CN101094186A - Method and interface board of retaining neighbourhood - Google Patents

Method and interface board of retaining neighbourhood Download PDF

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CN101094186A
CN101094186A CN 200710119689 CN200710119689A CN101094186A CN 101094186 A CN101094186 A CN 101094186A CN 200710119689 CN200710119689 CN 200710119689 CN 200710119689 A CN200710119689 A CN 200710119689A CN 101094186 A CN101094186 A CN 101094186A
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neighbor
packet
device
packets
distributed
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CN 200710119689
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Chinese (zh)
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CN100568854C (en )
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钱雪彪
吕若达
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杭州华三通信技术有限公司
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Abstract

The method comprises: setting up the neighbor relation keeping messages in the distribution device and its neighbor devices; generating the neighbor relation keeping message in the interface in the distribution device; when the sending cycle of each pre-determined message comes, said neighbor relation keeping messages are sent to the said neighbor devices; said neighbor devices decide if said neighbor relation keeping messages are received in the keep-alive interval; if yes, then keeping the neighbor relation with the distribution device; otherwise, cutting off the neighbor relation with the distribution device.

Description

一种保持邻居关系的方法和接口板 A method of maintaining neighbor relationships method and an interface board

技术领域 FIELD

本发明涉及网络通信技术,特别是涉及一种保持邻居关系的方法和接口板。 The present invention relates to network communication technology, particularly to a method of holding the neighbor relationship and an interface board.

背景技术 Background technique

在网络中,分布式设备是一种将数据转发功能和控制功能分离的网络设备,其内部包括主控板和接口板。 In the network, the device is a distributed data forwarding function and the separating function of the network control apparatus comprising a main internal and interface boards. 其中,主控板完成控制功能,如发现与其他设备之间的路由并与邻居设备保持邻居关系等,而接口板则完成数据转发功能。 Wherein the main control board control functions, such as route found between the other device and the neighbor relationship with neighboring equipment, and the interface board data forwarding function is completed. 图1是双主控分布式设备的结构示意图。 1 is a schematic configuration of distributed dual master device. 参见图1,在目前,为了提高分布式设备的可靠性,在分布式设备内部设置了主用主控板和备用主控板,当主用主控板发生故障时,进行主备倒换过程,备用主控板切换成主用主控板,负责所有控制业务的运行。 Referring to Figure 1, at present, in order to improve the reliability of distributed devices in the distributed device is provided inside the AMB and the SMB when the AMB fails, a standby switching process, the standby MPU is switched to a main control board, is responsible for running all the control traffic.

为了使得双主控分布式设备在进行主备倒换时,其数据转发业务不中断,目前提出了优雅重启(graceful restart,GR)的实现方案。 In order to make the distributed dual master device during standby switchover, the data packet forwarding, the currently proposed Graceful Restart (graceful restart, GR) implementations. 分布式设备实现GR的过程包括:分布式设备在其控制软件重启即需要进行主备倒换时,向其邻居设备发出通知,邻居设备根据接收到的通知,在一段时间内可以实现到该分布式设备的邻居关系和路由不变,也就是说,该邻居设备仍然与分布式设备中的接口板进行正常的数据交互,使得网络的转发业务保持不中断,并且,在分布式设备的主备倒换完成后,该邻居设备还可以帮助倒换后的主用主控板完成路由信息同步,使得分布式设备恢复到正常工作状态。 A GR Process distributed device comprising: a distributed equipment that are needed to control the switchover in its software reset, its neighbor notification apparatus, a notification apparatus according to the received neighbor in a period of time may be achieved to the distributed neighbor relationship and routing equipment of the same, that is to say, the neighbor device is still normal data exchange with the distributed device interface board, making the network forwarding service remains uninterrupted, and the switchover in the main distributed devices after completion, the device may also help the neighbor AMB routing information after switchover is completed synchronization, the distributed device returns to normal operation.

目前,分布式设备与其邻居设备保持邻居关系的方法为:分布式设备中当前的主用主控板在每个报文发送周期到来时,向其邻居设备发送Hello报文,邻居设备监测在Hello报文对应的保活间隔内是否接收到分布式设备发来的Hello报文,如果接收到,则启动下一个保活间隔内的监测,并保持与分布式设备的邻居关系,即维持与分布式设备之间的路由不变,从而继续与分布式设备中的接口板进行数据交互,如果未接收到,则断开与分布式设备的邻居关系,同时删除下一跳为分布式设备的路由,从而不再与分布式设备中的接口板进行数据交互。 Currently, the neighbor relationship with its neighbor Distributed equipment device: the device current distributed AMB at each packet transmission period arrives, sending Hello packets to the neighbor device, device monitoring a neighbor Hello whether a distributed device sent the Hello packet corresponding to the packet keep-alive interval, if the received monitoring within the next keep-alive interval is initiated, and maintaining neighbor relationships distributed devices, i.e., to maintain the distribution route between the same devices to continue exchanging data with the distributed device interface board is not received, the neighbor relationship with the distributed devices is turned off, while deleting the distributed next hop routing device thereby no longer interact with a distributed data device interface board.

由以上描述可以看出,在现有的保持邻居关系的过程中,分布式设备是通过内部的主控板向邻居设备发送Hello报文从而保持邻居关系。 As can be seen from the above description, in the conventional process of neighbor relations, it is a distributed device sends Hello packets to neighbors in order to maintain the neighbor relationship inside the device through the main control board. 这样,在GR实现过程中,如果分布式设备在Hello报文对应的保活间隔内未完成GR过程的主备倒换,就无法由主控板向其邻居设备发送Hello报文,使得邻居设备断开与分布式设备的邻居关系,从而导致分布式设备的数据流量中断,GR过程无法成功。 Thus, the GR implementation process, if the device in the distributed Hello packet corresponding to the keep-alive interval unfinished GR standby switchover process, can not send Hello packets to its neighbors by a main control board equipment, so that neighboring devices off neighbor relations and open distributed devices, causing traffic interruption distributed devices, GR process can not succeed.

