WO2013044643A1 - 分组业务总线的切换方法、系统及数据交换通信设备 - Google Patents

分组业务总线的切换方法、系统及数据交换通信设备 Download PDF

Info

Publication number
WO2013044643A1
WO2013044643A1 PCT/CN2012/076345 CN2012076345W WO2013044643A1 WO 2013044643 A1 WO2013044643 A1 WO 2013044643A1 CN 2012076345 W CN2012076345 W CN 2012076345W WO 2013044643 A1 WO2013044643 A1 WO 2013044643A1
Authority
WO
WIPO (PCT)
Prior art keywords
service
board
switch
switching
packet
Prior art date
Application number
PCT/CN2012/076345
Other languages
English (en)
French (fr)
Inventor
尹景鹏
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 WO2013044643A1 publication Critical patent/WO2013044643A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks

Definitions

  • the present invention relates to the field of communications, and in particular to a method and system for switching a packet service bus and a data exchange communication device.
  • a communication device includes a system and a terminal.
  • system communication equipment which are usually used to build the basic network of the communication network, which has high requirements for reliability.
  • the system communication equipment includes routers, switches, SDH equipment, wavelength division equipment and so on.
  • 1 is a schematic diagram of a communication device implementation framework according to the related art. It should be noted that although there are many types of system devices, the system implementation framework has great similarities. As shown in FIG. 1, system communication devices are usually exchanged. The board is built for the core.
  • the number of switch boards is different according to the system solution. Some systems may have only one switch board, some systems may have multiple switch boards, and each service board and each switch board have a backplane bus. interconnected. In addition to providing a larger switching capacity, a multi-switch board system also has a redundant backup relationship between different switch boards. If a switch board fails, the system automatically switches the services on the faulty switch board to other switch boards. Thereby avoiding the interruption of data services.
  • 2 is a schematic diagram of concurrent charging and receiving of a service board and a switching board service bus according to the related art. As shown in FIG. 2, the service board sends concurrently to all switch boards; the service board receives, and is preferred from all switch board service buses, that is, The service board is concurrent with the switch board.
  • FIG. 3 is a schematic diagram of a circuit-switched service board according to the related art. As shown in FIG. 3, each switch board sends a frame length equal to the service board, and the frame header is aligned. Based on the feature of circuit switching, the service board can be in the frame. The head position switches the switching board, and the switching at the frame head position does not destroy the payload. Therefore, lossless switching can be performed based on circuit switching.
  • FIG. 3 is a schematic diagram of a circuit-switched service board according to the related art. As shown in FIG. 3, each switch board sends a frame length equal to the service board, and the frame header is aligned. Based on the feature of circuit switching, the service board can be in the frame. The head position switches the switching board, and the switching at the frame head position does not destroy the payload. Therefore, lossless switching can be performed based on circuit switching.
  • FIG. 3 is a schematic diagram of a circuit-switched service board according to the related art. As shown in FIG. 3, each switch board send
  • FIG. 4 is a schematic diagram of the packet switching service board according to the related art. As shown in FIG. 4, the frame lengths sent by the switching boards to the service boards are not equal, and the frame header positions are also random. Board It is difficult to find a unified frame header switching switchboard, so the packet switched service bus will damage the service when it is switched. For service switching between packet switched switch boards, how to achieve lossless switching is called a problem in the industry.
  • the prior art provides a solution to this problem: The packet message can be first encapsulated into a circuit switched data frame, so that the circuit switched data frame is transmitted on the backplane service bus. In this way, the service bus lossless switching can be realized by utilizing the characteristics of circuit-switched frame header alignment.
  • the present invention provides a packet service bus switching method, system, and data exchange communication device, to at least solve the above-mentioned packet switching, which uses a packet packet to be encapsulated into a circuit-switched data frame to solve the implementation of lossless handover. problem.
  • a method for switching a packet service bus comprising: a service board notifying all switch boards to perform handover of a packet service bus; each of the switch boards receiving the After the notification, the sending of the service data is suspended, wherein, when the service data is suspended, the service data of each switch board is in a frame gap position; and the service board pauses in sending the service data during all the switch boards.
  • the switching to the packet service bus is completed.
  • the method further includes: recovering, by the each switch board, the service data after the timer set by the local timeout expires, wherein the timer starts timing after receiving the notification, where the timer The duration is not shorter than the time required for the packet service bus to switch.
  • the method further includes: after the handover is completed, triggering, by the service board, all the switching boards to resume sending the service data.
  • the sending of the service data by each of the switching boards after receiving the notification includes: after each switching board sends the service data packet currently being sent, suspending the sending of the service data, And storing the remaining service data to be sent to the service board.
  • a storage space for storing the service data to be sent to the service board is reserved on the switch board according to the length of time required for the packet service bus of the service board to be switched. The size of the storage space is proportional to the length of time required to switch the packet service bus.
  • a switching service system for a packet service bus comprising: a notification module, located on a service board, configured to notify all switch boards to switch a packet service bus; Each switch board is configured to suspend the transmission of service data after receiving the notification, The service data of each switch board is in a frame gap position when the service data transmission is suspended.
  • the switching module is located on the service board, and is configured to complete the pair during the suspension of the service data transmission by all the switch boards. Switching of the packet service bus.
  • the system further includes: a sending module, located on the switch board, configured to resume transmitting the service data after a locally set timer expires, wherein the timer starts timing after receiving the notification The duration of the timer is not shorter than the time required for the packet service bus to switch.
  • the system further includes: a triggering module, located on the service board, configured to trigger all the switching boards to resume sending the service data after the service board is completed.
  • the suspending module is further configured to suspend transmission of the service data after the switching board sends the service data packet currently being sent, and store the remaining service data to be sent to the service board.
