WO2016058320A1 - 降低potn系统集中式保护倒换时间的方法、装置及系统 - Google Patents

降低potn系统集中式保护倒换时间的方法、装置及系统 Download PDF

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Publication number
WO2016058320A1
WO2016058320A1 PCT/CN2015/074120 CN2015074120W WO2016058320A1 WO 2016058320 A1 WO2016058320 A1 WO 2016058320A1 CN 2015074120 W CN2015074120 W CN 2015074120W WO 2016058320 A1 WO2016058320 A1 WO 2016058320A1
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Prior art keywords
protection switching
soft
decision
pseudowire
message
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PCT/CN2015/074120
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English (en)
French (fr)
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尹朝亮
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中兴通讯股份有限公司
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Priority to EP15850171.8A priority Critical patent/EP3208971B1/en
Priority to PCT/CN2015/074120 priority patent/WO2016058320A1/zh
Publication of WO2016058320A1 publication Critical patent/WO2016058320A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
    • 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
    • H04L45/24—Multipath
    • H04L45/243—Multipath using M+N parallel active paths
    • 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
    • H04L45/68—Pseudowire emulation, e.g. IETF WG PWE3

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  • the present invention relates to the field of communications, and more particularly to POTN (Packet-Optical Transport Network) fused in a multi-service, high-capacity PTN (Packet Transport Network) and OTN (Optical Transport Network).
  • POTN Packet-Optical Transport Network
  • PTN Packet Transport Network
  • OTN Optical Transport Network
  • Packet Optical Transport Network is a transport network for deep fusion packet transmission and optical transmission technology. It is based on a unified packet switching platform and can support both L2 switching (Ethernet/MPLS) and L1 switching (OTN/SDH), making POTN In different application and network deployment scenarios, functions can be flexibly cut and added. POTN mainly completes the GB/s to TB/s rate service transmission, and is widely distributed in communication access, metro and backbone transmission systems. The importance of POTN status is like that of the main line connecting the two places. In the event of a failure such as the destruction of the main line, a large number of services will be interrupted. In response to this situation, researchers in the industry have designed a reliable backbone service protection system to improve the survivability of the POTN transmission network and improve and improve the protection switching technology.
  • Protection switching technology is an indispensable key technology in PTN and OTN systems. With the convergence of the two in recent years, as the number of bandwidths, channels or slots increases, the number of protection groups increases, so it is fast, reliable and effective. The implementation of protection switching is particularly important. When the network is faulty, as the service and capacity increase, in order to improve the POTN network generation capability, it is necessary to provide a faster and more reasonable protection switching mechanism for the bearer services of the POTN network, so that the affected backbone services can be quickly scheduled. Transfer to a pre-allocated protection path to maximize recovery and protection of affected services.
  • the protection switching structure mainly has a distributed control mode and a centralized control mode, and a distributed control mode.
  • the advantage of the formula is the inefficiency problem, no backplane capacity limitation, but the disadvantage is that it is only applicable to the stable protection of the protocol. Once the development is completed, the later protocol cannot be easily adjusted. If the adjustment system involves large hardware changes; the centralized control mode The advantage is that the development cycle is short, the protocol adjustment is fast, and there are no obvious functional defects, but the disadvantage is that the efficiency load is defective, and the switching under multiple protection groups is easy to time out.
  • the embodiment of the invention provides a method, a device and a system for reducing the centralized protection switching time of a POTN system, so as to solve the problem of how to avoid the efficiency load and the technical problem of the switching timeout under the multi-protection group.
  • the embodiment of the present invention adopts the following technical solutions:
  • a method for reducing centralized protection switching time of a packet optical transport network POTN system comprising:
  • Parsing the soft pseudowire HW alarm packet determining at least one protection switching decision according to the analysis result of the alarm packet, and packaging the at least one protection switching decision into a soft pseudowire HW decision message and delivering the packet.
  • determining, according to the analysis result of the alarm packet, at least one protection switching decision including:
  • the protection switching process includes: a parallel processing mode.
  • the performing at least one protection switching process according to the alarm message parsing result and the pre-configured protection switching policy including: performing, according to the alarm packet parsing result and the pre-configured protection switching policy, in the programmable device FPGA At least one protection switching process.
  • a device for reducing centralized protection switching time of a packet optical transport network POTN system comprising:
  • the service alarm state detecting unit is configured to obtain the reported soft pseudowire fast communication channel HW. Alarm text
  • the soft pseudowire HW packet parsing unit is configured to parse the soft pseudowire HW alarm message
  • the protection switching algorithm implementation unit is configured to determine at least one protection switching decision according to the analysis result of the alarm packet
  • the soft pseudowire HW packet encapsulating unit is configured to encapsulate the at least one protection switching decision into a soft pseudowire HW decision message and deliver the packet.
