CN103188716A - Location method and device for failures of reliable user datagram protocol (RUDP) link - Google Patents

Location method and device for failures of reliable user datagram protocol (RUDP) link Download PDF

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CN103188716A
CN103188716A CN 201110452326 CN201110452326A CN103188716A CN 103188716 A CN103188716 A CN 103188716A CN 201110452326 CN201110452326 CN 201110452326 CN 201110452326 A CN201110452326 A CN 201110452326A CN 103188716 A CN103188716 A CN 103188716A
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node
rudp
time
fault
fault location
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CN 201110452326
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Chinese (zh)
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CN103188716B (en )
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何曦
翟万腾
李更深
任广进
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/02Network-specific arrangements or communication protocols supporting networked applications involving the use of web-based technology, e.g. hyper text transfer protocol [HTTP]
    • H04L67/025Network-specific arrangements or communication protocols supporting networked applications involving the use of web-based technology, e.g. hyper text transfer protocol [HTTP] for remote control or remote monitoring of the application
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance or administration or management of packet switching networks
    • H04L41/06Arrangements for maintenance or administration or management of packet switching networks involving management of faults or events or alarms
    • H04L41/0677Arrangements for maintenance or administration or management of packet switching networks involving management of faults or events or alarms localization of fault position
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing packet switching networks
    • H04L43/08Monitoring based on specific metrics
    • H04L43/0805Availability
    • H04L43/0811Connectivity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic regulation in packet switching networks
    • H04L47/10Flow control or congestion control
    • H04L47/22Traffic shaping

Abstract

The invention discloses a location method and device for failures of a reliable user datagram protocol (RUDP) link, The location method includes the following steps: S1, failure location fields are added in a message header of an RUDP message in advance; S2, failure location parameters are filled in the failure location fields of the RUDP message and the message is sent to a next skip node when a source node sends data to a destination node; S3, the source node locates the failure points according to preset strategies when the transmission path fails. The location device for failures of the RUDP link comprises a RUDP message management module and a failure locating module. The location method and device for failures of the RUDP link is capable of reducing out-sending data and relieving network load.

Description

RUDP链路故障定位方法及装置 RUDP link fault location method and device

技术领域 FIELD

[0001] 本发明涉及无线通信领域,尤其涉及一种RUDP (Reliable User DatagramProtocol,可靠用户数据报协议)链路故障定位方法及装置。 [0001] The present invention relates to the field of wireless communications, particularly to a RUDP (Reliable User DatagramProtocol, reliable user datagram protocol) link fault location method and apparatus.

背景技术 Background technique

[0002] RUDP是一种基于RFC908和1151 (第二版)的简单包传输协议。 [0002] RUDP is a simple protocol based packet transmission RFC908 and 1151 (second edition). RUDP提供基于消息的可靠通信功能,通信是面向连接的,底层采用UDP作为承载协议。 RUDP reliable message-based communication function, the communication is connection-oriented, using UDP as underlying bearer protocol. 作为一个可靠传输协议,RUDP用于传输IP网络间的电话信号。 As a reliable transport protocol, RUDP for telephone signal transmission between the IP network. RUDP的一项重要功能就是重发,在发送报文时,会启动一个超时定时器,当超时定时器超时未收到对端的应答,就会重新发送报文,这种机制有效的保证了数据到达对端。 An important feature is the RUDP retransmission, when sending a message, it will start a timeout timer, when the timer expires timeout does not receive a response to the end, it will re-send the message, this mechanism effectively ensures the data arrive at the end. 图1为协议中的RUDP报文格式示意图。 1 is a schematic RUDP protocol packet format. 其中,SYN字段表示当前为同步,ACK字段表示协议头有效的承认序号,EACK字段表示当前为扩展承认,RST字段表示数据包为复位,NUL字段表示数据包为空,CHK字段表示检验和是否包含协议头或协议头与数据的检验和,TCS字段表示数据包是传输连接状态,O字段表示其值必须设置为0,以上字段统称为Control Bits字段,表示数据包当前状态Reader Length字段表示数据包中的用户数据起始位置;Sequence Number字段表示当打开第一个连接,每个对等结构任意选取一个初始序列号,所述序列号用于SYN字段打开连接。 Wherein, SYN field represents the current synchronization, ACK field indicates the effective recognition sequence number protocol header, EACK field indicates an extended acknowledge, RST field indicates the packet is a reset, NUL field indicates that the packet is empty, CHK field indicates checksum contain header or header data checksum, the TCS field indicates that the packet is a transmission connection state, O field indicates the value must be set to 0, the above fields are collectively referred to as the Control Bits field indicates that the packet of the current state of the Reader Length field indicates the packet user data in the start position; sequence number field indicates when the first connection opening, each peer randomly selecting an initial sequence number, the sequence number is used to open the connection SYN field. 在发送数据、空或复位字段之前,每个传送方会相应增加序列号! Before transmitting data, empty or reset segment, each of the transmission side increments the sequence number! Acknowledgement Number字段表示传送方最后传送接收方接收的数据包的序列;Checksum字段表示协议头中总会计算出检验和以确保完整性。 Acknowledgement Number field indicates a sequence of packet data received by a receiver transmitter the last; Checksum field indicates the protocol header and always calculated to ensure integrity.