为了保证GR过程的成功,现有技术的一种处理方法为:延长Hello报文对应的保活间隔,使保活间隔的时间长度大于分布式设备主备倒换所需的时间长度,保证分布式设备在保活间隔内能够完成主备倒换,并向邻居设备发送Hello报文,从而保证GR过程的成功。 To ensure the success of the process GR A processing method of the prior art: Hello packets corresponding to the extension of the keep-alive interval, the length of the keep-alive time interval greater than the length of time required for the switchover distributed device to ensure distributed device within the keep-alive interval can be completed standby switchover device and sends a neighbor Hello packets, to ensure the success of the process of GR.

然而,现有技术延长保活间隔的做法会降低网络故障时的路由收敛速度,往往导致网络数据流量的中断。 However, the prior art to extend the keep-alive interval approach will reduce the route convergence speed of a network failure, often resulting in network data traffic interruption. 比如,当分布式设备发生整机断电故障或分布式设备与其邻居设备之间的链路断开,使得分布式设备根本无法再继续进行数据转发后,由于延长了保活间隔,邻居设备则只能在等待一个较长的时间后才能探测到该故障,才能进行相应的路由收敛处理,从而降低了网络的路由收敛速度,导致网络数据流量的长时间中断,大大降低了业务服务质量。 For example, when the distributed device when the link is disconnected between the whole distributed power failure or device and its neighboring devices, such that the distributed device can not continue to forward the data, due to the longer keep-alive interval, then the neighbor device only after waiting a long time to detect the fault, in order to make the appropriate routing convergence process, which reduces the speed of the network routing convergence, leading to prolonged interruption of network traffic, greatly reducing the quality of service.

由此可见,如何在保证GR成功的同时保证网络的路由收敛速度,已经成为了一个亟待解决的问题。 Thus, how to ensure convergence rate routing network in the same time to ensure the success of the GR, has become an urgent problem to be solved.

发明内容 SUMMARY

有鉴于此,本发明的一个目的在于提供一种保持邻居关系的方法,本发明的又一个目的在于提供一种接口板,以便于在保证GR成功的同时,保证网络的路由收敛速度。 In view of this, an object of the present invention to provide a method of maintaining a neighbor relationship, a further object of the present invention is to provide an interface board so as to ensure the success of GR while ensuring the convergence speed of the route.

为了达到上述目的,本发明的技术方案是这样实现的:一种保持邻居关系的方法,在分布式设备与其邻居设备中设定邻居关系保持报文,该方法还包括:分布式设备中的接口板生成邻居关系保持报文,并在预先设置的每个报文发送周期到来时,向所述邻居设备发送邻居关系保持报文;所述邻居设备判断在预先设置的保活间隔内是否接收到邻居关系保持报文,如果是,则保持与分布式设备的邻居关系,否则,断开与分布式设备的邻居关系。 To achieve the above object, the technical solution of the present invention is implemented: one method for maintaining neighbor relationships, set the neighbor relationship with its neighbor devices distributed device keepalive packets, the method further comprising: a distributed interface apparatus generating a neighbor relationship plate packet, and each packet transmission period set in advance arrival, send a neighbor relation to the neighbor packet holding device; device determines whether the neighbor is received in the keep-alive interval set in advance neighbor relationship message, and if so, to keep the neighbor relationship with the distributed devices, otherwise, the neighbor relationship is disconnected from the distributed devices.

一种接口板,该接口板包括:报文生成单元,用于生成邻居关系保持报文;计时单元,用于在每次计时到达一个报文发送周期时,向收发单元发送触发通知;收发单元,用于在接收到触发通知后,将报文生成单元生成的邻居关系保持报文发送至外部邻居设备。 An interface board, the interface board comprising: a message generation unit for generating a neighbor relationship message; timer means for counting each time a new packet arrives transmission period, triggering a notification to the transmitting transceiving unit; transceiving unit , after receiving the trigger for notification, the packet generation unit neighbor relationship packet transmitted to the external device neighbor.

可见,在本发明中,没有延长保活间隔,因此,可以保证网络的路由收敛速度,并且,又由于是由分布式设备中的接口板生成并发送保持邻居关系的报文,而不是由主控板生成并发送用于保持邻居关系的报文,因此,即使分布式设备中发生主备倒换,也能够保证邻居设备在保活间隔内收到用于保持邻居关系的报文,因此,也保证了GR过程的成功。 It is seen, in the present invention, no prolonged keep-alive interval, therefore, the convergence speed can be guaranteed route, and, because it is generated and distributed by the device interface board and transmits packets to maintain neighbor relationships, rather than the main It generates and transmits a control board for holding the neighbor relationship packets, and therefore, even if the distributed standby switchover device can be ensured for the neighbor device receives the neighbor relationship keep-alive packets in the interval, therefore, GR ensure the success of the process.

另外,在本发明中,不仅可以利用分布式设备与其邻居设备原来使用的Hello报文来作为保持邻居关系的报文,而且,还可以利用目前广泛使用的通用监测协议的探测报文来作为保持邻居关系的报文,因此,大大增加了本发明实现的灵活性。 Further, in the present invention may be utilized not only distributed device Hello packets from its neighbors apparatus originally used as a holding packets neighbor relationship, but may also be utilized to monitor common probe packet protocol widely used as a holding packet neighbor relations, therefore, greatly increasing the flexibility of the present invention realization.

