WO2012006852A1 - 传输同步状态信息的方法、系统和时钟板 - Google Patents

传输同步状态信息的方法、系统和时钟板 Download PDF

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Publication number
WO2012006852A1
WO2012006852A1 PCT/CN2010/079578 CN2010079578W WO2012006852A1 WO 2012006852 A1 WO2012006852 A1 WO 2012006852A1 CN 2010079578 W CN2010079578 W CN 2010079578W WO 2012006852 A1 WO2012006852 A1 WO 2012006852A1
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Prior art keywords
board
clock
clock board
service
status information
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PCT/CN2010/079578
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English (en)
French (fr)
Inventor
徐继超
宋进源
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中兴通讯股份有限公司
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Publication of WO2012006852A1 publication Critical patent/WO2012006852A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/06Synchronising arrangements
    • H04J3/0635Clock or time synchronisation in a network
    • H04J3/0685Clock or time synchronisation in a node; Intranode synchronisation
    • H04J3/0697Synchronisation in a packet node

Definitions

  • the present invention relates to the field of communications, and in particular to a method, system, and clock board for transmitting synchronization state information.
  • SSM synchronization state information
  • the real-time transmission of the SSM between the clock board and the service board is an important part of the clock source protection switching and clock networking protection. It directly affects whether the phase-locked loop tracking is a high-quality clock signal and networking protection function, which affects the entire network. The clock signal status, as well as the entire SDH network is working properly.
  • a primary object of the present invention is to provide a method, system, and clock board for transmitting synchronization state information to solve the problems of high production cost and maintenance cost caused by the above hardware control mode.
  • a method for transmitting synchronization state information including: a clock board transmitting synchronization state information to a service board by using an Ethernet packet exchange manner.
  • a clock board including: a sending module, configured to send synchronization state information to a service board by using an Ethernet switch.
  • a system for transmitting synchronization state information including: a service board and the above-described clock board.
  • the method, system and clock board for transmitting synchronization status information of the present invention send synchronization status information to the service board through the Ethernet packet exchange mode, which is a software control method, so the implementation is simple and the maintenance cost is reduced.
  • FIG. 1 is a flowchart of a method of transmitting synchronization state information according to a preferred embodiment of the present invention
  • FIG. 2 is a flowchart of a method of transmitting synchronization state information according to a preferred embodiment of the present invention
  • a schematic diagram of a clock board of a preferred embodiment of the invention and FIG.
  • FIG. 4 is a schematic diagram of a system for transmitting synchronization status information in accordance with a preferred embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.
  • a method for transmitting synchronization state information including: the clock board sends synchronization state information to the service board in an Ethernet packet exchange manner.
  • SSM information is transmitted through a hardware control manner between a clock board and a service board.
  • the clock board uses the existing Ethernet channel between the clock board and the service board to transmit SSM information to the service board through Ethernet packet exchange.
  • the SSM information is transmitted through the hardware control mode between the clock board and the service board.
  • the Ethernet packet exchange mode is used, the existing Ethernet can be shared with other communications. aisle. Because there is no need to create new hardware channels, integration can be increased, saving production and maintenance costs for delivering SSM.
  • 1 is a flowchart of a method for transmitting synchronization state information according to a preferred embodiment of the present invention.
  • the method further includes: Step S102: determining a clock Whether at least one of the following events occurs on the board: The system clock quality level of the clock board changes; the clock source of the clock board is protected and switched; the clock board receives the service board. The notification of the dynamic receipt; the clock board receives the notification that the network management station forcibly transmits the SSM information; Step S104, if yes, the clock board sends the synchronization status information to the service board. Inter-board communication or S-port communication is between the board and the board. The internal data of the system is transmitted between the NCP and the board, and there is no interaction with the network management.
  • the SSM information is transmitted only when the specific event is driven, which can ensure the real-time performance of the SSM information transmission and reduce the traffic volume, thus solving the problem of contradiction between the real-time requirement of transmitting the SSM and the channel pressure.
  • it is further determined whether the transmission period is reached, and if yes, the clock board sends the SSM information to the service board.
  • SSM information is transmitted as frequently as possible.