  • the device for reducing the centralized protection switching time of the POTN system further includes:
  • the protection switching configuration unit is set to pre-configure the protection switching policy.
  • protection switching algorithm implementation unit is configured to perform at least one protection switching process according to the alarm message parsing result provided by the soft pseudowire HW packet parsing unit and the preconfigured protection switching policy provided by the protection switching configuration unit, and Based on this, at least one protection switching decision is determined.
  • the protection switching algorithm implementation unit performs the at least one protection switching process in a parallel processing mode.
  • the protection switching algorithm implementation unit includes: a programmable device FPGA.
  • a system for reducing the centralized protection switching time of a packet optical transport network POTN system comprising:
  • the service version and/or the cross-board are set to report the soft pseudo-line fast communication channel HW alarm message
  • the main control board is configured to obtain the soft pseudowire HW alarm message, and parse the soft pseudowire HW alarm message, determine at least one protection switching decision according to the alarm message parsing result, and switch the at least one protection switch The decision is encapsulated into a soft pseudowire HW decision message and sent.
  • the main control board is configured to send the soft pseudowire HW decision message to the hardware soft pseudowire HW high speed communication channel according to the sending polling policy by using the included programmable device FPGA;
  • the service version and/or the cross-board which is further configured to parse and process the soft pseudo-wire HW decision message, and perform corresponding protection switching work according to the result of the decision message parsing.
  • a computer storage medium having stored therein computer executable instructions for use in the methods described above.
  • the above technical solution encapsulates the alarm and protection switching commands by using the analog soft pseudowire HW technology, and formulates related packet formats, so that the protection channel can be switched quickly, reliably, and effectively during the protection switching process. Significantly reduces the time for centralized protection switching.
  • FIG. 1 is a schematic structural diagram of a system related to centralized protection switching
  • FIG. 2 is a schematic structural diagram of a system for centralized protection switching according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for reducing a centralized protection switching time of a POTN system according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of implementing protection switching of a main control board FPGA according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a format of a soft pseudowire HW alarm packet according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a format of a soft pseudowire HW decision message according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a fast protection switching implementation process in an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of an apparatus for reducing a centralized protection switching time of a POTN system according to an embodiment of the present disclosure
  • FIG. 9 is a schematic diagram of a system for reducing centralized protection switching time of a POTN system according to an embodiment of the present invention.
  • a method for reducing the centralized protection switching time of a POTN system includes the following steps:
  • S20 Parsing the soft pseudowire HW alarm packet, determining at least one protection switching decision according to the analysis result of the alarm packet, and packaging the at least one protection switching decision into a soft pseudowire HW decision message and delivering the packet.
  • the method provided in this embodiment uses the analog soft pseudowire HW technology to encapsulate the alarm information reported on the service version and/or the cross-board, and the protection switching command sent by the main control board, and the structure of the traditional centralized protection switching. Up, redefine the soft pseudowire HW message and formulate the relevant message grid formula.
  • the main control board is configured with the protection switching policy, and the main control board completes the protection switching algorithm after the service board detects and reports the alarm. Then, the protection switching command is sent to the service board, and finally the work is performed by the selector. Switching between channels illustrates an embodiment of the invention.
  • the structure diagram of the protection switching of the main control board FPGA is implemented.
  • the alarm uplink direction of FIG. 4 is known, and the service board alarm mainly includes: basic information, segment layer TMS, and channel layer TMP/ Circuit layer TMC, multi-protocol label switching layer MS, Ethernet ETH, and automatic protection switching APS alarms.
  • the service board encapsulates the above alarms according to the packet encapsulation format provided in Figure 5.
  • the format is similar to Ethernet packets.
  • the DA/SA and Vlan ID can be used to forward the data packets to the main control board for analysis.
  • the soft pseudowire HW message shown in FIG. 5 defines three formats, but is actually similar, and has the same 23-byte header.
  • the three formats are different according to different alarm types.
  • the payload portion is not the same.
  • the basic information is used to transmit the basic information of the service board, such as the slot number and board type, and can support up to 124 bytes of payload information.
  • the APS alarm information is used to transmit APS protection switching alarm information.
  • the maximum support is 288.
  • APS alarm information; and alarm information such as TMS, TMP/TMC, MS, and ETH are classified into one type, and can support up to 505 alarm information.
  • the step of determining the soft pseudowire HW alarm message and determining the at least one protection switching decision according to the alarm message parsing result includes:
  • S201 Cache and parse the soft pseudowire HW alarm packet.