附图说明 BRIEF DESCRIPTION

图1是分布式设备的结构示意图。 1 is a schematic configuration of the distributed device.

图2是在本发明实施例1中保持邻居关系的流程图。 Example 1 FIG. 2 is a flowchart of the present embodiment in the neighbor relationship is maintained.

图3是在本发明实施例2中保持邻居关系的流程图。 FIG 3 is a flowchart of the neighbor relationship in the present invention in Example 2.

图4是在本发明一个实施例中提出的接口板内部的结构示意图。 FIG 4 is a schematic view of the interior of the interface board in a forth embodiment of the present embodiment of the invention.

具体实施方式 Detailed ways

为使本发明的目的、技术方案和优点更加清楚,下面结合附图及具体实施例对本发明作进一步地详细描述。 To make the objectives, technical solutions, and advantages of the present invention clearer, the following specific embodiments of the present invention will be described in further detail in conjunction with the accompanying drawings and.

本发明提出了一种保持邻居关系的方法。 The present invention provides a method of maintaining neighbor relationships. 在该方法中,在分布式设备与其邻居设备中设定邻居关系保持报文;分布式设备中的接口板生成邻居关系保持报文,并在预先设置的每个报文发送周期到来时,向所述邻居设备发送邻居关系保持报文;所述邻居设备判断在预先设置的保活间隔内是否接收到邻居关系保持报文,如果是,则保持与分布式设备的邻居关系,否则,断开与分布式设备的邻居关系。 In this process, the distributed device set its neighbors apparatus neighbor relationship packets; distributed device interface board generates a packet neighbor relationship, and when each packet sending period set in advance the arrival of the transmitting the neighbor neighbor relationship packet holding device; determining whether the neighbor device receives the neighbor relationship keep-alive message within a preset interval, if so, to maintain neighbor relationships distributed devices, otherwise, disconnected relations with neighbors distributed devices.

可见,在本发明提出的保持邻居关系的方法中,没有延长用于等待保持邻居关系的报文的保活间隔,因此,可以保证网络的路由收敛速度,并且,又由于是由分布式设备中的接口板生成并发送保持邻居关系的邻居关系保持报文,而不是由主控板生成并发送用于保持邻居关系的报文,因此,即使分布式设备中发生主备倒换,也能够保证邻居设备在保活间隔内收到用于保持邻居关系的报文,因此,也保证了GR过程的成功。 Seen, the proposed method of maintaining neighbor relationships of the present invention, no prolonged waiting for the neighbor relationship keep-alive packet interval, therefore, the convergence speed can be guaranteed route, and, since they are distributed by the device the interface board generates and transmits a neighbor relationship neighbor relationship packets, instead of generating and sending a control board for holding the neighbor relationship packets, therefore, even if the standby switchover distributed device, it is possible to ensure that the neighbor device receives packets for neighbor relations in the keep-alive interval, therefore, to ensure the success GR process.

在本发明中,用于保持邻居关系的邻居关系保持报文可以采用多种方式实现,比如,方式一、利用现有技术中用于保持邻居关系的Hello报文来实现。 In the present invention, for maintaining a neighbor relationship neighbor relationship packet may be implemented in various ways, for example, a manner, in the prior art for holding the neighbor relationship Hello packets to achieve.

方式二、利用通用监测协议的探测报文来实现。 Second way, using a common protocol monitoring probe packets to achieve.

下面针对上述实现邻居关系保持报文的两种方式分别举一个具体实施例来说明本发明的全部实现过程。 For the following two ways to achieve the above-described neighbor relationship packets are cited to illustrate a particular embodiment of the present invention to achieve full process.

实施例1:在本实施例中,邻居关系保持报文采用上述方式一中的Hello报文来实现。 Example 1: In this example, the neighbor relationship packet using the above-described embodiment a Hello packet is achieved.

图2是在本发明实施例1中保持邻居关系的流程图。 Example 1 FIG. 2 is a flowchart of the present embodiment in the neighbor relationship is maintained. 参见图2,在本实施例中,保持邻居关系的一种较佳实现过程包括以下步骤:步骤201:在分布式设备与其邻居设备中设定用于保持邻居关系的报文为Hello报文。 One kind Referring to Figure 2, in the present embodiment, the neighbor relationship preferred implementation includes the following steps: Step 201: set the apparatus in a distributed device for holding its neighbors neighbor relationship packets Hello packet.

本步骤与现有技术的相应处理相同,均将Hello报文作为保持邻居关系的报文。 This step is the same as the corresponding process of the prior art are maintained as the Hello packet neighbor relationship packets.

步骤202:在分布式设备中,当前的主用主控板与分布式设备的邻居设备建立邻居关系。 Step 202: In a distributed device, the current AMB neighbor relationship with neighbors of distributed devices.

本步骤中,当前的主用主控板可以是分布式设备未发生主备倒换时的主用主控板,此时,本步骤以及图2后续步骤的处理可以是在分布式设备初始启动时,由初始的主用主控板触发执行的。 In this step, the current AMB may be distributed not AMB apparatus when the switchover occurred, this time, the present process step, and subsequent steps of FIG. 2 may be distributed in an initial starting device , from the initial trigger AMB performed. 比如,本步骤中,接口板1上的接口1刚启动路由协议如开放式最短路径优先路由(OSPF)协议或中间系统间域内路由交换(ISIS)协议时,初始的主用主控板从该接口板1的接口1上发送Hello报文,当初始的主用主控板接收到邻居设备返回的Hello报文后,则与该邻居设备建立邻居结构。 For example, in this step, the interface on an interface board 1 has just started routing protocols such as Open Shortest Path First (OSPF) or Intermediate system when the inter-domain routing protocol exchange (the ISIS) protocol, the original from which the AMB interface card sending Hello packets 11 when the initial AMB received Hello packet returned from the device after the neighbor, the neighbor configuration is established with the neighbor device.