  • the period for periodically transmitting the SSM information can be set relatively large to reduce the traffic and avoid affecting other S-port communications.
  • the clock board first determines whether the system clock quality level of the clock board changes, and then determines whether the clock source of the clock board has protection switching, and then determines whether the clock board receives the notification of the service board startup, and then determines whether the clock board receives the signal board.
  • the NMS forcibly sends a notification of the SSM information, and then determines whether the transmission period has been reached. In the process of the sequence determination, once the judgment is established, the subsequent judgment step is ignored, and the step of transmitting the SSM information to the service board by the clock board is directly executed.
  • Step S201 After an event occurs, determine whether the event is a change in the system clock quality level, and if yes, proceed to step S205. Otherwise, the process goes to step S202. In this step, the current system clock is detected. If the system clock only changes the quality level and does not cause the clock source protection switching, the flag triggers the flag of the SSM information to be transmitted, and performs the step of transmitting the SSM information. In step S202, it is determined whether the event is a protection switching of the clock source. If the process proceeds to step S205, the process proceeds to step S203.
  • step S203 it is determined whether the event is a notification after the service board is started. If the process proceeds to step S205, the process proceeds to step S204. After the service board is added to the service board or the service board is restarted, the service board is notified of the clock format by sending a specific format of the SSM message (for example, the message with all 0s). The board needs to pass the current SSM information to the service board.
  • step S204 it is determined whether the event is a notification that the network management station forcibly transmits the SSM information, and if it is the transfer step 4 S205, otherwise it returns to step 4 to S201.
  • the NMS forcibly sends a specific S SM information to a port of a service board. If the clock board receives and parses the packet correctly, the flag triggers the step of transmitting the SSM information and performs the step of sending the SSM information.
  • Step S205 Send current SSM information.
  • the current SSM is broadcasted to all in-position service boards in the form of multicast, and steps S201-S205 are continued after receiving the event.
  • the status of each service board is detected, and the SSM information of the current system clock source and the SSM information are forcibly transmitted by the network management system, and the 4 ⁇ text is written in the form of multicast, and all The bit of the service board broadcasts the current SSM information.
  • the above steps S201 to S205 form an execution process.
  • the above-described determination order is used, but the present invention is not limited thereto, and the clock board may judge the received events in an order different from the above order.
  • Step S206 whether the timing of periodically transmitting the SSM information is up, if it is, the process proceeds to step S207.
  • the transmission period of other periodic Ethernet packets of the inter-board communication is staggered, avoiding the confrontation with them, and selecting the period of the SSM information to be transmitted periodically, for example, the selection period is 11 In 11 seconds.
  • the step of transmitting the SSM information is performed.
  • Step S207 the current SSM information is sent, and the timer is restarted, and the process returns to step S206.
  • the current SSM is broadcasted to all in-position service boards in the form of multicast.
  • steps S206-S207 form a loop, and the execution process formed by the above steps S201 to S205 and the loop of the step S206-S207 are in a parallel relationship, that is, whether or not the execution process formed by the step S201 to step S205 is performed. Go to step S205, the loops of steps S206-S207 are both
  • the transmission period is set to be out of synchronization with the period of other communication of the shared Ethernet channel. This can reduce the pressure of communication between boards and reduce the possibility of blocking.
  • the clock board sends the SSM information to multiple service boards in a multicast manner.
  • the related technology is to transmit the SSM information in a point-to-point packet manner, which is better than the point-to-point packet mode, so as to better ensure the real-time synchronization of the SSM information of each service board and the clock board.
  • An embodiment of the present invention provides a clock board, including: a sending module, configured to send synchronization state information to a service board by using an Ethernet 4 text exchange mode.
  • a dedicated hardware connection is established between the clock board and the service board to transmit SSM information, which is a hardware control method.
  • this since the synchronization state information is sent to the service board through the Ethernet 4 text exchange mode, this is a software control method, so the implementation is simple, the integration degree can be improved, and the maintenance cost is reduced.
  • FIG. 3 is a schematic diagram of a clock board according to a preferred embodiment of the present invention, including: a determining module 10, configured to determine whether the clock board has at least one of the following events: a system clock quality level of the clock board changes; a clock of the clock board
  • the source board is protected and switched.