  • a data exchange communication device including a service board and a plurality of switch boards, wherein the service board is configured to notify all switch boards to perform handover of a packet service bus;
  • the plurality of switch boards are configured to suspend the transmission of the service data after receiving the notification, wherein, when the service data is suspended, the service data of each switch board is in a frame gap position;
  • the setting is to complete the switching of the packet service bus during the suspension of the transmission of the service data by all of the switch boards.
  • FIG. 1 is a schematic diagram of a communication device implementation framework according to the related art
  • FIG. 2 is a schematic diagram of concurrent charging and receiving of a service board and a switching board service bus according to the related art
  • FIG. 3 is a circuit switching service according to the related art.
  • FIG. 6 is a structural block diagram of a handover system of a packet service bus according to an embodiment of the present invention; and
  • FIG. 7 is a data exchange communication according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of packet service bus switching in accordance with a preferred embodiment of the present invention
  • Figure 9 is a flow diagram of a packet service bus switching method in accordance with a preferred embodiment of the present invention
  • Figure 10 is a preferred embodiment in accordance with the present invention.
  • FIG. 11 is a schematic diagram of a HW bus according to another preferred embodiment of the present invention
  • FIG. 12 is a timing diagram of an HW bus according to another preferred embodiment of the present invention
  • FIG. 13 is another schematic diagram according to the present invention.
  • a method for switching a packet service bus is proposed.
  • packet data packets are transmitted on a service bus in packet switching, and a frame gap exists between adjacent data packets.
  • the embodiment of the present invention and the preferred embodiment thereof utilize the frame gap existing between adjacent data packets to perform packet service bus switching, that is, all the switching boards at the switching time point are in the frame gap position by a certain mechanism, and may be in the In the frame gap position, the service data is suspended, and the packet service bus is switched during the suspension of the transmission of the service data, thereby implementing lossless handover.
  • Step S502 A service board notifies all switch boards to perform handover of a packet service bus.
  • Step S504 After receiving the notification, each of the switching boards of all the switching boards suspends the sending of the service data. When the service data is suspended, the service data of each switching board is in the frame gap position.
  • Step S506 the service board completes the handover of the packet service bus during the period in which all the switching boards suspend the transmission of the service data.
  • each of the switching boards in all the switching boards pauses the transmission of the service data after receiving the notification, and when the service data is suspended, the service data of each switching board is in the frame.
  • the gap position completes the switching of the packet service bus during the pause transmission of the service data at the frame gap position, thereby achieving the effect of data lossless handover when performing packet switching.
  • the service data can be restored on each switch board in multiple manners, for example, the timing that can be locally set by each switch board.
  • the timer Recovering the transmission of the service data after the timer expires, and the timer starts the timer in time after receiving the packet service bus switching notification sent by the service board, and performs timing, wherein, in order to ensure that the packet service bus can be completed, then
  • the setting time of the timer should not be shorter than the time required for the packet service bus to switch.
  • the timing duration of the timer can be set only according to the switching condition, and the implementation is relatively simple. For another example, after the service board switch is completed, all the switch boards can be triggered to resume sending service data, where, but not limited to, by sending a completed packet service bus switch to each switch board, the completed notification or message, when each exchange When the board receives the notification or message, it triggers all switch boards to resume sending service data.
  • the service board sends to each switch board Since the way that the service board sends to each switch board is concurrent, this method is more reliable.
  • the service data packet currently being sent may be sent through each switch board, and then suspended.
  • the service data is sent, and the remaining service data to be sent to the service board is stored. This can guarantee to some extent that there is no loss in the data that has been sent and the data to be sent.
  • the duration required for the handover according to the packet service bus of the service board may be pre-predicted on each switch board.
  • a switching service system for a packet service bus is also provided, which is used to implement the foregoing embodiment and its preferred embodiments, and has not been described again.
  • Each module is described.
  • the term "module" may implement a combination of software and/or hardware of a predetermined function.
  • FIG. 6 is a structural block diagram of a switching service system of a packet service bus according to an embodiment of the present invention.
  • the system includes a notification module 60, a suspension module 62, and a switching module 64, and the following modules of the system and The function is explained.
  • the notification module 60 is located on the service board of the system, and is configured to notify all the switch boards to switch the packet service bus.
  • the pause module 62 is located on each switch board of the system and is configured to suspend the service after receiving the notification.
  • the data is sent, wherein, when the service data is suspended, the service data of each switch board is in a frame gap position; the switching module 64 is located on the service board of the system, and is set to suspend the service data during all the switch boards.
  • the switching to the packet service bus is completed.
  • the system further includes a sending module, located on the switching board of the system, configured to resume sending the service data after the locally set timer expires, wherein the timer starts timing after receiving the notification, and the duration of the timer is not Shorter than the time required for packet service bus switching.
  • the system further includes a triggering module, located on the service board of the system, configured to trigger all the switching boards to resume sending service data after the service board completes the handover.
  • FIG. 7 is a structural block diagram of a data exchange communication device according to an embodiment of the present invention. As shown in FIG. 7, the device includes a service board 70 and a plurality of switch boards 72. The components of the apparatus and their functions are described below.
  • the service board 70 is configured to notify all the switch boards to switch the packet service bus; the plurality of switch boards 72 are configured to suspend the transmission of the service data after receiving the notification, wherein, when the service data is suspended, each The service data of the switch board is in the frame gap position; 70 service boards are also set to complete the handover of the packet service bus during the time when all the switch boards suspend the transmission of service data.
