CN100550783C - Hot-plugging detection and treating method - Google Patents

Hot-plugging detection and treating method Download PDF

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CN100550783C
CN100550783C CN 03134727 CN03134727A CN100550783C CN 100550783 C CN100550783 C CN 100550783C CN 03134727 CN03134727 CN 03134727 CN 03134727 A CN03134727 A CN 03134727A CN 100550783 C CN100550783 C CN 100550783C
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configuration information
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CN1529465A (en )
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勇 石
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华为技术有限公司
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Abstract

本发明提供了一种面向高端交换机的热插拔检测和处理方法,属于计算机网络通信领域。 The present invention provides a method for processing HPD and high-end switches, belonging to the field of computer network communications. 该方法在交换机不宕机的情况下通过中断和设备状态机的状态报告报文来检测热插拔,热拔模块时候,不影响业务流的正常转发的状态下,从全局配置信息中分析提取出来与该模块相关的配置信息,数据链路层、IP路由层和QOS各个处理模块分别删除该配置信息并进行备份,清除该模块的状态信息;热插模块时候,将主控板上的当前NETDEV数据结构同步到该模块,在该模块上根据NETDEV数据表恢复硬件设置,执行全局配置信息的保存命令,恢复该模块相关的配置信息。 The method in the case where the switch does not interrupt downtime and equipment via a state report message state machine detects hot-plug, hot drawing, when the module does not affect the normal traffic flow forwarding state Extraction from the global configuration information current hot plug module when the main control board; out associated with the module configuration information, the data link layer, IP routing layer and QOS processing modules are each arranged to delete the backup information and to clear the module status information NETDEV data structure of the synchronization module to restore the hardware settings on the module according to NETDEV data tables, stored command execution global configuration information, to restore the module configuration information. 模块经过热插拔处理后依然可正常工作,在不关闭交换机的情况下,用户可随意替换或移动模块,便于安装、调试和故障检测。 After work module may still treatment after hot-swappable, without closing the switch, the user can easily replace or mobile module, easy installation, commissioning and fault detection.

Description

热插拔的检测和处理方法 Hot plug detection and treatment

所属技术领域 Those of skill

本发明属于计算机网络通信领域,具体涉及一种面向高端交换机的热插拔检测和处理方法。 The present invention belongs to the field of computer network communications, and particularly relates to a hot plug detection processing method for high-end switches. 背景技术 Background technique

在交换机工作的时候,可能由于模块故障等原因,用户希望在交换机不宕机的情况下,进行模块的热插或热拔。 When the switch is in operation, the module may be due to failure or the like, in the case where the user wishes to switch is not down, the hot plug or hot drawing module. 一方面,热插拔的检测和处理不影响其他模块,不影响到业务流的正常转发;另一方面,用户拔出模块的配置信息被删除后,在再次插入的时候,可恢复拔出时该模块的配置信息。 On the other hand, the user pull out the configuration information module is deleted, inserted again in the time, pull recoverable; on the one hand, and the detection process does not affect other hot-swappable modules, does not affect the normal traffic flow forwarding the module configuration information. 即模块的拔出不影响系统其他模块的运行,且系统要确实反映出该模块已经不存在;在用户再次插入该模块的时候,该模块的配置信息能够恢复,插入之后,用户无需干预,模块就可以象没拔出一样正常工作(转发)。 That module is removed without affecting the operation of other modules in the system, and the system to really reflect the module does not exist; the user to insert the module again when the module configuration information can be restored, after insertion, users do not need intervention module you can not pull out the same work as normal (forward).

目前,有的交换机不支持热插拔,或者在进行热插拔后,整个系统必须重新启动,即需要宕机,不能够让系统无间断的工作;还有的热插拔机制不能够做到配置信息的完全恢复。 At present, some switches do not support hot swap, hot plug, or after performing, the entire system must be restarted, the need downtime, the system can not work without interruption; there are hot swappable and can not do configuration information to fully recover. 发明内容 SUMMARY

本发明克服上述热插拔的处理方法的不足,提供一种在交换机不宕机的情况下,可随意替换或移动模块的热插拔检测和处理方法。 The present invention overcomes the deficiencies described above hot-swappable processing method, a method in a case where the switch is not down, or alternatively may be freely HPD processing method and mobile module. 本发明的技术内容: 一种热拔的检测和处理方法,包括: Teachings of the present invention: a method for detecting and hot drawing process, comprising:

(1) 当主控板检测到中断,通过设备状态机发现有模块被拔掉时,或当设备状态机正常运行时,超时没有收到模块的状态报告报文时,进行热拔的处理。 (1) When the main control board detects an interrupt, the state machine through the device when the module is unplugged found, or when the state machine device during normal operation, the timeout state has not received the report from the module, the process of hot drawing.