  • the clock board receives the notification that the service board is started.
  • the clock board receives the notification that the network management unit sends the synchronization status information.
  • the sending module 20 is configured to send the synchronization status information to the service board when the module determines that the module is YES.
  • the sending module uses the existing Ethernet channel between the clock board and the service board to transmit the synchronization status information to the service board through the Ethernet 4 text exchange mode.
  • the determining module further determines whether the sending period is reached, and the sending module sends the synchronization status information to the service board when the determining module determines to be YES, wherein the sending period is not synchronized with the period of the other communication of the shared Ethernet channel.
  • An embodiment of the present invention further provides a system for transmitting synchronization state information, including: a service board and a clock board of any of the foregoing embodiments.
  • FIG. 4 is a schematic diagram of a system for transmitting synchronization state information according to a preferred embodiment of the present invention, including: a clock board 1 having a channel for transmitting synchronization state information; a service board 2, establishing a connection with the clock board 1, and transmitting synchronization state information, wherein The clock board 1 establishes a connection with multiple service boards 2, and broadcasts and transmits synchronization status information in a multicast manner through an Ethernet packet exchange manner. Because many large-scale communication devices have about 40 service slots and no less than two ports in each slot.
  • the multicast slot message transmission mode can also improve the first slot service board and The last slot service board obtains the simultaneity of the current SSM information, so as to better ensure the real-time synchronization of the SSM information of each service board and the clock board.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

