WO2014134903A1 - Communication device and active/standby switchover method thereof - Google Patents

Communication device and active/standby switchover method thereof Download PDF

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Publication number
WO2014134903A1
WO2014134903A1 PCT/CN2013/081561 CN2013081561W WO2014134903A1 WO 2014134903 A1 WO2014134903 A1 WO 2014134903A1 CN 2013081561 W CN2013081561 W CN 2013081561W WO 2014134903 A1 WO2014134903 A1 WO 2014134903A1
Authority
WO
WIPO (PCT)
Prior art keywords
main control
control board
port
line card
standby
Prior art date
Application number
PCT/CN2013/081561
Other languages
French (fr)
Chinese (zh)
Inventor
焦赵云
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 WO2014134903A1 publication Critical patent/WO2014134903A1/en

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Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2033—Failover techniques switching over of hardware resources
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2038—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant with a single idle spare processing component
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections

Definitions

  • a communication device (such as an OLT in an optical access device) is generally composed of a chassis, a standby board, a power card, a main control board, a line card, and an uplink board, wherein the task of the main control board is service Switching, aggregation, and centralized control, while line cards are responsible for the implementation of specific business needs or functions.
  • the main control board In order to improve the reliability of communication devices, the main control board often adopts an active/standby mechanism. In the active/standby mechanism, there are usually two main control boards, one for the main control board and one for the standby main control board.
  • the service control and service forwarding are switched to the standby main control board.
  • the status of the standby main control board changes to the active main control board, and the original main control board status changes to the standby main control board.
  • the service forwarding needs to be switched from the active main control board to the standby main control board.
  • the active/standby switchover is performed in the existing method, the MAC address learned on the downlink data online card needs to be cleared. The upstream and downstream data and service interruption time are longer during the standby switchover. The performance of the active/standby switchover is poor, and the user experience satisfaction is low.
  • the main technical problem to be solved by the present invention is to provide a communication device and an active/standby switching method thereof, which solves the problem that the uplink and downlink data and the service interruption time are long, and the performance of the active/standby switchover of the system is poor.
  • the problem of low satisfaction with experience the present invention provides a communication device, including a line card, an active main control board, and a standby main control board, wherein the line card passes through two ports and the main main control board and the standby respectively.
  • the main control board is connected;
  • the line card includes a switching detection module and a switching processing module;
  • the switching detection module is configured to detect whether an active/standby switching is triggered, and when detecting that the active/standby switching is triggered, to the switching processing module Sending a switching notification;
  • the switching processing module is configured to add a port connected to the main control board to the designated logical port group during initialization, so that downlink data is learned on the line card.
  • the source port of the MAC address is the logical port group, and after receiving the switching notification, the port connecting the line card to the active main control board is deleted from the logical port group, and A port connected to the standby main control board by the line card is added to the logical port group.
  • the switching processing module is further configured to: when the port connected to the main control board of the line card is added to the logical port group, set the working state of the port to normal transmission and reception, and The working state of the port connected to the standby main control board of the line card is set to be normally disabled; and the port connected to the main control board is also deleted from the logical port group. And setting the working state of the port to normal sending prohibition; and setting the port connected to the standby main control board to the logical port group when the line card is further added to the logical port group, The working status is set to normal transmission and reception.
  • the line card further includes a CPU, and the switching detection module sends the switching notification to the switching processing module by using the CPU.
  • the switching processing module is a switch chip or an ASIC chip or a network processing chip.
  • the logical port group is a TRUNK group.
  • the port is a SERDES interface or an SGMII interface or an SMII interface or an XAUI interface or an RXAUI interface or a KR interface or an XLAUI interface.
  • the present invention further provides an active/standby switching method for a communication device as described above, including: initializing, the line card adding a port connected to the main control board to a designated logical port group, The source port of the MAC address learned by the downlink data on the line card is the logical port group; the line card detects whether the active/standby switchover is triggered, and if yes, connects itself to the active main control board. The port is deleted from the logical port group, and a port itself connected to the standby main control board is added to the logical port group.
  • the line card after the line card adds the port connected to the main control board to the designated logical port group, the line card further includes the working state of the port as normal sending and receiving, and The working state of the port itself connected to the standby main control board is set to be normally disabled.
  • the line card deletes a port that is itself connected to the active main control board from the logical port group, and adds a port that is itself connected to the standby main control board.
  • the method further includes: setting, by the line card, a working state of a port connected to the main control board to a normal transmission prohibition; and connecting itself to the standby main control board The working state of the port is set to normal transmission and reception.
  • the member of the logical port group only has a port connected to the current main control board.
  • the communication device provided by the present invention comprises a line card, a main control board and a standby main control board, and the line card is respectively connected to the main control board and the standby main control board through two ports;
  • the line card adds the port connected to the main control board to the specified logical port group (for example, the TRUNK group), so that the source port of the learned MAC address on the downlink data card is the logical port group; when the line card detects After the master/slave switchover occurs, remove the port that is connected to the active main control board from the logical port group, and add the port that is connected to the standby main control board to the logical port group.
  • the MAC address of the port connected to the control board greatly reduces the interruption of uplink and downlink data and services during the switching process. Basically, non-destructive switching can be achieved, which improves the performance of the system's active/standby switchover and improves user experience satisfaction.
  • FIG. 1 is a schematic structural diagram of a communication device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a line card in FIG. 1
  • FIG. 3 is a schematic diagram of an active/standby switching process according to an embodiment of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION the present invention will be described in detail with reference to the accompanying drawings. 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.
  • 1 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in FIG. 1, the communication device includes a line card, a main control board, and a standby main control board. The following describes each part.