另外,当前的主用主控板也可以是分布式设备发生主备倒换后的主用主控板,此时,本步骤以及图2后续步骤的处理可以是在分布式设备进行GR过程时,由倒换后的主用主控板触发执行的。 Further, the current AMB may be a distributed device AMB occurs after the switchover, at this time, the present process step, and subsequent steps of FIG. 2 may be distributed when GR process equipment, AMB by the switching trigger after execution.

步骤203:当前的主用主控板检测所建立的邻居关系的状态是否达到稳定,如果是,则执行步骤205,否则,执行步骤204。 Step 203: the current state of a neighbor AMB detecting whether the established stable, if yes, step 205 is executed, otherwise, step 204 is performed.

这里,检测邻居关系的状态是否达到稳定的方法为现有技术,可以简单举例为:如果分布式设备与其邻居设备支持的路由协议为OSPF协议,那么,当分布式设备中当前的主用主控板检测到与邻居设备之间的状态到达FULL时,则可确定邻居关系已到达稳定,否则,确定邻居关系未到达稳定;如果分布式设备与其邻居设备支持的路由协议为ISIS协议,那么,当分布式设备中当前的主用主控板检测到与邻居设备之间的状态到达UP时,则可确定邻居关系已到达稳定,否则,确定邻居关系未到达稳定。 Here, whether the detected neighbor relationship state is stabilized prior art methods, may be exemplified simple: if the device and its neighbors distributed routing protocols supported by the device OSPF protocol, then, when the current distributed devices in the active main FULL board detects when the device reaches the state between neighbors can be determined neighbor relations have reached a steady, otherwise, the neighbor relationship is determined not to reach the stable; if a distributed device and its neighbor device supports ISIS routing protocol is protocol, then, when distributed devices currently in AMB detected when the state between the UP and the neighboring devices arrive, it may be determined neighbor relations have reached a steady, otherwise, determining that the neighbor does not reach a steady relationship.

另外,如果本步骤的处理是由倒换后的主用主控板触发执行的,也就是说是在分布式设备进行GR过程中执行的,那么,较佳地,在当前的主用主控板即倒换后的主用主控板检测到所建立的邻居关系的状态达到稳定后,可以不立即执行步骤205,而是等到GR过程结束后,再执行步骤205。 Further, if the processing of this step is AMB performed after the switching is triggered, that is GR process executed in a distributed device, then, preferably, the current AMB AMB i.e. after switchover detected neighbor relationship established after stable state, step 205 may not be performed immediately, but wait until the end of the GR process, then step 205 is executed.

步骤204:当前的主用主控板在Hello报文对应的每个报文发送周期到来时,向分布式设备的邻居设备发送Hello报文,执行步骤203。 Step 204: The current AMB when Hello packets corresponding to each packet transmission period arrives, sending Hello packets to the neighbor of distributed devices, step 203 is performed.

步骤205:当前的主用主控板将Hello报文对应的信息携带在故障探测触发通知中发送至接口板。 Step 205: The current AMB Hello message corresponding to the information carried in the notification sent to the interface board fault detection trigger.

步骤206:分布式设备中的接口板从接收到的故障探测触发通知中获取Hello报文对应的信息。 Step 206: the distributed device interface board to detect the trigger notification information acquired from the Hello packet corresponding to the received failure.

步骤207:分布式设备中的接口板根据Hello报文对应的信息,生成Hello报文,并在每个Hello报文对应的报文发送周期到来时,向邻居设备发送Hello报文。 Step 207: the distributed device interface board Hello message according to the information corresponding to the generated Hello message and Hello packets corresponding to each packet transmission period arrives, sending Hello packets to neighbor devices.

这里,Hello报文对应的信息至少包括Hello报文完整的内容、发送Hello报文的接口索引和报文发送周期。 Here, the information corresponding to the Hello packet includes at least complete Hello packets sent and packet transmission interface index periodic Hello packets. 因此,在本步骤207中,分布式设备中的接口板可以根据获取的Hello报文完整的内容来生成Hello报文,并且根据获取的发送Hello报文的接口索引在接口板上对应的接口上发送Hello报文,并且,根据获取的报文发送周期来确定每个Hello报文对应的报文发送周期是否到来。 Accordingly, in the present step 207, the interface card distributed device may be generated according to the obtained Hello packets Hello packet complete, and transmits the acquired interface index Hello packet interface board in accordance with the corresponding interface Hello packets are sent, and, according to the packet transmission period acquired Hello packets to determine each corresponding packet sending period has arrived.

步骤208:分布式设备的邻居设备判断在Hello报文对应的保活间隔内是否接收到分布式设备发来的Hello报文,如果是,则执行步骤209,否则,执行步骤210。 Step 208: the neighbor device determines whether the device distributed in the Hello packet received corresponds to the keep-alive interval distributed device sent the Hello packet, if yes, step 209 is executed, otherwise, step 210 is performed.

步骤209:分布式设备的邻居设备保持与分布式设备的邻居关系,结束当前流程。 Step 209: neighbor relationship with the neighbor device remains distributed devices distributed devices, the current process ends.

步骤210:分布式设备的邻居设备断开与分布式设备的邻居关系。 Step 210: Distributed Device neighbor device is disconnected relationship with the distributed devices neighbors.

