON为例，描述EPON下异常ONU检测方法的可选实施方式，以解决EPON下不能检测非法占用LIID的异常ONU的技术问题。
图4是本发明实施例的EPON下异常ONU的检测的可选实现流程图，如图4所示，该方法包括如下步骤：
步骤S402：OLT维护PON口下ONU历史注册认证信息表，内容包括但不限于LLID、ONU类型、MAC地址、序列号(SN)、LOID、收发光功率、距离等ONU参数，可选条件下OLT同时维护异常LLID记录表；
其中，PON口下ONU历史注册认证信息表以PON口为单位基于LLID记录注册认证的ONU信息。由于LLID动态分配，因此可以记录一定周期内的ONU历史信息。可选地，记录ONU信息周期可人为指定，记录同一LLID被多次分配的相关ONU信息。可选地，记录ONU信息周期可按策略配置，即根据步骤S404的检测结果，记录ONU标识正常分配与异常分配两个周期内的相关ONU信息。
步骤S404：OLT周期性检测PON口下发现过程中已经分配LLID，且在连续的几个周期内(可人工配置)无法收到ONU的注册完成消息的ONU，记录其ONU的LLID，将该LLID设置为可疑LLID，计入异常ONU标识记录表；
步骤S406：OLT锁定异常LLID，不分配给实际的ONU，然后给实际发起注册请求的ONU分配其他的LLID，使其注册成功；
步骤S408：OLT创建虚拟ONU接口，进行光检测。
OLT通过人机命令/网管或第三方运维系统在对应PON接口上创建ONU，并配置该ONU接口属性为虚拟，当ONU接口属性为虚拟时，通过人机命令/网管或第三方运维系统将异常LLID与该ONU接口绑定，将异常LLID 分配给此虚拟ONU接口，通过虚拟ONU接口发送异常LLID的授权消息MPCP GATE帧，OLT完成正常的授权，针对此虚拟ONU接口进行光检测。
步骤S410：OLT判断是否接收到收光，以及有无响应报文MPCP REPORT帧；
当检测无收光，则结束；
当检测到收光，并且接收到了报告响应报文，则跳转到步骤S412；
当检测到收光，但没有接收到报告响应报文，则跳转到步骤S414；
步骤S412：当OLT检测到收光，并且接收到报告响应报文MPCP REPORT帧，OLT根据报告响应报文或光测距定位异常ONU；
其中，报告响应报文至少携带MAC地址、序列号(SN)、LOID、收发光功率、距离等ONU参数的其中之一，OLT比对报告响应报文与该PON口下ONU历史注册认证信息表，确定具体异常ONU，例如OLT可以比对ONU的MAC地址，找出MAC地址相同的ONU，确定具体异常ONU。
当ONU上行报告响应报文携带的MAC地址等ONU参数在OLT维护的ONU历史注册认证信息中没有相符参数，则通过光测距进行测距信息比对，找出测距结果近似的ONU，并将该ONU列入异常ONU；或者，直接通过光测距进行测距信息比对，找出测距结果近似的ONU，并将该ONU列入异常ONU；
步骤S414：当检测到收光，但没有接收到报告响应报文，将该PON口下ONU历史注册认证信息表中所有采用该LLID的ONU列为异常ONU；
步骤S416：将上述异常ONU通过告警或通知消息上报网管或其他运维平台，并携带其在该PON口下ONU历史注册认证信息表中的信息，并结合用户台帐信息，查找具体位置并现场处理。
图5是本发明实施例的GPON下异常ONU的检测的具体实现流程图。如图5所示，该方法包括如下步骤：
步骤S502：OLT维护PON口下ONU历史注册认证信息表，内容包括但不限于序列号(SN)、ONU类型、MAC地址、ONU ID(光网络单元标识，ONU Identifier)、收发光功率、距离等，可选条件下OLT同时维护异常ONU 标识记录表；
其中，PON口下ONU历史注册认证信息表以PON口为单位基于ONU ID记录注册认证的ONU信息。由于ONU ID动态分配，因此可以记录一定周期内的ONU历史信息。可选地，记录ONU信息周期可人为指定，记录同一ONU ID被多次分配的相关ONU信息。可选地，记录ONU信息周期可按策略配置，即根据步骤S504的检测结果，记录ONU标识正常分配与异常分配两个周期内的相关ONU信息。
步骤S504：OLT周期性检测PON口下发现过程中已经分配ONU ID，且在连续的几个周期内(可人工配置)无法收到ONU的注册完成消息的ONU，记录其ONU的ONU ID，将该ONU ID设置为可疑ONU ID，计入异常ONU标识记录表；
步骤S506：OLT锁定异常ONU ID，不分配给实际的ONU，然后给实际发起注册请求的ONU分配其他的ONU ID，使其注册成功；
