WO2015120720A1 - Signal degradation failure processing method and system - Google Patents
Signal degradation failure processing method and system Download PDFInfo
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- WO2015120720A1 WO2015120720A1 PCT/CN2014/086546 CN2014086546W WO2015120720A1 WO 2015120720 A1 WO2015120720 A1 WO 2015120720A1 CN 2014086546 W CN2014086546 W CN 2014086546W WO 2015120720 A1 WO2015120720 A1 WO 2015120720A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/14—Monitoring arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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- the alarm function of the Alarm Indication Signal is mainly applied to the transmission of a Packet Transport Network (PTN) and an Optical Transport Network (OTN).
- PDN Packet Transport Network
- OTN Optical Transport Network
- LSP Switch Path LSP for short
- LSP client layer label switching channel
- LOS Loss Of Signal
- the SD performance detection mode on the end-to-end path can be used to detect whether there is an SD fault in the path.
- loss measurement Loss Measurement, LM for short
- performance detection and operation such as Delay Measurement (DM)
- DM Delay Measurement
- MPLS-TP multi-protocol label switching transmission application
- AIS alarm packets are required to be inserted into each client layer LSP on the link layer, and a large number of AIS alarms are generated. The message, which increases the AIS processing overhead and bandwidth resource transmission overhead of the device.
- IP RAN For the IP/MPLS network equipment of the current radio access network IP (IP RAN), the detection of the link fault is mainly to detect the SF fault through the end-to-end bidirectional forwarding detection (BFD) mechanism, or At the IP layer, IP performance measurement (Performance Measurement, PM for short) is used to detect SD performance.
- BFD bidirectional forwarding detection
- PM Performance Measurement
- the present invention provides a method and system for processing signal degradation faults to at least solve the problem of lack of SD fault detection and notification mode on the IP/MPLS network end-to-end LSP in the related art.
- a method of processing a signal degradation fault is provided.
- a method for processing a signal degradation fault includes: the first node determines a link presence signal degradation (SD) fault between the first node and the second node, wherein the first node and the second node are And generating, by the first node, one or more first SD fault alarm information messages, according to the status information of the SD fault occurring on the link, where Each first SD fault alarm information message carries identification information of one or more LSPs where the end node corresponding to the first SD fault alarm information packet is located; the first node will each first SD fault alarm The information message is sent to the corresponding end node, where each first SD fault alarm information message is used by the corresponding end node according to the identification information of one or more LSPs carried in the first SD fault alarm information message. Determine that an SD fault occurs on the link, and/or trigger one or more LSPs where the end node is located to perform the switching operation of the active and standby paths.
- SD link presence signal degradation
- the first node determines that the link has an SD fault, including one of the following: the first node detects that there is an SD fault on the link; the first node receives the second node by adding an SD on the link by adding in a preset protocol. Announcement that occurs after the status information of the fault.
- the first node Preferably, the first node generates one or more first SD fault alarm information messages, including: after detecting the SD fault, the first node will have the same manner through an Internet Protocol (IP) and a User Datagram Protocol (UDP) encapsulation manner.
- IP Internet Protocol
- UDP User Datagram Protocol
- the identifier of one or more LSPs of the destination end node is encapsulated into an IP packet or a UDP packet to generate one or more first SD fault alarm information packets.
- the first node uses an IP packet or a UDP packet.
- the UDP port number identifies one or more types of the first SD fault alarm information packet as the type of the SD alarm information.
- the method further includes: the corresponding end node determines, by using the UDP port number, that the received packet type is the first SD fault.
- the alarm information packet is sent by the corresponding end node to trigger one or more LSPs in which the end node is located to perform the switching operation of the active/standby path according to the identifier information of one or more LSPs carried in the first SD fault alarm information packet. .
- the method further includes: the corresponding end node receives the second SD fault corresponding to the end node from the second node.
- the alarm information packet is determined by the corresponding end node according to the first SD fault alarm information message fed back by the first node and the second SD fault alarm information message fed back by the second node.
- a processing system for signal degradation failure is provided.
- a processing system for signal degradation failure includes: a first node; the first node includes: a first determining module, configured to determine that an SD fault exists in a link between the first node and the second node, where The first node and the second node are adjacent two-node nodes of the common link through which the plurality of LSPs pass; and the generating module is configured to generate one or more first SD fault alarms according to the status information of the SD fault occurring on the link.
- the first SD fault alarm information packet carries identifier information of one or more LSPs where the end node corresponding to the first SD fault alarm information packet is located, and the sending module is set to be each An SD fault alarm information message is sent to the corresponding end node, where each first SD fault alarm information message is used by the corresponding end node according to one or more pieces carried in the first SD fault alarm information message.
- the LSP identification information determines that an SD fault occurs on the link, and/or triggers one or more LSPs in which the end node is located to perform the switching operation of the active/standby path.
- the generating module includes: an encapsulating unit, configured to uniformly encapsulate the identification information of one or more LSPs having the same destination end node into an IP packet or a UDP packet by using an IP and UDP encapsulation manner after detecting the SD fault. And generating one or more first SD fault alarm information messages; the identifier unit is configured to use the UDP port number in the IP packet or the UDP packet to identify one or more types of the first SD fault alarm information message as SD Type of alarm information.
- FIG. 1 is a flow chart of a method of processing a signal degradation fault according to an embodiment of the present invention
- FIG. 4 is a schematic diagram showing the structure of an END TLV message according to a preferred embodiment of the present invention.
- FIG. 5 is a flow diagram of SD fault notification and location in accordance with a preferred embodiment of the present invention.
- FIG. 6 is a schematic diagram of an IP RAN transmission path in accordance with a preferred embodiment of the present invention.
- FIG. 10 is a block diagram showing the structure of an SD fault notification and positioning system in accordance with a preferred embodiment of the present invention.
- the first node generating one or more first SD fault alarm information messages may include the following operations:
- the node that actively detects or is notified of the SD fault can send the SD alarm packet to the upper LSP node transmitted on the end link by using the IP and UDP encapsulation mode after generating the SD alarm packet.
- the LSP upper node can determine the SD fault alarm packet by using the UDP port number, and then determine the current LSP ID or the tunnel ID information encapsulated in the packet.
- the LSP or the tunnel is faulty on the LSP or the tunnel.
- the LSP or tunnel is triggered to perform the active/standby switchover.
- Step S504 The link node determines whether the link has an SD fault; if yes, proceeds to step S506; if not, returns to step S502 to continue SD fault detection;
- the following takes the IP RAN transmission path as an example to further describe the implementation process of the SD alarm notification.
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Abstract
Disclosed are a signal degradation failure processing method and system. The method comprises: determining, by a first node, that an SD failure exists in a link between the first node and a second node; generating, by the first node, one or a plurality of first SD failure alarm information packets according to the state information about the SD failure occurring on the link; and sending, by the first node, each first SD failure alarm information packet to a corresponding end node respectively, wherein each first SD failure alarm information packet is used for determining the SD failure occurring on the link by the corresponding end node according to identification information about one or a plurality of LSPs carried in the first SD failure alarm information packets and/or triggering one or a plurality of LSPs where the end node is located to execute an operation of switching between a main path and a standby path. According to the technical solution provided in the present invention, the overhead of AIS alarm transmission and processing can be saved, and additional LSPs can be prevented from being re-established on the link.
Description
本发明涉及通信领域,具体而言,涉及一种信号劣化故障的处理方法及系统。The present invention relates to the field of communications, and in particular to a method and system for processing signal degradation faults.