  • the pre-configured protection switching policy performs at least one protection switching process according to the analysis result of the alarm packet and the pre-configured protection switching policy, and determines at least one protection switching decision according to the determination.
  • the main control board After receiving the soft PW HW alarm packets sent from the service board, the main control board caches the alarm information encapsulated and sent by each service board, and then performs the protection switching according to the protection switching mode configured on the main control board APS software. Segment protection MSP switching, multi-protocol label switching MPLS-fast reroute FRR The protection switching process, the label switching path LSP/pseudo-line PW linear protection switching processing, the virtual private network VPN protection switching processing, and the APS information receiving processing, etc., complete the protection switching algorithm, and prepare for the protection switching decision.
  • the protection switching process is set to a parallel processing mode. All protection switching algorithms can be performed simultaneously, reducing the computational time of protection switching, especially in the protection group's numerous POTN systems.
  • the centralized control mode is mainly composed of three parts: alarm monitoring, work/protection channel execution selection (Selector) and protection switching control (APST), and the accuracy of the switching time is also determined by these three parts. Decide.
  • the alarm monitoring (Monitor) is usually completed by the service board framer, and the alarm and protection information transmission channel is implemented by the Ethernet interface.
  • the protection switching control is mainly performed by the protection algorithm unit in the main control board APS software, and the related
  • the way to restrict the protection switching time is mainly reflected in the protection algorithm unit implementation scheme and the alarm and protection information transmission channel, and these two functions are operated at the software level, and do not directly pass the programmable device (FPGA). Wait for a fast hardware executor to implement.
  • the at least one protection switching process is performed in the programmable device FPGA according to the alarm message parsing result and the pre-configured protection switching policy.
  • the message transmission between the main control board and the service board and the cross board is encapsulated and transmitted by means of FPGA analog soft pseudowire (soft pseudowire HW), which enables the message to be exchanged in the fastest time, which is the closest to the underlying hardware.
  • FPGA analog soft pseudowire soft pseudowire HW
  • the protection switching algorithm is implemented on the main control board, and the HW packet format of the soft-pseudo-line is sent to the service board and the cross-connect board.
  • the format of the alarm packet is similar to that in the receiving direction. 23 headers are added with N payload bytes, and N is determined by different decision message types.
  • the issued decision message defines four formats, including basic information, APS decision information, MSP decision information, and other protection switching decision information (including MPLS FRR decision information, LSP/PW decision information, and VPN decision result). information).
  • each encapsulated packet will be scheduled and sent to the hardware soft pseudowire HW high-speed communication channel in the FPGA processing of the main control board, and finally forwarded through the Layer 3 switching chip.
  • the service board and the cross-board parse the protection switching command according to the corresponding format, thus completing the corresponding work and protection channel switching.
  • the embodiment of the present invention firstly parses the received soft PW HW alarm message encapsulated by the service board and/or the cross-board, and implements the protection switching algorithm directly in the programmable device FPGA, and the upper APS software only needs to complete the protection. Switched configuration. Then, according to the protection switching mode and the alarm type configured by the network management, at least one protection switching decision is determined, and then the at least one protection switching decision is encapsulated into a soft pseudowire HW decision message and sent to the service board and/or the cross board. Switching operation. With this method, the protection channel can be switched quickly, reliably, and effectively during the protection switching process, thereby significantly reducing the time of centralized protection switching.
  • the embodiment of the present invention further provides an apparatus for reducing a centralized protection switching time of a POTN system, including:
  • the service alarm state detecting unit is configured to obtain the reported soft pseudowire fast communication channel HW alarm message
  • the soft pseudowire HW packet parsing unit is configured to parse the soft pseudowire HW alarm message
  • the protection switching algorithm implementation unit is configured to determine at least one protection switching decision according to the analysis result of the alarm packet
  • the soft pseudowire HW packet encapsulating unit is configured to encapsulate the at least one protection switching decision into a soft pseudowire HW decision message and deliver the packet.
  • the apparatus for reducing the centralized protection switching time of the POTN system further includes:
  • a message buffering unit configured to cache the soft pseudowire HW alarm message
  • the protection switching configuration unit is set to pre-configure the protection switching policy.
  • protection switching algorithm implementation unit is configured to perform at least one protection switching process according to the alarm message parsing result provided by the soft pseudowire HW packet parsing unit and the preconfigured protection switching policy provided by the protection switching configuration unit, and Based on this, at least one protection switching decision is determined.
  • the protection switching algorithm implementation unit performs the at least one protection switching process in a parallel processing mode.
  • the protection switching algorithm implementation unit is a programmable device FPGA.
  • the device for reducing the centralized protection switching time of the POTN system provided by the embodiment of the present invention firstly parses the received soft PW HW alarm message encapsulated by the service board and/or the cross-board, and directly implements in the programmable device FPGA.