  • all switching boards are in a frame gap position at the switching time point, and in the frame gap.
  • the location pauses the service data transmission to complete the switching of the packet service bus, thereby effectively solving the service loss problem caused by the service board switching the service bus between the different switching boards in the packet switching system, and realizing the packet service bus in the packet switching system.
  • Lossless switching. 8 is a schematic diagram of packet service bus switching in accordance with a preferred embodiment of the present invention, which is described below in conjunction with FIG.
  • the switch board in the preferred embodiment needs to have the following functions: (1) Storage function, each switch board can store packet data packets. It should be noted that although the existing switch board also has a storage function, the storage depth is very limited, and the storage board in this embodiment is stored. The storage depth of the function supports the pause time window that needs to meet the business board service bus switching requirements.
  • the switch board has a pause sending time window, and the window temporarily suspends sending the packet data packet to the service board.
  • the larger the storage capacity of the switch board the larger the setting depth of the pause window can be, ie, The larger the storage capacity of the switch board, the larger the set depth of the pause window, which means that more packets are stored.
  • Step S902 Set a switch board to suspend the sending time window. It should be noted that the window is not easy to set too short and is not easy to set too long. It is better to be able to just meet the business board switching time.
  • Step S904 the service board starts a system suspension mechanism, and notifies all switch boards to suspend sending service data.
  • Step S906 all the exchange boards receive the notification, and pause the window to send data.
  • Step S908 the service board completes the switching of the packet service bus in the pause window. Because all the switch boards are suspended in the pause window, and the time when the service board switches the packet service bus is just at the frame gap of all the switch boards, the service board in the packet switching system is effectively switched between different switch boards. The business interruption problem caused by the bus, thus achieving lossless switching.
  • FIG. 10 is a schematic diagram of packet service bus switching according to another preferred embodiment of the present invention. As shown in FIG. 10, a data exchange function is implemented on the premise that a communication device of the company is a packet switching device. As shown in Figure 10, there are two switch boards and six service boards in the system. The two switch boards are backed up by each other.
  • the Gigabit Ethernet SGMII bus is used to interconnect the switch board and the service board. After a series of processing in the board, it is uniformly converted into Gigabit Ethernet data packets and sent to two switching boards through the backplane SGMII bus. At the same time, the Gigabit Ethernet data packet forwarded by the two switching boards is received through the backplane SGMII bus, and is preferably processed all the way.
  • the HW bus is designed on the backplane. At the same time, two switch boards and six service boards are connected. The HW bus operates at a frequency of 8 MHz. All service boards and switch boards are divided into working slots, and HW slots of each service board are used.
  • a switch board is defined to suspend the transmit enable bit, and two switch boards monitor the enable bit in real time.
  • a business board for example, Service board 1 If it is planned to switch the switch board, the pause enable bit is turned on, the two switch boards can simultaneously check the pause command, and enable the pause send window, and the service board completes the packet service bus switch in the pause window.
  • the following takes the case of two switching boards and six service boards in the above system as an example, and the process of switching the packet service bus is as follows.
  • 11 is a schematic diagram of an HW bus according to another preferred embodiment of the present invention. As shown in FIG. 11, the HW bus includes three signal lines, which are an HW frame header, an HW clock signal line, and an HW data signal line, respectively.
  • the operating frequency is 2 MHz, a total of 32 time slots, and the HW frame header position corresponds to time slot 1, wherein 6 service boards and 2 Two switch boards are allocated 4 time slots, and each time slot of each service board is defined as a pause transmission bit. If the pause send bit is set to 1, the command switch board starts the pause send window; when the service board switches the switch board, the pause bit of the board is set to 1. The two switch boards monitor the HW bus status in real time. Once the pause bit of a board is found, the pause send window is started.
  • FIG. 13 is a schematic diagram of a pause window time in accordance with another preferred embodiment of the present invention, which will be described below in conjunction with FIG. T1:
  • the service board sets the pause send command at the time T1.
  • T2 The switch board detects the suspend transmission command sent by the service board at time T2.
  • the HW line has a working clock frequency of 2MHz, a total of 32 time slots, and an HW period of 125us, so the time interval between T2 and T1 is 125us.
  • T3 The switch board initiates a pause transmission time window at time T3.
  • the switch board may be sending packets at the T2 time point.
  • the backplane is a 1.25G SGMII bus, the maximum packet is 9600 bytes, and the maximum packet length is 76.8us.
  • the switch board needs to run a piece of software after the pause command is detected at the T2 time to start the send time window. This time is related to the processor performance and software efficiency of the switch board, usually no more than 5ms. Therefore, to meet the demand, the maximum time interval between T2 and T3 can be set to 5ms.
  • T4 The service board initiates the switch at time T4.
  • T5 The switch board ends the pause time send window at the T5 time point.
  • the service board usually adopts the intersection switch to realize the service bus switching, the physical switching time does not exceed lms, and 10 ms time between T4 and T5 can be satisfied. Therefore, once the switch board detects the pause command, it immediately starts the pause send time window, and the pause window is set to 10ms. The service board can wait for 6-8ms after setting the pause send command to perform bus switch.
  • a packet service bus switching software is also provided, which is used to implement the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium in which the above-described transmission delay control software is stored, including but not limited to an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the transmission of the service data is suspended after receiving the notification by using each of the switching boards of all the switching boards, and the service data of each switching board is suspended when the service data is suspended. All are in the frame gap position, and the packet service bus is switched during the pause transmission of the service data in the frame gap position, so that the data lossless switching effect is achieved when the packet exchange is performed.
  • 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 so 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 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 spirit and scope of the present invention are intended to be included within the scope of the present invention.