目前,相关技术中对于告警指示信号(Alarm Indication Signal,简称为AIS)告警功能主要应用于分组传送网(Packet Transport Network,简称为PTN)、光传送网(Optical Transport Network,简称为OTN)等传送网络设备上。通过链路层两端节点检测到链路层出现故障(可以包括:信号劣化(Signal Degrade,简称为SD)、信号失效(Signal Failure,简称为SF))时,则由故障链路层的两端节点将在其上的客户层标记交换通道(Label Switch Path,简称为LSP)或者复用段通道上下插AIS告警信息,通告给客户层LSP或者复用段通道上两端节点,以便抑制客户LSP上两端节点向网管上报连接丢失(Loss Of Connection,简称为LOC)或信号丢失(Loss Of Signal,简称为LOS)告警。另外,也可以通过端到端路径上SD性能检测方式来检测该路径是否存在SD故障,但此种技术方案的缺陷在于:需要在每个LSP上都进行丢失测量(Loss Measurement,简称为LM)或延迟测量(Delay Measurement,简称为DM)等性能检测和操作,其实现过程较为复杂。此外,现有的多协议标签交换传送应用(MPLS-TP)AIS告警方案中,需要在其链路层上的每个客户层LSP上均下插AIS告警报文,继而会产生大量的AIS告警报文,由此增加了设备的AIS处理开销和带宽资源传送开销。At present, the alarm function of the Alarm Indication Signal (AIS) is mainly applied to the transmission of a Packet Transport Network (PTN) and an Optical Transport Network (OTN). On a network device. When the link layer faults are detected by the nodes at both ends of the link layer (which may include: Signal Degradation (SD), Signal Failure (SF)), then two of the faulty link layers are The end node inserts AIS alarm information on the client layer label switching channel (LSP Switch Path, LSP for short) or multiplex section channel, and advertises it to the client layer LSP or both ends of the multiplex section channel to suppress the client. The two ends of the LSP report the Lost Of Connection (LOC) or Loss Of Signal (LOS) alarm to the NMS. In addition, the SD performance detection mode on the end-to-end path can be used to detect whether there is an SD fault in the path. However, the drawback of this technical solution is that loss measurement (Loss Measurement, LM for short) is required on each LSP. Or performance detection and operation such as Delay Measurement (DM), the implementation process is more complicated. In addition, in the existing multi-protocol label switching transmission application (MPLS-TP) AIS alarm scheme, AIS alarm packets are required to be inserted into each client layer LSP on the link layer, and a large number of AIS alarms are generated. The message, which increases the AIS processing overhead and bandwidth resource transmission overhead of the device.
而对于当前无线接入网IP化(IP RAN)的IP/MPLS网络设备而言,其链路故障的检测主要是通过端到端的双向转发检测(BFD)机制对SF故障进行检测,或者,在IP层上,采取IP性能测量(Performance Measurement,简称为PM)对SD性能加以检测。而对于IP/MPLS LSP或隧道而言,还缺乏端到端SD故障检测和通告机制。For the IP/MPLS network equipment of the current radio access network IP (IP RAN), the detection of the link fault is mainly to detect the SF fault through the end-to-end bidirectional forwarding detection (BFD) mechanism, or At the IP layer, IP performance measurement (Performance Measurement, PM for short) is used to detect SD performance. For IP/MPLS LSPs or tunnels, there is also a lack of end-to-end SD fault detection and notification mechanisms.
发明内容Summary of the invention
本发明提供了一种信号劣化故障的处理方法及系统,以至少解决相关技术中在IP/MPLS网络端到端LSP上缺乏SD故障检测和通告方式的问题。The present invention provides a method and system for processing signal degradation faults to at least solve the problem of lack of SD fault detection and notification mode on the IP/MPLS network end-to-end LSP in the related art.
根据本发明的一个方面,提供了一种信号劣化故障的处理方法。
According to an aspect of the invention, a method of processing a signal degradation fault is provided.
根据本发明实施例的信号劣化故障的处理方法包括:第一节点确定在该第一节点与第二节点之间的链路存在信号劣化(SD)故障,其中,第一节点与第二节点为多条标记交换通道(LSP)经过的公共链路的相邻两端节点;第一节点根据在链路上发生SD故障的状态信息生成一个或多个第一SD故障告警信息报文,其中,每个第一SD故障告警信息报文中分别携带有与该第一SD故障告警信息报文对应的端节点所在的一条或多条LSP的标识信息;第一节点将每个第一SD故障告警信息报文分别发送至对应的端节点,其中,每个第一SD故障告警信息报文用于对应的端节点按照该第一SD故障告警信息报文中携带的一条或多条LSP的标识信息确定在链路上发生SD故障,和/或,触发该端节点所在的一条或多条LSP执行主备路径的切换操作。A method for processing a signal degradation fault according to an embodiment of the present invention includes: the first node determines a link presence signal degradation (SD) fault between the first node and the second node, wherein the first node and the second node are And generating, by the first node, one or more first SD fault alarm information messages, according to the status information of the SD fault occurring on the link, where Each first SD fault alarm information message carries identification information of one or more LSPs where the end node corresponding to the first SD fault alarm information packet is located; the first node will each first SD fault alarm The information message is sent to the corresponding end node, where each first SD fault alarm information message is used by the corresponding end node according to the identification information of one or more LSPs carried in the first SD fault alarm information message. Determine that an SD fault occurs on the link, and/or trigger one or more LSPs where the end node is located to perform the switching operation of the active and standby paths.
优选地,第一节点确定链路存在SD故障包括以下之一:第一节点检测到链路上存在SD故障;第一节点接收到第二节点通过在预设协议中添加在链路上存在SD故障的状态信息后发生的通告。Preferably, the first node determines that the link has an SD fault, including one of the following: the first node detects that there is an SD fault on the link; the first node receives the second node by adding an SD on the link by adding in a preset protocol. Announcement that occurs after the status information of the fault.
优选地,第一节点生成一个或多个第一SD故障告警信息报文包括:第一节点在检测到SD故障后,通过互联网协议(IP)和用户数据包协议(UDP)封装方式将具有相同目的端节点的一条或多条LSP的标识信息统一封装至IP报文或UDP报文,生成一个或多个第一SD故障告警信息报文;第一节点采用IP报文或UDP报文中的UDP端口号标识一个或多个第一SD故障告警信息报文的类型为SD告警信息类型。Preferably, the first node generates one or more first SD fault alarm information messages, including: after detecting the SD fault, the first node will have the same manner through an Internet Protocol (IP) and a User Datagram Protocol (UDP) encapsulation manner. The identifier of one or more LSPs of the destination end node is encapsulated into an IP packet or a UDP packet to generate one or more first SD fault alarm information packets. The first node uses an IP packet or a UDP packet. The UDP port number identifies one or more types of the first SD fault alarm information packet as the type of the SD alarm information.
优选地,在第一节点将每个第一SD故障告警信息报文分别发送至对应的端节点之后,还包括:对应的端节点通过UDP端口号确定接收到的报文类型为第一SD故障告警信息报文;对应的端节点根据接收到的第一SD故障告警信息报文中携带的一条或多条LSP的标识信息触发该端节点所在的一条或多条LSP执行主备路径的切换操作。Preferably, after the first node sends each first SD fault alarm information message to the corresponding end node, the method further includes: the corresponding end node determines, by using the UDP port number, that the received packet type is the first SD fault. The alarm information packet is sent by the corresponding end node to trigger one or more LSPs in which the end node is located to perform the switching operation of the active/standby path according to the identifier information of one or more LSPs carried in the first SD fault alarm information packet. .
优选地,在第一节点将每个第一SD故障告警信息报文发送至对应的端节点之后,还包括:对应的端节点接收来自于第二节点的与该端节点对应的第二SD故障告警信息报文;对应的端节点根据第一节点反馈的第一SD故障告警信息报文和第二节点反馈的第二SD故障告警信息报文确定在链路上发生SD故障。Preferably, after the first node sends each first SD fault alarm information message to the corresponding end node, the method further includes: the corresponding end node receives the second SD fault corresponding to the end node from the second node. The alarm information packet is determined by the corresponding end node according to the first SD fault alarm information message fed back by the first node and the second SD fault alarm information message fed back by the second node.
根据本发明的另一方面,提供了一种信号劣化故障的处理系统。According to another aspect of the present invention, a processing system for signal degradation failure is provided.
