WO2011022966A1 - 汇聚节点联动切换方法及汇聚节点和系统 - Google Patents

汇聚节点联动切换方法及汇聚节点和系统 Download PDF

Info

Publication number
WO2011022966A1
WO2011022966A1 PCT/CN2010/071335 CN2010071335W WO2011022966A1 WO 2011022966 A1 WO2011022966 A1 WO 2011022966A1 CN 2010071335 W CN2010071335 W CN 2010071335W WO 2011022966 A1 WO2011022966 A1 WO 2011022966A1
Authority
WO
WIPO (PCT)
Prior art keywords
olt
primary
port
message
aggregation node
Prior art date
Application number
PCT/CN2010/071335
Other languages
English (en)
French (fr)
Inventor
郑若滨
沈承虎
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP10811132A priority Critical patent/EP2451119A4/en
Publication of WO2011022966A1 publication Critical patent/WO2011022966A1/zh
Priority to US13/365,744 priority patent/US8755685B2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/03—Arrangements for fault recovery
    • H04B10/032—Arrangements for fault recovery using working and protection systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/22—Alternate routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a convergent node linkage switching method and a convergence node and system. Background technique
  • Passive Optical Network (PON) technology is a point-to-multipoint (P2MP) optical access technology, consisting of Optical Line Termination (OLT), Optical Splitter/ Extender Box (EB), Optical Network Unit (ONU) / Optical Network Terminal (ONT) and the optical fiber of the connected device.
  • P2MP point-to-multipoint
  • OLT Optical Line Termination
  • EB Optical Splitter/ Extender Box
  • ONU Optical Network Unit
  • ONT Optical Network Terminal
  • the OLT acts as a central office device and is connected to an optical splitter or extender through a trunk fiber.
  • the optical splitter/EB connects each ONU through a separate branch fiber.
  • the optical splitter / between the EB and the OLT is the main fiber, and the optical splitter / EB and ONU are several branch fibers.
  • the optical splitter/EB implements the splitting function, and sends the downstream optical signal of the OLT to all ONUs through the branch fiber; in the uplink direction (ONU->OLT), optical splitter/EB
  • the optical signal convergence function is implemented, and the optical signals sent by all ONUs are aggregated and sent to the OLT through the backbone optical fiber.
  • the 1 + 1 protection architecture as shown in Figure 1 is usually adopted, and the main and standby two sets of trunk optical fibers and the OLT are used to form the trunk optical fiber.
  • the standby OLT takes over the ONU of the original primary OLT in the event of a trunk fiber failure or an OLT failure.
  • the aggregation node (Aggregation Node, AggN, or Aggregation Switch, AGS) passes through the primary and secondary ports respectively.
  • the connection or the aggregation node also has two sets of active and standby aggregation nodes.
  • the active and standby aggregation nodes are connected to the active and standby OLTs respectively. For the same reason, you can also use the ⁇ :1 ⁇ protection architecture.
  • the inventors of the present invention found that when the primary OLT fails, or the backbone optical fiber between the primary OLT and the optical splitter or extender fails, the corresponding PON port of the primary OLT switches.
  • the aggregation node cannot be advertised.
  • the link between the aggregation node and the active OLT cannot be switched to the link between the aggregation node and the standby OLT. As a result, the communication link cannot be restored.
  • the embodiments of the present invention provide a convergence node switching method and a convergence node and a system, which can implement active/standby switching of an aggregation node.
  • the embodiment of the invention provides a method for switching a node aggregation switch, which includes:
  • the aggregation node listens to the information transmitted between the primary optical line terminal OLT and the broadband network gateway BNG connected thereto; and determines whether a link fault or a device failure occurs on the primary OLT side according to the intercepted information;
  • the aggregation node When a link failure or device failure occurs on the primary OLT side, the aggregation node enables a backup port connected to the standby OLT, and closes the primary port connected to the primary OLT.
  • An embodiment of the present invention provides a convergence node, including:
  • a listening unit configured to listen to information transmitted between the primary OLT and the BNG connected thereto; and a fault decision unit, configured to determine, according to the information that the listening unit listens, whether the link occurs on the primary OLT side Failure or equipment failure;
  • the port switching unit is configured to enable a backup port connected to the standby OLT and close the primary port connected to the primary OLT when a link failure or a device failure occurs on the primary OLT side.
  • An embodiment of the present invention provides an optical network protection system, including: a convergence node, a BNG connected to the aggregation node, and at least one active OLT and at least one standby OLT connected to the aggregation node;
  • the aggregation node listens to the information transmitted between the at least one primary OLT and the BNG connected thereto; and determines whether a link fault or a device fault occurs on the primary OLT side according to the intercepted information;
  • the aggregation node When a link failure or device failure occurs on the primary OLT side, the aggregation node enables a backup port connected to the standby OLT, and closes the primary port connected to the primary OLT.
  • the sink node can detect the fault in the timely manner by detecting the information transmitted between the active OLT and the Broadband Network Gateway (BNG), and when the fault occurs,
  • BNG Broadband Network Gateway
  • the local protection scheme enables the corresponding backup port of the standby OLT connection corresponding to the primary OLT, and closes the primary port connected to the primary OLT.
  • the aggregation node performs linkage switching to ensure normal communication.
  • DRAWINGS 1 is a flowchart of a method for switching a node of a sink node according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for switching a node of a sink node according to Embodiment 2 of the present invention
  • Figure 3 (a) is a networking diagram of a 1+1 mode applied to a method according to an embodiment of the present invention
  • Figure 3 (b) is a network diagram of an N+1 mode applied by an embodiment of the present invention.
  • Figure 4 is a flow chart of an application example of the first embodiment
  • FIG. 6 is a schematic structural diagram of a convergence node of Embodiment 3.
  • FIG. 7 is a schematic structural diagram of a fourth embodiment of an optical network protection system.
  • the embodiments of the present invention provide a convergence node switching method and a convergence node and a system, and the aggregation node listens to information transmitted between the primary optical line terminal OLT and the broadband network gateway BNG connected thereto; and determines according to the intercepted information. Whether a link fault or device fault occurs on the primary OLT side; when a link fault or device fault occurs on the primary OLT side, the sink node enables a backup port connected to the standby OLT, and closes the primary connection with the primary OLT. port.
