CN101350636B - Method and system for link redundant backup base on photoelectric multiplexing port - Google Patents

Method and system for link redundant backup base on photoelectric multiplexing port Download PDF

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CN101350636B
CN101350636B CN 200810119616 CN200810119616A CN101350636B CN 101350636 B CN101350636 B CN 101350636B CN 200810119616 CN200810119616 CN 200810119616 CN 200810119616 A CN200810119616 A CN 200810119616A CN 101350636 B CN101350636 B CN 101350636B
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photoelectric
system
link
redundant
port
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CN 200810119616
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CN101350636A (en )
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鲜明双
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北京星网锐捷网络技术有限公司
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Abstract

本发明提供一种基于光电复用端口的链路冗余备份方法与系统,所述方法包括:将本端设备的光电复用端口的电缆和光纤作为主链路和备份链路连接对端设备;设置本端设备的光电复用端口的工作模式,选择具有相同工作模式的链路建立本端设备和对端设备的通信;检测当前通信链路是否正常,如果正常则保持当前链路的连接;如果不正常,则切换所述本端设备的工作模式,并选择另一条链路建立本端设备和对端设备的通信。 The present invention provides a method based on a link redundancy system, the method comprising the photoelectric multiplexing port: the device connected to the remote end of the photovoltaic device according to the present multiplexing and optical fiber cables as the primary link port and backup link ; the local device is provided with a photoelectric multiplexing port operating mode, select a link having the same mode of operation to establish a local device and a peer communications device; detecting a current communication link is normal, if the normal connection of the current link is maintained ; if not normal, the present operation mode is switched terminal device, and selecting another link and the establishment of the local communication device to the peer device. 本发明使用光电复用口实现链路冗余备份,同时不需要额外的端口资源,相对其他双上行链路冗余备份方案,本发明提供了更简洁的配置方案,更快的拓扑收敛性,在发生链路故障时可以达到50ms内将流量快速的倒换到备份链路上,大大提高了业务的实时备份能力。 The present invention uses a photoelectric complex to implement link redundancy mouth, while no additional port resources, compared to other dual uplink redundancy embodiment, the present invention provides a more compact configuration scheme, the faster convergence of the topology, in the event of a link failure can be achieved within 50ms will be fast switching traffic to the backup link, greatly improving the ability of real-time backup service.

Description

一种基于光电复用端ロ的链路冗余备份方法与系统 The method of any link redundancy photoelectric multiplexing system based on the end ro

技术领域 FIELD

[0001] 本发明关于通信技术领域,特别关于通信链路的故障恢复领域,具体地说是ー种基于光电复用端ロ的链路冗余备份方法与系统。 [0001] The present invention relates to the field of communications technology, particularly regarding the communication link failure recovery in the art, particularly species ー method and system for link redundancy photoelectric ro based multiplexed end.

背景技术 Background technique

[0002] 随着网络规模及应用领域的急速扩张,网络日益成为社会生活中不可或缺的部分,企业与个人的通信与交流都离不开网络的使用。 [0002] With the rapid expansion of the size of the network and applications, the network is increasingly becoming the use of social life, an integral part of business and personal communication and exchanges are inseparable from the network. 随着企业对网络依赖性的増加,网络必须安全可靠,一旦网络服务不可用,可能严重影响企业的生产カ及赢利。 With the enlargement of the enterprise network-dependent increase, the network must be secure, once the network service is not available, may seriously affect the production grades and profit. 要实现较高的可用性,避免出现由于单点故障而导致网络不可用。 To achieve high availability, due to avoid single point of failure caused by network is unavailable. 从全局来看两个通信节点之间应该有冗余链路,并进行拓扑的自动管理。 From a global point of view between two communicating nodes should have redundant links, and automatically manage topology.

[0003] 图I是业界ー种通用的实现双链路上行冗余备份的方案。 [0003] Figure I is a kind of common implementation industry ー duplex path row redundancy scheme. 下面以交换机为例详细说明其原理:交換机A和B都通过两条链路分别上联到交換机C和D,其中一条链路是主链路,处于活跃状态并进行正常的数据交換,另外一条链路是备份链路,需要将其阻塞不能进行数据交换,以避免数据环路的产生。 The following detailed description of example, the switch principle: Switch A and B are linked by two links to the switch C and D, where a link is a primary link in an active state and a normal data exchange, Further backup link is a link, blocking does not need to exchange data, to avoid data loops. 当主链路发生故障(通常包括:主链路的连接线故障,主链路对端的设备或端ロ故障)并断开时,需要自动的取消备份链路的阻塞,使其正常交換。 When the primary link fails (typically comprising: failure of the primary cable link, the primary link to the end devices or end ro failure) and off, an automatic backup link is unblocked, so that the normal exchange. 这样就可以实现链路的冗余备份了。 This enables a redundant backup links. 例如在图I中,正常情况下交換机A和C连接的链路是主链路并进行正常的数据交換,交換机A和D连接的链路是备份链路,需要阻塞。 For example, in FIG I, under normal circumstances switch links A and C are connected to the primary link and the normal data exchange, switch links A and D are connected to the backup link, needs to block. 当交換机A和C的链路断开时,交换机自动打开A和D链路来进行正常的交換,这样即可实现链路冗余备份了。 When the switch A and C of link disconnection, the switch automatically opens links A and D to the normal exchange, thus making a backup link redundancy.

[0004] IEEE802. ID标准介绍了一种用于控制局域网逻辑拓扑的技术,称为生成树协议(Spanning Tree Protocol,简称STP),这个技术就是为了实现链路冗余时断开备份链路,当主链路发生故障时自动打开备份链路的功能。 [0004] IEEE802. ID standard describes a technique for controlling local area network logical topology, called Spanning Tree Protocol (Spanning Tree Protocol, referred to as the STP), this technique is to achieve a backup link is disconnected when the redundant link, when the primary link fails automatic opening backup link. 但是这个协议正常的收敛时间为30秒,也就是说链路从发生故障,到再次恢复,需要30秒的时间,这远远不能满足现在运营商提出的50毫秒内恢复故障的要求。 But the normal protocol convergence time is 30 seconds, which means that a link from a failure to restore again, takes 30 seconds, which is far from meeting the requirements of 50 milliseconds failure recovery now present within the carrier. 同时通过上面的链路可以发现,实现链路冗余备份需要在交换机A、B上面使用两个端ロ,这也加重了客户实现冗余备份的代价。 It found that while the above link, need to implement link redundancy switch A, B ro used above two ends, which also increased the cost of redundancy of customers. 并且,在切换链路时还需要变更端ロ,因此还存在ー个需要重新学习MAC (Media Access Control :媒体接入控制)地址的问题。 And it needs to be changed at time of switching ro end link, so there is also a need to relearn ー MAC (Media Access Control: Media Access Control) address the problem.