根据本发明实施例的信号劣化故障的处理系统包括:第一节点;第一节点包括:第一确定模块,设置为确定在该第一节点与第二节点之间的链路存在SD故障,其中,第一节点与第二节点为多条LSP经过的公共链路的相邻两端节点;生成模块,设置为根据在链路上发生SD故障的状态信息生成一个或多个第一SD故障告警信息报文,其
中,每个第一SD故障告警信息报文中分别携带有与该第一SD故障告警信息报文对应的端节点所在的一条或多条LSP的标识信息;发送模块,设置为将每个第一SD故障告警信息报文分别发送至对应的端节点,其中,每个第一SD故障告警信息报文用于对应的端节点按照该第一SD故障告警信息报文中携带的一条或多条LSP的标识信息确定在链路上发生SD故障,和/或,触发该端节点所在的一条或多条LSP执行主备路径的切换操作。A processing system for signal degradation failure according to an embodiment of the present invention includes: a first node; the first node includes: a first determining module, configured to determine that an SD fault exists in a link between the first node and the second node, where The first node and the second node are adjacent two-node nodes of the common link through which the plurality of LSPs pass; and the generating module is configured to generate one or more first SD fault alarms according to the status information of the SD fault occurring on the link. Information message
The first SD fault alarm information packet carries identifier information of one or more LSPs where the end node corresponding to the first SD fault alarm information packet is located, and the sending module is set to be each An SD fault alarm information message is sent to the corresponding end node, where each first SD fault alarm information message is used by the corresponding end node according to one or more pieces carried in the first SD fault alarm information message. The LSP identification information determines that an SD fault occurs on the link, and/or triggers one or more LSPs in which the end node is located to perform the switching operation of the active/standby path.
优选地,第一确定模块包括:检测单元,设置为检测链路上存在SD故障;接收单元,设置为接收到第二节点通过在预设协议中添加在链路上存在SD故障的状态信息后发生的通告。Preferably, the first determining module includes: a detecting unit configured to detect that there is an SD fault on the link; and a receiving unit configured to receive the second node by adding state information of the SD fault on the link after adding the preset protocol Notice of occurrence.
优选地,生成模块包括:封装单元,设置为在检测到SD故障后,通过IP和UDP封装方式将具有相同目的端节点的一条或多条LSP的标识信息统一封装至IP报文或UDP报文,生成一个或多个第一SD故障告警信息报文;标识单元,设置为采用IP报文或UDP报文中的UDP端口号标识一个或多个第一SD故障告警信息报文的类型为SD告警信息类型。Preferably, the generating module includes: an encapsulating unit, configured to uniformly encapsulate the identification information of one or more LSPs having the same destination end node into an IP packet or a UDP packet by using an IP and UDP encapsulation manner after detecting the SD fault. And generating one or more first SD fault alarm information messages; the identifier unit is configured to use the UDP port number in the IP packet or the UDP packet to identify one or more types of the first SD fault alarm information message as SD Type of alarm information.
优选地,上述系统还包括:多个端节点;每个端节点均包括:第二确定模块,设置为通过UDP端口号确定接收到的报文类型为第一SD故障告警信息报文;执行模块,设置为根据接收到的第一SD故障告警信息报文中携带的一条或多条LSP的标识信息触发该端节点所在的一条或多条LSP执行主备路径的切换操作。Preferably, the system further includes: a plurality of end nodes; each of the end nodes includes: a second determining module, configured to determine, by using the UDP port number, that the received packet type is the first SD fault alarm information message; And setting, according to the identifier information of one or more LSPs carried in the first SD fault alarm information packet, triggering one or more LSPs in which the end node is located to perform the switching operation of the active/standby path.
优选地,每个端节点均还包括:接收模块,设置为接收来自于第二节点的与该端节点对应的第二SD故障告警信息报文;第三确定模块,设置为根据第一节点反馈的第一SD故障告警信息报文和第二节点反馈的第二SD故障告警信息报文确定在链路上发生SD故障。Preferably, each end node further includes: a receiving module, configured to receive a second SD fault alarm information message corresponding to the end node from the second node; and a third determining module, configured to receive feedback according to the first node The first SD fault alarm information message and the second SD fault alarm information message fed back by the second node determine that an SD fault occurs on the link.
通过本发明实施例,在多条LSP经过的公共链路的相邻两端节点中,当其中一端节点确定其与对端节点之间的链路存在SD故障时,其中一端节点可以根据在链路上发生SD故障的状态信息生成一个或多个SD故障告警信息报文,在每个SD故障告警信息报文中分别携带有在多条LSP的各个端节点中与该第一SD故障告警信息报文对应的端节点所在的一条或多条LSP的标识信息;然后,其中一端节点将每个SD故障告警信息报文分别发送至对应的端节点,而后,对应的端节点可以根据SD故障告警信息报文中携带的一条或多条LSP的标识信息确定在链路上发生SD故障,和/或,触发该端节点所在的LSP执行主备路径的切换操作,由此解决了相关技术中在IP/MPLS网络端到端LSP上缺乏SD故障检测和通告方式的问题,进而可以在IP/MPLS网络上
实现SD告警通告功能,而且,相对于MPLS-TP的AIS告警功能而言,可以节省AIS告警传送和处理开销,避免在该链路上重新建立额外的LSP。In the embodiment of the present invention, when one end node determines that there is an SD fault in the link between the peer node and the peer node in the adjacent two ends of the common link through which the plurality of LSPs pass, one end node may be in the chain. The status information of the SD fault on the road generates one or more SD fault alarm information messages, and each SD fault alarm information message carries the first SD fault alarm information in each end node of the multiple LSPs. The identifier information of one or more LSPs where the end node corresponding to the packet is sent; then, one end node sends each SD fault alarm information packet to the corresponding end node, and then the corresponding end node can be notified according to the SD fault. The identification information of one or more LSPs carried in the information packet determines that an SD fault occurs on the link, and/or triggers the LSP of the end node to perform the switching operation of the active/standby path, thereby solving the related art. The problem of SD fault detection and notification mode on the end-to-end LSP of the IP/MPLS network can be solved on the IP/MPLS network.
The SD alarm notification function is implemented, and the AIS alarm transmission and processing overhead can be saved relative to the AIS alarm function of the MPLS-TP, thereby avoiding re-establishing additional LSPs on the link.
此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部分,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。在附图中:The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:
图1是根据本发明实施例的信号劣化故障的处理方法的流程图;1 is a flow chart of a method of processing a signal degradation fault according to an embodiment of the present invention;
图2是根据本发明优选实施例的AIS报文格式的示意图;2 is a schematic diagram of an AIS message format according to a preferred embodiment of the present invention;
图3是根据本发明优选实施例的Tunnel Information TLV报文结构的示意图;3 is a schematic diagram of a Tunnel Information TLV message structure according to a preferred embodiment of the present invention;
图4是根据本发明优选实施例的END TLV报文结构的示意图;4 is a schematic diagram showing the structure of an END TLV message according to a preferred embodiment of the present invention;
图5是根据本发明优选实施例的SD故障通告和定位的流程图;5 is a flow diagram of SD fault notification and location in accordance with a preferred embodiment of the present invention;
图6是根据本发明优选实施例的IP RAN传送路径的示意图;6 is a schematic diagram of an IP RAN transmission path in accordance with a preferred embodiment of the present invention;
图7是根据本发明优选实施例的IP RAN故障通告的示意图;7 is a schematic diagram of an IP RAN failure notification in accordance with a preferred embodiment of the present invention;
图8是根据本发明实施例的信号劣化故障的处理系统的结构框图;8 is a structural block diagram of a processing system for signal degradation failure according to an embodiment of the present invention;
图9是根据本发明优选实施例的信号劣化故障的处理系统的结构框图;9 is a block diagram showing the structure of a processing system for signal degradation failures in accordance with a preferred embodiment of the present invention;
图10是根据本发明优选实施例的SD故障通告和定位系统的结构示意图。10 is a block diagram showing the structure of an SD fault notification and positioning system in accordance with a preferred embodiment of the present invention.