  • the protection switching algorithm, the upper APS software only needs to complete the protection switching configuration.
  • the protection switching mode and alarm type configured by the NMS determine at least one protection. The decision is made, and then the switching operation is performed by encapsulating the at least one protection switching decision into a soft pseudowire HW decision message to the service board and/or the cross board. This enables the protection channel to be switched quickly, reliably, and efficiently during the protection switching process, thereby significantly reducing the time for centralized protection switching.
  • the embodiment of the present invention further provides a system for reducing the centralized protection switching time of a POTN system, as shown in FIG. 9, including:
  • the service version and/or the cross-board are set to report the soft pseudowire HW alarm message
  • the main control board is configured to obtain the soft pseudowire HW alarm message, and parse the soft pseudowire HW alarm message, determine at least one protection switching decision according to the alarm message parsing result, and switch the at least one protection switch The decision is encapsulated into a soft pseudowire HW decision message and sent.
  • the programmable device FPGA included in the main control board is configured to send the soft pseudowire HW decision message to the hardware soft pseudowire HW high speed communication channel according to the sending polling policy;
  • the service version and/or the cross-board are further configured to parse and process the soft pseudo-wire HW decision message, and perform corresponding protection switching work according to the decision message parsing result.
  • 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.
  • each device/function module/functional unit in the above embodiment When each 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 foregoing technical solution realizes that the protection channel can be switched quickly, reliably, and effectively during the process of performing protection switching, thereby significantly reducing the time of centralized protection switching.

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Abstract

一种降低POTN系统集中式保护倒换时间的方法、装置及系统，所述方法包括：获取上报的软伪线HW告警报文；解析所述软伪线HW告警报文，依据告警报文解析结果确定至少一保护倒换决策，以及将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。上述技术方案采用模拟软伪线HW技术对告警和保护倒换命令进行封装，并制定了相关的报文格式，使得系统在执行保护倒换过程中，保护通道能够快速、可靠、有效地进行倒换，从而显著降低了集中式保护倒换的时间。