Landscapes

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

Abstract

本发明公开了一种分组业务总线的切换方法、系统及数据交换通信设备，该方法包括：业务板通知所有的交换板进行分组业务总线的切换；所有的交换板中每个交换板在接收到通知之后，均暂停业务数据的发送，其中，在暂停业务数据发送时，每个交换板的业务数据均处于帧间隙位置；业务板在所有的交换板暂停发送业务数据期间完成对分组业务总线的切换。通过本发明，实现了分组交换系统的无损切换。

Description

分组业务总线的切换方法、 系统及数据交换通信设备 技术领域 本发明涉及通信领域， 具体而言， 涉及一种分组业务总线的切换方法、 系统及数 据交换通信设备。 背景技术 现有技术中， 通讯设备包括系统和终端两部分。 系统通讯设备种类繁多， 通常用 于构建通讯网的基础网络， 对可靠性有较高要求， 通常系统通讯设备包括路由器、 交 换机、 SDH设备、 波分设备等等。 图 1是根据相关技术中的通讯设备实现框架示意图， 需要说明的是， 系统设备种 类虽然繁多， 但系统实现框架有很大的相似性， 如图 1所示， 系统通讯设备通常都是 以交换板为核心构建的， 交换板的数量根据系统方案而不相同， 有的系统可能只有一 块交换板，有的系统可能有多块交换板，各业务板和各交换板之间都有背板总线互联。 多交换板系统除了能够提供更大的交换容量外， 不同的交换板之间还形成冗余备份关 系， 如果一块交换板发生故障， 系统会把故障交换板上的业务自动倒换到其他交换板， 从而避免了数据业务的中断。 图 2是根据相关技术中的业务板和交换板业务总线并发优收示意图，如图 2所示， 业务板发送同时并发到所有交换板； 业务板接收， 从所有交换板业务总线中优选， 即， 业务板到交换板是并发， 所以切换交换板时该方向业务是无损的。 交换板到业务板， 业务板存在优收选择过程， 所以切换交换板时该方向业务有损伤。 在现有技术中， 交换分为电路交换和分组交换， 下面对电路交换和分组交换分别 进行说明。 图 3是根据相关技术中的电路交换业务板优收示意图， 如图 3所示， 各个交换板 发给业务板的帧长相等， 帧头对齐， 基于电路交换的这个特点， 业务板可以在帧头位 置切换交换板， 在帧头位置切换不破坏净荷， 因此， 基于电路交换可以做到无损切换。 图 4是根据相关技术中的分组交换业务板优收示意图， 如图 4所示， 各个交换板 发给业务板的帧长不相等， 帧头位置也是随机的， 由于分组交换的这个特点， 业务板 很难寻找一个统一的帧头位置切换交换板，因此分组交换业务总线切换时会损伤业务。 对于分组交换的交换板间的业务切换， 如何达到无损切换称为了业界的一个难题。 现有技术对此提供了一种解决方法： 可以采用把分组报文先封装到电路交换数据 帧中， 这样背板业务总线上传送电路交换数据帧。 通过这种方式， 可以利用电路交换 帧头对齐的特点来实现业务总线无损切换， 但是， 这种方法实现过程复杂， 成本高， 总体而言， 这种方案并不易于商用普及。 发明内容 本发明提供了一种分组业务总线的切换方法、 系统及数据交换通信设备， 以至少 解决上述分组交换中采用将分组报文封装到电路交换数据帧来解决无损切换所导致的 实现复杂的问题。 根据本发明的一个方面， 提供了一种分组业务总线的切换方法， 该方法包括： 业 务板通知所有的交换板进行分组业务总线的切换； 所有的交换板中每个交换板在接收 到所述通知之后， 均暂停业务数据的发送， 其中， 在暂停业务数据发送时， 所述每个 交换板的业务数据均处于帧间隙位置； 所述业务板在所述所有的交换板暂停发送业务 数据期间完成对分组业务总线的切换。 优选地， 该方法还包括： 所述每个交换板在本地设置的定时器超时后恢复发送所 述业务数据， 其中， 所述定时器在接收到所述通知之后启动计时， 所述定时器的时长 不短于所述分组业务总线切换所需的时间。 优选地， 该方法还包括： 所述业务板在切换完成之后， 触发所述所有的交换板恢 复发送所述业务数据。 优选地， 所述所有的交换板中每个交换板在接收到所述通知之后均暂停业务数据 的发送包括： 每个交换板发送完当前正在发送的业务数据包之后， 暂停业务数据的发 送， 并存储其余待向所述业务板发送的业务数据。 优选地， 根据所述业务板的分组业务总线进行切换所需的时长在所述每个交换板 上预留对应大小的用于存储待向所述业务板发送的业务数据的存储空间， 其中， 所述 存储空间的大小与所述分组业务总线进行切换所需的时长成正比。 根据本发明的另一个方面，还提供了一种分组业务总线的切换系统， 该系统包括: 通知模块， 位于业务板上， 设置为通知所有的交换板进行分组业务总线的切换； 暂停 模块， 位于每个交换板上， 设置为在接收到所述通知之后， 暂停业务数据的发送， 其 中， 在暂停业务数据发送时， 所述每个交换板的业务数据都处于帧间隙位置； 切换模 块， 位于所述业务板上， 设置为在所述所有的交换板暂停发送业务数据期间完成对分 组业务总线的切换。 优选地， 该系统还包括： 发送模块， 位于所述交换板上， 设置为在本地设置的定 时器超时后恢复发送所述业务数据， 其中， 所述定时器在接收到所述通知之后启动计 时， 所述定时器的时长不短于所述分组业务总线切换所需的时间。 优选地， 该系统还包括： 触发模块， 位于所述业务板上， 设置为在所述业务板在 切换完成之后， 触发所有的交换板恢复发送所述业务数据。 优选地，所述暂停模块还设置为在交换板发送完当前正在发送的业务数据包之后， 暂停所述业务数据的发送， 并存储其余待向所述业务板发送的业务数据。 