(2) 从全局配置信息中,提取与该模块相关的配置信息,保存全局配置信息中和模块的相关命令; (2) from the global configuration information, the module associated with the extracted configuration information stored in the global information related commands and modules;

(3) 数据链路层、IP路由层、QoS各个处理模块删除与该模块相关的配置 (3) data link layer, IP routing layer, QoS respective processing module configured to delete the module associated with

信息,并进行相应的备份; Information and the corresponding backup;

(4) 清除该模块的状态信息。 (4) remove the module state information.

一种热插的检测和处理方法,包括:(1) 当设备状态机正常运行时,收到新的模块的注册请求报文,进行热插的处理; A thermal detection and interpolation processing method, comprising: (1) when the normal operation of the device the state machine, the new module is received registration request message, the process of the hot plug;

(2) 数据链路层、IP路由层、QOS各个处理模块下发与该模块相关的配置; (2) data link layer, IP routing layer, QOS issued each processing module with the module-related configuration;

(3) 执行全局配置信息的保存命令,恢复该模块相关的配置信息。 (3) the implementation of the global configuration command to save information to restore the module configuration information. 将主控板上的当前NETDEV数据结构同步到该模块,在该模块上根据 Current NETDEV MPU data structure to synchronize the module on the module according to the

NETDEV数据表恢复硬件设置; NETDEV data table restore hardware settings;

热拔处理的步骤(3)中数据链路层的处理包括: Hot drawing process step (3) Processing the data link layer comprises:

a、 在模块拔出后,首先模块上的每个端口都产生一个NETDEV一DOWN事件,通过这个事件清除动态信息; a, after the module is removed, the first port on each module generates a DOWN NETDEV an event, the event clears the dynamic information;

b、 执行与保存信息命令作用相反的命令,清除相关的配置信息,并在执行命令过程中产生相应的设备通知事件; B, performs the role of the command information stored order to the contrary, clear the related configuration information, and generates a corresponding device notifies the event execution of the command;

c、 删除NETDEV表中和模块中各端口对应的表项内容,并产生NETDEV—UNREGISTER事件。 C, remove the contents of the entry corresponding to each port module and NETDEV table, and generates NETDEV-UNREGISTER event.

热拔处理的步骤(3)中IP路由层的处理包括:业务版拔出后,接口板的端口产生的DOWN事件通过通知链函数通知路由模块,路由模块重新路由计算,删除相应的路由表项。 IP routing layer processing step of hot drawing process (3) comprising: a rear plate removed traffic, port interface board DOWN events generated by notification module notifies the routing function chain, the route calculation module rerouting, deleting the corresponding routing entry .

热拔处理的步骤(3)中QoS各个处理模块的处理包括:通过注册热插拔处理的回调函数删除模块接口上所有相关的QOS和ACL配置软件信息。 (3) Processing QoS module each processing step of drawing heat treatment comprising: a software configuration information via the callback function registered hot-swap processing delete all the ACL and QOS module interface.

热插处理的步骤(5)中数据链路层的处理包括:将主控板上的当前NETDEV 数据结构下发到该模块,模块根据NETDEV数据表恢复硬件设置。 (5) heat treatment step of the interpolation process in the data link layer comprises: a current NETDEV send data structure in the main control board to the module, the module to restore the hardware set according to the data table NETDEV.

热插处理的步骤(5)中IP路由层的处理包括:将FIB表全部下发到该模块。 (5) heat treatment step of the interpolation process IP routing layer includes: a FIB issued to all the modules.

热插处理的步骤(5)中QoS各个处理模块的处理包括:通过CALLBACK函数恢复相关的配置。 (5) Processing of each processing module QoS thermal step interpolation process comprising: recovery-related configuration through CALLBACK function.

本发明的技术效果:本发明在交换机不宕机的情况下通过中断和设备状态机的状态报告报文检测触发热插拔,热拔模块的时候,不影响业务流的正常转发的 Effects of the Invention: The present invention in a case where the switch does not interrupt downtime and equipment via a state machine status report message hot plug detection trigger, when the hot-removal module, without affecting the normal flow of traffic forwarded