  • the active main control board and the standby main control board are opposite in this embodiment, that is, when a main control board is used as the main control board at a certain moment, after the active/standby switchover The main control board is switched to the standby main control board, and the original standby main control board is switched to the main control board.
  • the line card in this embodiment is connected to the active main control board and the standby main control board through two ports respectively; the port in this embodiment may be a SERDES interface or an SGMII interface or an SMII interface or an XAUI interface or an RXAUI interface or a KR interface or XLAUI interface.
  • the data sent by the line card to the two main control boards can be identical, so that the MAC address of the line card can be learned on the main and standby main control boards, thereby speeding up the switching speed.
  • 2 is a schematic structural view of the line card of FIG. 1. The following is a detailed description of each part of the line card.
  • the line card in this embodiment includes a switching detection module and a switching processing module.
  • the module can be implemented by the hardware of the line card, and is configured to detect whether the active/standby switchover is triggered, and when the active/standby switchover is triggered, the switchover notification is sent to the switch processing module.
  • the line card further includes a CPU, and the switchover detection is performed.
  • the module can send a switching notification through the CPU of the line card.
  • the specific process is as follows: After the line card hardware detects that the active/standby identification signal has changed, it determines that the active/standby switching has been triggered, and then generates a hardware interrupt signal to notify the CPU of the line card; The CPU then sends a switching notification to the switching processing module through the interrupt service program or the interrupt processing task to notify the switching processing module to switch the members of the logical port group.
  • the switching processing module in this embodiment may be a switch chip or an ASIC chip or a network.
  • the line card is specifically connected to the main and standby main control boards by the two ports of the switching processing module
  • the switching processing module is configured to add the port connected to the main control board to the designated logical port group during initialization, so that the source port of the learned MAC address on the downlink data card is the logical port group.
  • the physical port group in this implementation may be the TRUNK group of the switching processing module.
  • the TRUNK group the MAC address is learned without the relevant information of the physical port; and the line card is set to receive the switching notification.
  • the port connected to the active main control board is deleted from the logical port group, and the port connected to the standby main control board (that is, the switched new active main control board) is added to the logical port group.
  • the switching of the members of the logical port group is implemented; the member of the logical port group in this embodiment is unique, that is, the port connected to the current main control board.
  • the port connected to the current main control board is added to the logical port group, and the source port of the learned MAC address on the downlink data card is the logical port group, which is not existing. Physical port, you only need to switch the members of the logical port group during the switching process. You do not need to clear the MAC address of the port connected to the main control board. The time for interrupting the uplink and downlink data and services during the switching process is greatly reduced.
  • non-destructive switching can be achieved, which improves the performance of the system's active/standby switchover, thereby improving the satisfaction of the user experience.
  • the switching processing module is further configured to: when the port connected to the main control board of the line card is added to the logical port group, set the working state of the port to normal sending and receiving, and connect the line card to the standby main control board.
  • the working status of the port is set to be normal forbidden; this setting allows the line card to send data to the main control board normally, and can also receive the data sent to the main control board normally, and at the same time, The line card sends data to the standby main control board normally.
  • the switch processing module is also configured to delete the working port of the port from the logical port group when the line card is disconnected from the original main control board.
  • the control board has been switched to the standby main control board. This setting can make the main control board unable to send data to the line card effectively. It is also set to connect the line card to the new main control board (that is, the original standby main control board).
  • the working state of the port is set to be normal. Because the main control board has been switched to the active main control board, the line card needs to send data to the main control board normally.
  • the standby main control board can receive the data sent by the line card as the main control board normally. Therefore, the MAC address table is in the normal refresh state.
  • the standby master After the control board is switched to the main control board, the Layer 2 can forward the traffic immediately, and the traffic can reach the line card. The previous main control board has been switched to the standby main control board, and the traffic cannot reach the line card.
  • the present invention is further described by taking a logical port group as a TRUNK group as an example, and the method flow is further described in the following. FIG.
  • Step S301 The line card is connected to the main and standby main control boards: the two ports of the line card through the switching processing module (for example, the switching chip) are respectively connected to the main and standby main control boards, wherein, The main control board and the line card can send and receive packets normally.
  • the standby main control board can receive the packets sent by the line card normally, but the line card discards all the packets sent by the standby main control board.
  • Step S302 Main, Data synchronization of the standby main control board: This step is to synchronize the data sent by the line card to the active main control board to the standby main board, which can be implemented by mirroring, port bitmap redirection or flooding, etc. Preferably, the mirroring or port port bitmap redirection is implemented;
  • the physical port is not the same; at the same time, the working state of the port connecting the line card and the main control board is set to normal transmission and reception, that is, the line card can normally send data to the main control board, and can also receive the main service normally.
  • the data sent by the board is discarded.
  • Step S304 Detect whether the active/standby switchover is triggered.
  • step S305 If yes, go to step S305; otherwise, continue to detect; detect whether the active/standby switchover is triggered, and specifically check whether the active/standby identification signal occurs through the line card hardware.
  • the change is implemented. If a change occurs, it indicates that the master/slave switchover is triggered.
  • the line card hardware generates a hardware interrupt signal to notify the CPU of the line card, and the line card CPU passes the interrupt service routine or interrupts.
  • Delete, and set the working status of the port to normal transmission prohibition add the line card to the TRUNK group connected to the main control board used by the standby switch, and set the working status of the port to normal transmission and reception.
  • the standby main control board can receive the data sent by the line card as the main control board. Therefore, the MAC address table is in the normal refresh state.
  • the standby main control board switches to the main control board. After that, the Layer 2 can forward the traffic immediately, and the traffic can reach the line card. The previous main control board has been switched to the standby main control board, and its traffic cannot reach the line card.