根据本发明的再一个方面， 还提供了一种数据交换通信设备， 包括业务板和多个 交换板， 其中， 所述业务板， 设置为通知所有的交换板进行分组业务总线的切换； 所 述多个交换板， 设置为在接收到所述通知之后， 均暂停业务数据的发送， 其中， 在暂 停业务数据发送时， 每个交换板的业务数据均处于帧间隙位置； 所述业务板， 还设置 为在所述所有的交换板暂停发送业务数据期间完成对分组业务总线的切换。 通过本发明， 采用所有的交换板中每个交换板在接收到通知之后， 均暂停业务数 据的发送， 并且， 在暂停业务数据发送时， 每个交换板的业务数据均处于帧间隙位置， 在处于帧间隙位置的暂停发送业务数据期间， 完成分组业务总线的切换， 从而在进行 分组交换时， 达到了数据无损切换的效果。 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是根据相关技术中的通讯设备实现框架示意图； 图 2是根据相关技术中的业务板和交换板业务总线并发优收示意图； 图 3是根据相关技术中的电路交换业务板优收示意图； 图 4是根据相关技术中的分组交换业务板优收示意图; 图 5是根据本发明实施例的分组业务总线的切换方法的流程图； 图 6是根据本发明实施例的分组业务总线的切换系统的结构框图； 图 7是根据本发明实施例的数据交换通信设备的结构框图； 图 8是根据本发明优选实施例的分组业务总线切换的示意图； 图 9是根据本发明优选实施例的分组业务总线切换方法的流程图； 图 10是根据本发明优选另一实施例的分组业务总线切换示意图； 图 11是根据本发明另一优选实施例的 HW总线示意图； 图 12是根据本发明另一优选实施例的 HW总线时序示意图； 以及 图 13是根据本发明另一优选实施例的暂停窗口时间示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 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。 在以下实施例中提出了一种分组业务总线的切换方法， 由于在分组交换系统中， 分组交换中的业务总线上传送的是分组数据包， 相邻数据包之间存在帧间隙， 因此， 本发明实施例及其优选实施方式利用了相邻数据包之间存在的帧间隙来进行分组业务 总线切换， 即通过某种机制实现切换时间点上所有交换板都处于帧间隙位置， 可以在 处于该帧间隙位置时， 暂停发送业务数据， 在暂停发送业务数据期间来完成分组业务 总线的切换， 从而实现无损切换。 图 5是根据本发明实施例的分组业务总线的切换方法的流程图， 如图 5所示， 该 方法包括如下步骤： 步骤 S502, 业务板通知所有的交换板进行分组业务总线的切换。 步骤 S504, 所有的交换板中每个交换板在接收到通知之后， 均暂停业务数据的发 送， 其中， 在暂停业务数据发送时， 每个交换板的业务数据均处于帧间隙位置。 步骤 S506,业务板在所有的交换板暂停发送业务数据期间完成对分组业务总线的 切换。 通过本实施例的上述步骤， 采用所有的交换板中每个交换板在接收到通知之后， 均暂停业务数据的发送， 并且， 在暂停业务数据发送时， 每个交换板的业务数据均处 于帧间隙位置， 在处于帧间隙位置的暂停发送业务数据期间， 完成分组业务总线的切 换， 从而在进行分组交换时， 达到了数据无损切换的效果。 作为上述实施例的一个优选实施方式， 在业务板完成分组业务总线的切换之后， 可以通过多种方式来恢复每个交换板上发送业务数据， 例如， 可以通过每个交换板在 本地设置的定时器， 在定时器超时后恢复发送业务数据， 并且， 定时器在接收到业务 板发送的分组业务总线切换通知之后及时启动该定时器， 并进行计时， 其中， 为了保 证分组业务总线能够完成， 那么， 定时器的设置时长应该不短于分组业务总线切换所 需的时间。 这种实施方式， 只需根据切换的情况设置定时器的定时时长即可， 其实现 时比较简单。 又例如， 可以在业务板切换完成之后， 触发所有的交换板恢复发送业务数据， 其 中，可以但不限于通过向每个交换板发送完成分组业务总线切换已完成的通知或消息， 当每个交换板接收到该通知或消息时， 触发所有的交换板恢复发送业务数据。 由于业 务板向每个交换板发送的方式为并发， 因此， 这种方式实现比较可靠。 优选地，在所有的交换板中每个交换板接收到通知之后均暂停业务数据的发送时， 为了保证业务数据不损失， 可以通过每个交换板发送完当前正在发送的业务数据包之 后， 暂停业务数据的发送， 并存储其余待向业务板发送的业务数据。 这样可以在一定 程度上保证已经发送的数据和待发送的数据均没有损失。 作为本实施例的一种较优的实施方式，在存储其余待向业务板发送的业务数据时， 可以但不限于根据业务板的分组业务总线进行切换所需的时长在每个交换板上预留对 应大小的用于存储待向业务板发送的业务数据的存储空间， 其中， 存储空间的大小与 分组业务总线进行切换所需的时长成正比， 即， 分组业务总线切换的时间越长， 其所 需的存储空间越大。 通过存储数据保证在数据恢复发送时， 不损失暂停期间的业务数 据。 在本实施例中， 还提供了一种分组业务总线的切换系统， 该系统用于实现上述实 施例及其优选的实施方式， 已经进行过说明的不再赘述， 下面对该对该装置涉及的各 个模块进行说明。 如以下所使用的， 术语"模块"可以实现预定功能的软件和 /或硬件的 组合。 尽管以下实施例所描述的系统和方法较佳地以软件来实现， 但是硬件， 或者软 件和硬件的组合的实现也是可能并被构想的。 图 6是根据本发明实施例的分组业务总线的切换系统的结构框图， 如图 6所示， 该系统包括通知模块 60， 暂停模块 62和切换模块 64， 下面对该系统的各个模块及其 功能进行说明。 