[0005] MAC地址为网卡的物理地址,用于对LAN中各个节点进行识别。 [0005] MAC address to a physical address of the network card, a LAN is used to identify each node. 网卡的物理地址通常是由网卡生产厂家烧入网卡,具有全球唯一性。 Network card physical address from the card manufacturer typically burned into the card, having a globally unique. 在以太网中,ー个以太网报文带有发出这个报文的主机MAC地址(源MAC),也带有接收这个报文的主机MAC地址(目的MAC),交换机通过学习检查报文的源MAC地址,并将这个地址和接收到这个报文的端ロ关联起来形成ー个MAC地址表,当下次接收ー个报文的目的MAC地址为学习的地址时,交換机就直接将报文转发到这个MAC地址关联的端口上。 In Ethernet, the Ethernet packet source ー sent with this message the MAC address (source MAC), also receives the packets with the MAC address (destination MAC), the switch checks packets by learning MAC address, and this address will receive this message ends ro ー associate a MAC address table is formed, when the address received ー a next packet destination MAC address is learned, the switch forwards the packet directly to the port associated with this MAC address. 即MAC表很大程度上决定了报文的转发决策。 MAC table that is largely determines the packet forwarding decisions. 在采用双链路冗余备份时,当进行链路切换时,由于使用的端ロ发生了变化,原先的MAC地址表不能再正确的指导报文的转发,所以启用备份链路时需要重新学习MAC地址表。 When using dual-link redundancy, when a link switching, end the use of ro ​​has changed, the original MAC address table can not correctly guide packet forwarding again, so it is necessary to re-learn when backup link MAC address table.

[0006] 申请号为200610000565. 5,公开号为CN101001165A,发明名称为“具有冗余端ロ的网络故障恢复方法”的中国发明专利申请作为本案的现有技术合并于此。 [0006] Application No. 200610000565.5, Publication No. CN101001165A, entitled "Network with redundant fault recovery method ends ro" in Chinese patent application as prior art in this case is incorporated herein.

发明内容 SUMMARY

[0007] 本发明的目的是提供一种基于光电复用端ロ的链路冗余备份方法与系统,该系统采用光电复用端ロ的电缆和光纤作为主链路和备份链路,能够实现快速的链路故障恢复,解决了现有技术采用双上行链路和STP协议实现链路冗余备份时故障恢复时间长、浪费端ロ以及需要重新学习MAC地址等缺陷。 [0007] The object of the present invention is to provide a method and system for link redundancy photoelectric end ro based multiplexing, the multiplexing system using optical cables and optical fiber end ro as the primary link and backup links, can be achieved rapid link failure recovery, solves the prior art dual uplink STP protocol and the link redundancy recovery time is long, and the waste end ro need to relearn the MAC address and other defects.

[0008] 为实现以上发明目的,本发明ー实施例提供一种基于光电复用端ロ的链路冗余备份方法,所述方法包括:将本端设备的光电复用端ロ的电缆和光纤作为主链路和备份链路连接对端设备;设置本端设备的光电复用端ロ的工作模式,选择具有相同工作模式的链路建立本端设备和对端设备的通信;检测当前通信链路是否正常,如果正常则保持当前链路的连接;如果不正常,则切换所述本端设备的工作模式,并选择另一条链路建立本端设备和对端设备的通信。 [0008] In order to achieve the above object of the invention, the present invention provides a link ー embodiment redundancy photoelectric multiplexing method based on ro end, the method comprising: multiplexing the photoelectric device of the local end of the cable and fiber ro as the primary link and the device connected to the remote backup link; the local device is provided with a photoelectric end ro multiplexing operation mode, select a link having the same mode of operation to establish a local device and a peer communications device; detecting a current communication link path is normal, if the normal connection of the current link is maintained; if not normal, the present operation mode is switched terminal device, and selecting another link and the establishment of the local communication device to the peer device.

[0009] 为实现以上发明目的,本发明另一实施例提供一种基于光电复用端ロ的链路冗余备份系统,所述系统包含光电复用设备,所述光电复用设备之间采用光电复用端ロ的电缆和光纤作为主链路和备份链路进行连接;所述光电复用设备包括:工作模式设置単元,设置所述光电复用设备的光电复用端ロ的工作模式,使相连接的光电复用设备在一共同时段内具有相同的工作模式;通信链路协商単元,检测相连接的光电复用设备的工作模式,当检测到相同的工作模式时,选择与该相同的工作模式对应的链路建立光电复用设备之间的通信;链路检测切换单元,检测当前链路是否正常通信,如果正常则保持当前链路的连接;如果不正常,则选择另一条链路建立光电复用设备之间的通信。 [0009] In order to achieve the above object of the invention, a further embodiment of the present invention provides a photoelectric link redundancy backup system based on the multiplexed side ro, said system comprising a photoelectric demultiplexing device using the photoelectric between multiplexers optical multiplexing and connected as a primary backup link with the link ends of the cable and fiber ro; the photoelectric multiplexing equipment comprising: a working mode radiolabeling element, the photoelectric mode of operation is provided a photoelectric multiplexers multiplexing the end ro, Optical connecting the phase multiplexing device having the same mode of operation within a common period; communication link negotiation radiolabeling element, photoelectric operation mode multiplexers connected to the detection, when detecting the same operation mode, select the same operating mode corresponding to a communication link is established between the photoelectric multiplexers; link detecting switch means for detecting whether the current link normal communication, if properly connected to the current link is maintained; if not normal, the other strand is selected Road to establish communication between the photoelectric multiplexing equipment.