Description

降低POTN系统集中式保护倒换时间的方法、装置及系统 技术领域
本发明涉及通信领域，尤其涉及在多业务、大容量的PTN(Packet Transport Network，分组传送网)和OTN(Optical Transport Network，光传送网)融合的POTN((Packet-Optical Transport Network，分组光传送网)系统中降低POTN系统集中式保护倒换时间的方法、装置及系统。
背景技术
随着‘OTN下沉’和‘PTN上浮’的趋势越来越显，以太网、SDH(Synchronous Digital Hierarchy，同步数字体系)和OTN业务等多业务大承载的需求也越来越紧迫，故POTN系统应运而生。
分组光传送网(POTN)是深度融合分组传送和光传送技术的一种传送网，它基于统一分组交换平台，可同时支持L2交换(Ethernet/MPLS)和L1交换(OTN/SDH)，使得POTN在不同的应用和网络部署场景下，功能可被灵活地进行裁减和增添。POTN主要完成了GB/s到TB/s级速率的业务传输，并大量分布于通信接入、城域和主干传输系统中。POTN地位的重要性就如同连接于两地的主干线，一旦出现主干线毁坏等故障将导致大量的业务被中断。针对该种情况，业内研究人员专门设计了可靠的主干线业务保护系统，以提高POTN传输网络的生存能力，完善和提高保护倒换技术。
保护倒换技术在PTN和OTN系统中是不可缺少的关键技术，随着近年来两者的融合，随着带宽、通道或槽位数增加，保护组数也随之增加，所以快速、可靠、有效的保护倒换实现方法显得尤其重要。当网络发生故障时，随着业务和容量的增加，为提高POTN网络生成能力，就必须为POTN网络的承载业务提供更快速、合理的保护倒换机制，使得受影响的主干业务能够快速地被安排到预先分配好的保护路径进行传送，以此来最大程度地恢复和保护受影响的业务。
保护倒换结构主要有分布式控制模式和集中式控制模式，分布式控制模 式的优点是无效率问题，无背板容量限制，但缺点是只适用于协议稳定的保护，一旦开发完成，后期协议不能轻易进行调整，如果调整系统涉及硬件改动较大；集中式控制模式的优点是开发周期短，协议调整快速，没有明显功能缺陷，但缺点是效率负载有缺陷，多保护组下倒换容易超时。
当前超大容量的POTN中通常采取集中式控制模式，所以解决效率负载有缺陷，多保护组下倒换超时的问题就非常关键。
发明内容
本发明实施例提供了一种降低POTN系统集中式保护倒换时间的方法、装置及系统，以解决如何避免效率负载的缺陷，以及多保护组下倒换超时的技术问题。
为解决上述技术问题，本发明实施例采用以下技术方案实现：
一种降低分组光传送网POTN系统集中式保护倒换时间的方法，包括：
获取上报的软伪线快速通信通道HW(High Way，快速通信通道)告警报文；
解析所述软伪线HW告警报文，依据告警报文解析结果确定至少一保护倒换决策，以及将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。
可选地，依据告警报文解析结果确定至少一保护倒换决策，包括：
预配置保护倒换策略；
依据告警报文解析结果以及预配置的保护倒换策略执行至少一保护倒换处理，并据此确定至少一保护倒换决策。
可选地，所述保护倒换处理包括：并行处理模式。
可选地，所述依据告警报文解析结果以及预配置的保护倒换策略执行至少一保护倒换处理，包括：在可编程器件FPGA中依据告警报文解析结果以及预配置的保护倒换策略执行所述至少一保护倒换处理。
一种降低分组光传送网POTN系统集中式保护倒换时间的装置，包括：
业务告警状态检测单元，设置为获取上报的软伪线快速通信通道HW告 警报文；
软伪线HW报文解析单元，设置为解析所述软伪线HW告警报文；
保护倒换算法实现单元，设置为依据告警报文解析结果确定至少一保护倒换决策；
软伪线HW报文封装单元，设置为将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。
可选地，所述的降低POTN系统集中式保护倒换时间的装置还包括：
保护倒换配置单元，设置为预先配置保护倒换策略；
以及，所述保护倒换算法实现单元，是设置为依据软伪线HW报文解析单元提供的告警报文解析结果以及保护倒换配置单元提供的预配置的保护倒换策略执行至少一保护倒换处理，并据此确定至少一保护倒换决策。
可选地，所述保护倒换算法实现单元采取并行处理模式执行所述至少一保护倒换处理。
可选地，所述保护倒换算法实现单元包括：可编程器件FPGA。
一种降低分组光传送网POTN系统集中式保护倒换时间的系统，包括：
业务版和/或交叉板，设置为上报软伪线快速通信通道HW告警报文；
主控板，设置为获取所述软伪线HW告警报文，以及解析所述软伪线HW告警报文，依据告警报文解析结果确定至少一保护倒换决策，以及将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。
可选地，主控板，是设置为通过包含的可编程器件FPGA依据发送轮询策略将所述软伪线HW决策报文发送到硬件软伪线HW高速通信通道上；
以及业务版和/或交叉板，还设置为在获取到所述软伪线HW决策报文后对其进行解析处理，并依据决策报文解析结果执行相应的保护倒换工作。
一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于上述的方法。
上述技术方案采用模拟软伪线HW技术对告警和保护倒换命令进行封装，并制定了相关的报文格式，使得系统在执行保护倒换过程中，保护通道能够快速、可靠、有效地进行倒换，从而显著降低了集中式保护倒换的时间。
附图概述
图1为相关的集中式保护倒换的系统结构示意图；
图2为本发明实施例提供的集中式保护倒换的系统结构示意图；
图3为本发明实施例提供的降低POTN系统集中式保护倒换时间的方法流程示意图；