  • the solution provided by the present invention can greatly reduce the service interruption time in the active/standby switching process of the communication device without increasing the cost of the device, improve the performance of the active/standby switchover of the system, and further improve the satisfaction of the user service experience.

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  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
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  • Quality & Reliability (AREA)
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Abstract

Provided are a communication device and active/standby switchover method thereof, the communication device comprising a line card, an active main control board, and a standby main control board. The line card is connected to the active main control board and the standby main control board respectively via two ports; the line card comprises a switchover detection module and a switchover processing module; the switchover detection module is configured to detect whether an active/standby switchover is triggered, and transmit a switchover notification to the switchover processing module upon the detection of the trigger of the active/standby switchover; the switchover processing module is configured to add, during initialization, the port connecting the line card to the active main control board into a specified logical port group, such that the source port of an MAC address learned by the downlink data on the line card is the logical port group; and the switchover processing module is configured to delete the port connecting the line card to the active main control board from the logical port group upon receipt of the switchover notification, and add the port connecting the line card to the standby main control board into the logical port group. The present invention greatly improves user satisfaction for service experience.

Description

一种通信设备及其主备倒换方法 技术领域 本发明涉及通信领域， 具体涉及一种通信设备及其主备倒换方法。 背景技术 通信设备（比如光接入设备中的 OLT等）一般是由机框、备板、 电源卡、主控板、 线卡以及上联板组成的， 其中主控板承担的任务是业务的交换、 汇聚以及集中控制， 而线卡则承担具体的业务需求或功能的实现。 为了提高通讯设备的可靠性， 主控板往往采用主备机制。 在主备机制中通常有两 块主控板， 一块为主用主控板， 一块为备用主控板， 当主用主控板出现故障时， 业务 控制和业务转发倒换到备用主控板， 此时备用主控板的状态变为主用主控板， 而原来 的主用主控板状态变为备用主控板。 在主备倒换的过程中， 业务转发需由主用主控板 切换到备用主控板， 采用现有的方法进行主备倒换时， 需要清除下行数据在线卡上学 习到的 MAC地址， 导致主备倒换时上下行数据和业务中断时间较长， 系统主备倒换 的性能差， 用户体验的满意度低。 发明内容 本发明要解决的主要技术问题是， 提供一种通信设备及其主备倒换方法， 解决现 有主备倒换时上下行数据和业务中断时间较长， 系统主备倒换的性能差， 用户体验的 满意度低的问题。 为解决上述技术问题， 本发明提供一种通信设备,包括线卡、 主用主控板、 备用主 控板， 所述线卡通过两个端口分别与所述主用主控板和所述备用主控板连接； 所述线 卡包括倒换检测模块、 倒换处理模块； 所述倒换检测模块设置为检测是否触发了主备 倒换， 并在检测到触发了主备倒换时， 向所述倒换处理模块发送倒换通知； 所述倒换 处理模块设置为在初始化时， 将所述线卡与所述主用主控板连接的端口加入指定的逻 辑端口组， 使下行数据在所述线卡上学习到的 MAC地址的源端口为所述逻辑端口组， 以及设置为收到所述倒换通知后， 将所述线卡与所述主用主控板连接的端口从所述逻 辑端口组中删除， 并将所述线卡与所述备用主控板连接的端口添加到所述逻辑端口组 中。 优选地， 所述倒换处理模块还设置为将所述线卡与所述主用主控板连接的端口加 入所述逻辑端口组时， 将该端口的工作状态设为正常收发， 并将所述线卡与所述备用 主控板连接的端口的工作状态设为正常发禁止收； 以及还设置为将所述线卡与所述主 用主控板连接的端口从所述逻辑端口组删除时， 将该端口的工作状态设为正常发禁止 收； 以及还设置为将所述线卡与所述备用主控板连接的端口添加到所述逻辑端口组中 时， 还设置为将该端口的工作状态设为正常收发。 在本发明的一种实施例中， 所述线卡还包括 CPU, 所述倒换检测模块通过所述 CPU向所述倒换处理模块发送所述倒换通知。 在本发明的一种实施例中， 所述倒换处理模块为交换芯片或 ASIC芯片或网络处 理芯片。 在本发明的一种实施例中， 所述逻辑端口组为 TRUNK组。 在本发明的一种实施例中， 所述端口为 SERDES接口或 SGMII接口或 SMII接口 或 XAUI接口或 RXAUI接口或 KR接口或 XLAUI接口。 为了解决上述问题，本发明还提供了如上所述的通信设备的主备倒换方法，包括: 初始化， 所述线卡将自身与所述主用主控板连接的端口加入指定的逻辑端口组， 使下 行数据在所述线卡上学习到的 MAC地址的源端口为所述逻辑端口组； 所述线卡检测 是否触发了主备倒换， 如是， 将自身与所述主用主控板连接的端口从所述逻辑端口组 中删除， 并将自身与所述备用主控板连接的端口添加到所述逻辑端口组中。 在本发明的一种实施例中， 所述线卡将自身与所述主用主控板连接的端口加入指 定的逻辑端口组后， 还包括将该端口的工作状态设为正常收发， 并将自身与所述备用 主控板连接的端口的工作状态设为正常发禁止收。 在本发明的一种实施例中， 所述线卡将自身与所述主用主控板连接的端口从所述 逻辑端口组中删除， 并将自身与所述备用主控板连接的端口添加到所述逻辑端口组中 后， 还包括： 所述线卡将自身与所述主用主控板连接的端口的工作状态设为正常发禁止收； 以 及将自身与所述备用主控板连接的端口的工作状态设为正常收发。 在本发明的一种实施例中， 所述逻辑端口组的成员只有所述线卡与当前为主用主 控板连接的端口。 本发明的有益效果是: 本发明提供的通信设备包括线卡、 主用主控板、 备用主控板， 线卡通过两个端口 分别与主用主控板和备用主控板连接； 初始化时， 线卡将自身与主用主控板连接的端 口加入指定的逻辑端口组（例如 TRUNK组）， 使下行数据在线卡上学习到的 MAC地 址的源端口为逻辑端口组； 当线卡检测到发生了主备倒换后， 将自身与主用主控板连 接的端口从逻辑端口组中删除， 并将自身与备用主控板连接的端口添加到逻辑端口组 中，此时原主用主控板就成为备用主控板， 而原备用主控板则成为当前的主用主控板； 由于本发明将线卡与当前作为主用主控板连接的端口添加到逻辑端口组中， 下行数据 在线卡上学习到的 MAC地址的源端口为该逻辑端口组， 并非现有的物理端口， 在倒 换过程只需倒换该逻辑端口组的成员即可， 无需清除线卡与主用主控板连接端口的 MAC地址，使上下行数据和业务在倒换过程中中断的时间大大减小，基本可以达到无 损倒换， 提高了系统主备倒换的性能， 进而提高了用户体验的满意度。 附图说明 图 1为本发明一种实施例的通信设备结构示意图； 图 2为图 1中线卡的结构示意图； 图 3为本发明一种实施例的主备倒换流程示意图。 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。 图 1为本发明一种实施例的通信设备结构示意图， 如图 1所示， 该通信设备包括 线卡、 主用主控板、 备用主控板， 下面对各部分进行说明。 值得注意的是， 本实施例中的主用主控板和备用主控板都是相对的， 即， 在某一 时刻， 某一主控板为主用主控板时， 在主备倒换后， 该主控板则会切换为备用主控板， 而原来的备用主控板则切换为主用主控板。 本实施中的线卡通过两个端口分别与主用 主控板和备用主控板连接； 本实施例中的端口可以为 SERDES接口或 SGMII接口或 SMII接口或 XAUI接口或 RXAUI接口或 KR接口或 XLAUI接口。在本实施例中，线 卡发送到两个主控板的数据可以完全相同， 以使主、 备主控板上都能学习到线卡的 MAC地址， 从而可以加快倒换速度。 图 2为图 1中线卡的结构示意图， 下面对该线卡各部分进行详细说明， 如图 2所 示， 优选地， 本实施例中的线卡包括倒换检测模块、 倒换处理模块； 倒换检测模块可 由线卡的硬件实现， 设置为检测是否触发了主备倒换， 并在检测到触发了主备倒换时， 向倒换处理模块发送倒换通知； 优选地， 线卡还可进一步包括 CPU, 倒换检测模块可 通过线卡的 CPU发送倒换通知， 具体过程如下： 线卡硬件检测到主备标识信号发生变 化后， 则判定主备倒换已经触发， 进而产生硬件中断信号通知线卡的 CPU; 线卡的 CPU再通过中断服务程序或中断处理任务向倒换处理模块发送倒换通知， 以通知倒换 处理模块对逻辑端口组的成员进行倒换； 本实施例中的倒换处理模块具体可为交换芯 片或 ASIC芯片或网络处理芯片， 线卡具体通过倒换处理模块的两个端口分别与主、 备主控板连接； 倒换处理模块设置为在初始化时， 将线卡与主用主控板连接的端口加 入指定的逻辑端口组， 使下行数据在线卡上学习到的 MAC地址的源端口为所述逻辑 端口组， 并非物理端口； 本实施中的逻辑端口组可以为倒换处理模块的 TRUNK组， 在 TRUNK组中学习到得 MAC地址并无物理端口的相关信息； 以及设置为收到倒换 通知后， 将线卡与主用主控板连接的端口从逻辑端口组中删除， 并将线卡与备用主控 板 （也即切换后的新主用主控板） 连接的端口添加到所述逻辑端口组中， 也即实现逻 辑端口组成员的倒换； 本实施例中的逻辑端口组成员是唯一的， 也即为线卡与当前为 主用主控板连接的端口。 可见， 由于本实施例将线卡与当前作为主用主控板连接的端 口添加到逻辑端口组中， 下行数据在线卡上学习到的 MAC地址的源端口为该逻辑端 口组， 并非现有的物理端口， 在倒换过程只需倒换该逻辑端口组的成员即可， 无需清 除线卡与主用主控板连接端口的 MAC地址， 使上下行数据和业务在倒换过程中中断 的时间大大减小， 基本可以达到无损倒换， 提高了系统主备倒换的性能， 进而提高了 用户体验的满意度。 优选地， 倒换处理模块还设置为将线卡与主用主控板连接的端口加入逻辑端口组 时， 将该端口的工作状态设为正常收发， 并将线卡与所述备用主控板连接的端口的工 作状态设为正常发禁止收； 这样的设置可使线卡正常的向主用主控板发送数据， 也可 正常的接收主用主控板向其发送的数据， 同时， 可使线卡正常的向备用主控板发送数 据， 但对于备用主控板发送的数据， 则直接丢弃， 以保证线卡上只有一份数据。 