[0003] RUDP虽然能够在RUDP链路中出现超时重传,但却不能确定是哪个节点出现故障,无法对分析整条通信链路提供有效信息,特别在通信领域的板间通信下,由于物理链路相当稳定,故出现RUDP断链时,多半为软件处理问题,因此需要一种有效的方法来定位故障点。 [0003] Although RUDP can occur in the retransmission timeout RUDP link, but it can not determine which node fails, the analysis can not provide useful information for the entire communication links, inter-board communication in the particular field of communications, due to the physical link quite stable, so that when the chain scission occurs RUDP, mostly dealing in software, thus a need for an effective method to locate a fault point.

发明内容 SUMMARY

[0004] 本发明的目的是,提供一种RUDP链路故障定位方法及装置,以解决RUDP报文传输过程中的传输路径故障定位问题。 Objective [0004] The present invention is to provide a method and a fault location RUDP link means to solve the problem of transmission line fault location RUDP packet during transmission.

[0005] 本发明提供了一种RUDP链路故障定位方法,上述方法为: [0005] The present invention provides a method of fault location RUDP link, the method described above:

[0006] 预先在RUDP报文的报文头中增加故障定位字段; [0006] In the field of pre-fault location increases RUDP message packet header;

[0007] 源节点向目的节点间发送数据时,将故障定位参数填充到RUDP报文的故障定位字段中,发送给传输路径上的下一跳节点; When [0007] between the source node transmits the data to the destination node, the fault location to the fault location parameter field RUDP filled packets, the transmission to the next hop node on the transmission path;

[0008] 当上述传输路径发生故障时,上述源节点根据预设策略确定故障点。 [0008] When the above-described transmission path fails, said source node determines the fault point according to a preset policy.

[0009] 本发明进一步提供了一种RUDP链路故障定位装置,上述装置包括RUDP报文管理模块和故障确定模块, [0009] The present invention further provides a fault location device RUDP link, said apparatus comprising a packet management module and RUDP fault determination module,

[0010] 上述RUDP报文管理模块,用于将故障定位参数填充到RUDP报文的故障定位字段中,发送给传输路径上的下一跳节点; [0010] The RUDP packet management module, fault location parameters for the fault location field RUDP filled packets, the transmission to the next hop node on the transmission path;

[0011] 上述故障确定模块,用于在传输路径发生故障时,根据预设策略确定故障点。 [0011] The fault determination module, configured to, when the transmission path fails, the fault point is determined according to a preset policy. [0012] 本发明通过在RUDP报文的报文头中增加故障定位字段,在发送RUDP报文时,即通过上述故障定位字段携带故障定位参数,使得RUDP报文传输路径一旦发生故障,即可获知故障点;本发明减少了数据的发送量,减轻网络负荷。 [0012] The present invention by increasing the fault location field RUDP packet header, when the packet transmission RUDP, i.e. carrying fault location parameters via the fault location field, such that the packet transmission path RUDP the event of failure, to known point of failure; the present invention reduces the amount of data sent, reduce the network load.