  • the first embodiment of the present invention the flow chart is as shown in FIG. 1 , and includes: A1, the aggregation node listens to the information transmitted between the active OLT and the BNG connected thereto; Listening to a variety of information passed between the primary OLT and the BNG connected to it, the following examples:
  • the aggregation node listens to the PON port status information that the primary OLT periodically reports to the BNG through the Access Node Control Protocol (ANCP)/Operation Administration Maintenance (OAM) message; or, the sink node listens 0NU periodically reports the digital subscriber line (DSL) port status information, ANCP message or 0AM message of the BNG through the ANCP message or the 0AM message, the DSL port status information indicating between the ONU and the primary 0LT
  • the backbone optical fiber is normal; or, the aggregation node listens to the connectivity detection message periodically transmitted between the primary 0LT and the BNG; or the aggregation node listens to the connectivity detection message periodically transmitted between the primary and secondary 0LTs, and the specific connectivity
  • the sex detection message may be: 0AM message or Bidirectional Forwarding Detection (BFD) message.
  • A2 Determine whether a link fault or a device fault occurs on the primary OLT side according to the intercepted information; if yes,
  • the link fault or the device fault that occurs on the active OLT side can be obtained in multiple manners.
  • the sink node when the sink node does not receive the ANCP message or the OAM message or the connectivity check message sent by the active OLT or the ONU within a certain period of time, it determines that the link between the active OLT or the active OLT and the aggregation node is faulty.
  • the sink node when the sink node receives the ANCP message/OAM message indicating that the corresponding PON port is faulty, it determines that the primary fiber link corresponding to the PON port or the PON port is faulty.
  • the aggregation node enables the backup port connected to the standby OLT, and closes the primary port connected to the primary OLT. Specifically, the aggregation node searches for the local port backup list according to the identifier of the primary port that is connected to the active OLT, and obtains the identifier of the backup port corresponding to the identifier of the primary port; and starts the backup according to the identifier of the backup port. The port closes the primary port according to the identity of the primary port.
  • the sink node can detect the fault according to the intercepted information by listening to the information transmitted between the active OLT and the BNG, and when the fault occurs, the local protection scheme is enabled, and the corresponding The backup port connected to the standby OLT corresponding to the primary OLT closes the primary port connected to the primary OLT.
  • the aggregation node performs linkage switching to ensure normal communication.
  • Embodiment 2 A method for switching a joint node of a sink node, as shown in FIG. 2, the flowchart includes:
  • the active/standby switchover message can be implemented by using multiple existing messages, for example, an ANCP message or an OAM message.
  • the aggregation node enables the backup port connected to the standby OLT, and closes the primary port connected to the primary OLT.
  • the specific aggregation node searches for the local port according to the identifier of the primary port in the active/standby switch message.
  • the backup list obtains the identifier of the backup port corresponding to the identifier of the primary port; the backup port is opened according to the identifier of the backup port, and the primary port is closed according to the identifier of the faulty port. It can be understood that after the step B2, the method further includes: forwarding the active/standby switchover message to the standby OLT to start the backup of the backup OLT to take over the active OLT.
  • FIG. 3 is a schematic diagram of a networking system applied by the method according to the embodiment of the present invention.
  • FIG. 3( a ) is a schematic diagram of a networking in a 1+1 mode
  • FIG. 3 ( b ) is a schematic diagram of a networking in an N+1 mode.
  • Figure 3 (a) contains multiple ONUs connected to the primary OLT (OLTm) through multiple optical splitters or EBs, and then connected to the aggregation node, each optical splitter or EB through an enhanced EB and standby OLT ( OLTn+1) is connected, and then connected to the aggregation node.
  • the aggregation node is connected to the BNG, and finally forms a transmission path from the BNG to the ONU.
  • the port of the aggregation node can be a physical port or a logical port, for example, a virtual local area network (VLAN) port.
  • the aggregation port has a corresponding relationship with the OLT.
  • the aggregation port also has a corresponding relationship with the PON port of the OLT.
  • Figure 3 (b) contains n ONUs (ONU1 ONUn), and N ONUs pass the optical splitter.
  • EB is connected to n primary OLTs (OLTm) and one standby OLT (OLTn+1), and n OLTm and OLTn+1 are connected to the BNG through the aggregation node.
  • the first application example of the first embodiment, the flowchart shown in FIG. 4, includes:
  • the device-level PON linkage protection process is as shown in Figure 3.
  • the primary OLTm when the primary OLTm is working normally, the primary OLTm periodically reports the PON port status information to the BNG through the ANCP message or the OAM message, or the ONU periodically reports the status information of the ONU DSL port through the ANCP message or the OAM message.
  • BNG indicating that the primary OLTm/mth trunk fiber is normal; or, the primary OLTm and the BNG periodically transmit connectivity detection messages (such as OAM messages or BFD messages); Sexually communicate connectivity detection messages (such as OAM messages or BFD messages).
  • the cycle can be set to 10ms in order to ensure fast switching within 50ms.
  • the active node of the aggregation node works, and sends and receives data packets from or to the primary OLT;
  • the primary OLTm fails or the link between the primary OLTm and the aggregation node fails, the primary OLTm will not be able to report the status information of any PON port through the ANCP message or the OAM message, or the ONU will not be able to report through the ANCP message or the OAM message.
  • Status information of any DSL port, or the primary OLTm cannot send a connectivity check message;
  • the primary OLTm will use the LOS (Loss of Signal)/LOF (Lost Loss of Frame) alarm of the PON link to pass the ANCP message or the corresponding PON port on the OAM message.
  • the sink node performs Snooping of the ANCP/BFD/OAM message.
  • the sink node finds that it cannot receive the ANCP message or the connectivity check message that should be sent by the active OLTm/ONU, it determines the primary OLTm or the primary use. The link between the OLTm and the sink node is faulty;