[0010] 为实现以上发明目的,本发明又一实施例提供一种基于光电复用端ロ的链路冗余备份系统,所述系统包含光电复用设备;所述光电复用设备将光电复用端ロ的电缆和光纤作为主链路和备份链路分别连接不同对端设备的电口和光ロ;所述光电复用设备包括:エ作模式设置単元,设置所述光电复用设备的光电复用端ロ的工作模式;通信链路协商単元,检测与所述工作模式对应的链路是否可用,如果可用则通过该链路建立光电复用设备和对端设备的通信;如果不可用,则更换所述工作模式并重新检测;链路检测切换单元,检测当前通信链路是否正常,如果正常则保持当前链路的连接;如果不正常,则选择另一条链路建立所述光电复用设备和对端设备之间的通信。 [0010] In order to achieve the above object of the invention, further embodiments provide a redundant backup system link ends ro photoelectric multiplexed based, said system comprising a photoelectric demultiplexing device according to the present invention; multiplexing said Optical Multiplexer photoelectric ro end with the cable and fiber links as primary and backup links connecting different electrical and fiber ro peer device respectively; the photoelectric multiplexing equipment comprising: setting the operation mode radiolabeling Ester element, provided the photoelectric photoelectric multiplexers ro multiplex operating mode of the terminal; communication link negotiation radiolabeling element, corresponding to the working mode detects whether the link is available, if available, and a communication establishing photoelectric multiplexing equipment to the peer device over the link; if not available, replace the working mode and retested; handover link detection means for detecting a current communication link is normal, if the normal connection of the current link is maintained; if not normal, select another link establishing the multiplexed photo communication between the device and the peer device.

[0011] 本发明使用光电复用ロ实现链路冗余备份,同时不需要额外的端ロ资源,相对其他双上行链路冗余备份方案,本发明提供了更简洁的配置方案,更快的拓扑收敛性,可以达到50ms内将流量快速的倒换到备份链路上,大大提高了业务的实时备份能力。 [0011] The present invention is implemented using a photo multiplex link redundancy ro, ro terminal while no additional resources, compared to other dual uplink redundancy embodiment, the present invention provides a more compact configuration scheme, the faster topology convergence, can achieve fast traffic is switched to the backup link within 50ms, greatly improving the ability of real-time backup service.

附图说明 BRIEF DESCRIPTION

[0012] 图I为现有技术中ー种通用的实现双链路上行冗余备份的系统图; [0012] Figure I is a system diagram ー species common implementation prior art duplex path redundancy backup line;

[0013] 图2为本发明实施例I的一种网络拓扑图; [0013] A network topology in FIG. 2 of the Example I embodiment of the present invention;

[0014] 图3为本发明实施例I光电复用设备30的功能框图; [0014] Figure 3 a functional block diagram of the embodiment 30 I photoelectric multiplexers embodiment of the present invention;

[0015] 图4为本发明实施例I光电复用端ロ工作模式示意图; [0015] Figure 4 a schematic diagram of a multiplex terminal of the photoelectric I ro operation mode embodiment of the present invention;

[0016] 图5为本发明实施例I进行链路冗余备份的流程图;[0017] 图6为本发明实施例2的连接关系示意图; [0016] FIG 5 Example I link redundancy is a flowchart of the present invention; [0017] FIG. 6 is a schematic connection relationship Example 2 of the present invention;

[0018] 图7为本发明实施例2的光电复用设备70的功能框图; [0018] FIG 7 70 photoelectric functional block diagram of multiplexing equipment according to the second embodiment of the present invention;

[0019] 图8为本发明实施例2两个周期函数的图形示例; [0019] Example 2 a graphical example of FIG. 8 two periodic functions of the embodiment of the present invention;

[0020] 图9为本发明实施例2两个光电复用端口在同一起点执行函数图形; [0020] FIG. 9 performs the same function pattern starting two photoelectric Example 2 embodiment of the invention the multiplexing port;

[0021] 图10为本发明实施例2两个光电复用端口执行函数起点相差3T时的图形; [0021] FIG. 10 is a function of the starting point of the time difference between the pattern 3T performs multiplexing port Example 2 of the present invention, two photoelectric embodiment;

[0022] 图11为本发明实施例2在电模式出现故障时两个端口执行函数图形; [0022] Figure 11 performs two functions graphics port when the electrical failure modes in Example 2 of the present invention;

[0023] 图12为本发明实施例2进行链路冗余备份的流程图。 [0023] FIG. 12 is a flowchart for link redundancy Example 2 embodiment of the present invention.

具体实施方式 detailed description

[0024] 为使本发明的目的、技术方案和优点更加清楚明白,下面结合实施方式和附图,对本发明做进一步详细说明。 [0024] To make the objectives, technical solutions, and advantages of the present invention will become apparent from the following description and drawings in conjunction with embodiments of the present invention is described in further detail. 在此,本发明的示意性实施方式及其说明用于解释本发明,但并不作为对本发明的限定。 Here, exemplary embodiments of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0025] 实施例I : [0025] Example I:

[0026] 图2为本实施例的一种网络拓扑图。 [0026] A network topology of FIG. 2 embodiment of the present embodiment. 本实施例以交换机为例进行说明,实际网络中的通信设备在进行数据传输时一般都可以使用本发明的技术方案来进行链路备份。 In this embodiment, the switch will be described as an example, can generally be used when the aspect of the present invention, the actual network communication device for performing data transfer link backup. 本实施例的交换机具备光电复用端口,通过将光电复用端口的电缆和光纤分别作为主链路和备份链路连接对端设备的电口和光口,以实现链路的冗余备份。 The switch of the present embodiment includes a photoelectric multiplexing port redundancy, electrical and fiber connected to the remote device through the cable and a photoelectric optical multiplexing port as the primary link and backup link, in order to achieve the link. 光电复用端口既可以连接光纤也可以连接电缆,还可以同时连接光纤和电缆,但在同一时间只能处于一种工作模式。 Optical multiplexing port connected to the optical fiber may be connected to either a cable, it can be connected simultaneously and fiber optic cables, but at the same time in only one mode. 用户可以通过配置命令选择使其工作在光模式还是电模式。 The user can choose to make operation of the optical mode or electric mode through the configuration command. 选择光模式时端口即通过光纤和对端通信,选择电模式时端口即通过电缆和对端通信。 I.e., the port is selected by an optical fiber light mode and peer communication, i.e. through the cable port and the correspondent power mode is selected.