图4为本发明实施例主控板FPGA实现保护倒换的结构示意图；
图5为本发明实施例中软伪线HW告警报文格式示意图；
图6本发明实施例中软伪线HW决策报文格式示意图；
图7本发明实施例中快速保护倒换实现流程示意图；
图8为本发明实施例提供的降低POTN系统集中式保护倒换时间的装置结构示意图；
图9为本发明实施例提供的降低POTN系统集中式保护倒换时间的系统。
本发明的较佳实施方式
下面结合附图和实施例对本发明所述技术方案作进一步的详细描述，以使本领域的技术人员可以更好的理解本发明并能予以实施，但所举实施例不作为对本发明的限定。
如图2以及图3所示，本发明实施例提供的一种降低POTN系统集中式保护倒换时间的方法，包括下述步骤：
S10、获取上报的软伪线快速通信通道HW告警报文；
S20、解析所述软伪线HW告警报文，依据告警报文解析结果确定至少一保护倒换决策，以及将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。
本实施例提供的所述方法采用模拟软伪线HW技术对业务版和/或交叉板上报的告警信息以及主控板下发的保护倒换命令进行封装，并且在传统的集中式保护倒换的结构上，重新定义了软伪线HW报文并制定了相关的报文格 式。
现以主控板配置保护倒换策略，以及在业务板检测并上报告警后，主控板完成保护倒换算法，然后下发保护倒换命令至业务板，最终由交叉板(Selector)实现工作/保护通道间的切换来说明本发明实施例。
对于所述步骤S10，如图4所示，其为主控板FPGA实现保护倒换的结构图，由图4告警上行方向可知，业务板告警主要包括：基本信息、段层TMS、通路层TMP/电路层TMC、多协议标签交换层MS、以太网ETH以及自动保护倒换APS告警等。
业务板将上述告警，按照图5提供的报文封装格式封装好，该格式类似于以太网报文，可以通过DA/SA及Vlan ID来完成数据包的转发到主控板FPGA进行解析处理。
图5所示的软伪线HW报文定义了三种格式，但实际上都是类似的，有相同的23个字节的报文头，所述三种格式不同在于根据不同告警类型，其净荷部分不相同。其中：基本信息主要用于传递业务板的基本信息如槽位号、板类型等，最大可支持124个字节净荷信息；APS告警信息专门用于传输APS保护倒换的告警信息，最大支持288条APS告警信息；而TMS、TMP/TMC、MS和ETH等告警信息则归为一类，最大可支持505条告警信息。
对于所述步骤S20，本实施例中，解析所述软伪线HW告警报文并依据告警报文解析结果确定至少一保护倒换决策的步骤包括：
S201、缓存并解析所述软伪线HW告警报文；
S202、预配置保护倒换策略，依据告警报文解析结果以及预配置的保护倒换策略执行至少一保护倒换处理，并据此确定至少一保护倒换决策。
首先获取来自主控板APS软件对主控板的配置，如保护倒换类型，保护组等。整个保护倒换配置及运行实现的方法如图7所示的流程图所示，其只需要通过软件进行配置，其余的保护倒换算法和操作都由主控FPGA和业务板间的软伪线HW通信实现。
在主控板接收到业务板上送的软伪线HW告警报文后，将每个业务板封装和上送的告警信息缓存，然后按照主控板APS软件配置的保护倒换方式，分别进行复用段保护MSP倒换处理、多协议标签交换MPLS-快速重路由FRR 保护倒换处理、标记交换路径LSP/伪线PW线性保护倒换处理、虚拟专用网VPN保护倒换处理和APS信息接收处理等，从而完成保护倒换算法，准备进行保护倒换决策下发。
本实施例中，可选地，所述保护倒换处理被设置为并行处理模式。所有的保护倒换算法都能同时进行，减少了保护倒换的运算时间，特别是在保护组众多的POTN系统中。
另外，如图1所示，集中式控制模式主要由告警监测(Monitor)、工作/保护通道执行选择(Selector)以及保护倒换控制(APST)三部分构成，而倒换时间的精度也由这三部分决定。相关方法中，告警监测(Monitor)通常由业务板成帧器完成，告警及保护信息传递通道由以太网口实现，保护倒换控制主要由主控板APS软件中的保护算法单元完成，采用相关的方式，其制约保护倒换时间的地方主要体现在：保护算法单元实现方案以及告警及保护信息传递通道上，而这两部分功能都是在软件层面进行操作的，没有直接通过可编程器件(FPGA)等快速硬件执行器来实现。
因此，在本实施例中，在可编程器件FPGA中依据告警报文解析结果以及预配置的保护倒换策略执行所述至少一保护倒换处理。主控板与业务板、交叉板间的报文传递采用FPGA模拟软伪线(软伪线HW)的方式进行封装和传递，这使得报文能以最快时间交换，这是最接近底层硬件的处理，也可以最大限度的节省时间。
如图6所示，为主控板完成保护倒换算法，下发保护倒换决策到业务板和交叉板的软伪线HW报文格式，其与接收方向的告警报文格式类似，同样由报文23个报文头加N个净荷字节组成，N由不同的决策报文类型决定。
本实施例中，下发的决策报文定义了4个格式，包括基本信息、APS决策信息、MSP决策信息以及其它保护倒换决策信息(包括MPLS FRR决策信息、LSP/PW决策信息和VPN决策结果信息)。如图3所示，每种封装好的报文将在主控板的FPGA处理中按发送轮询的方法进行调度发送到硬件软伪线HW高速通信通道上，最后经过三层交换芯片转发。业务板和交叉板接收到决策报文，按相应格式解析出保护倒换命令后，从而完成相应的工作与保护通道的切换工作。
可见，本发明实施例首先将接收到的业务板和/或交叉板封装的软伪线HW告警报文进行解析，并直接在可编程器件FPGA中实现保护倒换算法，上层APS软件只需要完成保护倒换的配置。再根据网管配置的保护倒换方式及告警类型，确定至少一保护倒换决策，然后再通过将所述至少一保护倒换决策封装成软伪线HW决策报文下发到业务板和/或交叉板执行倒换操作。采用该方法，使得系统在执行保护倒换过程中，保护通道能够快速、可靠、有效地进行倒换，从而显著降低了集中式保护倒换的时间。