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
图1是根据本发明实施例的信号劣化故障的处理方法的流程图。如图1所示,该方法可以包括以下处理步骤:1 is a flow chart of a method of processing a signal degradation fault in accordance with an embodiment of the present invention. As shown in FIG. 1, the method may include the following processing steps:
步骤S102:第一节点确定在该第一节点与第二节点之间的链路存在SD故障,其中,第一节点与第二节点为多条LSP经过的公共链路的相邻两端节点;
Step S102: The first node determines that there is an SD fault in the link between the first node and the second node, where the first node and the second node are adjacent two-node nodes of a common link through which multiple LSPs pass;
步骤S104:第一节点根据在链路上发生SD故障的状态信息生成一个或多个第一SD故障告警信息报文,其中,每个第一SD故障告警信息报文中分别携带有与该第一SD故障告警信息报文对应的端节点所在的一条或多条LSP的标识信息;Step S104: The first node generates one or more first SD fault alarm information messages according to the status information of the SD fault occurring on the link, where each first SD fault alarm information message carries the same Identification information of one or more LSPs where the end node corresponding to the SD fault alarm information packet is located;
步骤S106:第一节点将每个第一SD故障告警信息报文分别发送至对应的端节点,其中,每个第一SD故障告警信息报文用于对应的端节点确定在链路上发生SD故障,和/或,触发该端节点所在的一条或多条LSP执行主备路径的切换操作。Step S106: The first node sends each first SD fault alarm information message to the corresponding end node, where each first SD fault alarm information message is used by the corresponding end node to determine that SD occurs on the link. The fault, and/or triggering one or more LSPs where the end node is located to perform the switching operation of the active/standby path.
相关技术中,在IP/MPLS网络端到端LSP上缺乏SD故障检测和通告方式。采用如图1所示的方法,在多条LSP经过的公共链路的相邻两端节点中,当其中一端节点确定其与对端节点之间的链路存在SD故障时,其中一端节点可以根据在链路上发生SD故障的状态信息生成一个或多个SD故障告警信息报文,在每个SD故障告警信息报文中分别携带有在多条LSP的各个端节点中与该第一SD故障告警信息报文对应的端节点所在的一条或多条LSP的标识信息;然后,其中一端节点将每个SD故障告警信息报文分别发送至对应的端节点,而后,对应的端节点可以根据SD故障告警信息报文中携带的一条或多条LSP的标识信息确定在链路上发生SD故障,和/或,触发该端节点所在的LSP执行主备路径的切换操作,由此解决了相关技术中在IP/MPLS网络端到端LSP上缺乏SD故障检测和通告方式的问题,进而可以在IP/MPLS网络上实现SD告警通告功能,而且,相对于MPLS-TP的AIS告警功能而言,可以节省AIS告警传送和处理开销,避免在该链路上重新建立额外的LSP。In the related art, there is a lack of SD fault detection and notification mode on the end-to-end LSP of the IP/MPLS network. In the method shown in FIG. 1 , when one end node determines that there is an SD fault on the link between the peer node and the peer node in the neighboring nodes of the common link through which the plurality of LSPs pass, one end node may Generating one or more SD fault alarm information messages according to the status information of the SD fault occurring on the link, and each SD fault alarm information packet carries each of the plurality of LSPs and the first SD The identification information of one or more LSPs where the end node corresponding to the fault alarm information packet is located; then, one end node sends each SD fault alarm information packet to the corresponding end node, and then the corresponding end node can be based on The identification information of one or more LSPs carried in the SD fault alarm information packet determines that an SD fault occurs on the link, and/or triggers the LSP where the end node is located to perform the switching operation of the active/standby path, thereby solving the related In the technology, there is a lack of SD fault detection and notification mode on the IP/MPLS network end-to-end LSP, and thus the SD alarm notification function can be implemented on the IP/MPLS network, and the AIS advertisement relative to the MPLS-TP In terms of the alarm function, AIS alarm transmission and processing overhead can be saved, and additional LSPs can be re-established on the link.
优选地,在步骤S102中,第一节点确定链路存在SD故障可以包括但不限于以下方式之一:Preferably, in step S102, the first node determines that the link has an SD fault, which may include but is not limited to one of the following manners:
方式一、第一节点检测到(例如:通过操作管理维护(OAM)机制进行检测)链路上存在SD故障;Method 1: The first node detects (for example, detecting by an Operation Management and Maintenance (OAM) mechanism) that there is an SD fault on the link;
方式二、第一节点接收到第二节点通过在预设协议(例如:扩展的链路层发现协议(LLDP))中添加在链路上存在SD故障的状态信息后发生的通告。Manner 2: The first node receives the second node by adding an announcement that occurs after the status information of the SD fault exists on the link in a preset protocol (for example, Extended Link Layer Discovery Protocol (LLDP)).
在优选实施例中,链路节点通过链路层OAM机制(例如:循环冗余检查(CRC)、连接故障管理(CFM)、测试模式选择(TMS)等差错检测机制)来检测该链路是否存在SD故障。若检测到SD故障,则通过IP和UDP封装方式将经过该链路具有相同目的节点的多个LSP路径或隧道ID信息统一封装到IP/UDP报文中去,并采用特定的UDP目的端口来标识SD故障告警报文。例如,通过AIS报文进行封装,图2是根据本发明优选实施例的AIS报文格式的示意图。如图2所示,隧道(Tunnel)标签长度值(TLV)头(Header)为可选字段。图3是根据本发明优选实施例的隧道信息(Tunnel
Information)TLV报文结构的示意图。图4是根据本发明优选实施例的END TLV报文结构的示意图。如图3和图4所示,END TLV主要用来指示Tunnel TLV结束标识。而当只有单端节点检测到故障时,则需要该端节点通过扩展LLDP协议中端口SD状态信息向对端节点发出通告,以便对端节点获知其对应链路上的SD故障状态信息。In a preferred embodiment, the link node detects whether the link is through a link layer OAM mechanism (eg, Cyclic Redundancy Check (CRC), Connection Failure Management (CFM), Test Mode Selection (TMS), etc.) There is an SD failure. If an SD fault is detected, the LSP path or tunnel ID information of the same destination node in the link is uniformly encapsulated into IP/UDP packets through IP and UDP encapsulation, and a specific UDP destination port is used. Identifies the SD fault alarm packet. For example, encapsulation is performed by AIS message. FIG. 2 is a schematic diagram of an AIS message format according to a preferred embodiment of the present invention. As shown in Figure 2, the Tunnel Tag Length Value (TLV) Header is an optional field. 3 is a tunnel information (Tunnel) in accordance with a preferred embodiment of the present invention
Information) Schematic diagram of the TLV message structure. 4 is a schematic diagram of an END TLV message structure in accordance with a preferred embodiment of the present invention. As shown in Figure 3 and Figure 4, the END TLV is mainly used to indicate the end of the Tunnel TLV. When only the single-ended node detects the fault, the end node needs to announce the SD state information of the port in the LLDP protocol to the opposite node, so that the peer node knows the SD fault status information on the corresponding link.
优选地,在步骤S104中,第一节点生成一个或多个第一SD故障告警信息报文可以包括以下操作:Preferably, in step S104, the first node generating one or more first SD fault alarm information messages may include the following operations:
步骤S1:第一节点在检测到SD故障后,通过互联网协议(IP)和用户数据包协议(UDP)封装方式将具有相同目的端节点的一条或多条LSP的标识信息统一封装至IP报文或UDP报文,生成一个或多个第一SD故障告警信息报文;Step S1: After detecting the SD fault, the first node uniformly encapsulates the identifier information of one or more LSPs with the same destination end node into the IP packet through the Internet Protocol (IP) and the User Data Protocol (UDP) encapsulation manner. Or UDP packet, generating one or more first SD fault alarm information messages;
步骤S2:第一节点采用IP报文或UDP报文中的UDP端口号标识一个或多个第一SD故障告警信息报文的类型为SD告警信息类型。Step S2: The first node uses the UDP port number in the IP packet or the UDP packet to identify one or more types of the first SD fault alarm information packet as the SD alarm information type.