[0027] 如2图所示,本实施例的交换机A和B分别用光电复用端口连接交换机C和D,A和B都提供光电复用口,C和D则提供分离的电口和光口。 [0027] The 2 shown in FIG, switches A and B of the present embodiment are represented by the photoelectric multiplexed switch port connections C and D, A and B both provide a photoelectric multiplexing port, C and D provides separate electrical and fiber with . 在一种实施方式中,A采用光电复用口连接C的电口和D的光口;B采用光电复用口连接C的光口和D的电口。 In one embodiment, A photoelectric multiplexed optical interface port to connect electrical interface of the C and D; B photoelectric multiplexing port connected by electric light ports C and D with the port. 正常情况下,启用电口(光口)作为主链路,当电口(光口)发生故障断开时,自动将端口的工作模式切换到光口(电口),这样交换机A和B仅仅需要一个光电复用端口即可实现双上行冗余链路。 Under normal circumstances, enable the electrical interface (optical interface) as the primary link, when the electrical interface (optical interface) OFF failure, the operating mode automatically switches to the optical interface port (electrical port), so that only the switches A and B a photoelectric need multiplex uplink port to dual redundant links.

[0028] 图3为本实施例光电复用设备30 (如图2中的交换机A、B)的功能框图。 The functional block (2 switches A, B in FIG.) Optical Multiplexer Example 30 [0028] 3 of the present embodiment FIG. 如图所示,为了实现光电复用端口的链路冗余备份的功能,该光电复用设备包括:工作模式设置单元301,设置所述光电复用设备的光电复用端口的工作模式;通信链路协商单元302,检测与所述工作模式对应的链路是否可用,如果可用则通过该链路建立光电复用设备和对端设备的通信;如果不可用,则更换所述工作模式并重新检测;链路检测切换单元303,检测当前通信链路是否正常,如果正常则保持当前链路的连接;如果不正常,则选择另一条链路建立所述光电复用设备和对端设备之间的通信。 As shown, in order to achieve optical multiplexing function redundant backup link port, the optoelectronic multiplexing equipment comprising: operation mode setting unit 301 sets the operation mode of the photoelectric photoelectric multiplexers multiplexing port; communication link negotiation unit 302, corresponding to the working mode detects whether the link is available, if available, and a communication establishing photoelectric multiplexing equipment to the peer device over the link; if not available, then the replace operation mode and re detection; link detection switching unit 303, detects the current communication link is normal, if the normal connection of the current link is maintained; if not normal, select another link is established between the peer device and the photoelectric Multiplexer Communication.

[0029] 图4为本实施例光电复用端口工作模式意图,其中空白格表电传输、灰色格表示光传输。 [0029] Figure 4 photoelectric multiplexing port intended mode of operation of the present embodiment, wherein the electrical transmission whitespace table, gray bars indicate the light transmission. 在一较佳实施方式中,当系统上电时,工作模式设置单元301将工作模式设置为在光传输模式和电传输模式之间来回转换(如图4所示),这种转换可以设定一个转换的周期,也可以没有固定长度的周期,但是同一工作模式至少要保持时间T,该时间T为硬件检查通信是否正常所需要的时间。 In a preferred embodiment, when the system is powered on, the operation mode setting unit 301 to set the operation mode to switch back and forth between a light transmitting mode and the electrical transmission mode (FIG. 4), this conversion can be set a conversion cycle, the cycle may be no fixed length, but at least to maintain the same mode of operation time T, the time T is time to check whether the hardware required for normal communication.

[0030] 假设与光电复用设备30连接的对端设备(如图2中的交换机C、D)在启动上有先后顺序,并且当工作模式变为电传输模式时刚好检测到电缆链路(如图2中的交换机C)已经准备就绪,则采用电缆链路作为主链路建立通信。 [0030] Suppose the remote device 30 connected to the photoelectric multiplex device (switch C in FIG. 2, D) with a sequence in the startup, and when the operation mode to the transmission mode just detected electrical cable link ( switch C in FIG. 2) is ready, cable is used to establish a communication link as the primary link. 由于将工作模式设置为循环交替的方式,无论是电缆还是光纤就绪,都可以检查到连接并选择一种进行连接。 Since the operation mode is set to the cycle in an alternating manner, or whether it is an optical fiber cable ready, can be connected to check and select a connection. 当交换机A的光电复用端口采用电缆链路与交换机C连接出现故障时,光电复用端口将工作模式转换为光传输模式,由于交换机A和D之间存在光纤链路,可以在时间T内检测到,并将该光纤链路作为备份链路进行传输。 When the photoelectric switch A complex with the switch ports of the cable C connected to the link failure, port photoelectric converting multiplexing optical transmission mode to the operation mode, due to the presence of fiber links between Switch A and D, the time T can be It is detected, and the optical fiber transmission line as a backup link.

[0031 ] 还有一种特殊的情况就是,如果交换机A和D之间的光纤链路也不能用,那么本实施例的工作模式设置单元将再次转换工作模式为电传输模式以检测电缆链路是否可用,此时工作模式设置单元301仍然可以采用在光传输模式和电传输模式之间来回转换的方式来进行链路的检测。 [0031] There is a special case, if the optical fiber link between the switch A and D can not, then the mode of operation of the present embodiment is provided unit re-converts the electrical transmission mode to the operation mode to detect whether the cable link available, at this time the operation mode setting unit 301 can still use the transmission mode between the light and the electrical transmission mode switching back and forth manner to detect the link.

[0032]因此,本实施例中的工作模式设置单元将工作模式设置为在光传输模式和电传输模式之间来回转换不仅能够在一开始确定一条传输的链路,而且在传输过程中出现故障之后也可以快速转移到一条可用的链路上。 [0032] Thus, in the embodiment of the present embodiment the operation mode setting unit setting the operation mode to switch back and forth between a light transmitting mode and the electrical transmission mode can be determined only at the beginning of a transmission link, and the failure in the transmission process after it may be quickly transferred to an available link. 这种工作模式来回转换的设置仅为本实施例的一种较佳实施方式,实际中可以预先设定一种工作模式并等到与该工作模式对应的链路就绪后再建立通信,在发生故障之后则直接切换至另一条链路即可,如果另一条链路也不可用则会等待该链路恢复,而不会再次切换至原来出故障的链路,或者终止此次连接而开始新的连接建立过程。 This mode of operation is provided back and forth the preferred embodiment only one kind of embodiment of the present embodiment, the actual mode of operation may be preset and wait corresponding to the operation mode after establishing a communication link is ready at failure after the direct link to switch to another, if another link is not available it will wait for the link is restored, but not switched back to the original failed link, or terminate the connection and start a new connection establishment.