附图说明 BRIEF DESCRIPTION

[0013] 此处所说明的附图用来提供对本发明的进一步理解,构成本发明的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。 [0013] The drawings described herein are provided for further understanding of the present invention, constituting part of the invention, exemplary embodiments of the present invention are used to explain the present invention without unduly limiting the present invention. 在附图中: In the drawings:

[0014] 图1是协议中的RUDP报文的报文头格式的示意图; [0014] FIG. 1 is a schematic diagram RUDP packet header format protocol;

[0015] 图2是本发明RUDP报文的报文头格式的实施例一不意图; [0015] FIG 2 is an embodiment of RUDP packet header format of the present invention is not intended to be a;

[0016] 图3是本发明RUDP报文的报文头格式的实施例二示意图; [0016] FIG. 3 is an embodiment of the present invention RUDP packet header format, two schematic;

[0017] 图4是本发明RUDP链路故障定位方法优选实施例一的流程图; [0017] FIG. 4 is a flowchart of a link fault location method RUDP preferred embodiment of the present invention;

[0018] 图5是本发明RUDP链路故障定位方法优选实施例二的流程图; [0018] FIG. 5 is a flowchart of the RUDP two link fault location method according to the present preferred embodiment of the invention;

[0019] 图6是本发明RUDP链路故障定位装置优选实施例的原理框图。 [0019] FIG. 6 is a block diagram of an embodiment of a link fault locating device RUDP preferably present invention.

具体实施方式 detailed description

[0020] 为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚、明白,以下结合附图和实施例,对本发明进行进一步详细说明。 [0020] In order to make the technical problem to be solved by the present invention, technical solutions and beneficial effects more clearly understand, in conjunction with the accompanying drawings and the following embodiments, the present invention will be further described in detail. 应当理解,此处所描述的具体实施例仅用以解释本发明,并不用于限定本发明。 It should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0021] 如图2所示,是本发明RUDP报文的报文头格式的实施例一示意图;本实施例在RUDP报文的报文头的Checksum字段前增加了故障定位字段,其大小可根据具体应用选择,比如4个字节或2个字节;故障定位字段用以携带故障定位参数,例如源节点发送RUDP报文的时间或者节点的地址;另外,故障定位参数为时间时,则故障定位字段可命名为Time字段,故障定位参数为地址时,则故障定位字段可命名为Location字段。 [0021] As shown in FIG 2, it is a schematic view of an embodiment of the present invention RUDP packet header format; prior to the present embodiment RUDP Checksum field in the packet header field increases the fault location, its size may depending on the application selected, for example, four bytes or 2 bytes; fault location field to carry the fault location parameters, such as the source node transmits packets RUDP or address of a node; in addition, fault location parameter is time, fault Location field can be named time field, fault location address parameter, the fault location can be named field Location field.

[0022] 如图3所示,是本发明RUDP报文的报文头格式的实施例二示意图;本实施例在RUDP报文的报文头的Checksum字段后增加了故障定位字段,其大小可根据具体应用选择,比如4个字节或2个字节;故障定位字段用以携带故障定位参数,例如源节点发送RUDP报文的时间或者节点的地址;另外,故障定位参数为时间时,则故障定位字段可命名为Time字段,故障定位参数为地址时,则故障定位字段可命名为Location字段。 [0022] As shown in FIG 3, it is a schematic view of the second embodiment of the present invention RUDP packet header format; the present embodiment, after RUDP Checksum field in the packet header field increases the fault location, its size may depending on the application selected, for example, four bytes or 2 bytes; fault location field to carry the fault location parameters, such as the source node transmits packets RUDP or address of a node; in addition, fault location parameter is time, fault Location field can be named time field, fault location address parameter, the fault location can be named field Location field.

[0023] 如图4所示,是本发明RUDP链路故障定位方法优选实施例一的流程图,本实施例基于图2或图3所示的RUDP报文,设源节点为A、目标节点为E,传输路径为ABCDE,并设B节点和D节点为预设的关键节点,以时间作为故障定位参数,具体包括以下步骤: [0023] As shown in FIG 4 is a flowchart of the RUDP a link fault location method according to the present invention, a preferred embodiment, the present embodiment is based on FIG. 2 or FIG. 3 RUDP message shown, provided the source node A, the target node is E, ABCDE transmission path, and provided for the node B and node D key nodes preset time as the fault location parameters includes the following steps:

[0024] 步骤SOl:源节点A需要向目的节点E发送数据; [0024] Step SOl: A source node needs to send data to the destination node E;