优选地,在步骤S106,第一节点将每个第一SD故障告警信息报文分别发送至对应的端节点之后,还可以包括以下步骤:Preferably, after the first node sends each first SD fault alarm information message to the corresponding end node, the first node may further include the following steps:
步骤S3:对应的端节点通过UDP端口号确定接收到的报文类型为第一SD故障告警信息报文;Step S3: The corresponding end node determines, by using the UDP port number, that the received packet type is the first SD fault alarm information packet;
步骤S4:对应的端节点根据接收到的第一SD故障告警信息报文中携带的一条或多条LSP的标识信息触发该端节点所在的一条或多条LSP执行主备路径的切换操作。Step S4: The corresponding end node triggers the switching operation of the active/standby path by one or more LSPs where the end node is located according to the identifier information of one or more LSPs that are carried in the first SD fault alarm information packet.
在优选实施例中,主动检测到或被通告SD故障的节点在生成SD告警报文后,可以通过IP和UDP封装方式将SD告警报文发送至该端链路上传送的LSP上端节点。LSP上端节点在接收到通过IP和UDP方式封装的SD故障告警信息后,可以通过UDP端口号判断其为SD故障告警报文,然后根据报文中封装的LSP ID或Tunnel ID信息判断出在本节点上哪些LSP或Tunnel出现SD故障可能性,从而触发相应的LSP或Tunnel进行主备切换。In a preferred embodiment, the node that actively detects or is notified of the SD fault can send the SD alarm packet to the upper LSP node transmitted on the end link by using the IP and UDP encapsulation mode after generating the SD alarm packet. After receiving the SD fault alarm information encapsulated by the IP and UDP modes, the LSP upper node can determine the SD fault alarm packet by using the UDP port number, and then determine the current LSP ID or the tunnel ID information encapsulated in the packet. The LSP or the tunnel is faulty on the LSP or the tunnel. The LSP or tunnel is triggered to perform the active/standby switchover.
优选地,在步骤S106,第一节点将每个第一SD故障告警信息报文发送至对应的端节点之后,还可以包括以下操作:Preferably, after the first node sends each first SD fault alarm information message to the corresponding end node, the first node may further include the following operations:
步骤S5:对应的端节点接收来自于第二节点的与该端节点对应的第二SD故障告警信息报文;
Step S5: The corresponding end node receives the second SD fault alarm information message corresponding to the end node from the second node;
步骤S6:对应的端节点根据第一节点反馈的第一SD故障告警信息报文和第二节点反馈的第二SD故障告警信息报文确定在链路上发生SD故障。Step S6: The corresponding end node determines that an SD fault occurs on the link according to the first SD fault alarm information message fed back by the first node and the second SD fault alarm information message fed back by the second node.
在优选实施例中,主动检测到或被通告SD故障的节点在生成SD告警报文后,可以通过IP和UDP封装方式将SD告警报文发送至该端链路上传送的LSP上端节点。LSP上端节点在接收到通过IP和UDP方式封装的SD故障告警信息后,可以通过UDP端口号判断其为SD故障告警报文,然后根据报文中封装的LSP ID或Tunnel ID信息判断出在本节点上哪些LSP或Tunnel出现SD故障可能性,从而根据SD故障链路上节点所反馈的SD故障告警信息报文判断出SD故障链路的位置。In a preferred embodiment, the node that actively detects or is notified of the SD fault can send the SD alarm packet to the upper LSP node transmitted on the end link by using the IP and UDP encapsulation mode after generating the SD alarm packet. After receiving the SD fault alarm information encapsulated by the IP and UDP modes, the LSP upper node can determine the SD fault alarm packet by using the UDP port number, and then determine the current LSP ID or the tunnel ID information encapsulated in the packet. Which LSPs or tunnels on the node have the possibility of SD failure, so that the location of the SD faulty link is determined according to the SD fault alarm information message fed back by the node on the SD fault link.
作为本发明的一个优选实施例,图5是根据本发明优选实施例的SD故障通告和定位的流程图。如图5所示,该流程可以包括以下处理步骤:As a preferred embodiment of the present invention, FIG. 5 is a flow chart of SD fault notification and location in accordance with a preferred embodiment of the present invention. As shown in FIG. 5, the process may include the following processing steps:
步骤S502:链路节点通过链路层OAM机制(例如:CRC、CFM以及TMS等差错检测机制)进行SD故障检测;Step S502: The link node performs SD fault detection through a link layer OAM mechanism (for example, error detection mechanisms such as CRC, CFM, and TMS);
步骤S504:链路节点判断该链路是否存在SD故障;如果存在,则继续执行步骤S506;如果否,则返回步骤S502,继续进行SD故障检测;Step S504: The link node determines whether the link has an SD fault; if yes, proceeds to step S506; if not, returns to step S502 to continue SD fault detection;
步骤S506:当只有单端节点检测到故障时,则需要该端节点通过扩展LLDP协议中端口SD状态信息向对端节点发出通告,以便对端节点获知其对应链路上的SD故障状态信息;Step S506: When only the single-ended node detects the fault, the end node needs to send an advertisement to the opposite node by extending the port SD state information in the LLDP protocol, so that the peer node learns the SD fault state information on the corresponding link.
步骤S508:链路节点通过IP和UDP封装方式将经过该链路具有相同目的节点的多个LSP路径或隧道ID信息统一封装到IP/UDP报文中;Step S508: The link node uniformly encapsulates multiple LSP path or tunnel ID information of the same destination node in the link into the IP/UDP packet by using the IP and UDP encapsulation manner;
步骤S510:链路节点采用特定的UDP目的端口来标识SD故障告警报文;链路节点在主动检测到或被通告SD故障的节点在生成SD告警报文后,可以通过IP和UDP封装方式将SD告警报文发送至该端链路上传送的LSP上端节点;Step S510: The link node uses a specific UDP destination port to identify the SD fault alarm message; after the node that actively detects or is notified of the SD fault, the link node can generate the SD alarm message by IP and UDP encapsulation. The SD alarm packet is sent to the upper node of the LSP transmitted on the link of the end;
步骤S512:LSP上端节点在接收到通过IP和UDP方式封装的SD故障告警信息后,可以通过UDP端口号判断其为SD故障告警报文,然后根据报文中封装的LSP ID或Tunnel ID信息判断出在本节点上哪些LSP或Tunnel出现SD故障可能性,从而触发相应的LSP或Tunnel进行主备切换;Step S512: After receiving the SD fault alarm information encapsulated by the IP and UDP modes, the LSP upper node can determine the SD fault alarm packet by using the UDP port number, and then judge according to the LSP ID or the tunnel ID information encapsulated in the packet. The LSP or the tunnel is faulty on the LSP or the tunnel. The LSP or the tunnel is triggered to perform the active/standby switchover.
步骤S514:LSP上端节点根据SD故障链路上节点所反馈的SD故障告警信息报文判断出SD故障链路的位置。
Step S514: The upper node of the LSP determines the location of the SD faulty link according to the SD fault alarm information message fed back by the node on the SD fault link.
下面以IP RAN传送路径为例对SD告警通告的实施过程做进一步的描述。The following takes the IP RAN transmission path as an example to further describe the implementation process of the SD alarm notification.
图6是根据本发明优选实施例的IP RAN传送路径的示意图。图7是根据本发明优选实施例的IP RAN故障通告的示意图。如图6和图7所示,假如在IP RAN网络上存在两个LSP,其分别为LSP1(A—C—D—E)和LSP2(B—C—D—E)。当C或D节点通过链路层的CRC、TMS和CFM中的方式之一检测到该链路存在信号劣化(SD)后,可以通过扩展LLDP SD端口状态向对端相邻节点发出通告,例如:D检测到C—D所在端口存在故障,则通过LLDP报文通告给对端C节点已经检测到SD故障;相反,当C检测到D—C链路存在故障时,同样会向对端节点D发出通告。6 is a schematic diagram of an IP RAN transmission path in accordance with a preferred embodiment of the present invention. 7 is a schematic diagram of an IP RAN failure notification in accordance with a preferred embodiment of the present invention. As shown in FIG. 6 and FIG. 7, if there are two LSPs on the IP RAN network, they are LSP1 (A-C-D-E) and LSP2 (B-C-D-E), respectively. After the C or D node detects that the link has signal degradation (SD) through one of the CRC, TMS, and CFM modes of the link layer, the LLDP SD port status may be extended to notify the neighboring node of the peer, for example, :D detects that the port where C-D is faulty, and then advertises the LLDP packet to the peer C node that the SD fault has been detected. Conversely, when C detects that the D-C link is faulty, it also reports to the peer node. D issues a notice.