[0033] 图5为本实施例进行链路冗余备份的流程图。 [0033] FIG 5 is a flowchart of the link redundancy present embodiment. 如图所示: as the picture shows:

[0034] 步骤S501,将本端设备的光电复用端口的电缆和光纤作为主链路和备份链路分别连接不同对端设备的电口和光口。 [0034] step S501, the end of the photovoltaic device of the present complex and an optical fiber cable port as the primary link and backup links connecting different electrical and fiber to the end device, respectively.

[0035] 步骤S502,设置本端设备的光电复用端口的工作模式,本实施例在初始化阶段可以将工作模式设置为在电传输和光传输之间进行来回转换,以尽快确定一条通信链路。 [0035] In step S502, the local device is provided with a photoelectric multiplexing port operating mode, the operating mode of the present embodiment may be set at the initialization stage switch back and forth between the electrical transmission and optical transmission, a communication link to determine as soon as possible.

[0036] 步骤S503,检测与设置的工作模式对应的链路是否可用。 [0036] step S503, the operation mode detection provided corresponding to the link is available. 由于无法控制对端设备启动的情况,因此需要来回检测是否有匹配的链路存在。 Since the terminal apparatus can not control the start of the case, it is necessary to detect whether a matching round link exists. 如果有则进入步骤S504,如果没有则继续步骤S502。 If it proceeds to step S504, if not then continue to step S502.

[0037] 步骤S504,采用与工作模式对应的链路建立通信。 [0037] step S504, the operation mode corresponding to using the communication link establishment.

[0038] 步骤S505,检测当前通信链路是否正常,如果正常则保持当前链路的连接,如果不正常则进入步骤S506。 [0038] step S505, detects the current communication link is normal, if the normal current link connection is maintained, if not normal, the process proceeds to step S506.

[0039] 步骤S506,改变工作模式,切换到另一条备份链路建立通信。 [0039] In step S506, the operation mode change, switching to another backup communication link setup.

[0040] 实施例2 : [0,040] Example 2:

[0041] 图6为本实施例的连接关系示意图。 [0041] FIG. 6 is a schematic view of a connection relationship of the present embodiment. 如图所示,本实施例考虑另一种链路冗余备份的方式。 As shown, for example, consider an alternative embodiment of link redundancy present embodiment. 端口F和端口G都为光电复用端口,在光电复用设备之间采用光电复用端口的电缆和光纤作为主链路和备份链路进行连接。 Port F and G are ports for connecting the photoelectric multiplexed optical cable and port as the primary link and backup link port, between the photoelectric photoelectric complex multiplex equipment.

[0042] 图7为本实施例的光电复用设备70的功能框图。 [0042] Figure 7 is a functional block diagram of the photoelectric multiplexing device 70 of the embodiment. 如图7所示,光电复用设备70包括:工作模式设置单元701,设置所述光电复用设备的光电复用端口的工作模式,使相连接的光电复用设备在一共同时段内具有相同的工作模式;通信链路协商单元702,检测相连接的光电复用设备的工作模式,当检测到相同的工作模式时,选择与该相同的工作模式对应的链路建立光电复用设备之间的通信;链路检测切换单元703,检测当前链路是否正常通信,如果正常则保持当前链路的连接;如果不正常,则选择另一条链路建立光电复用设备之间的通信。 7, the photoelectric multiplexing equipment 70 comprising: operation mode setting unit 701 sets the multiplex equipment photoelectric photoelectric multiplexing mode of the port, the phase multiplexing device having a photoelectric connected together in a same period a communication link between the negotiating unit 702 detects the operating mode of the multiplex device is connected to the photo, when detecting the same mode of operation, corresponding to the selected mode of operation of the same link establishment photoelectric multiplexers; operating mode communication; link detection switching unit 703, detects the current communication link is normal, if the normal connection of the current link is maintained; if not normal, select another communications link is established between the photoelectric multiplex equipment.

[0043] 由于本实施例中是两个光电复用接口连接,当两个设备采用相同的工作模式才能建立通信连接。 [0043] Since the present embodiment is connected to two photoelectric multiplexed interfaces, when the two devices use the same mode of operation to establish a communication connection. 因此,本实施例的工作模式设置单元701需要将工作模式设置为:使相连接的光电复用设备在一共同时段内具有相同的工作模式。 Accordingly, the work mode of the present embodiment is provided means 701 to shift the mode: the phase photoelectric multiplexing equipment connected with the same mode of operation in a common period. 这样在一开始就能确定一条链路来建立通信。 Such a link can be determined at the outset to establish communication. 并且,当发现一条链路断开时,会自动转换工作模式而切换到另一条备用链路。 And when it finds a link is disconnected, automatically converting the operation mode is switched to another standby link. 以下给出一个具体的例子来详细说明本实施例所采用的具体的工作模式设置方式,以及如何实现链路冗余切换的。 The following gives a specific example to illustrate the mode of operation in detail arrangement employed in Example embodiments, as well as how to implement link redundancy switching.

[0044] 本实施例采用以下两个周期函数f\(X)、f2(x)来设置光电复用端口的工作模式,其中: [0044] The present embodiment uses the following two periodic functions f \ (X), f2 (x) to the operation mode set by the photoelectric multiplexing port, wherein:

μ{χ) = \{χ^Τ,{1,Λ· 3)Γ) U Kk + 4)T, (k + 5)D)0045 [A (x) = 0(xe [(k + 3)T, (k+4)T) U [(k + 5)T, (k + 8)T)) μ {χ) = \ {χ ^ Τ, {1, Λ · 3) Γ) U Kk + 4) T, (k + 5) D) 0045 [A (x) = 0 (xe [(k + 3) T, (k + 4) T) U [(k + 5) T, (k + 8) T))

I/2(x) = l(xe[(k +1) T,(k + 2)T)U[(^ + 5)T,(k + 8)71)) I / 2 (x) = l (xe [(k +1) T, (k + 2) T) U [(^ + 5) T, (k + 8) 71))

[0046] \f2 (x) = 0(x 6 [kT, (k +1)7) U [(k + 2)T, (k + 5)Γ)) [0046] \ f2 (x) = 0 (x 6 [kT, (k +1) 7) U [(k + 2) T, (k + 5) Γ))

[0047] 图8为这两个周期函数的图形示例。 [0047] FIG. 8 is a graphical example of these two periodic functions. 空白格表示函数值取I、电传输模式;灰色格表示函数值取O、光传输模式。 Whitespace represents a function taking a value I, power transmission mode; gray bars indicate the function value takes O, the optical transmission mode. K为能被8整除的自然数,函数的周期为8T,其中T为硬件检查通信是否正常所需要的时间。 K is a natural number divisible by eight can be a periodic function of 8T, where T is the time to check whether the hardware required for normal communication.