[0025] 步骤S02:将本地时间填充到RUDP报文的故障定位字段中,发送给传输路径上的下一跳节点B ; [0025] Step S02: The local time to fault location field RUDP filled packets, the transmission to the next hop node on the transmission path B;

[0026] 步骤S03:节点B为关键节点,故获取收到的RUDP报文的故障定位字段中的时间,并用本地时间减去获取的时间,计算出时间差后缓存,同时将上述RUDP报文转发给下一跳节点C ; [0026] Step S03: node B key nodes, so the acquisition time fault location field received RUDP packets in, and subtracting obtain local time of time, calculate the time difference of the cache, while the above-described RUDP forwards packets C to the next hop node;

[0027] 步骤S04:节点C为普通节点,则将收到的RUDP报文转发给传输路径上的下一跳报文D ;[0028] 步骤S05:节点D为关键节点,故获取收到的RUDP报文的故障定位字段中的时间,并用本地时间减去获取的时间,计算出时间差后缓存,同时将上述RUDP报文转发给下一跳节点E ; [0027] Step S04: Common node C to the node, then RUDP received packet forwarding packets to the next hop on the transmission path D; [0028] Step S05: The key nodes to node D, it acquires received RUDP time fault location field in the packet, and the local time minus the time taken to calculate the time difference after the cache, while the above-described RUDP forwards packets to the next hop node E;

[0029] 步骤S06:源节点A超时未收到目标节点E返回的应答消息,则判断出传输路径故障; [0029] Step S06: A timeout source node does not receive a response message returned from the destination node E, it is judged that the transmission path failure;

[0030] 步骤S07:获取传输路径上的关键节点B的时间差Lb和关键节点D上的时间差Ld ; [0030] Step S07: acquisition time of the time critical nodes on the transmission path B the difference between the difference D Lb and Ld node key;

[0031] 步骤S08:找出其中数值最大的时间差; [0031] Step S08: find out the maximum value of the time difference;

[0032] 步骤S09:确定故障点,即上述数值最大的时间差对应的节点为故障点。 [0032] Step S09: determining the point of failure, i.e., the maximum value of the above-described time difference corresponding to the fault point node.

[0033] 本实施例中,若节点B发生故障,则RUDP报文发送到B后,就不能继续被转发,此时,节点D上的时间差为空,定时器超时后,源节点A即可得知传输路径故障,并确定故障点。 [0033] embodiment, if the Node B fails, then the packet is sent to RUDP B, can not continue to be forwarded to the present embodiment, at this time, the time difference after the node D is empty, the timer expires, the source node A to that the transmission path failure, and determine the point of failure. 下面的实施例(即实施例二)中,传输路径一旦发生故障,源节点即可在最快时间内得知并确定故障点,不需要等待定时器超时。 The following examples (i.e., Example II), the transmission path event of failure, and determining that the source node to the fault point in the shortest time, without waiting timer expires.

[0034] 如图5所示,是本发明RUDP链路故障定位方法优选实施例二的流程图,本实施例基于图2或图3所示的RUDP报文,设源节点为A、目标节点为E,传输路径为ABCDE,以地址作为故障定位参数,具体包括以下步骤: [0034] As shown in FIG 5 is a flowchart of the RUDP two link fault location method of the present invention, a preferred embodiment, the present embodiment is based on FIG. 2 or FIG. 3 RUDP message shown, provided the source node A, the target node is E, the transmission path ABCDE, fault location with the address as parameters, comprises the steps of:

[0035] 步骤Sll:源节点A需要向目的节点E发送数据,将本地地址填充到RUDP报文的故障定位字段中,发送给传输路径上的下一跳节点B ; [0035] Step Sll: A source node needs to send data to the destination node E, the fault location to refill the local address field RUDP packets, the transmission to the next hop node on the transmission path B;

[0036] 步骤S12:判断是否在预设时间内收到节点B的应答消息,若是,则本节点发送成功;否则,传输路径故障,且故障点为节点B,结束; [0036] Step S12: determines whether or not the response message is a Node B within the preset time, if yes, transmitting node successfully; otherwise, the transmission path failure, the node B and a point of failure, end;

[0037] 即若源节点A在预设时间内未收到节点B的应答消息,则节点B处故障; [0037] That is, if the source node does not receive a response message A Node B within the preset time, the node B of the failure;