当故障相邻节点自身检测或者被对端相邻节点通告链路上存在SD故障后,生成AIS告警信息报文,即C将会产生以下三种SD AIS故障报文:其一、在SD AIS故障告警报文中携带有LSP 1信息并通过IP和UDP封装方式发送至A节点;其二、在SDAIS报文中携带有LSP 2信息并通过IP和UDP封装方式发送至B节点,同时,还生成一种携带有LSP1和LSP2信息的SD AIS报文并发送至E节点;D同样也会产生上述三种AIS报文并通过IP和UDP封装方式,然后分别发送至A、B、E端节点。An AIS alarm message is generated when the faulty neighboring node detects the fault or the neighboring node advertises an SD fault on the link. That is, C will generate the following three types of SD AIS fault packets: First, in SD AIS The fault alarm packet carries the LSP 1 information and is sent to the A node through IP and UDP encapsulation. Second, the SDAIS packet carries the LSP 2 information and is sent to the Node B through IP and UDP encapsulation. Generates an SD AIS packet carrying LSP1 and LSP2 information and sends it to the E node. D also generates the above three AIS packets and encapsulates them in IP and UDP, and then sends them to the A, B, and E end nodes. .
当LSP1和LSP2上端节点A、B、E接收到SD链路两端节点C和D发送过来的SD AIS告警报文时,可以根据UDP端口号分析出此为SD AIS告警报文,并根据SD AIS告警报文中所携带的LSP ID信息进一步判断本节点哪些LSP或隧道上会出现SD的可能性以及出现SD链路的位置。例如:A节点接收到C和D发送过来AIS告警报文,一方面可以根据AIS反馈回来的信息判断出当前出现SD故障位置在C—D链路上;另一方面还可以根据AIS告警报文中的LSP ID信息来判断当前LSP1可能会出现SD故障;而对于B而言,则可以判断出LSP2会出现SD故障;而对于E节点而言,则可以判断出LSP1和LSP2均有可能出现SD故障。When the LSP1 and LSP2 upper nodes A, B, and E receive the SD AIS alarms sent from the nodes C and D on the two ends of the SD link, the UDP port number can be analyzed based on the UDP port number. The LSP ID information carried in the AIS alarm packet further determines which LSPs or tunnels on the node are likely to have SD and the location of the SD link. For example, the A node receives the AIS alarm packet sent by C and D. On the one hand, it can judge the current SD fault location on the C-D link according to the information fed back by the AIS. On the other hand, it can also be based on the AIS alarm packet. The LSP ID information is used to determine that the current LSP1 may have an SD fault. For B, it can be determined that the LSP2 will have an SD fault. For the E node, it can be determined that both LSP1 and LSP2 may have SD. malfunction.
当LSP上端节点A、B、E在接收到中间SD链路的两端节点C和D所发送的AIS告警报文后,对可能发生SD故障的LSP1以及LSP2路径触发主备路径的切换操作。After receiving the AIS alarm packet sent by the nodes C and D of the intermediate SD link, the LSP upper node A, B, and E trigger the switching operation of the active and standby paths on the LSP1 and LSP2 paths where the SD fault may occur.
图8是根据本发明实施例的信号劣化故障的处理系统的结构框图。如图8所示,该信号劣化故障的处理系统可以包括:第一节点10;第一节点10可以包括:第一确定模块100,设置为确定在该第一节点与第二节点之间的链路存在SD故障,其中,第一节点与第二节点为多条LSP经过的公共链路的相邻两端节点;生成模块102,设置为根据在链路上发生SD故障的状态信息生成一个或多个第一SD故障告警信息报文,其中,每个第一SD故障告警信息报文中分别携带有与该第一SD故障告警信息报文对应的端节点所在的一条或多条LSP的标识信息;发送模块104,设置为将每个第一SD
故障告警信息报文分别发送至对应的端节点,其中,每个第一SD故障告警信息报文用于对应的端节点按照该第一SD故障告警信息报文中携带的一条或多条LSP的标识信息确定在链路上发生SD故障,和/或,触发该端节点所在的一条或多条LSP执行主备路径的切换操作。FIG. 8 is a block diagram showing the structure of a processing system for signal degradation failure according to an embodiment of the present invention. As shown in FIG. 8, the processing system for the signal degradation fault may include: a first node 10; the first node 10 may include: a first determining module 100 configured to determine a chain between the first node and the second node The path has an SD fault, wherein the first node and the second node are adjacent two-node nodes of the common link through which the plurality of LSPs pass; and the generating module 102 is configured to generate one or according to status information of the SD fault occurring on the link. a plurality of first SD failure alarm information messages, wherein each of the first SD failure alarm information messages respectively carries an identifier of one or more LSPs where the end node corresponding to the first SD failure alarm information message is located Information; sending module 104, set to each of the first SD
The fault alarm information message is sent to the corresponding end node, where each first SD fault alarm information message is used by the corresponding end node according to one or more LSPs carried in the first SD fault alarm information message. The identification information determines that an SD fault occurs on the link, and/or triggers one or more LSPs in which the end node is located to perform a switching operation of the active/standby path.
采用如图8所示的系统,解决了相关技术中在IP/MPLS网络端到端LSP上缺乏SD故障检测和通告方式的问题,进而可以在IP/MPLS网络上实现SD告警通告功能,而且,相对于MPLS-TP的AIS告警功能而言,可以节省AIS告警传送和处理开销,避免在该链路上重新建立额外的LSP。The system shown in FIG. 8 solves the problem of lack of SD fault detection and notification mode on the IP/MPLS network end-to-end LSP in the related art, and can implement the SD alarm notification function on the IP/MPLS network. Compared with the AIS alarm function of MPLS-TP, the AIS alarm transmission and processing overhead can be saved, and additional LSPs can be re-established on the link.
优选地,第一确定模块100可以包括:检测单元(图中未示出),设置为检测链路上存在SD故障;接收单元(图中未示出),设置为接收到第二节点通过在预设协议中添加在链路上存在SD故障的状态信息后发生的通告。Preferably, the first determining module 100 may include: a detecting unit (not shown) configured to detect that there is an SD fault on the link; a receiving unit (not shown) configured to receive the second node by The preset protocol adds an announcement that occurs after the status information of the SD fault exists on the link.
优选地,生成模块102可以包括:封装单元(图中未示出),设置为在检测到SD故障后,通过IP和UDP封装方式将具有相同目的端节点的一条或多条LSP的标识信息统一封装至IP报文或UDP报文,生成一个或多个第一SD故障告警信息报文;标识单元(图中未示出),设置为采用IP报文或UDP报文中的UDP端口号标识一个或多个第一SD故障告警信息报文的类型为SD告警信息类型。Preferably, the generating module 102 may include: a packaging unit (not shown) configured to unify the identification information of one or more LSPs having the same destination node by using an IP and UDP encapsulation manner after detecting the SD failure. The packet is encapsulated into an IP packet or a UDP packet, and one or more first SD fault alarm information packets are generated. The identifier unit (not shown) is configured to use the UDP port number identifier in the IP packet or the UDP packet. The type of the one or more first SD fault alarm information packets is an SD alarm information type.