状态下,数据链路层、IP路由层和QOS各个处理模块分别删除该模块的配置信息并进行备份;热插模块时候,该模块恢复相关的配置信息。 State, data link layer, IP routing layer and QOS processing modules are each arranged to delete information and the backup module; hot plug module when the module configuration information recovery. 模块经过热插拔处理后依然可正常工作,在不关闭交换机的情况下,用户可随意替换或移动模块,便于安装、调试和故障检测,使得交换机产品更具竞争力,实现了交换机的"即插即用"。 After treatment still hot swappable module can work, without closing the switch, the user can easily replace or mobile module, easy installation, commissioning and fault detection, so that the products more competitive switch, the switch to achieve a "i.e. plug and play. " 且对于热拔的检测,使用两种机制:中断(硬检测)和状态报告报文(软检测),当主控板一段时间没有收到模块的报文后,既可以认为该模块已经拔出,也可以认为该模块发生了故障,故热拔的检测还具有一个故障检测的功能。 And for detection of hot drawing, two mechanisms: an interrupt (hardware detection) and a status report message (soft detection), a period of time when the control board receives no packet module, the module may be considered to have been removed It can also be considered that the module has a failure, so the heat detector further has a function of pulling a fault detection. 附图说明 BRIEF DESCRIPTION

图1是本发明热拔的处理流程图; FIG 1 is a flowchart of processing according to the present invention, pulling heat;

图2是本发明热插的处理流程图。 FIG 2 is a flowchart of the inventive heat interpolation. 具体实施方式 detailed description

对于热拔的检测,使用两种机制:中断(硬检测)和状态报告报文(软检测);热插的处理仅仅是由业务模块的注册触发,中断不触发热插处理过程。 For the detection of hot drawing, using two mechanisms: interrupts (hardware detection) and status report message (soft detection); handling hot plug is only triggered by a registered service module, the interrupt is not triggered hot-plug process. 所有的热插拔处理都是在一个新的任务空间进行的,这个新的任务的优先级等同于设备状态机任务的优先级;当热插拔处理完成,这个任务自动退出。 All hot-swap processing is a new task in the space, the device is equivalent to the priority of the task state machine priority of this new task; hot plug-in process is completed, this task automatically exit.

热拔的检测和处理,主要是配置信息的删除、以及配置信息的提取备份。 Hot plug detection and treatment, mainly to remove the configuration information, and extracting backup configuration information. 当有用户物理的拔出一个模块时,主控板检测到中断、通过设备状态机(主控板一段时间没有收到对方的心跳报文)发现有模块被拔掉时,在这个中断里面检测出那个模块被拔出,根据模块的槽位号,检査模块的运行状态,如果该模块的当前运行状态小于MODULE—MOD一READY,则不进行热插拔的处理;反之,则进行热插拔的处理;当ACTIVE MASTER (中断)长时间没有收到某业务模块的状态报告报文时,如果该模块的的当前运行状态不小于MODULE一MOD一READY,则进行热拔的处理。 When the user has pulled out a physical module, MPU interrupt is detected by the device state machines (MPU period does not receive a heartbeat message of the other) when the module is unplugged found, the interrupt detection in which that module is pulled out, according to the slot number of the module, the module's operating status check, if the current operating state of the module is less than a READY mODULE-MOD, hot-swap processing is not performed; otherwise, the hot plug pulling process; when ACTIVE MASTER (break) time service module does not receive a status report message, if the current operating status of the module is not less than a READY mODULE a MOD, hot-removal process is performed.

参考图1,热拔的处理包括:(1)从全局配置信息(SHOW RUN)中,提取出与该模块相关的配置信息,首先形成与被拔出板相关联的命令块,对每一个命令块构造特征关键字,搜索出包含相应命令块的配置信息,并保存全局配置信息中和模块的相关命令。 1, with reference to FIG hot drawing process comprising: (1) from the global information (SHOW RUN) configured to extract the module associated with the configuration information, is first formed with the plate pulled associated command, each command block structure feature keywords, searches the configuration information includes a respective command block, and stores the information in the global configuration commands and associated modules. (2)在模块拔出后,首先为模块上的每个端口都产生一个NETDEV一DOWN事件,通过DOWN事件清除动态信息,其次,保存的命令是用于在接口板插入后恢复接口板的配置,那么在接口板拔出以后,只要执行和这些命令作用相反的命令,就可以清除和拔出单板相关的配置信息, 并在执行命令过程中产生相应的设备通知事件;在完成相关配置清除后,删除NETDEV表中和接口板中各端口对应的表项内容,并产生NETDEV—UNREGISTER事件。 (2) after the module is pulled out, for each port on the first module generates a DOWN event NETDEV a clear DOWN dynamic event information, secondly, the saved recovery command interface card for insertion in a board configuration , then after the interface board is pulled out, as long as these commands and command opposite effect, and can be pulled out to clear the board configuration information, and generates a corresponding device notifies the event execution of the command; Clear completed configuration after deleting NETDEV interface board table and table items corresponding to each port, and generates NETDEV-UNREGISTER event. 热拔时L3层模块最核心的任务是处理路由表和ARP表的变化。 Hot drawing the core task of the L3 layer is a processing module changes the routing table and the ARP table. 业务版拔出后,接口板的端口DOWN事件通过通知链函数通知路由模块,路由模块会重新路由计算,删除相应的路由表项。 After the business version pulled out port interface board DOWN event notification by notifying the chain function routing module, routing module will re-route calculation, delete the corresponding routing table entry. 这个过程会通过路由模块所注册的通知链函数与L2的热拔处理可以比较好的衔接,因此流程上不需要特殊处理。 This process will be registered by the routing module function notification chain pull L2 heat treatment may be a better convergence, the flow and therefore no special handling. 对于ARP表,板子拔出后,从该板上学习到的ARP表已经没有保留必要,应该立即从系统中老化删除。 For the ARP table, pull out the board, the board learned from the ARP has no reservations necessary, aging should be removed from the system immediately. 通过注册热插拔处理的回调函数删除所有相关的QOS和ACL配置软件信息。 Delete all associated QOS and ACL software configuration information through the callback function registered hot-swap process.