[0038] 步骤S13:节点B用本地地址替换收到的RUDP报文的故障定位字段中的地址,并将上述RUDP报文转发给下一跳节点C ; [0038] Step S13: The Node B replacement address field of the received fault location RUDP packet with the local address and RUDP forwards the packet to the next hop node C above;

[0039] 步骤S14:判断是否在预设时间内收到节点C的应答消息,若是,则本节点发送成功;否则,返回发送失败消息给源节点A ; [0039] Step S14: determines whether or not a response message to the node C within a preset time, if yes, this node sends successful; otherwise, return a failure message sent to the source node A;

[0040] 步骤S15:节点C用本地地址替换收到的RUDP报文的故障定位字段中的地址,并将上述RUDP报文转发给下一跳节点D ; [0040] Step S15: fault location node C replacement address field of the received packet in RUDP using a local address and RUDP forwards the packet to the next hop node D above;

[0041] 步骤S16:判断是否在预设时间内收到节点D的应答消息,若是,则本节点发送成功;否则,返回发送失败消息给源节点A ; [0041] Step S16: determines whether or not a response message to node D within a preset time, if yes, this node sends successful; otherwise, return a failure message sent to the source node A;

[0042] 步骤S17:节点D用本地地址替换收到的RUDP报文的故障定位字段中的地址,并将上述RUDP报文转发给下一跳节点E ; [0042] Step S17: fault location node D replacement address field of the received packet in RUDP using a local address and RUDP forwards the packet to the next hop node E above;

[0043] 步骤S18:判断是否在预设时间内收到节点E的应答消息,若是,则本节点发送成功;否则,返回发送失败消息给源节点A ; [0043] Step S18: determines whether or not the node E reply message within a preset time, if yes, this node sends successful; otherwise, return a failure message sent to the source node A;

[0044] 步骤S19:源节点A收到发送失败消息后,获知传输路径故障,并确定故障点为返回上述发送失败消息节点的下一跳节点。 [0044] Step S19: A source node after receiving the failure message transmission, a transmission path failure is known, and to determine the point of failure of a next hop node for the message returns to the transmitting node.

[0045] 若节点B在预设时间内未收到节点C的应答消息,则返回发送失败消息给源节点A,源节点A立刻判断出传输路径故障且故障点为节点C ; [0045] If the Node B does not receive a response message of node C within a preset time, sending a failure message is returned to the source node A, the source node A immediately determine the transmission path fails and the node C to the fault point;

[0046] 若节点C在预设时间内未收到节点D的应答消息,则返回发送失败消息给源节点A,源节点A立刻判断出传输路径故障且故障点为节点D ; [0046] If node D to node C response message is not received within a preset time, sending a failure message to the source node A, the source node A immediately determine the transmission path fails and node D returns to the fault point;

[0047] 若节点D在预设时间内未收到节点E的应答消息,则返回发送失败消息给源节点A,源节点A立刻判断出传输路径故障且故障点为节点E。 [0047] If node D, node E reply message is not received within a preset time, sending a failure message is returned to the source node A, the source node A immediately determine the transmission path and the fault point is node failure E.

[0048] 本发明可及时确认传输路径发生故障,减少了RUDP报文的重传次数,减轻了网络负担。 [0048] The present invention can promptly confirm the transmission path fails, to reduce the number of retransmission packets RUDP, reducing network burden.

[0049] 如图6所示,是本发明RUDP链路故障定位装置优选实施例的原理框图,本实施例包括RUDP报文管理模块和故障确定模块,其中, [0049] As shown in FIG. 6 is a schematic block diagram of an embodiment of a link fault locating device RUDP the present invention preferably, the present embodiment includes a packet management module and RUDP fault determination module, wherein,

[0050] RUDP报文管理模块,用于将故障定位参数填充到RUDP报文的故障定位字段中,发送给传输路径上的下一跳节点;以及在传输路径上的中间节点中配置关键节点,获取收到的RUDP报文的故障定位字段中的时间,并用本地时间减去上述获取到的时间,计算出时间差并缓存;或者在收到RUDP报文时,返回应答消息给上一跳节点,同时将收到的RUDP报文中的故障定位字段的地址替换为本地地址,转发给下一跳节点,并判断是否在预设时间内收到上述下一跳节点的应答消息,并在预设时间内未收到上述下一跳节点的应答消息时,返回发送失败消息给源节点; [0050] RUDP packet management module, fault location parameters for the fault location field RUDP filled packets, the transmission to the next hop node on the transmission path; and an intermediate node on the transmission path of the node key configuration, fault location acquisition time field RUDP packet received in, and subtracting the time acquired local time, calculate the time difference and the cache; RUDP or when receiving the packet, returns a response message to the previous hop node, while the fault location address field RUDP received packet is replaced with a local address, forwarded to the next hop node, and determines whether or not the above-described response message next hop node within a preset time, and a preset when the response message is not received next hop node time, it sends back a failure message to the source node;