通知模块 60， 位于该系统的业务板上， 设置为通知所有的交换板进行分组业务总 线的切换； 暂停模块 62， 位于该系统的每个交换板上， 设置为在接收到通知之后， 暂 停业务数据的发送， 其中， 在暂停业务数据发送时， 每个交换板的业务数据都处于帧 间隙位置； 切换模块 64， 位于该系统的业务板上， 设置为在所有的交换板暂停发送业 务数据期间完成对分组业务总线的切换。 优选地， 该系统还包括发送模块， 位于该系统的交换板上， 设置为在本地设置的 定时器超时后恢复发送业务数据， 其中， 定时器在接收到通知之后启动计时， 定时器 的时长不短于分组业务总线切换所需的时间。 优选地， 该系统还包括触发模块， 位于该系统的业务板上， 设置为在业务板在切 换完成之后， 触发所有的交换板恢复发送业务数据。 优选地， 暂停模块 62还设置为在交换板发送完当前正在发送的业务数据包之后， 暂停业务数据的发送， 并存储其余待向业务板发送的业务数据。 图 7是根据本发明实施例的数据交换通信设备的结构框图， 如图 7所示， 该设备 包括业务板 70和多个交换板 72， 下面对该设备的各个部件及其功能进行说明。 业务板 70， 设置为通知所有的交换板进行分组业务总线的切换； 多个交换板 72， 设置为在接收到通知之后， 均暂停业务数据的发送， 其中， 在暂停业务数据发送时， 每个交换板的业务数据均处于帧间隙位置； 70业务板， 还设置为在所有的交换板暂停 发送业务数据期间完成对分组业务总线的切换。 下面结合优选实施例进行说明， 该优选实施例结合了上述实施例及其优选实施方 式， 在本优选实施例中， 通过在切换时间点上所有交换板都处于帧间隙位置， 并在该 帧间隙位置暂停业务数据发送来完成分组业务总线的切换， 从而有效地解决了分组交 换系统中业务板在不同交换板之间切换业务总线带来的业务损断问题， 实现了分组交 换系统中分组业务总线的无损切换。 图 8是根据本发明优选实施例的分组业务总线切换的示意图， 下面结合图 8对该 优选实施例进行说明。 需要说明的是， 本优选实施例中的交换板需要同时具备以下几个功能： ( 1 )存储功能， 每个交换板均能够存储分组数据包， 需要说明的是， 现有的交换 板虽然也具有存储的功能， 但存储深度非常有限， 在本实施例中的交换板的存储功能 的存储深度所支持暂停时间窗口需要满足业务板业务总线切换要求。
(2)暂停发送功能， 交换板具有暂停发送时间窗口， 该窗口内暂停向业务板发送 分组数据包， 理论上交换板的存储容量越大， 则暂停窗口的设置深度也可以越大， 即， 交换板的存储容量越大， 暂停窗口的设置深度也可以越大， 也就意味着存储的数据包 越多。
(3 )暂停机制， 系统内设计有暂停机制， 暂停机制一旦启动， 所有交换板同时启 动暂停发送窗口， 暂停向业务板发送， 暂停窗口时间逝去后再启动发送 图 9是根据本发明优选实施例的分组业务总线切换方法的流程图， 如图 9所示， 该流程包括如下步骤： 步骤 S902, 设置交换板暂停发送时间窗口， 需要说明的是， 该窗口不易设置过短 也不易设置过长， 以能够刚好满足业务板切换时间为好。 步骤 S904, 业务板启动系统暂停机制， 并通知所有交换板暂停发送业务数据。 步骤 S906, 所有交换板接收到该通知， 并暂停窗口发送数据。 步骤 S908, 业务板在暂停窗口内完成分组业务总线的切换。 由于在暂停窗口内所 有交换板暂停发送， 并且， 业务板切换分组业务总线的时间点刚好在所有交换板的帧 间隙位置， 有效地解决了分组交换系统中业务板在不同交换板之间切换业务总线带来 的业务损断问题， 从而实现了无损切换。 图 10是根据本发明优选另一实施例的分组业务总线切换示意图， 如图 10所示， 在公司某通讯设备为分组交换设备的前提下， 实现数据交换功能。 如图 10所示， 系统中有 2块交换板和 6块业务板， 两块交换板互为备份， 交换板 和业务板之间采用千兆以太网 SGMII总线互联，从业务板接入的业务在板内经过一系 列处理后统一转换成千兆以太网数据包， 并通过背板 SGMII总线并发给 2块交换板。 同时通过背板 SGMII总线接收 2块交换板转发过来的千兆以太网数据包，并优选一路 处理。 背板上设计有一条 HW总线， 同时连 2块交换板和 6块业务板， HW总线工作 频率为 8MHz， 为所有业务板和交换板都划分了工作时隙， 每块业务板的 HW时隙中 定义一个交换板暂停发送使能位， 2块交换板实时监测该使能位。 某块业务板（例如， 业务板 1 )如果计划切换交换板， 则打开暂停使能位， 2块交换板可以同时检查到暂停 命令， 并使能暂停发送窗口， 业务板在暂停窗口内完成分组业务总线切换。 下面以上述系统中有 2块交换板和 6块业务板为例， 对分组业务总线切换的过程 进行如下说明。 图 11是根据本发明另一优选实施例的 HW总线示意图， 如图 11所示， HW总线 包括 3根信号线， 分别是 HW帧头、 HW时钟信号线和 HW数据信号线。 图 12是根 据本发明另一优选实施例的 HW总线时序示意图， 如图 12所示， 工作频率为 2MHz， 共 32个时隙， HW帧头位置对应时隙 1， 其中， 6块业务板和 2两块交换板各分配 4 个时隙， 每块业务板各选一个时隙定义为暂停发送位。 如果该暂停发送位被设置为 1， 则命令交换板启动暂停发送窗口； 业务板切换交换板时， 则将本板的暂停位设为 1。 两块交换板实时监测 HW总线状态， 一旦发现某块单板的暂停位被置位， 则立刻启动 暂停发送窗口。 如果检测到暂停命令时交换板正在向业务板发送数据包， 则发送完后 立刻启动暂停发送窗口。 图 13是根据本发明另一优选实施例的暂停窗口时间示意图， 下面结合图 13对其进行说明。 T1 : 业务板在 T1时间点设置暂停发送命令。