(3) 清除该模块的状态描述信息。 (3) Clear the status of the module description information.

(4) 为了防止被拔模块死掉,可以对该模块执行一次重启。 (4) In order to prevent pulling die module, the module may perform a restart. 热插的捡测和处理,主要是通过重新下发软件表项来实现配置信息的恢复。 Heat treatment and interpolated pick test, mainly achieved restoring the configuration information issued by the software re-entry.

当有新的业务板插进来时,它要向主控板发送注册请求报文,ACTIVE MASTER (中断)向该业务模块发送应答,并置标记位为热插。 When a new service card inserted to when it was about to MPU sends a registration request packet, ACTIVE MASTER (Interrupt) to the service module sends a response, and sets the flag to hot plug. 接口板收到注册响应报文之后开始与主控板进行同步,在一块单板插入后,需要将主控板上的当前NE丁DEV数据结构(不包括已经保存的和拔出单板相关的配置)同步到此接口板,并且根据这些软件表项在硬件中进行相应的配置。 The interface board receives synchronization with the MPU starts after registration response packet, after a board is inserted, the data structure of the current NE butoxy DEV MPU (excluding the board has been saved and the need to pull the relevant configuration) this synchronous interface board, and arranged in the corresponding software according to the hardware table entry. 参考图2,顺序做如下处理: Referring to Figure 2, the processing sequence as follows:

Cl)创建端口和缺省VLAN,和系统启动时执行的操作基本一样; Cl) Create operation performed when the priming port and default VLAN, VLAN system and essentially the same;

(2) 主控板同步NETDEV数据表到插入的接口板,发送完数据后,主控板等待接口板完成硬件配置; (2) Synchronous control board to insert the data table NETDEV interface board, after sending the data, the MPU waits for the completion of the hardware configuration of the interface board;

(3) 接口板在NETDEV数据表后,根据此数据表进行相应的硬件设置,接口板完成硬件设置后,发送消息通知主控板; (3) after the interface board NETDEV the data table, the corresponding hardware set according to this data table, the hardware interface board set is completed, notifies the main control board sends a message;

(4) 主控板比较单板类型,判断是否需要进行配置恢复; (4) comparing the MPU board type, whether it is necessary to restore configuration;

(5) 主控板提取并执行保存的配置命令块,对插入的接口板进行配置。 (5) The MPU saved configuration fetching and executing the command block, on the interface board inserted configuration.

(6) 主控板完成接口板的配置后,打开接口板的各端口,使插入的接口板能够进行业务转发; (6) the main control board of an interface board, to open the respective port interface board, so that the interface board can be inserted into the forwarding service;

热插时L3模块最核心的任务是处理路由表和ARP表的变化。 Hot plug core task change processing module L3 routing tables and ARP table. 对于新插入的业务版,需要将FIB表全部下发到该模块,另外插入后接口UP增加的路由也要一并下发。 For the newly inserted business version, you will need all the FIB issued to the module, insert the additional increase of routing interfaces UP together also issued. QOS和ACL模块可以通过注册热插的CALL—BACK函数来实现恢复。 QOS and ACL module can register the CALL-BACK hot plug functions to achieve recovery.

当有多个模块同时插入系统时,热插处理是串行的;对于每一个模块的处理过程同上。 When a plurality of modules into the system at the same time, the thermal process is a serial plug; each module for processing as above.