优选地,如图9所示,上述系统还可以包括:多个端节点20;每个端节点20均可以包括:第二确定模块200,设置为通过UDP端口号确定接收到的报文类型为第一SD故障告警信息报文;执行模块202,设置为根据接收到的第一SD故障告警信息报文中携带的一条或多条LSP的标识信息触发该端节点所在的一条或多条LSP执行主备路径的切换操作。Preferably, as shown in FIG. 9, the system may further include: a plurality of end nodes 20; each end node 20 may include: a second determining module 200 configured to determine, by using a UDP port number, that the received packet type is The first SD fault alarm information message; the execution module 202 is configured to trigger one or more LSPs where the end node is located according to the identifier information of one or more LSPs carried in the received first SD fault alarm information message Switching operation between the active and standby paths.
优选地,如图9所示,每个端节点20均还可以包括:接收模块204,设置为接收来自于第二节点的与该端节点对应的第二SD故障告警信息报文;第三确定模块206,设置为根据第一节点反馈的第一SD故障告警信息报文和第二节点反馈的第二SD故障告警信息报文确定在链路上发生SD故障。Preferably, as shown in FIG. 9, each end node 20 may further include: a receiving module 204, configured to receive a second SD fault alarm information message corresponding to the end node from the second node; The module 206 is configured to determine that an SD fault occurs on the link according to the first SD fault alarm information message fed back by the first node and the second SD fault alarm information message fed back by the second node.
下面将结合图10所示的优选实施方式对上述优选实施过程做进一步的描述。The above preferred implementation process will be further described below in conjunction with the preferred embodiment illustrated in FIG.
图10是根据本发明优选实施例的SD故障通告和定位系统的结构示意图。如10所示,该SD故障通告和定位系统可以包括:链路节点和客户层LSP上端节点,其中,链路节点可以包括:通告模块、封装模块和传送模块,而应用模块则存在于客户层LSP上端节点。在该优选实施例中,各个模块的功能如下:
10 is a block diagram showing the structure of an SD fault notification and positioning system in accordance with a preferred embodiment of the present invention. As shown in FIG. 10, the SD fault notification and positioning system may include: a link node and a client layer LSP upper node, where the link node may include: an advertisement module, a package module, and a transmission module, and the application module exists at the client layer. The upper node of the LSP. In the preferred embodiment, the functions of the various modules are as follows:
通告模块(相当于上述第一确定模块),主要设置为单向检测到SD故障信息,通过在链路层发现协议(LLDP)中增加端口SD状态信息,向上游节点通告SD故障状态信息。The notification module (corresponding to the first determining module) is mainly configured to detect the SD fault information in one direction, and notify the upstream node of the SD fault state information by adding the port SD state information in the link layer discovery protocol (LLDP).
封装模块(相当于上述生成模块),主要设置为在链路层检测到SD故障(例如:CRC、CFM以及TMS等差错检测机制)后,将具有相同的目的节点、受链路SD故障影响的多个客户层LSP标识(ID)信息封装到同一个IP/UDP报文中,然后采用特定的UDP端口号来标识该SD告警信息类型。The encapsulation module (corresponding to the above-mentioned generation module) is mainly configured to have the same destination node and be affected by the link SD failure after the link layer detects an SD failure (for example, an error detection mechanism such as CRC, CFM, and TMS). The LSP identifier (ID) information of multiple client layers is encapsulated into the same IP/UDP packet, and then the specific UDP port number is used to identify the type of the SD alarm information.
传送模块(相当于上述发送模块),主要设置为在检测到链路层SD故障的节点上,通过IP和UDP将经过封装处理后的SD故障信息以IP方式发送至相应的客户层LSP上端节点上。The transmitting module (corresponding to the sending module) is mainly configured to send the encapsulated SD fault information to the corresponding client layer LSP upper node through IP and UDP on the node that detects the link layer SD fault. on.
应用模块(相当于上述执行模块和第三确定模块),主要设置为当接收到SD故障告警信息时,可以根据受该故障影响的LSP,触发LSP主备切换或者故障位置的定位。The application module (equivalent to the above-mentioned execution module and the third determination module) is mainly configured to trigger the LSP active/standby switchover or the location of the fault location according to the LSP affected by the fault when receiving the SD fault alarm information.
从以上的描述中,可以看出,上述实施例实现了如下技术效果(需要说明的是这些效果是某些优选实施例可以达到的效果):本发明实施例所提供的技术方案涉及流量工程(TE)网络的操作管理维护(OAM)领域,主要在采用链路层对SD故障信息进行检测时,可以通过IP和用户数据包协议(UDP)方式将SD信号劣化信息发送至在该服务链路上传送的客户LSP上的两端节点,以便完成SD故障位置的定位以及相应LSP的主备切换,从而实现IP/MPLS网络LSP上SD故障定位和通告功能,还可以有效地避免由于AIS大量发送所产生的AIS报文处理和传送开销。From the above description, it can be seen that the above embodiments achieve the following technical effects (it is required that these effects are achievable by some preferred embodiments): the technical solution provided by the embodiments of the present invention relates to traffic engineering ( In the field of operation management and maintenance (OAM) of the network, the SD signal degradation information can be sent to the service link through the IP and User Datagram Protocol (UDP) mode when the link layer is used to detect the SD fault information. Both ends of the client LSP are transmitted to complete the location of the SD fault location and the active/standby switchover of the corresponding LSP, thereby implementing the SD fault location and advertisement function on the IP/MPLS network LSP, and effectively avoiding the large number of transmissions due to the AIS. The generated AIS message processing and transmission overhead.
显然,本领域的技术人员应该明白,上述的本发明的各模块或各步骤可以用通用的计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,可选地,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤,或者将它们分别制作成各个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样,本发明不限制于任何特定的硬件和软件结合。It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。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。
The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
如上所述,本发明实施例提供的一种信号劣化故障的处理方法及系统具有以下有益效果:在采用链路层对SD故障信息进行检测时,可以通过IP和UDP方式将SD信号劣化信息发送至在该服务链路上传送的客户LSP上的两端节点,以便完成SD故障位置的定位以及相应LSP的主备切换,从而实现IP/MPLS网络LSP上SD故障定位和通告功能,还可以有效地避免由于AIS大量发送所产生的AIS报文处理和传送开销。
As described above, the method and system for processing a signal degradation fault provided by the embodiment of the present invention have the following beneficial effects: when detecting the SD fault information by using the link layer, the SD signal degradation information can be sent by using IP and UDP methods. To the two-node nodes on the customer LSP transmitted on the service link, in order to complete the location of the SD fault location and the active/standby switchover of the corresponding LSP, thereby implementing the SD fault location and notification function on the IP/MPLS network LSP, which can also be effective. AIS message processing and transmission overhead due to a large number of AIS transmissions is avoided.
Claims (10)
- 一种信号劣化故障的处理方法,包括:A method for processing a signal degradation fault, comprising:第一节点确定在该第一节点与第二节点之间的链路存在信号劣化SD故障,其中,所述第一节点与所述第二节点为多条标记交换通道LSP经过的公共链路的相邻两端节点;Determining, by the first node, that the link between the first node and the second node has a signal degradation SD fault, wherein the first node and the second node are common links of the plurality of label switching channels LSP Adjacent two nodes;所述第一节点根据在所述链路上发生所述SD故障的状态信息生成一个或多个第一SD故障告警信息报文,其中,每个第一SD故障告警信息报文中分别携带有与该第一SD故障告警信息报文对应的端节点所在的一条或多条LSP的标识信息;The first node generates one or more first SD fault alarm information messages according to the status information of the SD fault occurring on the link, where each first SD fault alarm information message carries Identification information of one or more LSPs where the end node corresponding to the first SD fault alarm information packet is located;所述第一节点将每个第一SD故障告警信息报文分别发送至对应的端节点,其中,每个第一SD故障告警信息报文用于所述对应的端节点按照该第一SD故障告警信息报文中携带的所述一条或多条LSP的标识信息确定在所述链路上发生SD故障,和/或,触发该端节点所在的一条或多条LSP执行主备路径的切换操作。The first node sends each first SD fault alarm information message to a corresponding end node, where each first SD fault alarm information message is used by the corresponding end node according to the first SD fault. The identification information of the one or more LSPs carried in the alarm information packet determines that an SD fault occurs on the link, and/or triggers one or more LSPs where the end node is located to perform a switching operation between the active and standby paths. .