需要说明的是,在上述图2所示过程中,是由分布式设备中当前的主用主控板将Hello报文对应的信息发送给接口板,也就是说,分布式设备中的接口板是从当前的主用主控板中获取Hello报文对应的信息。 Incidentally, in the above-described process shown in FIG. 2, is transmitted by the device in the distributed current AMB Hello message information corresponding to the interface board, that is, the distributed device interface board Hello packets access to information corresponding to the current from the AMB. 此种情况下,如果当前的主用主控板需要修改Hello报文对应的信息,如修改Hello报文的相关参数或报文发送周期,则当前的主用主控板将更新后的Hello报文对应的信息发送至接口板,接口板则根据更新后的Hello报文对应的信息,发送Hello报文。 In this case, if the current AMB Hello packets need to modify the corresponding information, such as modifying parameters Hello packet or packet sending period, then the current AMB Hello message from the updated transmitting information file corresponding to the interface board, the interface board Hello message according to the information corresponding to the updated text sending Hello packets.

在实际的业务实现中,也可以直接在接口板上配置Hello报文对应的信息,这样,接口板则根据自身配置获取Hello报文对应的信息。 In practical service implementation may be disposed directly on the interface board Hello packets corresponding to the information, so that the interface board is acquired information corresponding Hello packets according to their configuration. 此种情况下,如果需要修改Hello报文对应的信息,如修改Hello报文的相关参数或报文发送周期,则可以由管理人员将更新后的Hello报文对应的信息发送至接口板,接口板则根据更新后的Hello报文对应的信息,发送Hello报文。 In this case, if the need to modify the corresponding information Hello message, or modify the relevant parameters such as packet sending period of the Hello packet, the information may be transmitted by the Hello packets corresponding to the updated management interface board to interface the information plate of the Hello packets corresponding to the updated, sending Hello packets.

进一步地,在上述图2所示流程中,如果当前的主用主控板需要中止Hello报文的发送(如当前的主用主控板接收到管理人员输入的去使能接口的路由协议的命令,或关闭接口的命令等),那么,当前的主用主控板通知接口板,接口板根据接收到的通知停止发送Hello报文,并删除自身获取的Hello报文对应的信息。 Further, in the above-described flow shown in FIG 2, if the current required AMB abort sending Hello packets (such as the current AMB received routing protocol managers to enable input interfaces command information, command interface, or off, etc.), then the current AMB notification interface boards, interface boards to stop transmitting the notification received Hello packet and deletes itself acquired corresponding Hello packets.

实施例2:在本实施例中,邻居关系保持报文采用上述方式二中的通用监测协议的探测报文来实现,并且,具体地,以目前应用广泛的双向转发探测(BFD)协议中的探测报文来实现。 Example 2: In this example, the neighbor relationship packets using probe packets common monitoring protocol II described above is achieved, and, in particular, the current widely used Bidirectional Forwarding Detection (the BFD) protocol probe packets to achieve.

图3是在本发明实施例2中保持邻居关系的流程图。 FIG 3 is a flowchart of the neighbor relationship in the present invention in Example 2. 参见图3,在本实施例中,保持邻居关系的一种较佳实现过程包括以下步骤:步骤301:预先在分布式设备的接口板和其邻居设备中配置BFD协议。 One kind Referring to Figure 3, in the present embodiment, the neighbor relationship preferred implementation includes the following steps: Step 301: pre-configured BFD protocol of the distributed device interface board and its neighbor devices.

这里,BFD协议是目前设备广泛支持的一种与路由协议无关的用于探测链路故障的通用监测协议。 Here, BFD protocol is protocol-independent generic monitoring devices currently support a wide range of routing protocols are used to detect the link failure. BFD协议中已经定义好了完成探测链路故障需要使用的探测报文的内容、报文发送周期和保活间隔。 BFD protocol has been defined in the content of the probe packets to detect link failure to complete the required packet transmission period, and keep-alive intervals. 较佳地,在本步骤中,BFD对应的报文发送周期和保活间隔的时间长度,可以由BFD协议根据网络的故障探测敏感度要求设定。 Preferably, in this step, the packet sending period and BFD corresponds to the length of time a keep alive interval can be set by the detection sensitivity requirements of the network according to the fault BFD protocol. 比如,网络要求在5秒内发现链路故障,那么,则可以将保活间隔的时间长度设为5秒。 For example, the network requires to detect link failures within five seconds, then, you can keep-alive time interval length is set to 5 seconds.

步骤302:预先在分布式设备与其邻居设备中设定用于保持邻居关系的报文可以为BFD协议的探测报文。 Step 302: The device is set in advance in a distributed apparatus for maintaining its neighbors neighbor relationship BFD protocol message may be a probe packets.

步骤303:在分布式设备中,当前的主用主控板与分布式设备的邻居设备建立邻居关系。 Step 303: In a distributed device, the current AMB establish neighbor relations with neighbors of distributed devices.

步骤304:当前的主用主控板检测所建立的邻居关系的状态是否达到稳定,如果是,则执行步骤306,否则,执行步骤305。 Step 304: the current state of a neighbor AMB detecting whether the established stable, if yes, step 306 is executed, otherwise, step 305 is performed.

步骤305:当前的主用主控板在Hello报文对应的每个报文发送周期到来时,向分布式设备的邻居设备发送Hello报文,执行步骤304。 Step 305: The current AMB when Hello packets corresponding to each packet transmission period arrives, sending Hello packets to the neighbor of distributed devices, step 304 is performed.

上述步骤303至步骤305的具体实现过程的描述与图2中步骤202至步骤204的具体实现过程的描述相同。 Above described step 303 to step 305 and the specific implementation process of step 202 in FIG. 2 to be described the same specific implementation process step 204.