[0051] 故障确定模块,用于在传输路径发生故障时,获取传输路径中的关键节点上的时间差,找出其中数值最大的时间差,根据上述数值最大的时间差确定故障点;或者根据返回发送失败消息的节点确定故障点。 [0051] The fault determination module, configured to, when the transmission path fails, the acquisition time in the transmission path of the key nodes difference, to find the largest value of the time difference, determines the fault point based on the largest value of the time difference; or according sends back failure node messages to determine the point of failure.

[0052] 上述说明示出并描述了本发明的优选实施例,但如前所述,应当理解本发明并非局限于本文所披露的形式,不应看作是对其他实施例的排除,而可用于各种其他组合、修改和环境,并能够在本文所述发明构想范围内,通过上述教导或相关领域的技术或知识进行改动。 [0052] The above description of the embodiments illustrated and described preferred embodiments of the present invention, as previously discussed, it should be understood that the invention is not limited to the form disclosed herein should not be considered as excluding other embodiments, the available in various other combinations, modifications, and environments, and can be within the scope of the invention contemplated herein, or make changes to the above teachings in skill or knowledge of the relevant art. 而本领域人员所进行的改动和变化不脱离本发明的精神和范围,则都应在本发明所附权利要求的保护范围内。 The modifications and variations carried out by the skilled person without departing from the spirit and scope of the invention shall fall within the scope of the appended claims of the invention.

Claims (10)