  • the sink node finds that it cannot receive an ANCP message or an OAM message or a connectivity check message corresponding to a certain PON port that should be sent by the primary OLTm, or when the sink node receives an ANCP message corresponding to a certain PON port or If the OAM message indicates that the corresponding PON port is faulty, it is determined that the primary fiber link or the PON port is faulty.
  • the aggregation node is the fault type and fault port of the PON, and the original primary port of the aggregation node is closed, and the corresponding backup port (or protection port) of the aggregation node is enabled;
  • the type of the fault may be the primary OLTm fault, or the primary OLTm and the primary
  • the link between the aggregation nodes is faulty or the primary fiber link corresponding to a PON port of the primary OLTm is faulty; for example, the backup VLAN port is searched according to the faulty VLAN port in the ANCP message or OAM message, and the downlink media access control (Media Access Control) , MAC )
  • the frame will be forwarded to the backup port according to the VLAN; it may be the corresponding backup port that enables the same aggregation node or another aggregation node;
  • the OLT can detect the fault of the primary optical link by monitoring the uplink optical signal.
  • the backup OLT takes over all the ONUs under the primary OLTm; when the primary optical link or PON port fails, the backup OLT takes over the primary OLTm failed port. ONU;
  • the standby node of the aggregation node works, and sends and receives data packets from or to the standby OLT.
  • the active/standby switchover message is directly delivered by the BNG, and the sink node listens to the active/standby switchover message, and then initiates the port switchover.
  • the application example of the second embodiment is as shown in FIG. 5, and includes:
  • the BNG finds that it cannot receive the ANCP message or the connectivity detection message corresponding to a certain PON port that should be sent by the primary OLTm, or when the BNG receives an ANCP message or an OAM message corresponding to a certain PON port, the corresponding PON is indicated. If the port is faulty, it is determined that the primary fiber link or the PON port is faulty.
  • the BNG initiates the master/slave switchover of the OLT or the master/change of the PON port by issuing a handover command (such as an ANCP message);
  • the aggregation node performs Snooping of the ANCP message, and closes the original primary port of the aggregation node.
  • the aggregation node enables the corresponding backup port (or protection port); for example, the ANCP message or the VLAN identifier of the faulty port in the OAM message ( VLAN ID, VID) Find the VID of the backup port. For the downlink MAC frame, it will be forwarded according to the VID of the backup port.
  • the aggregation node performs ANCP message relay
  • the backup OLT receives the switching command.
  • the backup OLT takes over all the ONUs under the primary OLTm.
  • the backup OLT opens. Protection port, taking over the ONU under the main OLTm fault port;
  • step C8 A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be completed by a program instructing related hardware.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: ROM, RAM, disk or CD, etc.
  • Embodiment 3 A convergence node, a schematic structural diagram is shown in FIG. 6, and includes:
  • the intercepting unit 610 is configured to listen to information transmitted between the primary OLT and the BNG connected thereto, and the fault determining unit 620 is configured to determine, according to the information that the listening unit listens, whether the primary OLT side occurs.
  • the port switching unit 630 is configured to enable a backup port connected to the standby OLT and close the primary port connected to the primary OLT when the link failure or device failure occurs on the primary OLT side.
  • the listening unit may be specifically configured to: listen to the PON port status information that the primary OLT periodically sends to the BNG through the ANCP message or the OAM message; or, listen to the ONU periodically to pass the ANCP message.
  • the OAM message is sent to the BNG DSL port status information, the DSL port status information indicates that the backbone optical fiber between the ONU and the active OLT is normal; or, the interception listens between the primary OLT and the BNG periodically.
  • the connectivity detection message is transmitted; or, the connectivity detection message periodically transmitted between the active and standby OLTs is intercepted.
  • the fault decision unit 620 can be specifically configured to:
  • the listening unit When the listening unit does not receive the ANCP message or the OAM message or the connectivity detection message sent by the primary OLTm or the ONU within a certain period of time, it determines that the link between the primary OLTm or the primary OLTm and the aggregation node is faulty.
  • the listening unit When the listening unit detects an ANCP message or an OAM message that contains PON port failure information, it is a barrier. '
  • the listening unit When the listening unit detects the message sent by the BNG to the standby OLT to take over the active/standby switchover of the primary OLT, it determines that the primary OLT is faulty or the link between the primary OLT and the sink node is faulty.
  • the aggregation node provided by the embodiment of the present invention can detect the fault according to the intercepted information by intercepting the information transmitted between the active OLT and the BNG, and activate the local protection scheme when the fault occurs, and enable the corresponding solution.
  • the backup port connected to the standby OLT corresponding to the OLT is closed, and the primary port connected to the primary OLT is closed.
  • the aggregation node performs linkage switching to ensure normal communication.
  • Embodiment 4 is an optical network protection system.
  • the schematic diagram of the structure is as shown in FIG. 7.
  • the method includes: a convergence node 710, a broadband network gateway (BNG) 720 connected to the aggregation node, and at least one primary optical line terminal connected to the aggregation node. (OLT) 731 and at least one standby OLT 732;
  • BNG broadband network gateway
  • the aggregation node 710 listens to the information transmitted between at least one of the primary OLT 731 and the BNG 720 connected thereto; and determines whether a link failure or a device failure occurs on the primary OLT 731 side according to the intercepted information;
  • the aggregation node When it is known whether a link failure or a device failure occurs on the primary OLT 731 side, the aggregation node enables the backup port connected to the OLT 732 and closes the primary port connected to the primary OLT 731.
  • the third convergence node and the fourth embodiment of the optical network protection system can be operated, refer to the description of the foregoing method embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Small-Scale Networks (AREA)