[0048] 本实施例的工作原理为:在系统初始化时,将端口F、G的工作模式设置采用函数f\(x);当端口从电模式变成断开时,系统可以发现连接断开并采用函数400对端口的工作模式进行设置;当端口从光模式变成断开时,系统可以发现连接断开并采用函数400对端口的工作模式进行设置。 [0048] The working principle of this embodiment is: at system initialization, port F., The operation mode is set using the function G f \ (x); when the port becomes disconnected from the electrical mode, the system can be found disconnected function 400 and using the working mode of the port is set; and when the port becomes disconnected from the light mode, the system can be found using function 400 and disconnect the working mode of the port is set. 当系统检查到通信正常时,停止函数的执行,即保持之前的工作模式。 When the system checks to normal communication, stop the execution of the function, i.e., to maintain the previous mode of operation. 下面证明采用以上工作模式的设置方式无论在何种情况下都能正常通信: The following demonstrate the use of the above arrangement regardless of the operating mode can be circumstances in which normal communication:

[0049]( 一)系统刚刚初始化时,两个端口选择的函数都为f\(x)。 [0049] (a) When the system has just initialization, the function of the two ports are selected f \ (x). 当两个端口执行这个函数的起点不同时(即两个系统上电时间不同),无论两个函数如何平移(表示执行的起点不同),都能够在至少T个时间段内使这两个端口处于同一工作模式。 When the starting point of the two ports to perform this function is not the same (that is, two different electrical systems time), regardless of how the two function translation (representing different starting point execution), are able to make these two ports at least a period of time T work in the same mode.

[0050] 例如,图9是表示这两个端口是在同一个起点开始执行函数,那么可以在[kT,(k+3) T)这3Τ个时间段内使光电复用端口处于相同的电模式,如果这两个端口的电缆连接正常,那么经过这3Τ个时间,一定可以检查到并通过电缆建立通信。 [0050] For example, FIG. 9 shows the two ports is a starting point perform the same electrical function, it can be multiplexed in the photoelectric [kT, (k + 3) T) which 3Τ a port in the same period in mode, if the two cable ports are connected properly, then after this 3Τ time, will be able to check and establish communication through the cable. 如果这两个端口的光纤连接正常,在[(k+3)T,k+4)T)这个时间段内处于相同的光模式,也一定可以检查到并通过光纤建立通信。 If the two optical ports connected to the normal, the [(k + 3) T, k + 4) T) of this period of time in the same light pattern, and must also be checked to establish communication through the optical fiber.

[0051] 再例如,图10为端口F比端口G提前3T个时间执行的示意图,可以发现在端口G执行T个时间后,端口F和G都处于空白格,端口G执行3T个时间后,端口F和G都处于灰色格,这样无论端口F和G是采用什么方式连接,也都可以检查到相同的工作模式并建立通信。 [0051] For another example, FIG. 10 as Port F ratio port G 3T schematic diagram of time to advance the implementation can be found in the port G execution T time, ports F and G are in a blank cell, after 3T time ports G execution, port F and G are in gray cells, so that both ports F and G are connected in what way, can also be checked to the same mode of operation and establish communication. 其他情况可以做类似的分析,由于这两个函数都是周期函数,只要在一个周期内穷举即可。 Other cases could do a similar analysis, because these two functions are periodic functions, as long as exhaustive in one cycle.

[0052] ( 二)假如端口由光模式变成故障,这时两个端口都执行函数(X),参考图9可以发现[0,τ)内设置为工作在电模式,如果系统有电缆连接,那么在T个时间内一定可以检查到相同的工作模式。 [0052] (ii) if the fault port into a light pattern, when both ports perform the function (X-), provided with reference to FIG 9 can be found in [0, τ) to work in the power mode, if the system has a cable connection , then the time T will be able to check the same mode of operation.

[0053](三)假如端口是由电模式变成故障,这时两个端口都执行函数f2 (x),处理情况如图11所示:可以发现系统在[ο,τ)内设置为工作在光模式,如果系统有光纤连接,那么在T个时间内一定可以检查到。 [0053] (c) If the port is turned into an electrically failure mode, when both ports perform the function f2 (x), where the processing shown in Figure 11: the system can be found in [o, [tau] is set to operate within) in the light mode, if the system has an optical fiber connector, then the time constant T can be checked.

[0054] 需要说明的是,本实施例采用以上两个周期函数对工作模式的设置和故障恢复时的切换控制仅用于说明本发明,而不用于对本发明进行限定。 [0054] Incidentally, the present embodiment employs two or more periodic functions of the switching control when an operation mode is provided for illustration only and Recovery of the present invention is not intended to limit the present invention. 实际中还可以采用多种方式进行该设置,需要满足的条件是:使相连接的光电复用设备在一共同时段内具有相同的工作模式,并尽量使链路切换时间缩短。 In practice a variety of ways may also be used provided the conditions to be met are: the phase photoelectric multiplexing device connected with the same mode of operation within a common time period, and to try to make the link switching time is shortened.

