WO2016091094A1 - Procédé et dispositif de commutation de protection de réseau de transport optique - Google Patents

Procédé et dispositif de commutation de protection de réseau de transport optique Download PDF

Info

Publication number
WO2016091094A1
WO2016091094A1 PCT/CN2015/096000 CN2015096000W WO2016091094A1 WO 2016091094 A1 WO2016091094 A1 WO 2016091094A1 CN 2015096000 W CN2015096000 W CN 2015096000W WO 2016091094 A1 WO2016091094 A1 WO 2016091094A1
Authority
WO
WIPO (PCT)
Prior art keywords
protection
line
side board
working line
switching
Prior art date
Application number
PCT/CN2015/096000
Other languages
English (en)
Chinese (zh)
Inventor
吴海红
陶元
李祥信
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2016091094A1 publication Critical patent/WO2016091094A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
    • 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

Definitions

  • This application relates to, but is not limited to, the field of information transmission in optical transmission networks.
  • the traditional OTN Optical Transport Network
  • the traditional OTN is based on circuit switching technology to transmit data.
  • the OTN architecture of the related art is shown in FIG. 1.
  • each client-side board sends service data to the cross-board, and the cross-board determines the transmission line.
  • the cross-board distributes the service data to the line-side board of the determined transmission path, and then transmits the line-side board to the peer.
  • the cross-board is used to monitor whether the working line (ie, the primary transmission line) is faulty, and after the fault is determined, the switching operation is performed based on the APS (Automatic Protection Switched) protocol, so that the protection line (ie, the alternate transmission line) ) Replace the work line.
  • APS Automatic Protection Switched
  • Packet switching technology also called packet switching technology, divides service data into a certain length. Each part is called a packet. Each packet data is transmitted by transmitting packets, and the packet data is reassembled into OTN service data at the opposite end. .
  • the cross-board is centralized and responsible for execution, so it takes up a lot of capacity, so it needs to be re-developed. OTN protection switching scheme.
  • the present invention provides a protection switching method and device for an optical transport network, which can replace the performing protection switching of the cross-board by the client-side board.
  • Embodiments of the present invention provide a protection switching method for an optical transport network, including:
  • the first client-side board of the optical transport network obtains the detection information of the working line from the working line side board, and the detection information of the working line is obtained by detecting the working line by the working line side board;
  • the first customer side board performs a protection switching policy, and the service data is switched from the working line to the protection line.
  • the first client-side board performs a protection switching policy, and the service data is switched from the working line to the protection line, including:
  • the first client-side board sends a traffic close command to the working line side board, so that the working line side board closes the flow switch of the working line;
  • the first client-side board sends a traffic-opening command and a switching command to the protected-line-side board, so that the protection-line-side board starts the traffic switch of the protection line, and completes the service data according to the switching command. Protection switching action.
  • the first client side board obtains detection information of the protection line from the protection line side board, and the detection information of the protection line is obtained by detecting the protection line by the protection line side board;
  • the protection of the service data is performed when the detection information of the working line indicates that the working line is faulty, and the detection information of the protection line indicates that the protection line is not faulty.
  • the method further includes:
  • the first client-side board After the protection switching of the service data is completed, the first client-side board sends a switching notification to the second client-side board of the optical transport network;
  • the second client side board obtains the detection information of the working line from the working line side board, and after determining that the working line is faulty according to the obtained detection information, starts timing, and if the timing reaches a preset threshold, If the switching notification from the first client-side board is not received, the switching protection of the service data is performed instead of the first client-side board.
  • an embodiment of the present invention further provides a protection switching device for an optical transmission network, including:
  • the first obtaining module is configured to: obtain detection information of the working line from the working line side board, and the detecting information of the working line is obtained by detecting the working line by the working line side board;
  • the protection switching module is configured to: if the detection information of the working line acquired by the first obtaining module indicates that the working line is faulty, perform a protection switching policy to switch service data from the working line to the protection line.
  • the protection switching module includes:
  • the first sending sub-module is configured to send a traffic close command to the working line side board, so that the working line side board closes the flow switch of the working line;
  • the second sending sub-module is configured to: send a traffic open command and a switch command to the protected line side board, so that the protection line side board starts the traffic switch of the protection line, and completes the service according to the switching command. Data protection switching action.
  • the device further comprises:
  • the second obtaining module is configured to: obtain the detection information of the protection line from the protection line side board, and the detection information of the protection line is obtained by detecting the protection line by the protection line side board;
  • the protection switching module is configured to perform protection switching of service data when the detection information of the working line indicates that the working line is faulty, and the detection information of the protection line indicates that the protection line has no fault.
  • the device further comprises:
  • the sending module is configured to send a switching notification to the second client-side board of the optical transport network after the switching protection module completes the protection switching of the service data.