Abstract

本发明公开了汇聚节点联动切换方法及汇聚节点和系统。本发明实施例中，汇聚节点通过侦听主用OLT和BNG之间传递的信息，可以根据侦听的信息及时发现故障，并在发生故障时，并开启本地的保护方案，启用相应的与所述主用OLT对应的备用OLT连接的备份端口，关闭与所述主用OLT连接的主用端口。实现了在主用OLT切换到备用OLT时，汇聚节点进行联动切换，保证了通信的正常进行。

Description

汇聚节点联动切换方法及汇聚节点和系统 技术领域
本发明涉及通信技术领域，具体涉及汇聚节点联动切换方法及汇聚节点和 系统。 背景技术
无源光网络（ Passive Optical Network, PON )技术是一种点对多点（ P2MP ) 方式的光接入技术， 由光线路终端 （ Optical Line Termination, OLT ), 光分路 器 (Optical splitter)/延长器（ Extender Box, EB )， 光网络单元 (Optical Network Unit，ONU) /光网络终端（Optical Network Terminal, ONT )以及连接设备的光 纤组成。
OLT作为局端设备， 通过一根主干光纤与光分路器或延长器连接， 光分路 器 /EB通过单独的分支光纤连接每一个 ONU。 光分路器 /EB与 OLT之间为主干 光纤，光分路器 /EB与 ONU之间为若干个分支光纤。下行方向（OLT"~>ONU )， 光分路器 /EB实现分光功能， 通过分支光纤将 OLT的下行光信号发送给所有的 ONU; 上行方向（ONU—>OLT )， 光分路器 /EB实现光信号汇聚功能， 将所有 ONU发送的光信号汇聚， 通过主干光纤发送给 OLT。
目前， 为了抵抗光分路器或 EB与 OLT之间的主干光纤故障或 OLT故障，通 常采用如图 1所示的 1 + 1保护架构， 采用主备两套主干光纤及 OLT, 构成对主 干光纤及 OLT的 1 + 1保护， 备用 OLT在主干光纤故障或 OLT故障时接管原主用 OLT下的 ONU， 汇聚节点 ( Aggregation Node, AggN,或 Aggregation Switch, AGS )通过主备端口分别与主备 OLT相连接， 或者汇聚节点也有主备汇聚节点 两套， 主备汇聚节点分别与主备 OLT相连接。 同理， 还可以采用 Ν:1 ΡΟΝ保护 架构。
在对现有技术的研究和实践过程中， 本发明的发明人发现当主用 OLT故 障，或主用 OLT与光分路器或延长器之间的主干光纤故障，主用 OLT相应 PON 端口会切换到备用 OLT时， 无法通告汇聚节点进行联动切换， 进而无法将汇 聚节点与主用 OLT的链路联动切换到汇聚节点与备用 OLT的链路上， 致使通 信链路无法恢复正常。 发明内容
本发明实施例提供汇聚节点联动切换方法及汇聚节点和系统，可以实现汇 聚节点端口的主备切换。
本发明实施例提供一种汇聚节点联动切换方法， 包括：
汇聚节点侦听与其连接的主用光线路终端 OLT和宽带网络网关 BNG之间 传递的信息； 并根据侦听的信息确定主用 OLT侧是否发生链路故障或者设备 故障；
当主用 OLT侧发生链路故障或者设备故障时， 所述汇聚节点启用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连接的主用端口。 本发明实施例提供一种汇聚节点， 包括：
侦听单元， 用于侦听与其连接的主用 OLT和 BNG之间传递的信息； 故障决策单元， 用于根据所述侦听单元侦听的信息， 确定所述主用 OLT 侧是否发生链路故障或者设备故障；
端口切换单元， 用于在所述主用 OLT侧发生链路故障或者设备故障时， 启用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连接的主用端口。
本发明实施例提供一种光网络保护系统， 包括： 汇聚节点， 与所述汇聚节 点连接的 BNG, 以及与所述汇聚节点连接的至少一个主用 OLT和至少一个备 用 OLT;
汇聚节点侦听与其连接的至少一个主用 OLT和 BNG之间传递的信息；并 根据侦听的信息， 确定主用 OLT侧是否发生链路故障或者设备故障；
当主用 OLT侧发生链路故障或者设备故障时， 所述汇聚节点启用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连接的主用端口。
本发明实施例中，汇聚节点通过侦听主用 OLT和宽带网络网关 (Broadband Network Gateway, BNG)之间传递的信息，可以 ^居侦听的信息及时发现故障， 并在发生故障时， 并开启本地的保护方案， 启用相应的与所述主用 OLT对应 的备用 OLT连接的备份端口， 关闭与所述主用 OLT连接的主用端口。 实现了 在主用 OLT切换到备用 OLT时， 汇聚节点进行联动切换， 保证了通信的正常 进行。 附图说明 图 1是本发明实施例一汇聚节点联动切换方法的流程图；
图 2是本发明实施例二汇聚节点联动切换方法的流程图；
图 3 ( a )是本发明实施例本发明实施例方法应用的 1+1模式的组网示意图； 图 3 ( b )是本发明实施例本发明实施例方法应用的 N+1模式的组网示意图； 图 4是实施例一应用例的流程图；
图 5是实施例二应用例的流程图；
图 6是实施例三汇聚节点的结构示意图；
图 7是实施例四光网络保护系统的结构示意图。 具体实施方式 本发明实施例提供汇聚节点联动切换方法及汇聚节点和系统，汇聚节点侦 听与其连接的主用光线路终端 OLT和宽带网络网关 BNG之间传递的信息；并 根据侦听的信息确定主用 OLT侧是否发生链路故障或者设备故障；当主用 OLT 侧发生链路故障或者设备故障时， 所述汇聚节点启用与备用 OLT连接的备份 端口， 关闭与所述主用 OLT连接的主用端口。 以下分别进行伴细说明。 实施例一、 一种汇聚节点联动切换方法， 流程图如图 1所示， 包括： A1 , 汇聚节点侦听与其连接的主用 OLT和 BNG之间传递的信息； 本发明实施例中，汇聚节点侦听与其连接的主用 OLT和 BNG之间传递的 多种信息， 下面举例说明：