如图8所示，本发明实施例还提供了一种降低POTN系统集中式保护倒换时间的装置，包括：
业务告警状态检测单元，设置为获取上报的软伪线快速通信通道HW告警报文；
软伪线HW报文解析单元，设置为解析所述软伪线HW告警报文；
保护倒换算法实现单元，设置为依据告警报文解析结果确定至少一保护倒换决策；
软伪线HW报文封装单元，设置为将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。
本实施例中，所述的降低POTN系统集中式保护倒换时间的装置还包括：
报文缓存单元，设置为缓存所述软伪线HW告警报文；
保护倒换配置单元，设置为预先配置保护倒换策略；
以及，所述保护倒换算法实现单元，是设置为依据软伪线HW报文解析单元提供的告警报文解析结果以及保护倒换配置单元提供的预配置的保护倒换策略执行至少一保护倒换处理，并据此确定至少一保护倒换决策。
其中，所述保护倒换算法实现单元采取并行处理模式执行所述至少一保护倒换处理。
所述保护倒换算法实现单元为可编程器件FPGA。
本发明实施例提供的降低POTN系统集中式保护倒换时间的装置，首先将接收到的业务板和/或交叉板封装的软伪线HW告警报文进行解析，并直接在可编程器件FPGA中实现保护倒换算法，上层APS软件只需要完成保护倒换的配置。再根据网管配置的保护倒换方式及告警类型，确定至少一保护倒 换决策，然后再通过将所述至少一保护倒换决策封装成软伪线HW决策报文下发到业务板和/或交叉板执行倒换操作。使得在执行保护倒换过程中，保护通道能够快速、可靠、有效地进行倒换，从而显著降低了集中式保护倒换的时间。
相应地，参考图3所示，本发明实施例还提供了一种降低POTN系统集中式保护倒换时间的系统，如图9所示，包括：
业务版和/或交叉板，设置为上报软伪线HW告警报文；
主控板，设置为获取所述软伪线HW告警报文，以及解析所述软伪线HW告警报文，依据告警报文解析结果确定至少一保护倒换决策，以及将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。
主控板包含的可编程器件FPGA，设置为依据发送轮询策略将所述软伪线HW决策报文发送到硬件软伪线HW高速通信通道上；
业务版和/或交叉板，还设置为在获取到所述软伪线HW决策报文后对其进行解析处理，并依据决策报文解析结果执行相应的保护倒换工作。
对于所述保护倒换的具体实施过程可参考上文所述，此处不再桌数。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，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。
上述实施例中的各装置/功能模块/功能单元可以采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，也可以分布在多个计算装置所组成的网络上。
上述实施例中的各装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
工业实用性
上述技术方案实现了系统在执行保护倒换过程中，保护通道能够快速、可靠、有效地进行倒换，从而显著降低了集中式保护倒换的时间。

Claims (11)

  1. 一种降低分组光传送网POTN系统集中式保护倒换时间的方法，包括：
    获取上报的软伪线快速通信通道HW告警报文；
    解析所述软伪线HW告警报文，依据告警报文解析结果确定至少一保护倒换决策，以及将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。
  2. 如权利要求1所述的降低POTN系统集中式保护倒换时间的方法，其中，依据告警报文解析结果确定至少一保护倒换决策，包括：
    预配置保护倒换策略；
    依据告警报文解析结果以及预配置的保护倒换策略执行至少一保护倒换处理，并据此确定至少一保护倒换决策。
  3. 如权利要求2所述的降低POTN系统集中式保护倒换时间的方法，其中，所述保护倒换处理包括：并行处理模式。
  4. 如权利要求2所述的降低POTN系统集中式保护倒换时间的方法，其中，所述依据告警报文解析结果以及预配置的保护倒换策略执行至少一保护倒换处理，包括：
    在可编程器件FPGA中依据告警报文解析结果以及预配置的保护倒换策略执行所述至少一保护倒换处理。
  5. 一种降低分组光传送网POTN系统集中式保护倒换时间的装置，包括：
    业务告警状态检测单元，设置为获取上报的软伪线快速通信通道HW告警报文；
    软伪线HW报文解析单元，设置为解析所述软伪线HW告警报文；
    保护倒换算法实现单元，设置为依据告警报文解析结果确定至少一保护倒换决策；
    软伪线HW报文封装单元，设置为将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。
  6. 如权利要求5所述的降低POTN系统集中式保护倒换时间的装置，还包括：
    保护倒换配置单元，设置为预先配置保护倒换策略；
    所述保护倒换算法实现单元，是设置为依据软伪线HW报文解析单元提供的告警报文解析结果以及保护倒换配置单元提供的预配置的保护倒换策略执行至少一保护倒换处理，并据此确定至少一保护倒换决策。
  7. 如权利要求6所述的降低POTN系统集中式保护倒换时间的装置，其中，所述保护倒换算法实现单元采取并行处理模式执行所述至少一保护倒换处理。
  8. 如权利要求6所述的降低POTN系统集中式保护倒换时间的装置，其中，所述保护倒换算法实现单元包括可编程器件FPGA。
  9. 一种降低分组光传送网POTN系统集中式保护倒换时间的系统，包括：
    业务版和/或交叉板，设置为上报软伪线快速通信通道HW告警报文；