  • an embodiment of the present invention further provides a client side board, including the protection switching device of the above optical transmission network.
  • a computer readable storage medium storing computer executable instructions for performing the method of any of the above.
  • the decision of the protection group of the service data is performed by the centralized execution of the original cross-board, and is distributed to each client-side board, and in the case of a large number of protection groups, the reduction is performed.
  • the protection switching processing time is shortened, and the capacity resources of the cross-board are released.
  • FIG. 1 is a schematic structural diagram of a related art OTN
  • FIG. 2 is a schematic diagram of steps of a protection switching method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for performing protection switching of a transmission line according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a protection switching device according to an embodiment of the present invention.
  • the protection switching mechanism of the OTN transmission line is implemented by the cross-boards.
  • the embodiment of the present invention provides a brand-new protection.
  • the protection switching method and device of the optical transport network replace the performing protection switching of the cross-board by the client-side board.
  • the protection switching method includes:
  • Step 11 The first client-side board of the optical transport network obtains the detection information of the working line from the working-line board, and the detection information of the working line is obtained by detecting the working line by the working-line board;
  • Step 12 If the obtained detection information of the working line indicates that the working line is faulty, the first client-side board performs a protection switching policy, and the service data is switched from the working line to the protection line.
  • the decision of the protection switching group can be distributed to each client side board, and in the case of a large number of protection groups, the protection switching processing time is shortened.
  • the traditional circuit-switching technology uses the dual-issue selection method to transmit service data.
  • the dual-issue selection means that the transmitting end sends the service data to the opposite end through the working line and the protection line, and the opposite end preferentially receives the working line.
  • the embodiment of the present invention implements the flow opening/closing function of the control working line and the protection line on the client side board. That is, the above step 12 includes:
  • Step 121 The first client-side board sends a traffic close command to the working line side board, so that the working line side board closes the flow switch of the working line;
  • Step 122 The first client-side board sends a traffic-opening command and a switching command to the protected-line-side board, so that the protection-line-side board starts the traffic switch of the protection line, and completes according to the switching command.
  • the protection switching action of the service data is not limited to the above-line-side board.
  • the flow of the protection line is in a normally closed state.
  • the board on the first customer side controls the traffic on the working line to close the working line, so that the capacity of the cross-board is no longer occupied.
  • the method further includes:
  • Step 13 The first client-side board obtains detection information of the protection line from the protection line side board, and the detection information of the protection line is obtained by detecting the protection line by the protection line side board;
  • the protection of the service data is performed when the detection information of the working line indicates that the working line is faulty, and the detection information of the protection line indicates that the protection line is not faulty.
  • the first client-side board simultaneously captures the status of the protection line and the working line.
  • the service data is switched to the protection line only when the protection line is normal.
  • a second client-side board can be added to form a protection group with the first client-side board to form a redundancy scheme, that is, if the first client-side board cannot perform protection switching of the working line,
  • the second client side board is responsible for execution.
  • the second client-side board obtains the detection information of the working line from the working-line board in the same manner as the first-client board, and determines whether the working line is faulty according to the detection information of the working line. .
  • the first client-side board sends a switching notification to the second client-side board of the optical transmission network; when the second client side is single After the board determines that the working line is faulty, it starts timing. If the timeout reaches the preset threshold, the board fails to receive the switching notification from the first client side board, and then determines that the first client side board is abnormal and performs redundancy.
  • the remaining protocol performs the switching protection of the service data instead of the first client side board.
  • Step 31 The working line side board of the working line in the OLT system performs fault detection on the working line in real time. Assume that the working line side board detects that the working line is faulty, and sends a fault alarm to the first client side board through its communication module. In the process, the working line side board can detect the status of the working line according to the APS (Automatic Protection Switched Automatic Protection Switching) protocol, and send an APS alarm message to the first client side board after detecting the fault;
  • APS Automatic Protection Switched Automatic Protection Switching
  • Step 32 After receiving the fault alarm, the communication module of the first client-side board selects the corresponding protection line through the APS protocol running therein, and sends a traffic shutdown command to the working line side board through the communication module.
  • Step 33 After receiving the flow switch command, the working line side single board board closes the corresponding flow switch.
  • Step 34 The first client-side service board receives the response success message from the communication module, and sends a traffic switch command and a switch command to the protection line side board of the protection line.
  • the switch command is an existing command, and can be used to control the information about the transmission service data (such as the configuration of the multicast mode).