[0055] 采用本发明的技术方案,在链路检查的时间T内可以恢复故障,链路故障恢复时间快。 [0055] The technical solution of the present invention, in the inspection time T may be the link failure recovery, rapid link failure recovery time. 由于T表示硬件检查通信是否正常的时间,这个时间一般都很短,会低于50ms,在实际使用中还可以进行调整,所以本发明对业务的实时恢复提供了更好支持。 Since T indicates whether the communications hardware checks the normal time, this time is generally very short, will be less than 50ms, can also be adjusted in actual use, the invention provides for real-time business recovery better support. 并且由于本发明减少了实现冗余备份的端口,也不需要再次学习MAC地址表等转发表项。 And since the present invention reduces the port redundant backup, you do not need to learn the MAC address forwarding entries and so on again. 该光电复用自动切换方法不仅仅可以通过软件实现,还可以通过硬件实现此,以便支持光电复用自动切换。 The photoelectric multiplexing method is automatically switched only by software, this may also be implemented by hardware, in order to support automatic switching photoelectric reuse.

[0056] 图12为本实施例采用光电复用端口进行链路冗余备份的流程图。 [0056] FIG 12 a flow chart link using optical multiplexing port redundancy is present embodiment. 如图所示: as the picture shows:

[0057] 步骤S1201,将本端设备的光电复用端口的电缆和光纤作为主链路和备份链路连接同一个对端设备的光电复用端口。 [0057] Step S1201, and the backup link as the primary link is connected with a photoelectric device side multiplexing port of the photovoltaic device by multiplexing the local cable and fiber ports.

[0058] 步骤S1202,设置本端设备和对端设备的光电复用端口的工作模式,使本端设备和对端设备在一共同时段内具有相同的工作模式。 [0058] step S1202, the local device is provided and photoelectric device ends the multiplexing mode of the port, so that the local device and the remote device having the same mode of operation in a common period. 该工作模式可以采用多种方式进行设置,只要能满足以上要求。 This mode of operation may be set in various ways, as long as it satisfies the above requirements.

[0059] 步骤S1203,检测本端设备和对端设备的工作模式。 [0059] step S1203, the local device and detecting the operating mode of the terminal device.

[0060] 步骤S1204,判断本端设备和对端设备的工作模式是否相同? [0060] step S1204, the terminal device and determines whether the present operation mode of the same end of the device?

[0061] 步骤S1205,如果相同,则采用与该相同的工作模式对应的链路建立通信,如果不同则继续检测。 [0061] step S1205, the if the same is used corresponding to the same mode of operation to establish a communication link, if different determining.

[0062] 步骤S1206,检测当前通信链路是否正常? [0062] step S1206, the detected current communication link is normal? 如果正常则保持当前链路的连接。 If the normal current link connection is maintained.

[0063] 步骤S1207,如果不正常则切换到另一条链路建立通信。 [0063] step S1207, the handover is not normal if another link to establish communication.

[0064] 本发明使用光电复用口实现链路冗余备份,同时不需要额外的端口资源,相对其他双上行链路冗余备份方案,本发明提供了更简洁的配置方案,更快的拓扑收敛性,可以达到50ms内将流量快速的倒换到备份链路上,大大提高了业务的实时备份能力。 [0064] The present invention uses a photoelectric complex to implement link redundancy mouth, while no additional port resources, compared to other dual uplink redundancy embodiment, the present invention provides a more compact configuration scheme, the faster topological convergence can be achieved fast traffic is switched to the backup link within 50ms, greatly improving the ability of real-time backup service.

[0065] 以上所述的具体实施方式,对本发明的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施方式而已,并不用于限定本发明的保护范围,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 [0065] The foregoing specific embodiments, objectives, technical solutions, and advantages of the invention will be further described in detail, it should be understood that the above descriptions are merely specific embodiments of the present invention, but not intended to limit the scope of the present invention, all within the spirit and principle of the present invention, any changes made, equivalent substitutions and improvements should be included within the scope of the present invention.

Claims (10)