倒换 处理模块在主备倒换过程中， 还设置为将线卡与原主用主控板连接的端口从逻辑端口 组删除时， 将该端口的工作状态设为正常发禁止收， 因为此时该主控板已经切换为备 用主控板， 该设置可使该主控板不能有效的发送数据到线卡； 以及还设置为将线卡与 新主用主控板 （也即原备用主控板） 连接的端口添加到所述逻辑端口组中时， 将该端 口的工作状态设为正常收发， 因为该主控板当前已经切换为主用主控板， 线卡需正常 向该主控板发送数据以及接收该主控板发送的数据。 基于上述分析可知， 本实施中， 由于备用主控板也能向主用主控板一样正常接收 到线卡发送的数据， 因此 MAC地址表处于正常刷新状态， 在主备倒换过程中， 备用 主控板切换为主用主控板后， 二层可以立即进行转发， 流量可以达到线卡； 而之前的 主用主控板由于已经切换为备用主控板， 其流量不能到达线卡。 为了更好的理解本发明， 下面以逻辑端口组为 TRUNK组为例， 结合完成的方法 流程对本发明进行进一步的说明， 图 3为本发明一种实施例的主备倒换流程示意图， 下面对该流程各部分进行说明： 步骤 S301 : 线卡与主、 备主控板连接： 线卡通过其倒换处理模块（例如交换芯片）的两个端口分别与主、 备主控板连接， 其中， 设置主用主控板与线卡之间可以正常收发包， 备用主控板可以正常接收到线卡 发来的包， 但是线卡则将备用主控板发送的包全部丢弃； 步骤 S302: 主、 备主控板数据同步： 该步骤是将线卡发送给主用主控板的数据同步到备用主用板， 具体可通过镜像、 按端口位图重定向或洪泛等方法实现； 本实施例中优选通过镜像或按端口位图重定向 实现； 步骤 S303: 线卡初始化： 该步骤涉及线卡代码初始化， 初始化时， 线卡检测主、 备主控板的槽位 （也即端 口）， 将线卡与主用主控板连接的端口添加到预先分配好的 TRUNK组中， 使下行的数 据在线卡上学习到得 MAC地址的源端口为 TRUNK组， 而不是的物理端口； 同时， 将线卡与主用主控板连接的端口的工作状态设置为正常收发， 即线卡既能正常的向主 用主控板发送数据， 也能正常的接收主用主控板向其发送的数据； 将线卡与备用主用 板连接的端口的工作状态设置为正常发禁止收， 即线卡可正常的向备用主控板发送数 据， 但需将备用主控板向其发送的数据丢弃； 步骤 S304: 检测是否触发主备倒换， 如是， 转至步骤 S305; 否则， 继续检测； 检测是否触发主备倒换， 具体可通过线卡硬件检测主备标识信号是否发生了变化 实现， 如发生了变化， 则表明触发主备倒换， 线卡硬件产生硬件中断信号通知线卡的 CPU, 线卡 CPU再通过中断服务程序或中断处理任务通知线卡的倒换处理模块倒换 TRUNK组的成员； 步骤 S305: 进行主备倒换： 线卡的主备倒换处理模块收到线卡的 CPU发送的倒换通知后，则将线卡与由主用 切换为备用的主控板连接的端口从 TRUNK组中删除， 并将该端口的工作状态设置为 正常发禁止收；将线卡与由备用切换为主用的主控板连接的端口添加到 TRUNK组中， 并将该端口的工作状态设置为正常收发。 由于备用主控板也能向主用主控板一样正常接收到线卡发送的数据， 因此 MAC 地址表处于正常刷新状态， 在主备倒换过程中， 备用主控板切换为主用主控板后， 二 层可以立即进行转发， 流量可以达到线卡； 而之前的主用主控板由于已经切换为备用 主控板， 其流量不能到达线卡。 可见， 本发明提供的方案可在不增加设备成本的前提下， 大大减少通信设备主备 倒换过程中业务中断的时间， 提高系统主备倒换的性能， 进而提升用户业务体验的满 意度。 以上内容是结合具体的实施方式对本发明所作的进一步详细说明， 不能认定本发 明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通技术人员来说， 在 不脱离本发明构思的前提下， 还可以做出若干简单推演或替换， 都应当视为属于本发 明的保护范围。 TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a communications device and an active/standby switching method thereof. A communication device (such as an OLT in an optical access device) is generally composed of a chassis, a standby board, a power card, a main control board, a line card, and an uplink board, wherein the task of the main control board is service Switching, aggregation, and centralized control, while line cards are responsible for the implementation of specific business needs or functions. In order to improve the reliability of communication devices, the main control board often adopts an active/standby mechanism. In the active/standby mechanism, there are usually two main control boards, one for the main control board and one for the standby main control board. When the main control board fails, the service control and service forwarding are switched to the standby main control board. The status of the standby main control board changes to the active main control board, and the original main control board status changes to the standby main control board. During the active/standby switchover, the service forwarding needs to be switched from the active main control board to the standby main control board. When the active/standby switchover is performed in the existing method, the MAC address learned on the downlink data online card needs to be cleared. The upstream and downstream data and service interruption time are longer during the standby switchover. The performance of the active/standby switchover is poor, and the user experience satisfaction is low. SUMMARY OF THE INVENTION The main technical problem to be solved by the present invention is to provide a communication device and an active/standby switching method thereof, which solves the problem that the uplink and downlink data and the service interruption time are long, and the performance of the active/standby switchover of the system is poor. The problem of low satisfaction with experience. In order to solve the above technical problem, the present invention provides a communication device, including a line card, an active main control board, and a standby main control board, wherein the line card passes through two ports and the main main control board and the standby respectively. The main control board is connected; the line card includes a switching detection module and a switching processing module; the switching detection module is configured to detect whether an active/standby switching is triggered, and when detecting that the active/standby switching is triggered, to the switching processing module Sending a switching notification; the switching processing module is configured to add a port connected to the main control board to the designated logical port group during initialization, so that downlink data is learned on the line card. The source port of the MAC address is the logical port group, and after receiving the switching notification, the port connecting the line card to the active main control board is deleted from the logical port group, and A port connected to the standby main control board by the line card is added to the logical port group. Preferably, the switching processing module is further configured to: when the port connected to the main control board of the line card is added to the logical port group, set the working state of the port to normal transmission and reception, and The working state of the port connected to the standby main control board of the line card is set to be normally disabled; and the port connected to the main control board is also deleted from the logical port group. And setting the working state of the port to normal sending prohibition; and setting the port connected to the standby main control board to the logical port group when the line card is further added to the logical port group, The working status is set