本发明的主要目的在于提供一种传输同步状态信息的方法、系统和时钟板,该方法包括:时钟板通过以太网报文交换方式向业务板发送同步状态信息。本发明实现简单,降低了维护成本。

Description

传输同步状态信息的方法、 系统和时钟板 技术领域 本发明涉及通信领域, 具体而言, 涉及一种传输同步状态信息的方法、 系统和时钟板。 背景技术 在同步数字通信网 ( SDH/SONET ) 中, 同步状态信息 ( SSM ) 是时钟 单元实现时钟组网保护的重要保证, 时钟源的保护倒换通过 SSM 来实现。 而时钟板与业务板间实时传递 SSM 是时钟源保护倒换和时钟组网保护的重 要环节,其直接影响锁相环跟踪的是否为高质量的时钟信号和组网保护功能, 进而影响整个组网的时钟信号状况, 以及整个 SDH网络正常工作。 发明人发现目前的技术通过硬件控制方式在时钟板与业务板间传递 SSM信息, 实现复杂, 集成度低、 可靠性低。 发明内容 本发明的主要目的在于提供一种传输同步状态信息的方法、 系统和时钟 板, 以解决上述硬件控制方式导致的生产成本和维护成本较高的问题。 为了实现上述目的, 根据本发明的一个方面, 提供了一种传输同步状态 信息的方法, 包括: 时钟板通过以太网报文交换方式向业务板发送同步状态 信息。 为了实现上述目的, 根据本发明的另一方面, 提供了一种时钟板, 包括: 发送模块, 用于通过以太网 4艮文交换方式向业务板发送同步状态信息。 为了实现上述目的, 根据本发明的另一方面, 提供了一种传输同步状态 信息的系统, 包括: 业务板和上述的时钟板。 本发明的传输同步状态信息的方法、 系统和时钟板因为通过以太网报文 交换方式向业务板发送同步状态信息, 这是一种软件控制方法, 所以实现简 单, 降低了维护成本。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是根据本发明优选实施例的传输同步状态信息的方法的流程图; 图 2是根据本发明优选实施例的传输同步状态信息的方法的流程图; 图 3是根据本发明优选实施例的时钟板的示意图; 图 4是根据本发明优选实施例的传输同步状态信息的系统示意图。 具体实施方式 需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的特 征可以相互组合。 下面将参考附图并结合实施例来详细说明本发明。 根据本发明的实施例, 提供了一种传输同步状态信息的方法, 包括: 时 钟板通过以太网报文交换方式向业务板发送同步状态信息。 在相关技术中, 在时钟板与业务板之间通过硬件控制方式传送 SSM 信 息。 本实施例因为通过以太网报文交换方式向业务板发送同步状态信息, 这 是一种软件控制方法, 所以实现简单, 降低了生产和维护成本。 优选地, 时钟板共享地使用时钟板与业务板之间已有的以太网通道, 通 过以太网报文交换方式向业务板发送 SSM 信息。 在相关技术中, 在时钟板 与业务板之间通过硬件控制方式传送 SSM 信息, 而本实施例中, 因为釆用 的是以太网报文交换方式, 所以可以与其他通信共享已有的以太网通道。 因 为不用新建硬件通道, 所以可以提高集成度, 节省了传递 SSM 的生产和维 护成本。 图 1是根据本发明优选实施例的传输同步状态信息的方法的流程图, 在 时钟板通过以太网报文交换方式向业务板发送同步状态信息之前, 上述方法 还包括: 步骤 S 102 , 判断时钟板是否发生以下至少一种事件: 时钟板的系统时钟 质量等级发生变化; 时钟板的时钟源发生保护倒换; 时钟板接收到业务板启 动的通知; 时钟板接收到网管强制发送 SSM信息的通知; 步骤 S 104, 如果是, 则时钟板向业务板发送同步状态信息。 板间通讯或叫 S口通讯, 是单板和单板之间, NCP和单板之间传递系统 内部数据, 与网管无交互的通讯。 如果为了在时钟板与业务板间实时传递 SSM, 尽可能频繁地传递 SSM, 这种频繁通讯有可能导致 S口通讯阻塞。 本 实施例在特定事件驱动的情况下才传送 SSM信息, 这既能保证 SSM信息传 递的实时性, 又能减少通信量, 所以解决了传送 SSM 的实时性要求与通道 压力之间产生矛盾的问题。 优选地,还判断是否达到发送周期,如果是,则时钟板向业务板发送 SSM 信息。 相关技术中为了保证 SSM 信息传递的实时性, 而尽可能频繁地传送 SSM信息。 而本实施例中, 因为合理地设置了传送 SSM信息的触发事件, 所以定时地发送 SSM 信息的周期可以设置得比较大, 以减少通信量, 避免 影响其他 S口通信。 