  1. 1.一种可靠用户数据报协议RUDP链路故障定位方法,其特征在于,所述方法为: 预先在RUDP报文的报文头中增加故障定位字段; 源节点向目的节点间发送数据时,将故障定位参数填充到RUDP报文的故障定位字段中,发送给传输路径上的下一跳节点; 当所述传输路径发生故障时,所述源节点根据预设策略确定故障点。 A reliable user datagram protocol RUDP link fault location method, wherein said method is: in advance to increase the fault location field RUDP packet header packet; between the source node sends data to the destination node, the the fault location fault location parameter field RUDP filled packets, the transmission to the next hop node on the transmission path; when the transmission path fails, the source node determines the fault point according to a preset policy.
  2. 2.根据权利要求1所述的方法,其特征在于, 所述故障定位字段位于所述报文头中的Checksum字段之前或之后。 2. The method according to claim 1, characterized in that, prior to the fault location field is located in the packet header or after the Checksum field.
  3. 3.根据权利要求1所述的方法,其特征在于,所述故障定位参数为时间或地址。 3. The method according to claim 1, wherein said fault location or address of a time parameter.
  4. 4.根据权利要求3所述的方法,其特征在于,当所述故障定位参数为时间时,所述方法还包括以下步骤: 预先在所述传输路径上的中间节点中配置关键节点; 所述关键节点收到RUDP报文时,获取故障定位字段中的时间,并用本地时间减去所述获取到的时间,计算出时间差并缓存。 4. The method according to claim 3, wherein, when the fault location parameter is time, said method further comprising the steps of: pre-intermediate node in the transmission path of the node key configuration; the when a node receives a key RUDP packet acquisition time fault location field, and subtracting the time acquired local time, calculate the time difference and the cache.
  5. 5.根据权利要求3所述的方法,其特征在于,当所述故障定位参数为地址时,所述方法还包括以下步骤: 所述传输路径上的中间节点收到RUDP报文后,返回应答消息给上一跳节点; 将收到的RUDP报文中的故障定位字段的地址替换为本地地址,并转发给下一跳节点;判断是否在预设时间内收到所述下一跳节点的应答消息,若是,则发送成功,否则,返回发送失败消息给所述源节点。 5. The method according to claim 3, wherein, when the parameter for the fault location address, said method further comprising the step of: said intermediate node on the transmission path after receiving RUDP packet, returns a response message to the previous hop node; RUDP address packets received fault location field is replaced with the local address, and forwarded to the next hop node; determines whether or not the next hop node within a preset time response message, if yes, sending successful, otherwise, return a failure message sent to the source node.
  6. 6.根据权利要求4或5所述的方法,其特征在于,所述方法中, 当所述故障定位参数为时间时,所述源节点在超时未收到目标节点的应答消息时,确定传输路径发生故障; 当所述故障定位参数为地址时,所述源节点在收到发送失败消息或超时未收到目标节点的应答消息时,确定传输路径发生故障。 The method according to claim 4 or 5, characterized in that, the method, when the parameters for the fault location time, the source node when the target node timeout response message is not received, determining a transmission path fails; parameter when the fault location as an address, the source node upon receipt or time out message transmission failure response message is not received the target node, determining a transmission path fails.
  7. 7.根据权利要求6所述的方法,其特征在于,当所述故障定位参数为时间时,所述源节点根据预设策略确定故障点步骤具体为: 获取传输路径中的关键节点上的时间差; 找出其中数值最大的时间差; 所述数值最大的时间差对应的节点为故障点。 7. The method according to claim 6, wherein, when the fault location parameter is time, the source node determines the fault point according to a preset policy step is specifically: obtaining the time critical nodes in a transmission path difference ; find the largest value of the time difference; the maximum value of the time difference corresponding to the fault point node.
  8. 8.根据权利要求6所述的方法,其特征在于,当所述故障定位参数为地址时,所述源节点根据预设策略确定故障点步骤具体为: 在所述预设时间内未收到下一跳节点的应答消息时,故障点为所述下一跳节点;否则,故障点为返回发送失败消息的节点的下一跳节点。 8. The method according to claim 6, wherein, when the parameter for the fault location address, the source node determines the step of the fault point according to a preset policy specifically is: not received within the preset time when the next hop node a response message, the next hop point of failure nodes; otherwise, sending a fault point of a next hop node failure message is returned.
  9. 9.一种RUDP链路故障定位装置,其特征在于,所述装置包括RUDP报文管理模块和故障确定模块, 所述RUDP报文管理模块,用于将故障定位参数填充到RUDP报文的故障定位字段中,发送给传输路径上的下一跳节点; 所述故障确定模块,用于在传输路径发生故障时,根据预设策略确定故障点。 A RUDP link fault location device, characterized in that said means comprises a message RUDP fault determination module and a management module, the RUDP packet management module, fault location for filling parameters to the fault message RUDP Location field, sent to the next hop node on the transmission path; said fault determination module, configured to, when the transmission path fails, the fault point is determined according to a preset policy.
  10. 10.根据权利要求9所述的装置,其特征在于,所述RUDP报文管理模块,用于在传输路径上的中间节点中配置关键节点,以及获取收到的RUDP报文的故障定位字段中的时间,并用本地时间减去所述获取到的时间,计算出时间差并缓存;或者在收到RUDP报文时,返回应答消息给上一跳节点,同时将收到的RUDP报文中的故障定位字段的地址替换为本地地址,转发给下一跳节点,并判断是否在预设时间内收到所述下一跳节点的应答消息,并在预设时间内未收到所述下一跳节点的应答消息时,返回发送失败消息给源节点; 所述故障确定模块,用于获取传输路径中的关键节点上的时间差,找出其中数值最大的时间差,根据所述数值最大的时间差确定故障点;或者根据返回发送失败消息的节点确定故障点。 10. The apparatus according to claim 9, characterized in that said packet management module RUDP, an intermediate node on the transmission path for the node key configuration, fault location field, and acquiring the received packet in RUDP time, and subtracting the local time with the acquired time, calculate the time difference and the cache; RUDP or when receiving the packet, returns a response message to the previous hop node while packets RUDP the received fault positioning the replacement address field of the local address, forwarded to the next hop node, and determines whether or not a response message to the next hop node within a preset time, and the next-hop is not received within a preset time when node a response message, sends back a failure message to the source node; the fault determination module, configured to obtain the time critical nodes in a transmission path difference, to find the largest value of the time difference, the time difference between the maximum value determined according to the fault point; or determining the point of failure according to the node returns a failure message is sent.
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