步骤S508：OLT创建虚拟ONU接口，进行光检测。
OLT通过人机命令/网管或第三方运维系统在对应PON接口上创建ONU，并配置该ONU接口属性为虚拟，当ONU接口属性为虚拟时，通过人机命令/网管或第三方运维系统将ONU ID与该ONU接口绑定，通过虚拟ONU接口发送异常ONU ID的授权消息GTC/BWmap(GPON传输汇聚/带宽分配帧)，OLT完成正常的授权，针对此虚拟ONU接口进行光检测。
步骤S510：OLT判断是否接收到收光，以及有无响应报文PLOAMu/DBRu帧(上行物理层操作管理维护/上行动态带宽报告帧)，
当检测无收光，则结束；
当检测到收光，并且接收到了报告响应报文，则跳转到步骤S512；
当检测到收光，但没有接收到报告响应报文，则跳转到步骤S514；
步骤S512：当OLT检测到收光，并且接收到报告响应报文PLOAMu/DBRu帧，OLT根据报告响应报文或光测距定位异常ONU；
其中，报告响应报文至少携带MAC地址、SN序列号、LOID、收发光功率、距离等ONU参数的其中之一，OLT比对报告响应报文与该PON口下 ONU历史注册认证信息表，确定具体异常ONU，例如OLT可以比对ONU的MAC地址，找出MAC地址相同的ONU，确定具体异常ONU。
当ONU上行报告响应报文携带的MAC地址等ONU参数在OLT维护的ONU历史注册认证信息中没有相符参数，则通过光测距进行测距信息比对，找出测距结果近似的ONU，并将该ONU列入异常ONU；或者，直接通过光测距进行测距信息比对，找出测距结果近似的ONU，并将该ONU列入异常ONU。
步骤S514：当检测到收光，但没有接收到报告响应报文PLOAMu/DBRu帧，将该PON口下ONU历史注册认证信息表中所有采用该ONU ID的ONU列为异常ONU；
步骤S516：将上述异常ONU通过告警或通知消息上报网管或其他运维平台，并携带其在该PON口下ONU历史注册认证信息表中的信息，并结合用户台帐信息，查找具体位置并现场处理。
另一方面，本发明实施例提供了一种OLT，该OLT包括前述实施例中异常光网络单元(ONU)的检测装置。
另一方面，本发明实施例提供了另一种OLT，图6是根据本发明实施例的一种OLT的结构框图，如图6所示，该OLT包括PON MAC芯片，设置为：实现与PON物理层与链路层相关数据判断、处理与转发；处理器，设置为：执行所述异常PON终端的检测方法指令。
另一方面，本发明实施例提供了一种PON系统，具体以EPON和GOPN为例，用于检测异常ONU或其它PON终端，其它PON系统类似。
PON系统的网络拓扑图参见图1所示，具体架构包括EMS、OLT、ODN、ONU。其中，EMS，用于对OLT以及PON网络的配置、管理以及维护等工作；EMS网管维护并管理OLT、ONU的历史信息以及相关告警与通知消息，并可根据相关告警与通知消息完成对具体异常ONU的判断与其具体物理位置的查找。OLT，用于启动异常ONU的发现过程，为ONU分配逻辑链路标识(LLID)/ONU标识(ONU ID)完成ONU在OLT上注册与认证，并为ONU分配相应的上行时隙，ONU在OLT为其配置分配的时隙中上传数据。 上行方向每个时隙正常情况只被该ONU独占。OLT维护基于PON为单位维护ONU上线历史信息表以及异常LLID/ONU ID信息表，通过授权报文的检测出具体的异常LLID/ONU ID。根据检测情况通过改变LLID/ONU ID的分配方式，保证ONU业务正常；并通过针对异常LLID/ONU ID创建虚拟ONU接口方式检测并结合ONU历史信息或光检测定位异常ONU。ODN，用于在OLT下连接数量不等的ONU，作为OLT和ONU之间直接的物理连接通道，可能由多个物理器件组合而成。ONU，用于承担家庭用户的终端设备的角色，接受OLT的管理，在注册过程中接受OLT分配的逻辑链路标识(LLID)/ONU标识(ONU ID)；并根据OLT统一分配时隙窗口中上传数据完成业务，并在此过程中响应OLT发出的授权消息。
在另外一个实施例中，还提供了一种软件，该软件用于执行上述实施例及可选实施方式中描述的技术方案。
在另外一个实施例中，还提供了一种存储介质，该存储介质中存储有上述软件，该存储介质包括但不限于：光盘、软盘、硬盘、可擦写存储器等。
显然，本领域的技术人员应该明白，上述的本申请的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本申请不限制于任何特定的硬件和软件结合。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。