- 根据权利要求1所述的方法,其中,所述第一节点确定所述链路存在所述SD故障包括以下之一:The method of claim 1, wherein the determining, by the first node, that the link has the SD fault comprises one of the following:所述第一节点检测到所述链路上存在所述SD故障;The first node detects that the SD fault exists on the link;所述第一节点接收到所述第二节点通过在预设协议中添加在所述链路上存在所述SD故障的状态信息后发生的通告。The first node receives an advertisement that occurs after the second node adds the state information of the SD fault on the link by adding in a preset protocol.
- 根据权利要求1所述的方法,其中,所述第一节点生成所述一个或多个第一SD故障告警信息报文包括:The method of claim 1, wherein the generating, by the first node, the one or more first SD fault alarm information messages comprises:所述第一节点在检测到所述SD故障后,通过互联网协议IP和用户数据包协议UDP封装方式将具有相同目的端节点的一条或多条LSP的标识信息统一封装至IP报文和UDP报文,生成所述一个或多个第一SD故障告警信息报文;After detecting the SD fault, the first node uniformly encapsulates the identifier information of one or more LSPs with the same destination end node into the IP packet and the UDP packet through the Internet Protocol IP and the UDP encapsulation mode of the user data packet protocol. And generating the one or more first SD fault alarm information messages;所述第一节点采用所述IP报文和所述UDP报文中的UDP端口号标识所述SD故障告警信息报文的类型为SD告警信息类型。The first node uses the IP packet and the UDP port number in the UDP packet to identify the type of the SD fault alarm information packet as an SD alarm information type.
- 根据权利要求3所述的方法,其中,在所述第一节点将每个第一SD故障告警信息报文分别发送至所述对应的端节点之后,还包括: The method of claim 3, wherein after the first node sends each of the first SD fault alarm information messages to the corresponding end node, the method further includes:所述对应的端节点通过所述UDP端口号确定接收到的报文类型为SD故障告警信息报文;The corresponding end node determines, by using the UDP port number, that the received packet type is an SD fault alarm information packet;所述每个端节点根据所述接收到的第一SD故障告警信息报文中携带的所述一条或多条LSP的标识信息触发该端节点所在的一条或多条LSP执行主备路径的切换操作。The end node triggers the switching of the active/standby path by one or more LSPs where the end node is located according to the identifier information of the one or more LSPs that are carried in the received first SD fault alarm information packet. operating.
- 根据权利要求3或4所述的方法,其中,在所述第一节点将每个第一SD故障告警信息报文发送至所述对应的端节点之后,还包括:The method according to claim 3 or 4, wherein after the first node sends each first SD failure alarm information message to the corresponding end node, the method further includes:所述对应的端节点接收来自于所述第二节点的与该端节点对应的第二SD故障告警信息报文;The corresponding end node receives a second SD fault alarm information message corresponding to the end node from the second node;所述对应的端节点根据所述第一节点反馈的第一SD故障告警信息报文和所述第二节点反馈的第二SD故障告警信息报文确定在所述链路上发生SD故障。The corresponding end node determines that an SD fault occurs on the link according to the first SD fault alarm information message fed back by the first node and the second SD fault alarm information message fed back by the second node.
- 一种信号劣化故障的处理系统,包括:第一节点;A processing system for signal degradation failure, comprising: a first node;所述第一节点包括:The first node includes:第一确定模块,设置为确定在该第一节点与第二节点之间的链路存在信号劣化SD故障,其中,所述第一节点与所述第二节点为多条标记交换通道LSP经过的公共链路的相邻两端节点;a first determining module, configured to determine that a signal degradation SD fault exists between the first node and the second node, where the first node and the second node pass through a plurality of label switching channels LSP Adjacent two nodes of the public link;生成模块,设置为根据在所述链路上发生所述SD故障的状态信息生成一个或多个第一SD故障告警信息报文,其中,每个第一SD故障告警信息报文中分别携带有与该第一SD故障告警信息报文对应的端节点所在的一条或多条LSP的标识信息;a generating module, configured to generate one or more first SD fault alarm information messages according to the status information of the SD fault occurring on the link, where each first SD fault alarm information message carries Identification information of one or more LSPs where the end node corresponding to the first SD fault alarm information packet is located;发送模块,设置为将每个第一SD故障告警信息报文分别发送至对应的端节点,其中,每个第一SD故障告警信息报文用于所述对应的端节点按照该第一SD故障告警信息报文中携带的所述一条或多条LSP的标识信息确定在所述链路上发生SD故障,和/或,触发该端节点所在的一条或多条LSP执行主备路径的切换操作。a sending module, configured to send each first SD fault alarm information message to a corresponding end node, where each first SD fault alarm information message is used by the corresponding end node according to the first SD fault The identification information of the one or more LSPs carried in the alarm information packet determines that an SD fault occurs on the link, and/or triggers one or more LSPs where the end node is located to perform a switching operation between the active and standby paths. .
- 根据权利要求6所述的系统,其中,所述第一确定模块包括:The system of claim 6 wherein said first determining module comprises:检测单元,设置为检测所述链路上存在所述SD故障;a detecting unit, configured to detect that the SD fault exists on the link;接收单元,设置为接收到所述第二节点通过在预设协议中添加在所述链路上存在所述SD故障的状态信息后发生的通告。 And a receiving unit, configured to receive, by the second node, an announcement that occurs after the presence of the status information of the SD fault on the link is added in a preset protocol.
- 根据权利要求6所述的系统,其中,所述生成模块包括:The system of claim 6 wherein said generating module comprises:封装单元,设置为在检测到所述SD故障后,通过互联网协议IP和用户数据包协议UDP封装方式将具有相同目的端节点的一条或多条LSP的标识信息统一封装至IP报文或UDP报文,生成所述一个或多个第一SD故障告警信息报文;The encapsulation unit is configured to uniformly encapsulate the identification information of one or more LSPs having the same destination end node into the IP packet or the UDP packet by using the Internet Protocol IP and the User Data Protocol (UDP) encapsulation mode after detecting the SD fault. And generating the one or more first SD fault alarm information messages;标识单元,设置为采用所述IP报文或所述UDP报文中的UDP端口号标识所述SD故障告警信息报文的类型为SD告警信息类型。The identifier unit is configured to identify, by using the IP packet or the UDP port number in the UDP packet, the type of the SD fault alarm information packet as an SD alarm information type.
- 根据权利要求8所述的系统,其中,所述系统还包括:多个端节点;The system of claim 8 wherein said system further comprises: a plurality of end nodes;每个端节点均包括:Each end node includes:第二确定模块,设置为通过所述UDP端口号确定接收到的报文类型为SD故障告警信息报文;a second determining module, configured to determine, by using the UDP port number, that the received packet type is an SD fault alarm information packet;执行模块,设置为根据所述接收到的第一SD故障告警信息报文中携带的所述一条或多条LSP的标识信息触发该端节点所在的一条或多条LSP执行主备路径的切换操作。The execution module is configured to trigger one or more LSPs in which the end node is located to perform the switching operation of the active/standby path according to the identifier information of the one or more LSPs that are carried in the received first SD fault alarm information packet .
- 根据权利要求9所述的系统,其中,所述每个端节点均还包括:The system of claim 9 wherein each of said end nodes further comprises:接收模块,设置为接收来自于所述第二节点的与该端节点对应的第二SD故障告警信息报文;a receiving module, configured to receive a second SD fault alarm information message corresponding to the end node from the second node;第三确定模块,设置为根据所述第一节点反馈的第一SD故障告警信息报文和所述第二节点反馈的第二SD故障告警信息报文确定在所述链路上发生SD故障。 The third determining module is configured to determine that an SD fault occurs on the link according to the first SD fault alarm information message fed back by the first node and the second SD fault alarm information message fed back by the second node.
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