汇聚节点侦听主用 OLT周期性通过接入节点控制协议 ( Access Node Control Protocol, ANCP )/操作维护管理 ( Operation Administration Maintenance , OAM ) 消息上报给 BNG的 PON端口状态信息； 或者， 汇聚节点侦听 0NU 周期性通过 ANCP消息或 0AM消息上报给 BNG的数字用户线（Digital Subscriber Line。 DSL )端口状态信息， ANCP消息或 0AM消息， 该 DSL端 口状态信息表明所述 0NU和所述主用 0LT之间的主干光纤正常； 或者， 汇聚 节点侦听主用 0LT与 BNG之间周期性传递的连通性检测消息； 或者， 汇聚节 点侦听主备 0LT之间周期性传递的连通性检测消息，具体的连通性检测消息可 以是： 0AM消息或双向侦测十办议（Bidirectional Forwarding Detection ， BFD ) 消息。 A2, 根据侦听的信息确定主用 OLT侧是否发生链路故障或者设备故障； 若是， 则继续步骤 A3， 若否， 则不做端口切换。
本发明实施例中， 针对步骤 A1中监听信息， 可以通过多种方式获知到主 用 OLT侧是否发生的链路故障或者设备故障。
例如： 当汇聚节点在一定时间内未收到由主用 OLT或 ONU发出的 ANCP 消息或 OAM消息或连通性检测消息， 则判定主用 OLT或主用 OLT与汇聚节 点之间的链路故障。
或者， 当汇聚节点收到 ANCP消息 / OAM消息表明相应 PON端口故障， 则判定该 PON端口对应的主用光纤链路或该 PON端口故障。
A3, 汇聚节点启用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连 接的主用端口。 具体的， 所述汇聚节点根据连接所述主用 OLT的主用端口的 标识查找本地的端口备份列表获取所述主用端口的标识对应的备份端口的标 识； 据所述备份端口的标识开启备份端口，才 据所述主用端口的标识关闭主 用端口。
本发明实施例一中，汇聚节点通过侦听主用 OLT和 BNG之间传递的信息， 可以根据侦听的信息及时发现故障，并在发生故障时，并开启本地的保护方案， 启用相应的与所述主用 OLT对应的备用 OLT连接的备份端口， 关闭与所述主 用 OLT连接的主用端口。 实现了在主用 OLT切换到备用 OLT时， 汇聚节点进 行联动切换， 保证了通信的正常进行。 实施例二、 一种汇聚节点联动切换方法， 流程图如图 2所示， 包括：
B1， 当汇聚节点侦听到 BNG向备用 OLT发送的接替主用 OLT的主备切 换的消息， 则判定主用 OLT故障或主用 OLT与汇聚节点之间的链路故障； 本发明实施例中， 主备切换消息可以采用现有的多种消息实现，例如可以 是： ANCP消息或者 OAM消息。
B2, 汇聚节点启用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连 接的主用端口，具体的所述汇聚节点根据所述主备切换消息中的主用端口的标 识查找本地的端口备份列表获取所述主用端口的标识对应的备份端口的标识； 根据所述备份端口的标识开启备份端口， 据所述故障端口的标识关闭主用端 口。 可以理解， 所述步骤 B2之后， 还可以包括： 将所述主备切换消息向备用 OLT转发，以启动备用 OLT接替主用 OLT的切换。
图 3为本发明实施例方法应用的组网系统示意图， 图 3 ( a )为 1+1模式 的组网示意图， 图 3 ( b )为 N+1模式的组网示意图。
图 3 ( a ) 中包含多个 ONU通过多个光分路器或 EB连接到主用 OLT ( OLTm ), 再连接到汇聚节点， 每个光分路器或 EB通过一个增强 EB与备用 OLT ( OLTn+1 )连接， 再连接到汇聚节点， 汇聚节点与 BNG相连， 最终形成 从 BNG到 ONU的传输通路。
其中汇聚节点的端口可以是物理端口， 也可以是逻辑端口， 例如： 虚拟局 域网（ Virtual Local Area Network, VLAN )端口。汇聚端口与 OLT有对应关系， 汇聚端口与 OLT的 PON端口也有对应关系。
图 3 ( b )中包含 n个 ONU ( ONU1 ONUn )，N个 ONU通过光分路器
( EB )连接到 n个主用 OLT ( OLTm )和 1个备用 OLT ( OLTn+1 )， n个 OLTm 和 OLTn+1通过汇聚节点与 BNG相连。
基于上述图 3中本发明应用的组网系统，的下面提供本发明实施例一和实 施例二应用于实际通信场景的应用例，
实施例一的应用例一， 流程图如图 4所示， 包括：
若备份 OLT 能通过监测上行光信号来判断是否启动主备 OLT之间的切 换， 则设备级 PON联动保护流程， 如图 3所示。
C1， 在主用 OLTm正常工作时，主用 OLTm会周期性通过 ANCP消息或 OAM消息上报 PON端口状态信息给 BNG, 或者， ONU会周期性通过 ANCP 消息或 OAM消息上报 ONU的 DSL端口状态信息给 BNG, 表明主用 OLTm/ 第 m路主干光纤正常； 或者， 主用 OLTm与 BNG之间周期性地之间传递连通 性检测消息（如 OAM消息或 BFD消息）； 或者， 主备 OLT之间周期性传递 连通性检测消息（如： OAM消息或 BFD消息）。在实际应用中，为了保证 50ms 内的快速切换， 周期可设定为 10ms。
C2, 汇聚节点主用端口工作， 收发来自或去主用 OLT的数据报文；
C3, 当主用 OLTm故障或主用 OLTm与汇聚节点之间的链路故障， 主用 OLTm将无法通过 ANCP消息或 OAM消息上报任何 PON端口的状态信息， 或者 ONU将无法通过 ANCP消息或 OAM消息上报任何 DSL端口的状态信息， 或主用 OLTm无法发送连通性检测消息； 当主用光纤链路或 PON端口故障， 主用 OLTm将根据 PON链路的 LOS ( Loss of Signal,信号丢失） /LOF ( Loss of Frame, 帧丢失）告警， 通过 ANCP 消息或 OAM消息上 相应 PON端口状态信息以表明相应 PON端口故障；或 者相应 PON端口的所有 ONU都无法通过 ANCP消息上报其上的任何 DSL端 口的状态信息； 或者主用 OLTm无法发送与 PON端口相对应的连通性检测消
C4, 汇聚节点做 ANCP/BFD/OAM消息的侦听（Snooping )，当汇聚节点 发现无法收到应该由主用 OLTm/ONU发出的 ANCP消息或连通性检测消息， 则判定主用 OLTm或主用 OLTm与汇聚节点之间的链路故障；
当汇聚节点发现无法收到应该由主用 OLTm发出的与某个 PON端口相对 应的 ANCP消息或 OAM消息或连通性检测消息，或者当汇聚节点收到与某个 PON端口相对应的 ANCP消息或 OAM消息表明相应 PON端口故障， 则判定 主用光纤链路或 PON端口故障；