to normal transmission and reception. In an embodiment of the present invention, the line card further includes a CPU, and the switching detection module sends the switching notification to the switching processing module by using the CPU. In an embodiment of the invention, the switching processing module is a switch chip or an ASIC chip or a network processing chip. In an embodiment of the invention, the logical port group is a TRUNK group. In an embodiment of the present invention, the port is a SERDES interface or an SGMII interface or an SMII interface or an XAUI interface or an RXAUI interface or a KR interface or an XLAUI interface. In order to solve the above problem, the present invention further provides an active/standby switching method for a communication device as described above, including: initializing, the line card adding a port connected to the main control board to a designated logical port group, The source port of the MAC address learned by the downlink data on the line card is the logical port group; the line card detects whether the active/standby switchover is triggered, and if yes, connects itself to the active main control board. The port is deleted from the logical port group, and a port itself connected to the standby main control board is added to the logical port group. In an embodiment of the present invention, after the line card adds the port connected to the main control board to the designated logical port group, the line card further includes the working state of the port as normal sending and receiving, and The working state of the port itself connected to the standby main control board is set to be normally disabled. In an embodiment of the present invention, the line card deletes a port that is itself connected to the active main control board from the logical port group, and adds a port that is itself connected to the standby main control board. After the logical port group is configured, the method further includes: setting, by the line card, a working state of a port connected to the main control board to a normal transmission prohibition; and connecting itself to the standby main control board The working state of the port is set to normal transmission and reception. In an embodiment of the present invention, the member of the logical port group only has a port connected to the current main control board. The invention has the following advantages: The communication device provided by the present invention comprises a line card, a main control board and a standby main control board, and the line card is respectively connected to the main control board and the standby main control board through two ports; The line card adds the port connected to the main control board to the specified logical port group (for example, the TRUNK group), so that the source port of the learned MAC address on the downlink data card is the logical port group; when the line card detects After the master/slave switchover occurs, remove the port that is connected to the active main control board from the logical port group, and add the port that is connected to the standby main control board to the logical port group. It becomes the standby main control board, and the original standby main control board becomes the current main control main board; since the present invention adds the line card to the port currently connected as the main main control board to the logical port group, the downlink data is online. The source port of the MAC address learned on the card is the logical port group. It is not an existing physical port. You only need to switch the members of the logical port group during the switching process. You do not need to clear the line card and the active host. The MAC address of the port connected to the control board greatly reduces the interruption of uplink and downlink data and services during the switching process. Basically, non-destructive switching can be achieved, which improves the performance of the system's active/standby switchover and improves user experience satisfaction. 1 is a schematic structural diagram of a communication device according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a line card in FIG. 1; FIG. 3 is a schematic diagram of an active/standby switching process according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 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. 1 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in FIG. 1, the communication device includes a line card, a main control board, and a standby main control board. The following describes each part. It should be noted that the active main control board and the standby main control board are opposite in this embodiment, that is, when a main control board is used as the main control board at a certain moment, after the active/standby switchover The main control board is switched to the standby main control board, and the original standby main control board is switched to the main control board. The line card in this embodiment is connected to the active main control board and the standby main control board through two ports respectively; the port in this embodiment may be a SERDES interface or an SGMII interface or an SMII interface or an XAUI interface or an RXAUI interface or a KR interface or XLAUI interface. In this embodiment, the data sent by the line card to the two main control boards can be identical, so that the MAC address of the line card can be learned on the main and standby main control boards, thereby speeding up the switching speed. 