步骤306:当前的主用主控板将故障探测触发通知发送至接口板。 Step 306: The current AMB will trigger the fault detection notification sent to the interface board.

步骤307:分布式设备中的接口板接收到故障探测触发通知后,根据配置的BFD协议,生成BFD协议的探测报文。 Step 307: the distributed device interface board receives the notification trigger fault detection, BFD protocol configuration according to the generated detection BFD protocol packets.

步骤308:分布式设备中的接口板根据配置的BFD协议,在每个探测报文对应的报文发送周期到来时,向邻居设备发送该探测报文。 Step 308: the distributed device interface board according to the BFD protocol configuration, when each probe packet corresponding to the packet transmission period arrives, sending the probe packets to neighbor devices.

步骤309:分布式设备的邻居设备根据配置的BFD协议,判断在探测报文对应的保活间隔内是否接收到分布式设备发来的探测报文,如果是,则执行步骤310,否则,执行步骤311。 Step 309: The distributed device neighbor BFD protocol configuration device determines whether a probe packet is received within a corresponding keep-alive interval to distributed devices probe packets sent, if yes, perform step 310, otherwise, perform step 311.

步骤310:分布式设备的邻居设备保持与分布式设备的邻居关系,结束当前流程。 Step 310: neighbor relationship with the neighbor device remains distributed devices distributed devices, the current process ends.

步骤311:分布式设备的邻居设备断开与分布式设备的邻居关系。 Step 311: Distributed Device neighbor device is disconnected relationship with the distributed devices neighbors.

为了进一步确保GR过程的成功,较佳地,在本实施例2中,也可以延长Hello报文对应的保活间隔,使得该保活间隔大于主备倒换所需要的时间,这样,在GR过程中,当图3所示流程中的当前主用主控板为发生主备倒换后的主用主控板时,通过上述步骤303至步骤305的处理,则可以保证邻居设备在保活间隔内收到倒换后主用主控板发送的Hello报文,进一步确保邻居设备在GR过程中不会断开与分布式设备的邻居关系,保证GR过程的成功。 To further ensure the success of the process of GR, preferably, in the present embodiment 2, can be extended Hello packets corresponding keep-alive interval, so that the keep-alive interval greater than the time required for the switchover, so that, in the process of GR when the AMB AMB current flow shown in FIG. 3 is a front standby switchover occurs, the processing by the above-described step 303 to step 305, a neighbor device is guaranteed in the keep-alive interval Hello packet switching AMB emperor sent further ensure neighbor neighbor relationship does not disconnect the device in the course of GR and distributed equipment to ensure the success of GR process. 另一方面,由于探测链路故障,触发网络路由收敛的处理是由接口板通过与邻居设备交互BFD协议的探测报文来实现,因此,即使延长Hello报文对应的保活间隔,也不会降低网络的路由收敛速度。 On the other hand, due to the link failure detection, trigger processing network routing convergence is achieved by a device interface board by interacting with neighbors BFD protocol probe packets, therefore, even if the extended Hello packets corresponding to the keep-alive interval, not reduced route convergence speed of the network.

在上述图3所示过程中,是以通用监测协议中的BFD协议为例来说明本实施例的实现过程。 In the process shown in FIG. 3 above, is a general-purpose monitoring protocol BFD protocol as an example to illustrate the implementation process of the embodiment. 在实际的业务实现中,也可以使用通用监测协议中的操作管理维护(OAM)协议,也就是说采用OAM协议中的探测报文来作为保持邻居关系的报文,其具体实现保持邻居关系的过程与上述图3所示过程相同。 In the actual business implementation, operation and management can also be used to monitor general agreement in maintenance (OAM) protocol, which means that the use of the probe packet OAM protocol as the neighbor relationship packet, the specific implementation neighbor relations 3 shown in the above-described procedure is the same as FIG.

在上述图2和图3所示过程中,较佳地,所使用的接口板为与所述邻居设备直接相连的接口板。 In the process shown in FIG. 2 and FIG. 3, preferably, the interface board is used with the neighbor device interface board directly connected.

需要说明的是,由于在分布式设备的主用主控板与邻居设备建立的邻居关系未达到稳定之前,主用主控板所进行的邻居关系相关处理比较复杂,比如,需要与邻居设备进行状态协商以及进行邻居探测等,因此,在上述图2和图3所示过程中,采用了在邻居关系达到稳定之前,由当前的主用主控板发送能够保持邻居关系的Hello报文,在邻居关系达到稳定之后,再由接口板发送能够保持邻居关系的Hello报文或探测报文。 Note that, due to the previously established with neighbor devices AMB distributed device neighbor relation is not stable neighbor relationship correlation processing AMB performed more complex, for example, the device needs to neighbor and perform neighbor detection status negotiation, etc. Therefore, in the process of FIG. 2 and FIG. 3, using a stable neighbor relationship before, sent by the current AMB can maintain neighbor relationships Hello packets, in after reaching a stable neighbor relationship, and then send the neighbor relationship can be maintained Hello packets or probe packets from the interface board. 当然,这种处理方式只是为了减少接口板的业务负荷量,保证接口板完成数据转发处理的较佳处理方式。 Of course, this approach is only to reduce the traffic load of the interface board, the interface board to ensure completion of the preferred embodiment process of the data forwarding process. 在实际的业务实现过程中,也可以不考虑所建立的邻居关系的状态,在分布式设备启动后,始终由接口板发送能够保持邻居关系的Hello报文或探测报文。 In the actual implementation process of the business, may not be considered state of a neighbor created, distributed after the device is started, the neighbor relationship can always send Hello packet or a probe packet from the interface board.