T2: 交换板在 T2时间点检测到业务板下发的暂停发送命令。 HW线工作时钟频 率为 2MHz，共 32个时隙，一个 HW周期 125us，因此 T2和 T1之间时间间隔最大 125us。
T3 : 交换板在 T3时间点上启动暂停发送时间窗口。 交换板在 T2时间点上可能正 在发送数据包， 背板为 1.25G的 SGMII总线， 最大数据包为 9600字节， 发送完一包 数据最长用时 76.8us。同时交换板在 T2时间点检测到暂停命令后还需要运行一段软件 才能启动发送时间窗口， 这段时间和交换板所采用的处理器性能以及软件效率有关， 通常不会超过 5ms。 因此， 为了满足需求， T2和 T3之间最大时间间隔可设为 5ms。
T4: 业务板在 T4时间点启动切换。
T5: 交换板在 T5 时间点结束暂停时间发送窗口。 业务板通常采用交点开关实现 业务总线切换，物理切换时间不会超过 lms，T4和 T5之间预留 10ms时间即可以满足。 因此， 交换板一旦检测到暂停命令则立刻启动暂停发送时间窗口， 暂停窗口设为 10ms.业务板在设置暂停发送命令后等待 6-8ms后即可进行总线切换。 在另外一个实施例中， 还提供了一种分组业务总线切换软件， 该软件用于执行上 述实施例及优选实施例中描述的技术方案。 在另外一个实施例中， 还提供了一种存储介质， 该存储介质中存储有上述传输时 延控制软件， 该存储介质包括但不限于光盘、 软盘、 硬盘、 可擦写存储器等。 通过上述实施例及其优选实施例， 通过采用所有的交换板中每个交换板在接收到 通知之后， 均暂停业务数据的发送， 并且， 在暂停业务数据发送时， 每个交换板的业 务数据均处于帧间隙位置， 在处于帧间隙位置的暂停发送业务数据期间， 完成分组业 务总线的切换， 从而在进行分组交换时， 达到了数据无损切换的效果。 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。 凡在本发明的精神和原则之内， 所作的 任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种分组业务总线的切换方法， 包括：
业务板通知所有的交换板进行分组业务总线的切换；
所有的交换板中每个交换板在接收到所述通知之后， 均暂停业务数据的发 送， 其中， 在暂停业务数据发送时， 所述每个交换板的业务数据均处于帧间隙 位置；
所述业务板在所述所有的交换板暂停发送业务数据期间完成对分组业务总 线的切换。
2. 根据权利要求 1所述的方法， 其中， 还包括：
所述每个交换板在本地设置的定时器超时后恢复发送所述业务数据，其中， 所述定时器在接收到所述通知之后启动计时， 所述定时器的时长不短于所述分 组业务总线切换所需的时间。
3. 根据权利要求 1所述的方法， 其中， 还包括：
所述业务板在切换完成之后， 触发所述所有的交换板恢复发送所述业务数 据。
4. 根据权利要求 1至 3中任一项所述的方法， 其中， 所述所有的交换板中每个交 换板在接收到所述通知之后均暂停业务数据的发送包括：
每个交换板发送完当前正在发送的业务数据包之后，暂停业务数据的发送， 并存储其余待向所述业务板发送的业务数据。
5. 根据权利要求 4所述的方法， 其中， 根据所述业务板的分组业务总线进行切换 所需的时长在所述每个交换板上预留对应大小的用于存储待向所述业务板发送 的业务数据的存储空间， 其中， 所述存储空间的大小与所述分组业务总线进行 切换所需的时长成正比。
6. 一种分组业务总线的切换系统， 包括：
通知模块， 位于业务板上， 设置为通知所有的交换板进行分组业务总线的 切换； 暂停模块， 位于每个交换板上， 设置为在接收到所述通知之后， 暂停业务 数据的发送， 其中， 在暂停业务数据发送时， 所述每个交换板的业务数据都处 于帧间隙位置；
切换模块， 位于所述业务板上， 设置为在所述所有的交换板暂停发送业务 数据期间完成对分组业务总线的切换。 根据权利要求 6所述的系统， 其中， 还包括： 发送模块， 位于所述交换板上， 设置为在本地设置的定时器超时后恢复发 送所述业务数据， 其中， 所述定时器在接收到所述通知之后启动计时， 所述定 时器的时长不短于所述分组业务总线切换所需的时间。 根据权利要求 6所述的系统， 其中， 还包括：
触发模块， 位于所述业务板上， 设置为在所述业务板在切换完成之后， 触 发所有的交换板恢复发送所述业务数据。 根据权利要求 6至 8中任一项所述的系统， 其中， 所述暂停模块还设置为在交 换板发送完当前正在发送的业务数据包之后， 暂停所述业务数据的发送， 并存 储其余待向所述业务板发送的业务数据。 一种数据交换通信设备， 包括业务板和多个交换板，
所述业务板， 设置为通知所有的交换板进行分组业务总线的切换； 所述多个交换板，设置为在接收到所述通知之后，均暂停业务数据的发送， 其中， 在暂停业务数据发送时， 每个交换板的业务数据均处于帧间隙位置； 所述业务板， 还设置为在所述所有的交换板暂停发送业务数据期间完成对 分组业务总线的切换。
PCT/CN2012/076345 2011-09-30 2012-05-31 分组业务总线的切换方法、系统及数据交换通信设备 WO2013044643A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110302018.3 2011-09-30
CN201110302018.3A CN103036819B (zh) 2011-09-30 2011-09-30 分组业务总线的切换方法、系统及数据交换通信设备