    主控板，设置为获取所述软伪线HW告警报文，以及解析所述软伪线HW告警报文，依据告警报文解析结果确定至少一保护倒换决策，以及将所述至少一保护倒换决策封装成软伪线HW决策报文并下发。
  10. 如权利要求9所述的降低POTN系统集中式保护倒换时间的系统，其中，
    主控板，是设置为通过包含的可编程器件FPGA依据发送轮询策略将所述软伪线HW决策报文发送到硬件软伪线HW高速通信通道上；
    以及业务版和/或交叉板，还设置为在获取到所述软伪线HW决策报文后对其进行解析处理，并依据决策报文解析结果执行相应的保护倒换工作。
  11. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求1～4中任一项所述的方法。
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Publication number Priority date Publication date Assignee Title
CN107623597A (zh) * 2017-09-22 2018-01-23 烽火通信科技股份有限公司 一种小型化potn设备及远程掉电提示方法
CN114257504A (zh) * 2021-12-15 2022-03-29 烽火通信科技股份有限公司 业务场景切换方法及系统
CN115314365A (zh) * 2022-07-05 2022-11-08 杭州云合智网技术有限公司 单保护组集合的快速切换方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107872333B (zh) * 2016-09-23 2020-12-04 中兴通讯股份有限公司 一种传输多协议分组段层tms的处理方法、装置及系统
CN107734404B (zh) * 2017-09-21 2020-06-16 烽火通信科技股份有限公司 基于fpga的波分设备电层保护实现系统及方法
CN108462549B (zh) 2017-11-22 2019-07-09 上海欣诺通信技术股份有限公司 保护组叠加倒换方法、控制装置及光通信设备
CN111953524B (zh) * 2020-07-21 2022-04-19 烽火通信科技股份有限公司 一种流水线机制的保护倒换方法及通信设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101145856A (zh) * 2006-09-13 2008-03-19 中兴通讯股份有限公司 一种实现自动保护倒换的多播通信方法及装置
CN101150462A (zh) * 2007-10-18 2008-03-26 中兴通讯股份有限公司 保护倒换方法
CN101986594A (zh) * 2010-11-18 2011-03-16 中兴通讯股份有限公司 一种实现单板间通讯的方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7573814B1 (en) * 2001-10-31 2009-08-11 Redback Networks Inc. Method and apparatus for protection of an optical network
US7023842B2 (en) * 2002-03-14 2006-04-04 Nortel Networks Limited Switch model component
CN101431371B (zh) * 2007-11-09 2011-12-21 华为技术有限公司 一种光网络设备信道保护倒换的方法及装置
CN101888268B (zh) * 2009-05-14 2013-09-11 中兴通讯股份有限公司 一种在以太无源光网络实现主干光纤保护的方法和装置
CN103580886B (zh) * 2012-07-25 2017-10-27 中兴通讯股份有限公司 分组传送网络保护倒换装置和方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101145856A (zh) * 2006-09-13 2008-03-19 中兴通讯股份有限公司 一种实现自动保护倒换的多播通信方法及装置
CN101150462A (zh) * 2007-10-18 2008-03-26 中兴通讯股份有限公司 保护倒换方法
CN101986594A (zh) * 2010-11-18 2011-03-16 中兴通讯股份有限公司 一种实现单板间通讯的方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3208971A4 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107623597A (zh) * 2017-09-22 2018-01-23 烽火通信科技股份有限公司 一种小型化potn设备及远程掉电提示方法
CN107623597B (zh) * 2017-09-22 2020-07-21 烽火通信科技股份有限公司 一种小型化potn设备及远程掉电提示方法
CN114257504A (zh) * 2021-12-15 2022-03-29 烽火通信科技股份有限公司 业务场景切换方法及系统
CN114257504B (zh) * 2021-12-15 2023-05-23 烽火通信科技股份有限公司 业务场景切换方法及系统
CN115314365A (zh) * 2022-07-05 2022-11-08 杭州云合智网技术有限公司 单保护组集合的快速切换方法

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