本发明还提出了一种分布式设备,其内部的结构如图1所示,包括:主用主控板、备用主控板和接口板,其中,接口板,用于生成邻居关系保持报文,并在预先设置的每个报文发送周期到来时,向分布式设备的邻居设备发送邻居关系保持报文。 The present invention also proposes a distributed device, its internal structure shown in Figure 1, comprising: a main control board, the standby main control board and an interface board, wherein the interface board, for generating a neighbor relationship packets and each message is sent pre-defined period of arrival, sent to neighboring devices distributed devices neighbor relationship messages.

具体地,分布式设备中的接口板可以采用分布式设备原有支持的Hello报文来作为邻居关系保持报文,此种情况下,所述接口板用于获取Hello报文对应的信息,并根据获取的该信息生成Hello报文,将Hello报文作为所述邻居关系保持报文进行上述的发送处理。 Specifically, the distributed device interface board can be supported by the original equipment distributed Hello packets as packets to maintain neighbor relationships, in this case, the interface board is configured to obtain information corresponding to the Hello packet, and the acquired information generating Hello packets according to the Hello packet as the neighbor relationship of the above-described packet transmission processing.

另外,分布式设备中的接口板还可以配置与路由协议无关的通用监测协议,如BFD协议或OAM协议等,并根据配置的通用监测协议生成探测报文,将探测报文作为所述邻居关系保持报文进行上述的发送处理。 Further, the distributed device interface board may also be configured to monitor common protocol-independent routing protocols, such as the OAM protocol BFD protocol or the like, and according to the general protocol configured to monitor packets generated probe, the probe packet as the neighbor relationship holding the above-described packet transmission processing.

较佳地,在分布式设备中,主用主控板则可以在与所述邻居设备建立邻居关系时,检测所建立的邻居关系的状态,当该邻居关系的状态达到稳定后,向所述接口板发送故障探测触发通知;所述接口板,在接收到故障探测触发通知后,再执行上述的生成邻居关系保持报文的处理。 Preferably, in the distributed device, the main control board may be in establishing a neighbor relationship with the neighbor device, detecting a state of a neighbor is established, when the state of the neighbor relationship stabilized, to the transmission interface board fault detection to trigger a notification; the interface board, after receiving the fault detection notification trigger, and then performs the process described above generates a neighbor relationship packets. 进一步地,所述主用主控板还在检测到所述邻居关系的状态未达到稳定之前,在Hello报文对应的每个报文发送周期到来时,向所述分布式设备的邻居设备发送Hello报文。 Further, before the main control board is also detected by the neighbor relationship state is not stable when Hello packets corresponding to each packet transmission period arrives, the distributed transmitting apparatus to the neighbor device Hello packets.

本发明还提出了一种接口板。 The present invention further provides an interface board. 图4是在本发明一个实施例中提出的接口板内部的结构示意图。 FIG 4 is a schematic view of the interior of the interface board in a forth embodiment of the present embodiment of the invention. 参见图4,分布式设备中的接口板包括:报文生成单元、计时单元和收发单元,其中,报文生成单元,用于生成邻居关系保持报文;计时单元,用于在每次计时到达一个报文发送周期时,向收发单元发送触发通知;收发单元,用于在接收到触发通知后,将报文生成单元生成的邻居关系保持报文发送至外部邻居设备。 Referring to Figure 4, a distributed interface board apparatus comprising: a message generation unit, a timing unit and a transceiver unit, wherein the packet generating unit for generating a neighbor relationship packets; timing unit, for each arrival timing when a packet transmission period, transmitting a trigger to notify the transceiver unit; transceiving unit, configured to, after receiving the notification trigger, the message generation means generates a neighbor relationship holding packets transmitted to the external device neighbor.

参见图4,所述报文生成单元生成邻居关系保持报文的一种实现方式为:所述报文生成单元从所在分布式设备的当前主用主控板中获取Hello报文对应的信息或根据自身配置获取Hello报文对应的信息,并根据获取的该信息生成作为邻居关系保持报文的Hello报文。 Referring to Figure 4, the packet generating unit generates neighbor relationship one implementation of packet: the packet generation unit acquires information corresponding to the Hello packet from the current AMB or distributed devices located according to its own configuration to obtain information corresponding to a Hello packet, and is generated according to the acquired information as a neighbor relationship packets Hello packets.

参见图4,所述报文生成单元生成邻居关系保持报文的另一种实现方式为:所述报文生成单元配置与路由协议无关的通用监测协议,根据通用监测协议生成作为邻居关系保持报文的探测报文。 Referring to Figure 4, the packet generating means generates packet neighbor relationship Another implementation of: monitoring the packet protocol unit generating a generic routing protocol regardless of the configuration, according to the general generate a neighbor relationship monitoring protocol packet probe packet packets.

总之,以上所述仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。 In summary, the above descriptions are merely preferred embodiments of the present invention but are not intended to limit the scope of the present invention. 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。 Any modification within the spirit and principle of the present invention, made, equivalent substitutions, improvements, etc., should be included within the scope of the present invention.