工业实用性
本发明实施例提供一种异常PON终端的检测方法及装置，解决了相关技术中无法检测非法占用PON终端标识的异常PON终端的技术问题，进而实现了对异常PON终端更加简单和灵活的动态监控，也降低了解决问题的成本。

Claims (13)

  1. 一种异常无源光网络PON终端的检测方法，包括：
    光线路终端OLT检测异常PON终端标识，其中，所述异常PON终端标识包括已经分配PON终端且在预定时间内没有收到注册完成消息的PON终端对应的PON终端标识；
    所述OLT锁定所述异常PON终端标识；
    所述OLT根据所述异常PON终端标识确定所述异常PON终端标识对应的PON终端为异常PON终端。
  2. 根据权利要求1所述的方法，其中，所述OLT根据所述异常PON终端标识确定所述异常PON终端标识对应的PON终端为异常PON终端包括：
    所述OLT创建虚拟PON终端接口；
    所述OLT通过所述虚拟PON终端接口发送所述异常PON终端标识的授权消息；
    通过所述虚拟PON终端接口在发送所述授权消息之后检测到收光的情况下，所述OLT根据是否收到PON终端响应报文确定所述异常PON终端标识对应的PON终端为异常PON终端。
  3. 根据权利要求2所述的方法，其中，所述OLT根据是否收到所述PON终端响应报文确定所述异常PON终端标识对应的PON终端为异常PON终端包括：
    在没有收到所述PON终端响应报文的情况下，所述OLT将PON口下所有采用所述PON终端标识的历史PON终端确定为异常PON终端。
  4. 根据权利要求2所述的方法，其中，所述OLT根据是否收到所述PON终端响应报文确定所述异常PON终端标识对应的PON终端为异常PON终端包括：
    在收到所述PON终端响应报文的情况下，所述OLT根据所述PON终端响应报文中的PON终端信息确定异常PON终端；或者，所述OLT进行光测距，根据光测距的结果确定异常PON终端。
  5. 根据权利要求2-4中任一项所述的方法，其中，所述PON终端响应报文至少携带以下PON终端信息之一：介质访问控制MAC地址、序列号SN、逻辑光网络单元标识LOID、收发光功率、距离。
  6. 一种异常无源光网络PON终端的检测装置，应用于光线路终端OLT，包括：
    检测模块，设置为：检测异常PON终端标识，其中，所述异常PON终端标识为已经分配PON终端标识且在预定时间内没有收到注册完成消息的PON终端对应的PON终端标识；
    锁定模块，设置为：锁定所述异常PON终端标识；
    确定模块，设置为：根据所述异常PON终端标识确定所述异常PON终端标识对应的PON终端为异常PON终端。
  7. 根据权利要求6所述的装置，其中，所述确定模块包括：
    创建单元，设置为：创建虚拟PON终端接口；
    发送单元，设置为：通过所述虚拟PON终端接口发送所述异常PON终端标识的授权消息；
    确定单元，设置为：通过所述虚拟PON终端接口在发送所述授权消息之后检测到收光的情况下，根据是否收到PON终端响应报文确定所述异常PON终端标识对应的PON终端为异常PON终端。
  8. 根据权利要求7所述的装置，其中，所述确定单元包括：
    确定子单元，设置为：在没有收到所述PON终端响应报文的情况下，将PON口下所有采用所述PON终端标识的历史PON终端确定为异常PON终端。
  9. 根据权利要求7的装置，其中，所述确定单元包括：
    确定子单元，设置为：在收到所述PON终端响应报文的情况下，根据所述PON终端响应报文中的PON终端信息确定异常PON终端；或者，进行光测距，根据光测距的结果确定异常PON终端。
  10. 根据权利要求7-9任一项所述的装置，其中，所述PON终端响应报 文至少携带以下PON终端信息之一：介质访问控制MAC地址、序列号SN、逻辑光网络单元标识LOID、收发光功率、距离。
  11. 一种光线路终端OLT，包括如权利要求6-9中任一项所述的装置。
  12. 一种光线路终端OLT，包括无源光网络PON介质访问控制MAC芯片，其特征在于，所述OLT还包括处理器，设置为：执行权利要求1-5任一项所述的方法指令。
  13. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被执行时实现权利要求1至5任一项所述的方法。
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