  • Step 35 After receiving the open flow switch command through the communication module, the protection line side single disk opens the corresponding flow switch, and establishes a connection of the service data according to the protection command.
  • the NMS configuration specifies that the first client-side board is the master controller, and the other second-client board is the slave controller.
  • the master controller runs the APS protocol to monitor the working line-side board and the protection line-side board.
  • the traffic switch command and the switch command are sent, and the APS protocol is run from the controller, but the traffic switch command and the switch command are not sent.
  • the first client-side board receives the fault alarm sent by the first line-side board and transmits it to the fault alarm.
  • the second client side board if the first customer side board successfully performs the protection switching of the working line and the protection line, the second client side switches the notification to enable the first client side board and the second client side board to run.
  • the APS data is consistent.
  • the second client side board determines that the working line side board is faulty according to the APS protocol, if the switching notification of the first customer side board is not received within the preset time, the first customer side board is abnormal and automatically becomes
  • the main controller sends a traffic switch command and a switch command to the protection line side board.
  • the board on the first client side is restored to normal.
  • the status information is sent to the slave board from the second client side through the inter-board communication, so that the second client side board is restored to the slave controller.
  • another embodiment of the present invention further provides a protection switching device for an optical transport network, which is applied to a first client-side board of an optical transport network, and the optical transport network transmits service data based on a packet switching technology, as shown in FIG. 4 .
  • the device includes:
  • the first obtaining module 41 is configured to: obtain the detection information of the working line from the working line side board, and the detection information of the working line is obtained by detecting the working line by the working line side board;
  • the protection switching module 42 is configured to: if the detection information of the working line acquired by the first obtaining module 41 indicates that the working line is faulty, perform a protection switching policy to switch service data from the working line to the protection line.
  • the device in this embodiment is changed from the traditional cross-board centralized processing mechanism to the packet processing mechanism of each client-side board, so that the response of the protection switching is faster, and the response is faster.
  • the ground meets the time requirement of the optical transmission system for protection switching.
  • the protection switching module 42 includes:
  • the first sending sub-module is configured to send a traffic close command to the working line side board, so that the working line side board closes the flow switch of the working line;
  • the second sending sub-module is configured to: send a traffic open command and a switch command to the protected line side board, so that the protection line side board starts the traffic switch of the protection line, and completes the service according to the switching command. Data protection switching action.
  • the second obtaining module is configured to: obtain detection information of the protection line from the board on the protection line side, The detection information of the protection line is obtained by detecting the protection circuit by the protection board side board;
  • the protection switching module 42 is configured to perform protection switching of service data when the detection information of the working line indicates that the working line is faulty, and the detection information of the protection line indicates that the protection line has no fault.
  • the sending module is configured to: after the switching protection module 42 completes the protection switching of the service data, send a switching notification to the second client-side board of the optical transport network.
  • the second client side board obtains the detection information of the working line from the working line side board, and after determining that the working line is faulty according to the obtained detection information, starts timing, and if the timing reaches a preset threshold, If the switching notification from the first client-side board is not received, the switching protection of the service data is performed instead of the first client-side board.
  • the protection switching device of this embodiment corresponds to the protection switching method of the previous embodiment, and can achieve the same technical effect.
  • another embodiment of the present invention further provides a client side board, including the protection switching device of the optical transmission network described above.
  • the client-side board in this embodiment can perform the protection switching mechanism of the service data instead of the cross-board, thereby releasing the capacity occupation of the cross-board.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the decision of the protection group of the service data is performed by the centralized execution of the original cross-board, and is distributed to each client side, and the protection switching process is shortened when the number of protection groups is large. Time and release the capacity resources of the cross-board.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé et un dispositif de commutation de protection de réseau de transport optique. Le procédé comprend les étapes suivantes : une première monocarte côté client d'un réseau de transport optique acquiert des informations de détection sur une ligne de travail à partir d'une monocarte côté ligne de travail, les informations de détection de la ligne de travail étant obtenues en détectant la ligne de travail par l'intermédiaire de la monocarte côté ligne de travail ; et si les informations de détection acquises sur la ligne de travail indiquent l'occurrence d'une défaillance de la ligne de travail, la première monocarte côté client exécute une stratégie de commutation de protection et commute des données de service de la ligne de travail vers une ligne de protection.
PCT/CN2015/096000 2014-12-08 2015-11-30 Procédé et dispositif de commutation de protection de réseau de transport optique WO2016091094A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410741256.8 2014-12-08
CN201410741256.8A CN105743565A (zh) 2014-12-08 2014-12-08 一种光传送网的保护倒换方法及装置