2 is a schematic structural view of the line card of FIG. 1. The following is a detailed description of each part of the line card. As shown in FIG. 2, the line card in this embodiment includes a switching detection module and a switching processing module. The module can be implemented by the hardware of the line card, and is configured to detect whether the active/standby switchover is triggered, and when the active/standby switchover is triggered, the switchover notification is sent to the switch processing module. Preferably, the line card further includes a CPU, and the switchover detection is performed. The module can send a switching notification through the CPU of the line card. The specific process is as follows: After the line card hardware detects that the active/standby identification signal has changed, it determines that the active/standby switching has been triggered, and then generates a hardware interrupt signal to notify the CPU of the line card; The CPU then sends a switching notification to the switching processing module through the interrupt service program or the interrupt processing task to notify the switching processing module to switch the members of the logical port group. The switching processing module in this embodiment may be a switch chip or an ASIC chip or a network. Processing the chip, the line card is specifically connected to the main and standby main control boards by the two ports of the switching processing module The switching processing module is configured to add the port connected to the main control board to the designated logical port group during initialization, so that the source port of the learned MAC address on the downlink data card is the logical port group. The physical port group in this implementation may be the TRUNK group of the switching processing module. In the TRUNK group, the MAC address is learned without the relevant information of the physical port; and the line card is set to receive the switching notification. The port connected to the active main control board is deleted from the logical port group, and the port connected to the standby main control board (that is, the switched new active main control board) is added to the logical port group. That is, the switching of the members of the logical port group is implemented; the member of the logical port group in this embodiment is unique, that is, the port connected to the current main control board. It can be seen that, in this embodiment, the port connected to the current main control board is added to the logical port group, and the source port of the learned MAC address on the downlink data card is the logical port group, which is not existing. Physical port, you only need to switch the members of the logical port group during the switching process. You do not need to clear the MAC address of the port connected to the main control board. The time for interrupting the uplink and downlink data and services during the switching process is greatly reduced. Basically, non-destructive switching can be achieved, which improves the performance of the system's active/standby switchover, thereby improving the satisfaction of the user experience. Preferably, the switching processing module is further configured to: when the port connected to the main control board of the line card is added to the logical port group, set the working state of the port to normal sending and receiving, and connect the line card to the standby main control board. The working status of the port is set to be normal forbidden; this setting allows the line card to send data to the main control board normally, and can also receive the data sent to the main control board normally, and at the same time, The line card sends data to the standby main control board normally. However, the data sent by the standby main control board is directly discarded to ensure that there is only one data on the line card. In the process of the active/standby switchover, the switch processing module is also configured to delete the working port of the port from the logical port group when the line card is disconnected from the original main control board. The control board has been switched to the standby main control board. This setting can make the main control board unable to send data to the line card effectively. It is also set to connect the line card to the new main control board (that is, the original standby main control board). When the connected port is added to the logical port group, the working state of the port is set to be normal. Because the main control board has been switched to the active main control board, the line card needs to send data to the main control board normally. And receiving data sent by the main control board. Based on the above analysis, in the present embodiment, the standby main control board can receive the data sent by the line card as the main control board normally. Therefore, the MAC address table is in the normal refresh state. In the active/standby switchover process, the standby master After the control board is switched to the main control board, the Layer 2 can forward the traffic immediately, and the traffic can reach the line card. The previous main control board has been switched to the standby main control board, and the traffic cannot reach the line card. For a better understanding of the present invention, the present invention is further described by taking a logical port group as a TRUNK group as an example, and the method flow is further described in the following. FIG. 3 is a schematic diagram of an active/standby switching process according to an embodiment of the present