  1. 1. 一种基于光电复用端ロ的链路冗余备份方法,其特征在于,所述方法包括: 将本端设备的光电复用端ロ的电缆和光纤作为主链路和备份链路连接对端设备; 设置本端设备的光电复用端ロ的工作模式,在初始阶段将工作模式设置为在电传输和光传输之间进行来回转换,选择具有相同工作模式的链路建立本端设备和对端设备的通信; 检测当前通信链路是否正常,如果正常则保持当前链路的连接;如果不正常,则切换所述本端设备的工作模式,并选择另一条链路建立本端设备和对端设备的通信。 CLAIMS 1. A method for link redundancy photoelectric ro based multiplexing end, characterized in that, the method comprising: multiplexing the photoelectric device of the local end of the cable and fiber ro as the primary and backup links connecting link peer device; photovoltaic device is provided according to the present terminal end ro multiplexed operating mode at the initial stage of the operation mode is set to convert back and forth between the electrical transmission and optical transmission, select a link having the same mode of operation and establishing a local device the communication terminal device; detecting a current communication link is normal, if the normal connection of the current link is maintained; if not normal, the device ends the present operation mode is switched, and selecting another link and the establishment of a local device the communication terminal device pair.
  2. 2.根据权利要求I所述的方法,其特征在于,将本端设备的光电复用端ロ的电缆和光纤作为主链路和备份链路连接对端设备,包括: 将本端设备的光电复用端ロ的电缆和光纤作为主链路和备份链路连接同一个对端设备的光电复用端ロ。 2. The method as claimed in claim I, wherein the backup link as the primary link and the photoelectric devices connected to the remote end of the multiplexing apparatus according ro the end of the cable and fiber optics, comprising: a photovoltaic device according to the present end complex as the primary link and backup link connecting the same end of photoelectric devices multiplexing end ro ro with the end of the cable and optical fiber.
  3. 3.根据权利要求2所述的方法,其特征在于,选择具有相同工作模式的链路建立本端设备和对端设备的通信,包括: 检测对端设备的光电复用端ロ的工作模式,当检测到对端设备和本端设备的工作模式相同吋,选择该相同工作模式所对应的链路建立本端设备和对端设备的通信。 3. The method according to claim 2, characterized in that, to select a link having the same mode of operation and establishing a local device communication peer apparatus, comprising: a photoelectric detection operation mode multiplexing device side end of ro, when it is detected for the same operating mode inch local device and the remote device, select the operating mode corresponding to the same link setup local peer devices and communication devices.
  4. 4.根据权利要求3所述的方法,其特征在于,所述方法还包括: 设置对端设备光电复用端ロ的工作模式,使本端设备和对端设备在一共同时段内具有相同的工作模式,所述共同时段大于或等于所述本端设备和对端设备进行硬件检测所需的时间。 4. The method according to claim 3, characterized in that, said method further comprising: setting the operation mode of the remote device multiplexed photoelectric ro the end, so that the local device and the remote device having the same period in a common mode of operation, said common time period greater than or equal to the local terminal device and the time required for hardware detection devices.
  5. 5.根据权利要求4所述的方法,其特征在于,设置本端设备光电复用端ロ的工作模式,以及设置对端设备光电复用端ロ的工作模式,包括: 将本端设备的光电复用端ロ以及对端设备的光电复用端ロ设置为在光传输模式和电传输模式之间进行周期性交替。 5. The method as claimed in claim 4, wherein the working mode of the local terminal apparatus ro photoelectric multiplexed operating modes, and the photovoltaic devices disposed on the end side ro multiplexed, comprising: a photovoltaic device according to the present end ro multiplexing and end terminal side of the photoelectric multiplexing apparatus ro set periodically alternate between a transmission mode and a light power transmission mode.
  6. 6.根据权利要求I所述的方法,其特征在于,将本端设备的光电复用端ロ的电缆和光纤作为主链路和备份链路连接对端设备,还包括: 将本端设备的光电复用端ロ的电缆和光纤作为主链路和备份链路分别连接不同对端设备的电口和光ロ。 6. The method of claim I, wherein the end of the photovoltaic device according ro the end of the multiplexing cable and fiber links as primary and backup links connected to the remote device, further comprising: a local device optical multiplexing as the primary link and backup link connecting different electrical and fiber ro peer device respectively the end of the cable and fiber ro.
  7. 7.根据权利要求6所述的方法,其特征在于,选择具有相同工作模式的链路建立本端设备和对端设备的通信,包括: 检测与本端设备的工作模式对应的链路是否可用,如果可用则通过该链路建立本端设备和对端设备的通信,如果不可用,则切换所述工作模式并重新检测。 7. The method according to claim 6, characterized in that, to select a link having the same mode of operation and establishing a local device communication peer apparatus, comprising: detecting a working mode of the local device and the corresponding link is available , if available, and to establish the present communication terminal equipment of the remote device across the link, if not available, the operating mode is switched and retested.
  8. 8. 一种基于光电复用端ロ的链路冗余备份系统,其特征在干,所述系统包含光电复用设备,所述光电复用设备之间采用光电复用端ロ的电缆和光纤作为主链路和备份链路进行连接;所述光电复用设备包括: 工作模式设置単元,设置所述光电复用设备的光电复用端ロ的工作模式,在初始阶段将工作模式设置为在电传输和光传输之间进行来回转换,使相连接的光电复用设备在一共同时段内具有相同的工作模式; 通信链路协商単元,检测相连接的光电复用设备的工作模式,当检测到相同的工作模式时,选择与该相同的工作模式对应的链路建立光电复用设备之间的通信;链路检测切换単元,检测当前链路是否正常通信,如果正常则保持当前链路的连接;如果不正常,则选择另一条链路建立光电复用设备之间的通信。 A photoelectric link redundancy backup system based on the multiplexed side ro, characterized in that the dry, said system comprising a photoelectric multiplexing device, the photoelectric photoelectric multiplexing between a multiplexing device and an optical fiber cable ends ro as the primary link connection and backup link; the photoelectric multiplexing equipment comprising: a working mode radiolabeling element, the photoelectric mode of operation is provided a photoelectric multiplexers multiplexing ro end, the working mode is set at the initial stage of the for electrical transmission and optical transmission between the switching back and forth, the phase photoelectric multiplexing equipment connected with the same mode of operation within a common time period; communication link negotiation radiolabeling element, photoelectric detection operation mode multiplexers connected, when detecting when the same mode of operation, corresponding to the same selected mode of operation to establish a communication link between the photoelectric multiplexers; radiolabeling link detection switch element, detects the current communication link is normal, if the normal connection of the current link is maintained ; if not normal, select another communications link is established between the photoelectric multiplex equipment.
  9. 9.根据权利要求8所述的系统,其特征在于,所述工作模式设置単元包括: 循环模式设置单元,将所述光电复用设备的光电复用端ロ的工作模式设置为在光传输模式和电传输模式之间进行周期性交替。 9. The system of claim 8, wherein said working mode setting radiolabeling element comprising: a cyclic mode setting unit, the photoelectric photoelectric multiplexers multiplexing end ro operation mode is set to the optical transmission mode between the electrical transmission mode and periodically alternate.
  10. 10. 一种基于光电复用端ロ的链路冗余备份系统,其特征在于,所述系统包含光电复用设备;所述光电复用设备将光电复用端ロ的电缆和光纤作为主链路和备份链路分别连接不同对端设备的电口和光ロ;所述光电复用设备包括: 工作模式设置単元,设置所述光电复用设备的光电复用端ロ的工作模式,在初始阶段将工作模式设置为在电传输和光传输之间进行来回转换; 通信链路协商単元,检测与所述工作模式对应的链路是否可用,如果可用则通过该链路建立光电复用设备和对端设备的通信;如果不可用,则更换所述工作模式并重新检测; 链路检测切换単元,检测当前通信链路是否正常,如果正常则保持当前链路的连接;如果不正常,则选择另一条链路建立所述光电复用设备和对端设备之间的通信。 A photoelectric link redundancy backup system based on the multiplexed side ro, characterized in that the system comprises a photoelectric multiplexers; the photoelectric photoelectric multiplexers multiplexing ro end of an optical fiber cable as a main chain and backup link path and are connected to different electrical and fiber ro peer device; the photoelectric multiplex device comprising: a working mode radiolabeling element, the photoelectric mode of operation is provided a photoelectric multiplexers multiplexing ro the end, at the initial stage set the operation mode to be switched back and forth between the electrical transmission and optical transmission; communication link negotiation radiolabeling element, corresponding to the working mode detects whether the link is available if the available link is established by the multiplexing equipment and the peer photo communication device; if not available, to replace the operating mode and retested; radiolabeling link detection switch element, detects the current communication link is normal, if the normal connection of the current link is maintained; if not normal, select another Optical multiplexers and link establishing the communication between the client device pair.
CN 200810119616 2008-09-04 2008-09-04 Method and system for link redundant backup base on photoelectric multiplexing port CN101350636B (en)

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