C5, 汇聚节点 ^居 PON的故障类型和故障端口，关闭汇聚节点的原主用 端口， 启用汇聚节点相应的备份端口 （或保护端口）； 故障的类型可以是主用 OLTm故障，或主用 OLTm与汇聚节点之间的链路故障或主用 OLTm某个 PON 端口对应的主用光纤链路故障； 例如， 根据 ANCP消息或 OAM消息中故障 VLAN端口查找备份 VLAN端口， 下行介质访问控制 （ Media Access Control， MAC ) 帧将根据 VLAN向备份端口进行转发； 可以是启用同一个汇聚节点或 另一个汇聚节点的相应备份端口；
C6, 备份 OLT能通过监测上行光信号感知主用光链路故障；
C7, 当主用 OLTm故障或主用 OLTm与汇聚节点之间的链路故障，备份 OLT接管主用 OLTm下属的所有 ONU; 当主用光纤链路或 PON端口故障， 备份 OLT接管主用 OLTm故障端口下的 ONU;
C8, 汇聚节点备用端口工作， 收发来自或去备用 OLT的数据报文。
下面提供本发明实施例二、 实施例二中采用由 BNG直接下发主备切换消 息， 汇聚节点侦听主备切换消息， 则启动端口切换。
实施例二的应用例， 流程图如图 5所示， 包括：
D1— D3、 同图 2步骤 C1— C3; D4. 当 BNG发现无法收到应该由主用 OLTm/ONU发出的 ANCP消息或 OAM消息或连通性检测消息， 则判定主用 OLTm或主用 OLTm与 BNG之间 的链路故障；
当 BNG发现无法收到应该由主用 OLTm发出的与某个 PON端口相对应 的 ANCP消息或连通性检测消息， 或者当 BNG收到与某个 PON端口相对应 的 ANCP消息或 OAM消息表明相应 PON端口故障， 则判定主用光纤链路或 PON端口故障；
D5. BNG通过下发切换命令 (如 ANCP消息）启动 OLT的主备倒换或 PON端口的主 ^到换；
D6. 汇聚节点做 ANCP消息的侦听（ Snooping )， 关闭汇聚节点的原主用 端口，汇聚节点启用相应的备份端口 （或保护端口）； 例如 ^居 ANCP消息或 OAM消息中故障端口的 VLAN标识（ VLAN ID, VID )查找备份端口的 VID, 对于下行 MAC帧将根据备份端口的 VID进行转发；
D7. 汇聚节点做 ANCP消息中转；
D8. 备份 OLT接收切换命令， 当主用 OLTm故障或主用 OLTm与 BNG 之间的链路故障， 备份 OLT接管主用 OLTm下属的所有 ONU; 当主用光纤链 路或 PON端口故障，备份 OLT开启相应的保护端口，接管主用 OLTm故障端 口下的 ONU;
D9. 同图 4步骤 C8。 本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步 骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读 存储介质中， 存储介质可以包括： ROM、 RAM, 磁盘或光盘等。
下面提供本发明实施例中基于上述方法的装置实施例。
实施例三、 一种汇聚节点， 结构示意图如图 6所示， 包括：
侦听单元 610， 用于侦听与其连接的主用 OLT和 BNG之间传递的信息； 故障决策单元 620， 用于根据所述侦听单元侦听的信息， 确定到主用 OLT 侧是否发生的链路故障或者设备故障；
端口切换单元 630， 用于所述主用 OLT侧发生的链路故障或者设备故障 时， 启用与备用 OLT连接的备份端口， 关闭与主用 OLT连接的主用端口。 本发明实施例中， 所述侦听单元可以具体用于： 侦听主用 OLT周期性通 过 ANCP消息或 OAM消息上 ^艮给 BNG的 PON端口状态信息； 或者， 侦听 ONU周期性通过 ANCP消息或 OAM消息上 ^艮给 BNG的 DSL端口状态信息， 该 DSL端口状态信息表明所述 ONU和所述主用 OLT之间的主干光纤正常； 或者， 汇侦听主用 OLT与 BNG之间周期性传递的连通性检测消息； 或者， 侦 听主备 OLT之间周期性传递的连通性检测消息。
所述故障决策单元 620可以具体用于：
当侦听单元一定时间内未收到由主用 OLTm或 ONU发出的 ANCP消息或 或 OAM消息或连通性检测消息，则判定主用 OLTm或主用 OLTm与汇聚节点 之间的链路故障。
当侦听单元侦听到包含 PON端口故障信息的 ANCP消息或 OAM消息， 障。 '
当侦听单元侦听到 BNG向备用 OLT发送的接替主用 OLT的主备切换的 消息， 则判定主用 OLT故障或主用 OLT与汇聚节点之间的链路故障。
本发明实施例提供的汇聚节点通过侦听主用 OLT和 BNG之间传递的信 息， 可以根据侦听的信息及时发现故障， 并在发生故障时， 并开启本地的保护 方案， 启用相应的与所述主用 OLT对应的备用 OLT连接的备份端口， 关闭与 所述主用 OLT连接的主用端口。 实现了在主用 OLT切换到备用 OLT时， 汇聚 节点进行联动切换， 保证了通信的正常进行。
实施例四、 一种光网络保护系统， 结构示意图如图 7所示， 包括： 汇聚节 点 710、 与汇聚节点连接的宽带网络网关（BNG ) 720以及与汇聚节点连接的 至少一个主用光线路终端 （OLT ) 731和至少一个备用 OLT732;
汇聚节点 710侦听与其连接的至少一个主用 OLT731和 BNG720之间传递 的信息； 并根据侦听的信息， 确定主用 OLT731侧是否发生链路故障或者设备 故障；
当获知主用 OLT731侧是否发生的链路故障或者设备故障时，则汇聚节点 启用与 OLT732连接的备份端口， 关闭与主用 OLT731连接的主用端口。 本发明实施例三汇聚节点和实施例四光网络保护系统可以运行的方法参 见上述方法实施例的描述。
以上对本发明实施例所提供的汇聚节点联动切换方法及汇聚节点和系统 述， 以上实施例的说明只是用于帮助理解本发明的方法及其核心思想； 同时， 对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围 上均会有改变之处， 综上所述， 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种汇聚节点联动切换方法， 其特征在于， 包括：
汇聚节点侦听与其连接的主用光线路终端 OLT和宽带网络网关 BNG之间 传递的信息； 并根据侦听的信息确定主用 OLT侧是否发生链路故障或者设备 故障；