优选地, 时钟板先判断时钟板的系统时钟质量等级是否发生变化, 然后 判断时钟板的时钟源是否发生保护倒换, 然后判断时钟板是否接收到业务板 启动的通知, 然后判断时钟板是否接收到网管强制发送 SSM 信息的通知, 然后判断是否已到达发送周期; 在顺序判断的过程中, 一旦判断成立, 则忽 略之后的判断步骤, 直接执行时钟板向业务板发送 SSM信息的步骤。 图 2是根据该优选实施例的传输同步状态信息的方法的流程图, 包括如 下步 4聚: 步骤 S201 , 在发生事件之后, 判断事件是否为系统时钟质量等级发生变 化, 如果是转入步骤 S205 , 否则转入步骤 S202。 该步骤中检测当前系统时钟, 如果系统时钟只是发生质量等级的改变没 有引起时钟源保护倒换,则标记触发传递 SSM信息的标志位,执行发送 SSM 信息的步 4聚。 步骤 S202,判断事件是否为时钟源发生保护倒换,如果是转入步骤 S205 , 否则转入步骤 S203。 该步骤中由于电源输入丢失告警、 质量等级改变、 强制切换定时源等原 因, 造成当前时钟源发生保护倒换, 则标记触发传递 SSM 信息的标志位, 执行发送 SSM信息的步骤。 步骤 S203 ,判断事件是否为业务板启动后的通知,如果是转入步骤 S205 , 否则转入步骤 S204。 由于新增加插入业务板, 或者重新启动已有业务板等原因, 约定业务板 在进入正常运行状态后, 通过发送 SSM信息报文的特定格式(如内文为全 0 的报文) 通知时钟单板需要传递当前 SSM 信息给业务板。 如果时钟单板收 到并解析为该特定报文,则标记触发传递 SSM信息的标志位,执行发送 SSM 信息的步骤。 步骤 S204 , 判断事件是否为网管强制发送 SSM信息的通知, 如果是转 入步 4聚 S205 , 否则又回到步 4聚 S201。 该步骤中由于网管强制对某个业务板的某个端口强制发送特定的 S SM 信息, 如果时钟单板收到并解析正确, 则标记触发传递 SSM信息的标志位, 执行发送 SSM信息的步骤。 步骤 S205 , 发送当前 SSM信息。 本实施例以组播的形式向所有在位的 业务板广播发送当前 SSM, 接收到事件后继续执行步骤 S201-S205。 该步骤中检测各业务板在位情况, 并才艮据当前系统时钟源的 SSM 信息 和网管强制传递 SSM 信息的情况, 参照 4艮文规范, 以组播形式编写 4艮文, 并向所有在位的业务板广播发送当前 SSM信息。 以上的步骤 S201到步骤 S205形成一个执行过程。 本实施例釆用上述的 判断次序, 但本发明不限定于此, 时钟板也可以对接收到的事件釆用不同于 上述次序的次序进行判断。 步骤 S206, 定时发送 SSM信息的计时是否到, 如果是转入步骤 S207。 该步骤中根据 S口通讯的报文发送的具体情况, 错开板间通讯的其它周 期性以太网报文的发送周期, 避免与它们交锋, 选择定时循环传递 SSM 信 息的周期, 如选择周期为 11分 11秒。如果定时周期性发送 SSM信息的计时 到则执行发送 SSM信息的步骤。 步骤 S207, 发送当前 SSM信息, 并重新启动定时器, 回到步骤 S206。 本实施例以组播的形式向所有在位的业务板广播发送当前 SSM。 该步骤中检测各业务板在位情况, 并才艮据当前系统时钟源的 SSM 信息 和网管强制传递 SSM 信息的情况, 参照 4艮文规范, 以组播形式编写 4艮文, 并向所有在位的业务板广播发送当前 SSM信息。 另外, 步骤 S206-S207形成一个循环, 以上的步骤 S201到步骤 S205形 成的执行过程和步 4聚 S206-S207的循环是并行的关系, 即不管步 4聚 S201到 步骤 S205形成的执行过程是否执行到步骤 S205 , 步骤 S206-S207的循环都
4夺独立地执行, 并不断循环下去。 需要说明的是, 在附图的流程图示出的步骤可以在诸如一组计算机可执 行指令的计算机系统中执行, 并且, 虽然在流程图中示出了逻辑顺序, 但是 在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤来执行。 优选地, 发送周期设置为与共享以太网通道的其他通信的周期不同步。 这可以降低板间通讯的压力, 减少阻塞的可能。 优选地, 时钟板通过组播方式向多个业务板发送 SSM 信息。 相关技术 是釆用点对点报文方式传送 SSM 信息, 与点对点报文方式相比, 从而更好 地保证各业务板与时钟板的 SSM信息同步的实时性。 本发明实施例提供了一种时钟板, 包括: 发送模块, 用于通过以太网 4艮 文交换方式向业务板发送同步状态信息。 在相关技术中,在时钟板与业务板之间建立专门的硬件连线以传送 SSM 信息, 这属于一种硬件控制方式。 本实施例因为通过以太网 4艮文交换方式向 业务板发送同步状态信息, 这是一种软件控制方法, 所以实现简单, 可以提 高集成度, 降低了维护成本。 