invention. Each part of the process is described as follows: Step S301: The line card is connected to the main and standby main control boards: the two ports of the line card through the switching processing module (for example, the switching chip) are respectively connected to the main and standby main control boards, wherein, The main control board and the line card can send and receive packets normally. The standby main control board can receive the packets sent by the line card normally, but the line card discards all the packets sent by the standby main control board. Step S302: Main, Data synchronization of the standby main control board: This step is to synchronize the data sent by the line card to the active main control board to the standby main board, which can be implemented by mirroring, port bitmap redirection or flooding, etc. Preferably, the mirroring or port port bitmap redirection is implemented; Step S303: Line card initialization: This step involves initializing the line card code. When initializing, the line card detects the main and standby main control boards. The slot (that is, the port) adds the port connected to the main control board to the pre-assigned TRUNK group, so that the source port of the MAC address learned on the downlink data card is the TRUNK group. The physical port is not the same; at the same time, the working state of the port connecting the line card and the main control board is set to normal transmission and reception, that is, the line card can normally send data to the main control board, and can also receive the main service normally. The data sent to the main control board to the port; the working state of the port connected to the standby main board is set to normal transmission prohibition, that is, the line card can normally send data to the standby main control board, but the standby main control is required. The data sent by the board is discarded. Step S304: Detect whether the active/standby switchover is triggered. If yes, go to step S305; otherwise, continue to detect; detect whether the active/standby switchover is triggered, and specifically check whether the active/standby identification signal occurs through the line card hardware. The change is implemented. If a change occurs, it indicates that the master/slave switchover is triggered. The line card hardware generates a hardware interrupt signal to notify the CPU of the line card, and the line card CPU passes the interrupt service routine or interrupts. Processing tasks notification processing module switching line card switchover member TRUNK group; Step S305: Performing an active/standby switchover: After receiving the switching notification sent by the CPU of the line card, the active/standby switching processing module of the line card receives the line card from the trunk switch connected to the standby main control board from the trunk group. Delete, and set the working status of the port to normal transmission prohibition; add the line card to the TRUNK group connected to the main control board used by the standby switch, and set the working status of the port to normal transmission and reception. . The standby main control board can receive the data sent by the line card as the main control board. Therefore, the MAC address table is in the normal refresh state. During the active/standby switchover process, the standby main control board switches to the main control board. After that, the Layer 2 can forward the traffic immediately, and the traffic can reach the line card. The previous main control board has been switched to the standby main control board, and its traffic cannot reach the line card. It can be seen that the solution provided by the present invention can greatly reduce the service interruption time in the active/standby switching process of the communication device without increasing the cost of the device, improve the performance of the active/standby switchover of the system, and further improve the satisfaction of the user service experience. The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific implementation of the invention is not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims

权 利 要 求 书 Claim
1. 一种通信设备， 包括线卡、 主用主控板、 备用主控板， 所述线卡通过两个端口 分别与所述主用主控板和所述备用主控板连接； 所述线卡包括倒换检测模块、 倒换处理模块； 所述倒换检测模块设置为检测是否触发了主备倒换， 并在检测 到触发了主备倒换时， 向所述倒换处理模块发送倒换通知； 所述倒换处理模块 设置为在初始化时， 将所述线卡与所述主用主控板连接的端口加入指定的逻辑 端口组， 使下行数据在所述线卡上学习到的 MAC地址的源端口为所述逻辑端 口组， 以及设置为收到所述倒换通知后， 将所述线卡与所述主用主控板连接的 端口从所述逻辑端口组中删除， 并将所述线卡与所述备用主控板连接的端口添 加到所述逻辑端口组中。 A communication device, comprising a line card, an active main control board, and a standby main control board, wherein the line card is respectively connected to the main main control board and the standby main control board through two ports; The line card includes a switching detection module and a switching processing module. The switching detection module is configured to detect whether an active/standby switching is triggered, and when detecting that the active/standby switching is triggered, sending a switching notification to the switching processing module; The processing module is configured to add, when initializing, the port connected to the main control board to the designated logical port group, so that the source port of the MAC address learned by the downlink data on the line card is a logical port group, and configured to remove the port connecting the line card from the active main control board from the logical port group after receiving the switching notification, and the line card and the The port connected to the standby main control board is added to the logical port group.