当主用 OLT侧发生链路故障或者设备故障时， 所述汇聚节点启用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连接的主用端口。
2、 如权利要求 1所述的方法， 其特征在于， 所述汇聚节点侦听与其连接 的主用 OLT和 BNG之间传递的信息包括：
汇聚节点侦听主用 OLT周期性通过接入节点控制协议 ANCP消息 /操作维 护管理 OAM消息上 ^艮给 BNG的 PON端口状态信息；
或者， 汇聚节点侦听 ONU周期性通过 ANCP消息或 OAM消息上报给 BNG的数字用户线 DSL端口状态信息， 该 DSL端口状态信息表明所述 ONU 和所述主用 OLT之间的主干光纤正常；
或者，汇聚节点侦听主用 OLT与 BNG之间周期性传递的连通性检测消息； 或者， 汇聚节点侦听主备 OLT之间周期性传递的连通性检测消息。
3、 如权利要求 1所述的方法， 其特征在于， 所述根据侦听的信息确定主 用 OLT侧是否发生链路故障或者设备故障包括：
当汇聚节点在一定时间内未收到由主用 OLT或 ONU发出的 ANCP消息 或 OAM消息或连通性检测消息， 则判定主用 OLT故障或主用 OLT与汇聚节 点之间的链路故障。
4、 如权利要求 1所述的方法， 其特征在于， 所述根据侦听的信息确定主 用 OLT侧是否发生链路故障或者设备故障包括：
侦听包含 PON端口故障信息的 ANCP消息或 OAM消息， 根据所述故障 信息判定该 PON端口对应的主用光纤链路故障或该 PON端口故障。
5、 如权利要求 1至 4任一项所述的方法， 其特征在于， 所述汇聚节点启 用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连接的主用端口包括： 所述汇聚节点根据连接所述主用 OLT的主用端口的标识查找本地的端口备份 列表，获取所述主用端口的标识对应的备份端口的标识；根据所述备份端口的 标识开启备份端口， ^居所述主用端口的标识关闭主用端口。
6、 如权利要求 1所述的方法， 其特征在于， 所述根据侦听的信息确定主 用 OLT侧是否发生链路故障或者设备故障包括：
当汇聚节点侦听到 BNG向备用 OLT发送的接替主用 OLT的主备切换消 息， 则判定所述主用 OLT故障或主用 OLT与汇聚节点之间的链路故障。
7、如权利要求 6所述的方法，其特征在于，所述汇聚节点启用与备用 OLT 连接的备份端口之后包括： 将所述主备切换消息向所述备用 OLT转发。
8、 如权利要求 6或 7任一项所述的方法， 其特征在于， 所述汇聚节点启 用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连接的主用端口的过程 包括：
所述汇聚节点 ^居所述主备切换消息中的主用端口的标识查找本地的端 口备份列表，获取所述主用端口的标识对应的备份端口的标识；根据所述备份 端口的标识开启备份端口， 据所述故障端口的标识关闭主用端口。
9、 一种汇聚节点， 其特征在于， 包括：
侦听单元， 用于侦听与其连接的主用 OLT和 BNG之间传递的信息； 故障决策单元， 用于根据所述侦听单元侦听的信息， 确定所述主用 OLT 侧是否发生链路故障或者设备故障；
端口切换单元， 用于在所述主用 OLT侧发生链路故障或者设备故障时， 启用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连接的主用端口。
10、如权利要求 9所述的汇聚节点，其特征在于，所述侦听单元具体用于： 侦听主用 OLT周期性通过 ANCP消息或 OAM消息上 ^艮给 BNG的 PON端口 状态信息； 或者，侦听 ONU周期性通过 ANCP消息或 OAM消息上报给 BNG 的 DSL端口状态信息， 该 DSL端口状态信息表明所述 ONU和所述主用 OLT 之间的主干光纤正常； 或者， 侦听主备 OLT之间周期性传递的连通性检测消
11、 如权利要求 10所述的汇聚节点， 其特征在于， 所述故障决策单元具 体用于：
当侦听单元一定时间内未收到由主用 OLT或 ONU发出的 ANCP消息或 OAM消息或连通性检测消息， 则判定主用 OLT故障或主用 OLT与汇聚节点 之间的链路故障；
或者， 当侦听单元侦听到包含 PON端口故障信息的 ANCP消息或 OAM 消息， 则根据所述故障信息判定该 PON端口对应的主用光纤链路故障或该 PON端口故障；
或者， 当侦听单元侦听到 BNG向备用 OLT发送的表明接替主用 OLT的 主备切换消息，则判定主用 OLT故障或主用 OLT与汇聚节点之间的链路故障。
12、 一种光网络保护系统， 其特征在于， 包括： 汇聚节点， 与所述汇聚节 点连接的 BNG, 以及与所述汇聚节点连接的至少一个主用 OLT和至少一个备 用 OLT;
汇聚节点侦听与其连接的至少一个主用 OLT和 BNG之间传递的信息；并 根据侦听的信息， 确定主用 OLT侧是否发生链路故障或者设备故障；
当主用 OLT侧发生链路故障或者设备故障时， 所述汇聚节点启用与备用 OLT连接的备份端口， 关闭与所述主用 OLT连接的主用端口。
PCT/CN2010/071335 2009-08-27 2010-03-26 汇聚节点联动切换方法及汇聚节点和系统 WO2011022966A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10811132A EP2451119A4 (en) 2009-08-27 2010-03-26 SIMULTANEOUS SWITCHING METHOD FOR AGGREGATION N UD, AGGREGATION N UD AND SYSTEM THEREOF
US13/365,744 US8755685B2 (en) 2009-08-27 2012-02-03 Joint switching method for an aggregation node, aggregation node and system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910171252.X 2009-08-27
CN200910171252XA CN101998191A (zh) 2009-08-27 2009-08-27 汇聚节点联动切换方法及汇聚节点和系统