Claims (8)

  1. 1.一种热拔的检测和处理方法,包括: (1)当主控板检测到中断,或当设备状态机正常运行时,超时没有收到模块的状态报告报文时,通过设备状态机发现有模块被拔掉,进行热拔的处理; (2)从全局配置信息中,提取与该模块相关的配置信息,保存全局配置信息中的与模块相关的命令; (3)数据链路层、IP路由层、QoS各个处理模块删除与该模块相关的配置信息,并进行相应的备份; (4)清除该模块的状态信息。 1. A method for detecting and hot drawing process, comprising: (1) When the main control board detects the interrupt, the state machine device or when the normal operation, the module does not receive a timeout status report message, the state machine through the device found module is unplugged, the process of hot drawing; (2) from the global configuration information, the module associated with the extracted configuration information, command information stored in the global configuration associated with the module; (3) a data link layer , IP routing layer, QoS processing module deletes the individual associated with the module configuration information and the corresponding backup; (4) remove the module state information.
  2. 2.如权利要求1所述的热拔的检测和处理方法,其特征在于步骤(3)中数据链路层的处理包括-a、 在模块拔出后,首先模块上的每个端口都产生一个NETDEV—DOWN事件,通过这个事件清除动态信息;b、 执行与保存配置信息命令作用相反的命令,清除相关的配置信息,并在执行命令过程中产生相应的设备通知事件;c、 删除NETDEV表中和模块中各端口对应的表项内容,并产生NETDEV—UNREGISTER事件。 , After the module is removed, the first port of each module 2 generates hot plug detection and processing method according to claim 1, wherein the step (3) Processing the data link layer comprises -a a NETDEV-DOWN events, clear motion information by the event; B, performed to save the configuration information about the command action order to the contrary, clear the related configuration information, and generates a corresponding device notifies the event execution of the command; C, remove NETDEV table table items corresponding to each port and the module, and generates NETDEV-UNREGISTER event.
  3. 3.如权利要求1所述的热拔的检测和处理方法,其特征在于步骤(3)中IP路由层的处理包括:业务版拔出后,接口板的端口产生的DOWN事件通过通知链函数通知路由模块,路由模块重新路由计算,删除相应的路由表项。 3. The method of detection and treatment of hot drawing according to claim 1, wherein the step (3) IP routing processing layer comprising: Business Edition pulled back, DOWN event port interface card generated by the notification function chain notification routing module, routing module re-route calculation, delete the corresponding routing table entry.
  4. 4.如权利要求1所述的热拔的检测和处理方法,其特征在于步骤(3)中QoS各个处理模块的处理包括:通过注册热插拔处理的回调函数保存模块接口上所有相关的QOS和ACL配置软件信息。 4. The method of detection and treatment of hot drawing according to claim 1, wherein the step (3) Processing each QoS processing module comprises: a callback function registered by hot-swap process on all the storage module interface QOS ACL software and configuration information.
  5. 5. —种热插的检测和处理方法,包括:(1)当设备状态机正常运行时,收到新的模块的注册请求报文,进行热插的处理;(2)数据链路层、IP路由层、QOS各个处理模块下发与该模块相关的配置;(3)执行全局配置信息的保存命令,恢复该模块的相关配置信息。 5. - The method of detection and treatment of types of hot plug, comprising: (1) when the normal operation of the device the state machine, the new module receives a registration request message, the process of the hot plug; (2) data link layer, IP routing layer, the QOS of each processing module and delivered by the module configuration related; (3) perform the global configuration information save command, the configuration information recovery module.
  6. 6. 如权利要求5所述的热插的检测和处理方法,其特征在于步骤(2)中数据链路层的处理包括:将主控板上的当前NETDEV数据结构下发到该模块, 模块根据NETDEV数据表恢复硬件设置。 6. A method for thermal detection and interpolation process as claimed in claim 5, wherein the step (2) Processing the data link layer comprises: a current NETDEV send data structure in the main control board to the modules, recovery hardware NETDEV set according to the data table.
  7. 7. 如权利要求5所述的热插的检测和处理方法,其特征在于步骤(2) 中IP路由层的处理包括:将FIB表全部下发到该模块。 7. The method for thermal detection and interpolation process as claimed in claim 5, wherein the step (2) Processing IP routing layer includes: a FIB issued to all the modules.
  8. 8. 如权利要求5所述的热插的检测和处理方法,其特征在于步骤(2) 中QoS各个处理模块的处理包括:通过CALLBACK函数恢复相关的配置。 Detection and treatment of hot plug according to claim 5, wherein the step (2) Processing QoS processing modules each comprising: a recovery-related configuration through CALLBACK function.
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