2. 如权利要求 1所述的通信设备， 其中， 所述倒换处理模块还设置为将所述线卡 与所述主用主控板连接的端口加入所述逻辑端口组时， 将该端口的工作状态设 为正常收发， 并将所述线卡与所述备用主控板连接的端口的工作状态设为正常 发禁止收； 以及还设置为将所述线卡与所述主用主控板连接的端口从所述逻辑 端口组删除时， 将该端口的工作状态设为正常发禁止收； 以及还设置为将所述 线卡与所述备用主控板连接的端口添加到所述逻辑端口组中时， 还设置为将该 端口的工作状态设为正常收发。 2. The communication device according to claim 1, wherein the switching processing module is further configured to add a port connected to the main control board to the logical port group, and the port is The working state is set to be normally transmitted and received, and the working state of the port connected to the standby main control board is set to be normally disabled; and the line card is further set to be used with the main main control board. When the connected port is deleted from the logical port group, the working state of the port is set to be normally disabled; and a port that is further configured to connect the line card to the standby main control board is added to the logical port. In the group, it is also set to set the working status of the port to normal transmission and reception.
3. 如权利要求 1所述的通信设备， 其中， 所述线卡还包括 CPU, 所述倒换检测模 块通过所述 CPU向所述倒换处理模块发送所述倒换通知。 The communication device according to claim 1, wherein the line card further comprises a CPU, and the switching detection module sends the switching notification to the switching processing module by the CPU.
4. 如权利要求 1-3任一项所述的通信设备， 其中， 所述倒换处理模块为交换芯片 或 ASIC芯片或网络处理芯片。 The communication device according to any one of claims 1 to 3, wherein the switching processing module is a switch chip or an ASIC chip or a network processing chip.
5. 如权利要求 1-3任一项所述的通信设备， 其中， 所述逻辑端口组为 TRUNK组。 The communication device according to any one of claims 1 to 3, wherein the logical port group is a TRUNK group.
6. 如权利要求 1-3 任一项所述的通信设备， 其中， 所述端口为 SERDES 接口或 SGMII接口或 SMII接口或 XAUI接口或 RXAUI接口或 KR接口或 XLAUI接The communication device according to any one of claims 1 to 3, wherein the port is a SERDES interface or an SGMII interface or a SMII interface or an XAUI interface or an RXAUI interface or a KR interface or an XLAUI interface
Π。 Hey.
7. 如权利要求 1-6任一项所述的通信设备的主备倒换方法， 包括： 初始化， 所述线卡将自身与所述主用主控板连接的端口加入指定的逻辑端 口组， 使下行数据在所述线卡上学习到的 MAC地址的源端口为所述逻辑端口 组； The active/standby switching method of the communication device according to any one of claims 1 to 6, comprising: Initializing, the line card adds a port that is connected to the main control board to the designated logical port group, so that the source port of the MAC address learned by the downlink data on the line card is the logical port group;
所述线卡检测是否触发了主备倒换， 如是， 将自身与所述主用主控板连接 的端口从所述逻辑端口组中删除， 并将自身与所述备用主控板连接的端口添加 到所述逻辑端口组中。 如权利要求 7所述的主备倒换方法， 其中， 所述线卡将自身与所述主用主控板 连接的端口加入指定的逻辑端口组后， 还包括将该端口的工作状态设为正常收 发， 并将自身与所述备用主控板连接的端口的工作状态设为正常发禁止收。 如权利要求 7所述的主备倒换方法， 其中， 所述线卡将自身与所述主用主控板 连接的端口从所述逻辑端口组中删除， 并将自身与所述备用主控板连接的端口 添加到所述逻辑端口组中后， 还包括：  Whether the line card detects whether the active/standby switchover is triggered. If yes, the port connected to the active main control board is deleted from the logical port group, and the port connected to the standby main control board is added. Go to the logical port group. The active/standby switching method according to claim 7, wherein the line card adds the port connected to the main control board to the designated logical port group, and further includes setting the working state of the port to normal. Sending and receiving, and setting the working status of the port connected to the standby main control board to the normal transmission prohibition. The active/standby switchover method according to claim 7, wherein the line card deletes a port that is itself connected to the active main control board from the logical port group, and separates itself with the standby main control board. After the connected port is added to the logical port group, it also includes:
所述线卡将自身与所述主用主控板连接的端口的工作状态设为正常发禁止 收； 以及将自身与所述备用主控板连接的端口的工作状态设为正常收发。 如权利要求 7-9任一项所述的主备倒换方法， 其中， 所述逻辑端口组的成员只 有所述线卡与当前为主用主控板连接的端口。  The line card sets the working state of the port itself connected to the main control board to be normally disabled; and sets the working state of the port connected to the standby main control board to normal transmission and reception. The active/standby switching method according to any one of claims 7-9, wherein the member of the logical port group only has a port connected to the current main control board.
PCT/CN2013/081561 2013-03-04 2013-08-15 Communication device and active/standby switchover method thereof WO2014134903A1 (en)

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