Publications (1)

Publication Number Publication Date
WO2016091094A1 true WO2016091094A1 (fr) 2016-06-16

Family

ID=56106688

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/096000 WO2016091094A1 (fr) 2014-12-08 2015-11-30 Procédé et dispositif de commutation de protection de réseau de transport optique

Country Status (2)

Country Link
CN (1) CN105743565A (fr)
WO (1) WO2016091094A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112751607A (zh) * 2019-10-31 2021-05-04 中兴通讯股份有限公司 链路聚合端口的保护切换方法及系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108259082B (zh) * 2016-12-29 2021-02-12 中兴通讯股份有限公司 保护倒换的方法及控制业务板
CN110391841A (zh) * 2018-04-16 2019-10-29 中兴通讯股份有限公司 一种双归保护方法、装置及双归保护网络
CN113825042A (zh) * 2020-06-18 2021-12-21 深圳市中兴微电子技术有限公司 一种数据接入方法、装置、芯片和计算机存储介质
CN114584866A (zh) * 2020-11-18 2022-06-03 中兴通讯股份有限公司 业务保护方法、光传送网设备和存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1921326A (zh) * 2006-08-29 2007-02-28 华为技术有限公司 一种主备倒换的控制方法、装置及系统
CN101170320A (zh) * 2007-11-28 2008-04-30 中兴通讯股份有限公司 交叉主备倒换的方法
CN101909222A (zh) * 2009-06-03 2010-12-08 华为技术有限公司 光线路终端设备和保护方法以及无源光网络系统
JP2014093600A (ja) * 2012-11-01 2014-05-19 Mitsubishi Electric Corp 通信ノード装置の強制無瞬断切替システム

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101515833B (zh) * 2008-02-21 2012-05-23 中兴通讯股份有限公司 保护倒换的实现方法和装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1921326A (zh) * 2006-08-29 2007-02-28 华为技术有限公司 一种主备倒换的控制方法、装置及系统
CN101170320A (zh) * 2007-11-28 2008-04-30 中兴通讯股份有限公司 交叉主备倒换的方法
CN101909222A (zh) * 2009-06-03 2010-12-08 华为技术有限公司 光线路终端设备和保护方法以及无源光网络系统
JP2014093600A (ja) * 2012-11-01 2014-05-19 Mitsubishi Electric Corp 通信ノード装置の強制無瞬断切替システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112751607A (zh) * 2019-10-31 2021-05-04 中兴通讯股份有限公司 链路聚合端口的保护切换方法及系统

Also Published As

Publication number Publication date
CN105743565A (zh) 2016-07-06

Similar Documents

Publication Publication Date Title
WO2016091094A1 (fr) Procédé et dispositif de commutation de protection de réseau de transport optique
CN102299846B (zh) 一种bfd报文传输方法和设备
US10129617B2 (en) Link switching method, device, and system
CN104168193B (zh) 一种虚拟路由器冗余协议故障检测的方法及路由设备
CN102223258B (zh) 一种防止bfd会话中断的方法和设备
CN101695036B (zh) 一种irf链路的检测方法及装置
CN104980372A (zh) 中继系统以及交换机装置
CN101854283B (zh) 一种rpr环网的通信方法和设备
JP2009303087A (ja) ノード及び通信システム
WO2015131548A1 (fr) Procédé de protection de bfd et dispositif
US20140219080A1 (en) Method and apparatus for interworking protection switching
US20180167262A1 (en) Establishing a network fault detection session
JP2008306545A (ja) 無瞬断パケット切替装置
CN103220189B (zh) 一种mad检测备份方法和设备
WO2015154423A1 (fr) Procédé, appareil et système de traitement de services inter-domaines
WO2011137766A2 (fr) Procédé de détermination de l'état opérationnel d'un élément réseau, équipement pertinent et système associés
WO2015039456A1 (fr) Procédé et dispositif de commande d'auto-bouclage de données de réseau
WO2016082509A1 (fr) Procédé et appareil permettant de détecter une connectivité d'un trajet commuté par étiquette
US20200403907A1 (en) Faulty multi-layer link restoration method and controller
CN103414591A (zh) 一种端口故障恢复时的快速收敛方法和系统
CN102857423A (zh) 一种分布式链路聚合系统中业务流转发方法及节点
EP3355530B1 (fr) Procédé et appareil pour traiter une défaillance de service
CN104901880A (zh) 一种业务运行的方法及装置
Kim et al. Protection switching methods for point‐to‐multipoint connections in packet transport networks
CN102946321B (zh) 一种基于irf网络的故障处理方法和设备

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: 15867588

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15867588

Country of ref document: EP

Kind code of ref document: A1