图 3是才艮据本发明优选实施例的时钟板的示意图, 包括: 判断模块 10 , 用于判断时钟板是否发生以下至少一种事件: 时钟板的系 统时钟质量等级发生变化; 时钟板的时钟源发生保护倒换; 时钟板接收到业 务板启动的通知; 时钟板接收到网管强制发送同步状态信息的通知; 发送模块 20用于判断模块判断为是时, 向业务板发送同步状态信息。 优选地, 发送模块共享地使用时钟板与业务板之间已有的以太网通道, 通过以太网 4艮文交换方式向业务板发送同步状态信息。 优选地, 判断模块还判断是否达到发送周期, 发送模块在判断模块判断 为是时, 向业务板发送同步状态信息, 其中, 发送周期与共享以太网通道的 其他通信的周期不同步。 本发明的实施例还提供了一种传输同步状态信息的系统, 包括: 业务板 和上述任一实施例的时钟板。 图 4是根据本发明优选实施例的传输同步状态信息的系统的示意图, 包 括: 时钟板 1 , 具有传输同步状态信息的通道; 业务板 2 , 与时钟板 1 建立 连接, 传输同步状态信息, 其中, 时钟板 1与多个业务板 2建立连接, 并通 过以太网报文交换方式实现以组播的形式广播发送同步状态信息。 因为许多大型通讯设备, 其业务槽位有 40 个左右, 每个槽位不少于两 个端口, 本实施例釆用组播形式报文广播发送方式还可以提高第一个槽位业 务板和最后一个槽位业务板获取当前 SSM 信息的同时性, 从而更好地保证 各业务板与时钟板的 SSM信息同步的实时性。 从以上的描述中, 可以看出, 本发明实现了如下技术效果: 在特定事件 驱动的情况下才传送 SSM信息, 这既能保证 SSM信息传递的实时性, 又能 减少通信量, 所以解决了相关技术的传送 SSM 的实时性要求与通道压力之 间产生矛盾的问题。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软 件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种传输同步状态信息的方法, 其特征在于, 包括:
时钟板通过以太网 4艮文交换方式向业务板发送所述同步状态信息。
2. 根据权利要求 1所述的方法, 其特征在于, 所述时钟板共享地使用所述 时钟板与所述业务板之间已有的以太网通道, 通过以太网 4艮文交换方式 向所述业务板发送所述同步状态信息。
3. 居权利要求 2所述的方法, 其特征在于, 在所述时钟板通过所述以太 网报文交换方式向所述业务板发送所述同步状态信息之前, 所述方法还 包括:
判断所述时钟板是否发生以下至少一种事件:
所述时钟板的系统时钟质量等级发生变化;
所述时钟板的时钟源发生保护倒换;
所述时钟板接收到业务板启动的通知;
所述时钟板接收到网管强制发送所述同步状态信息的通知; 如果是, 则所述时钟板向所述业务板发送所述同步状态信息。
4. 根据权利要求 3所述的方法, 其特征在于, 还判断是否达到发送周期, 如果是, 则所述时钟板向所述业务板发送所述同步状态信息。
5. 根据权利要求 4所述的方法, 其特征在于, 所述时钟板先判断所述时钟 板的系统时钟质量等级是否发生变化, 然后判断所述时钟板的时钟源是 否发生保护倒换, 然后判断所述时钟板是否接收到业务板启动的通知, 然后判断所述时钟板是否接收到网管强制发送所述同步状态信息的通 知, 然后判断是否已到达发送周期; 在顺序判断的过程中, 一旦判断成 立, 则忽略之后的判断步骤, 直接执行所述时钟板向所述业务板发送所 述同步状态信息的步骤。
6. 根据权利要求 4所述的方法, 其特征在于, 所述发送周期设置为与共享 所述以太网通道的其他通信的周期不同步。
7. 根据权利要求 1所述的方法, 其特征在于, 所述时钟板通过组播方式向 多个所述业务板发送所述同步状态信息。
8. —种时钟板, 其特征在于, 包括:
发送模块, 用于通过以太网报文交换方式向业务板发送所述同步状 态信息。
9. 根据权利要求 8所述的时钟板, 其特征在于, 还包括:
判断模块, 用于判断所述时钟板是否发生以下至少一种事件: 所述时钟板的系统时钟质量等级发生变化;
所述时钟板的时钟源发生保护倒换;
所述时钟板接收到业务板启动的通知;
所述时钟板接收到网管强制发送所述同步状态信息的通知; 所述发送模块用于所述判断模块判断为是时,向所述业务板发送所 述同步状态信息。
10. 根据权利要求 9所述的时钟板, 其特征在于, 所述判断模块还判断是否 达到发送周期, 所述发送模块在所述判断模块判断为是时, 向所述业务 板发送所述同步状态信息, 其中, 所述发送周期与共享所述以太网通道 的其他通信的周期不同步。
11. 一种传输同步状态信息的系统, 其特征在于, 包括: 业务板和根据权利 要求 8-10任一项所述的时钟板。
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