Publications (1)

Publication Number Publication Date
WO2013044643A1 true WO2013044643A1 (zh) 2013-04-04

Family

ID=47994220

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/076345 WO2013044643A1 (zh) 2011-09-30 2012-05-31 分组业务总线的切换方法、系统及数据交换通信设备

Country Status (2)

Country Link
CN (1) CN103036819B (zh)
WO (1) WO2013044643A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103354523B (zh) * 2013-06-21 2017-07-07 新华三技术有限公司 一种交换机及无损切换方法
CN105471653A (zh) * 2015-12-09 2016-04-06 中国航空工业集团公司西安飞机设计研究所 一种机载双通道无缝切换方法及系统
CN108306704B (zh) * 2017-12-25 2019-10-29 北京格林伟迪科技股份有限公司 一种单总线msap的实现方法和装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101159525A (zh) * 2007-11-13 2008-04-09 上海华为技术有限公司 一种单板主备倒换的方法和系统以及一种单板
CN101277164A (zh) * 2008-05-15 2008-10-01 中兴通讯股份有限公司 一种同步数字体系业务总线无损切换的方法
CN101855624A (zh) * 2007-09-17 2010-10-06 苹果公司 用于减少功耗和总线活动的方法与装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101047622B (zh) * 2006-03-29 2010-05-12 华为技术有限公司 一种对系统资源进行调度的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101855624A (zh) * 2007-09-17 2010-10-06 苹果公司 用于减少功耗和总线活动的方法与装置
CN101159525A (zh) * 2007-11-13 2008-04-09 上海华为技术有限公司 一种单板主备倒换的方法和系统以及一种单板
CN101277164A (zh) * 2008-05-15 2008-10-01 中兴通讯股份有限公司 一种同步数字体系业务总线无损切换的方法

Also Published As

Publication number Publication date
CN103036819B (zh) 2017-10-27
CN103036819A (zh) 2013-04-10

Similar Documents

Publication Publication Date Title
JP5943221B2 (ja) ネットワークデバイスおよび情報送信方法
CN101079759B (zh) 分布式双向转发检测方法及设备
EP2724500B1 (en) Devices, systems and methods for run-time reassignment of a phy to mac devices interconnect
US20160036625A1 (en) Method and device for protecting service reliability and network virtualization system
TWI530124B (zh) 訊息事件損失後可自動回復之網路裝置與方法
WO2009023996A1 (fr) Procédé de mise en œuvre d'une interconnexion de réseau par l'intermédiaire d'une agrégation de liaisons
WO2012065337A1 (zh) 分布式实现lacp标准状态机的方法及系统
CN101753397B (zh) 一种以太环网快速自愈的系统、方法及设备
CN103200109B (zh) 一种ospf邻居关系管理方法和设备
WO2017000832A1 (zh) Mac地址的同步方法、装置及系统
WO2014106387A1 (zh) 建立控制通道的方法、转发设备和控制设备
US9166868B2 (en) Distributed control plane for link aggregation
WO2012006852A1 (zh) 传输同步状态信息的方法、系统和时钟板
WO2013044643A1 (zh) 分组业务总线的切换方法、系统及数据交换通信设备
CN102142999B (zh) 恢复链路的方法、设备和系统
CN101827035B (zh) 保证优雅重启的方法以及双主控网络设备
CN103916318A (zh) 一种单环网实现方法
CN111669220A (zh) RapidIO通信阻塞修复方法及系统
US20160020913A1 (en) Method for power saving in optical access network by using synchronized sleep cycle
CN113709068B (zh) 交换机系统和交换机的执行处理方法
KR101156097B1 (ko) 이더넷 파워링크에서의 마스터 이중화 방법
KR20140009488A (ko) 이더넷 노드의 검출 프레임 타임아웃 지속시간을 설정하는 방법 및 시스템
CN111224803A (zh) 一种堆叠系统中多主检测方法及堆叠系统
CN101582745B (zh) 一种防止数据包丢失的方法及路由器
WO2016197798A1 (zh) 一种实现配置同步的方法、虚拟机及备机

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: 12836059

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: 12836059

Country of ref document: EP

Kind code of ref document: A1