Claims (10)

1.一种保持邻居关系的方法,其特征在于,在分布式设备与其邻居设备中设定邻居关系保持报文,该方法还包括:分布式设备中的接口板生成邻居关系保持报文,并在预先设置的每个报文发送周期到来时,向所述邻居设备发送邻居关系保持报文;所述邻居设备判断在预先设置的保活间隔内是否接收到邻居关系保持报文,如果是,则保持与分布式设备的邻居关系,否则,断开与分布式设备的邻居关系。 1. A method for maintaining neighbor relationships, wherein the neighbor relationship set in distributed device holding apparatus with its neighbor packets, the method further comprising: a distributed device interface board generates a packet neighbor relationship, and when each packet transmission period set in advance the arrival is sent to the neighbor device neighbor relationship packet; the neighbor device determines whether a neighbor relationship keep-alive message within a preset interval, if so, the neighbor relationship with the distributed devices, otherwise, the neighbor relationship is disconnected from the distributed devices.
2.根据权利要求1所述的方法,其特征在于,所述邻居关系保持报文为Hello报文;所述报文发送周期和所述保活间隔分别为Hello报文对应的报文发送周期和保活间隔;所述分布式设备中的接口板生成邻居关系保持报文的步骤包括:分布式设备中的所述接口板从当前的主用主控板中获取Hello报文对应的信息或根据自身配置获取Hello报文对应的信息,并根据获取的该信息生成Hello报文。 2. The method according to claim 1, wherein the neighbor relationship packet is a Hello packet; the packet transmission period and the keep-alive interval, respectively Hello packet sending period corresponding to the packet and a keep-alive interval; the distributed device interface board generates a neighbor relationship packet comprises the step of holding: distributed device interface board in the Hello message to obtain information from the corresponding current or AMB according to its own configuration to obtain information corresponding to a Hello packet, and generates a Hello packet based on the acquired information.
3.根据权利要求2所述的方法,其特征在于,所述Hello报文对应的信息包括:Hello报文完整的内容、发送Hello报文的接口索引和报文发送周期。 3. The method according to claim 2, wherein the information corresponding to the Hello packet includes: complete Hello packets sent and packet transmission interface index periodic Hello packets.
4.根据权利要求1所述的方法,其特征在于,该方法进一步包括:在分布式设备的所述接口板和所述邻居设备中配置与路由协议无关的通用监测协议;所述邻居关系保持报文为通用监测协议的探测报文;所述报文发送周期和所述保活间隔分别为通用监测协议对应的报文发送周期和保活间隔。 4. The method according to claim 1, wherein the method further comprises: configuring universal protocol independent monitoring of the routing protocol in the device interface board and distributed in the neighbor device; the neighbor relationship packet inspection to monitor packets generic protocol; the packet transmission period and the keep-alive interval, respectively corresponding to the common monitoring protocol packet sending period and keep-alive intervals.
5.根据权利要求4所述的方法,其特征在于,所述通用监测协议对应的报文发送周期和保活间隔的时间长度,由通用监测协议根据故障探测敏感度要求设定。 5. The method as claimed in claim 4, wherein the monitoring the universal protocol packet sending period corresponding to the length of time and keep-alive interval, by a general purpose monitoring protocol according to the fault detection sensitivity requirements set.
6.根据权利要求4所述的方法,其特征在于,所述通用监测协议为双向转发探测BFD协议或操作管理维护OAM协议。 6. The method as claimed in claim 4, wherein the monitoring the universal protocol Bidirectional Forwarding Detection BFD session management or maintenance operations OAM protocol.
7.根据权利要求1至6中任意一项所述的方法,其特征在于,该方法进一步包括:分布式设备中当前的主用主控板在与所述邻居设备建立邻居关系时,检测所建立的邻居关系的状态,在所述邻居关系的状态未达到稳定之前,当前的主用主控板在Hello报文对应的每个报文发送周期到来时,向所述分布式设备的邻居设备发送Hello报文,在所述邻居关系的状态达到稳定后,当前的主用主控板向所述接口板发送故障探测触发通知;所述接口板在接收到故障探测触发通知后,执行所述的生成邻居关系保持报文的步骤。 7. The method of any one of the 1-6 claims, wherein the method further comprises: in the current distributed devices AMB when establishing a neighbor relationship with the neighbor device, detecting neighbor relationship established state, a state before the neighbor relationship is not stable current at AMB Hello packets corresponding to each packet transmission period arrives, the distributed device to neighboring devices Hello packets are sent, after the neighbor relationship state stable, the current master MPU sending a failure notification to the trigger probe interface board; the interface board receiving the fault detection trigger notification, the execution generating neighbor relationship steps packets.
8.根据权利要求1至6中任意一项所述的方法,其特征在于,所述接口板为与所述邻居设备直接相连的接口板。 8. The method according to any one of claim 6 claim, wherein said interface board and the interface board is directly connected to the neighboring device.
9.一种接口板,其特征在于,该接口板包括:报文生成单元,用于生成邻居关系保持报文;计时单元,用于在每次计时到达一个报文发送周期时,向收发单元发送触发通知;收发单元,用于在接收到触发通知后,将报文生成单元生成的邻居关系保持报文发送至外部邻居设备。 An interface board, wherein, the interface card comprising: a message generation unit for generating a neighbor relationship message; timer means for counting each time a new packet arrives transmission period, to the transceiver unit sending a trigger notification; transceiving unit, configured to, after receiving the notification trigger, the message generation means generates a neighbor relationship holding packets transmitted to the external device neighbor.
10.根据权利要求9所述的接口板,其特征在于,所述报文生成单元,用于从所在分布式设备的当前主用主控板中获取Hello报文对应的信息或根据自身配置获取Hello报文对应的信息,并根据获取的该信息生成作为邻居关系保持报文的Hello报文;或者,用于配置与路由协议无关的通用监测协议,根据通用监测协议生成作为邻居关系保持报文的探测报文。 10. The interface board according to claim 9, wherein said message generating unit for acquiring information corresponding to a Hello packet from the current AMB located or distributed acquisition device according to its own configuration Hello packets corresponding to information, and the acquired information is generated according to a neighbor relationship packets Hello packets; or, for monitoring a protocol-independent generic configuration and routing protocol, generated according to the general protocol as the neighbor relationship monitoring packets probe packets.
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