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/365,744 Continuation US8755685B2 (en) 2009-08-27 2012-02-03 Joint switching method for an aggregation node, aggregation node and system

Publications (1)

Publication Number Publication Date
WO2011022966A1 true WO2011022966A1 (zh) 2011-03-03

Family

ID=43627197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/071335 WO2011022966A1 (zh) 2009-08-27 2010-03-26 汇聚节点联动切换方法及汇聚节点和系统

Country Status (4)

Country Link
US (1) US8755685B2 (zh)
EP (1) EP2451119A4 (zh)
CN (1) CN101998191A (zh)
WO (1) WO2011022966A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2720407A1 (en) * 2011-06-08 2014-04-16 Huawei Technologies Co., Ltd Fault processing method, aggregation node and optical network protection system
EP2730096B1 (en) * 2011-07-07 2018-04-18 Alcatel Lucent Apparatus and method for protection in a data center

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102868943B (zh) * 2011-07-04 2015-11-25 华为技术有限公司 一种获取pon端口关联关系的方法、光网络装置和系统
KR101516135B1 (ko) * 2011-10-19 2015-04-29 니폰 덴신 덴와 가부시끼가이샤 광 네트워크 시스템
CN103178971B (zh) * 2011-12-20 2015-12-16 华为技术有限公司 Pon保护方法及装置
CN102780635B (zh) * 2012-08-09 2015-09-09 华为技术有限公司 基于trill网络实现保护倒换的方法、tor交换机及系统
CN102833003B (zh) * 2012-09-04 2015-05-20 中国联合网络通信集团有限公司 光网络的组网方法与装置
EP2916486A4 (en) * 2012-12-20 2015-12-16 Huawei Tech Co Ltd DENSITY PROCESS, OPTICAL LINE EQUIPMENT AND SYSTEM IN A PASSIVE OPTICAL NETWORK
EP2775733A1 (en) * 2013-03-05 2014-09-10 British Telecommunications public limited company Communications network
JP6049543B2 (ja) * 2013-06-04 2016-12-21 三菱電機株式会社 光通信システム、親局装置、子局装置、切替制御装置、制御装置、管理情報取得方法および回線切替方法
CN105637808B (zh) * 2013-09-09 2018-12-14 英国电讯有限公司 操作接入网络的方法、接入网络控制中继组件、接入网络和承载介质
EP2854335A1 (en) 2013-09-30 2015-04-01 British Telecommunications public limited company Data network management
RU2633527C1 (ru) * 2014-03-05 2017-10-13 Хуавэй Текнолоджиз Ко., Лтд. Способ, устройство и система переключения линии связи
CN105379201B (zh) * 2014-05-09 2018-11-06 华为技术有限公司 路径切换的方法、控制器和故障切换交换机
WO2016106599A1 (zh) 2014-12-30 2016-07-07 华为技术有限公司 一种应用于多波长无源光网络的通信方法、装置及系统
US20160234582A1 (en) * 2015-02-10 2016-08-11 Daniel Ronald Method and system for redundancy in a passive optical network
US10148348B2 (en) * 2015-07-17 2018-12-04 Corning Optical Communications LLC Optical-electrical interface devices and systems with optical communication pathway redundancy
CN107306231B (zh) * 2016-04-20 2021-06-08 中国移动通信集团广东有限公司 业务调度方法、设备及系统
AU2017260108B2 (en) * 2016-05-04 2021-08-26 Adtran, Inc. Systems and methods for performing optical line terminal (OLT) failover switches in optical networks
CN107659420A (zh) * 2016-07-25 2018-02-02 中兴通讯股份有限公司 无源光网络手拉手保护系统切换方法和装置
IT201600096594A1 (it) * 2016-09-27 2018-03-27 Scuola Superiore Di Studi Univ E Di Perfezionamento Santanna Metodo di gestione di una rete di telecomunicazioni
US10680843B2 (en) 2016-12-21 2020-06-09 British Telecommunications Public Limited Company Network node
CN113037540A (zh) * 2017-08-09 2021-06-25 华为技术有限公司 一种通信方法、设备及存储介质
CN107517477B (zh) * 2017-08-29 2021-01-26 深圳市盛路物联通讯技术有限公司 一种无线接入点随机备份的方法及网关
CN109104647B (zh) * 2018-06-14 2021-06-15 烽火通信科技股份有限公司 一种以太网业务中断处理方法、系统及组网系统
CN113542932B (zh) * 2020-04-15 2023-03-21 中国联合网络通信集团有限公司 网络的主备切换方法、系统、设备和存储介质
JP7420761B2 (ja) * 2021-04-02 2024-01-23 ソフトバンク株式会社 監視装置、監視方法、プログラム及び監視システム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1838548A (zh) * 2005-03-24 2006-09-27 上海贝尔阿尔卡特股份有限公司 一种无源光网络备份保护装置
CN1866804A (zh) * 2005-10-19 2006-11-22 华为技术有限公司 对无源光网络的主干光纤进行故障保护倒换的方法
CN1925371A (zh) * 2006-09-20 2007-03-07 杭州华为三康技术有限公司 Epon系统的主干光纤保护倒换装置与方法
US20070268818A1 (en) * 2006-05-17 2007-11-22 Nec Corporation Station side transmission unit, operation control method for station side transmission unit, and optical network using station side transmission unit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3350926B2 (ja) * 1999-03-30 2002-11-25 日本電気株式会社 Ｐｏｎのプロテクション切り換え方法および装置
US6771908B2 (en) * 2001-02-12 2004-08-03 Lucent Technologies Inc. Fast protection switching by snooping on downstream signals in an optical network
US6778781B2 (en) * 2001-02-12 2004-08-17 Lucent Technologies Inc. Health check algorithm for protection circuit in optical network
JP4696759B2 (ja) * 2005-07-29 2011-06-08 Ｋｄｄｉ株式会社 光終端システム
GB0720094D0 (en) * 2007-10-15 2007-11-21 British Telecomm Optical network
CN101466054B (zh) 2007-12-17 2011-08-24 华为技术有限公司 网络配置方法及设备
EP2086136A1 (en) * 2008-01-29 2009-08-05 British Telecommunications Public Limited Company Optical communication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1838548A (zh) * 2005-03-24 2006-09-27 上海贝尔阿尔卡特股份有限公司 一种无源光网络备份保护装置
CN1866804A (zh) * 2005-10-19 2006-11-22 华为技术有限公司 对无源光网络的主干光纤进行故障保护倒换的方法
US20070268818A1 (en) * 2006-05-17 2007-11-22 Nec Corporation Station side transmission unit, operation control method for station side transmission unit, and optical network using station side transmission unit
CN1925371A (zh) * 2006-09-20 2007-03-07 杭州华为三康技术有限公司 Epon系统的主干光纤保护倒换装置与方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2451119A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2720407A1 (en) * 2011-06-08 2014-04-16 Huawei Technologies Co., Ltd Fault processing method, aggregation node and optical network protection system
EP2720407A4 (en) * 2011-06-08 2014-04-23 Huawei Tech Co Ltd ERROR PROCESSING, AGGREGATION NODES, AND PROTECTION SYSTEM FOR OPTICAL NETWORK
US9130669B2 (en) 2011-06-08 2015-09-08 Huawei Technologies Co., Ltd. Troubleshooting method, aggregation node, and optical network protection system
EP2730096B1 (en) * 2011-07-07 2018-04-18 Alcatel Lucent Apparatus and method for protection in a data center

Also Published As

Publication number Publication date
US8755685B2 (en) 2014-06-17
EP2451119A4 (en) 2012-06-06
US20120134664A1 (en) 2012-05-31
CN101998191A (zh) 2011-03-30
EP2451119A1 (en) 2012-05-09

Similar Documents

Publication Publication Date Title
WO2011022966A1 (zh) 汇聚节点联动切换方法及汇聚节点和系统
US9130669B2 (en) Troubleshooting method, aggregation node, and optical network protection system
CN101888268B (zh) 一种在以太无源光网络实现主干光纤保护的方法和装置
EP2787684B1 (en) Method and device for protecting passive optical network (pon)
CN102917286B (zh) 一种epon接入系统中的手拉手保护倒换方法和系统
CN101854566B (zh) 无源光网络保护方法、主备切换控制设备和系统
EP1835641B1 (en) Passive optical network system and method for protecting the services of the same
TWI430594B (zh) 用於乙太網路被動光學網路中之保護切換的方法及系統
WO2012119439A1 (zh) 光网络系统的数据通信方法、光网络单元及系统
JP4913865B2 (ja) 光通信ネットワークシステム、親局光通信装置、光通信方法および通信プログラム
US20090103918A1 (en) Communication System Using Passive Optical Network and Passive Optical Network
WO2015131360A1 (zh) 一种链路切换方法、设备和系统
WO2012068894A1 (zh) 一种实现光线路终端异地容灾的系统和方法
WO2011038591A1 (zh) 一种无源光网络的主备切换方法、装置和系统
CN102611519B (zh) 一种对无源光网络进行链路保护的方法和装置
WO2010118619A1 (zh) 一种提高type b保护倒换性能的方法、设备及系统
WO2014094268A1 (zh) 一种无源光网络中的业务保护方法、光线路终端及系统
WO2010031326A1 (zh) 光网络系统数据链路切换方法、光线路终端及系统
WO2011020361A1 (zh) 一种光接入节点的管理方法及光接入节点
CN102340392B (zh) 一种提高无源光网络系统中业务可靠性的方法和系统
JP4931997B2 (ja) 光アクセスネットワーク
CN101917225B (zh) 一种gpon系统中盘间stm-1接口自动保护倒换的实现方法
WO2010133065A1 (zh) 基于无源光网络的保护系统和方法
WO2012136089A1 (zh) 一种无源光网络环路检测方法及系统
CN102006525B (zh) 光通信控制装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10811132

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2010811132

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2010811132

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE