WO2012159273A1 - Procédé et dispositif de détection de défauts - Google Patents

Procédé et dispositif de détection de défauts Download PDF

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Publication number
WO2012159273A1
WO2012159273A1 PCT/CN2011/074698 CN2011074698W WO2012159273A1 WO 2012159273 A1 WO2012159273 A1 WO 2012159273A1 CN 2011074698 W CN2011074698 W CN 2011074698W WO 2012159273 A1 WO2012159273 A1 WO 2012159273A1
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WIPO (PCT)
Prior art keywords
node
lsp
nms
information
path
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Ceased
Application number
PCT/CN2011/074698
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English (en)
Chinese (zh)
Inventor
国辛纯
陈国义
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2011/074698 priority Critical patent/WO2012159273A1/fr
Priority to CN201180000538.7A priority patent/CN102934395B/zh
Publication of WO2012159273A1 publication Critical patent/WO2012159273A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0677—Localisation of faults

Definitions

  • the present invention relates to network communication technologies, and in particular, to a method and apparatus for fault detection.
  • OAM Operation for short
  • OAM's main functions include CC (Continuity) Check, Connectivity Detection), CV (Connectivity Verification), Trace (Tracking), PM (Performance) Monitoring, performance detection), PL (Performance Loss), and PD (Performance Ddelay).
  • MPLS Multiple Protocol Label Switch, multi-protocol label forwarding
  • MPLS-TP Multiple Protocol Label Switch-Transport Profile, multi-protocol label forwarding protocol transmission profile
  • Switch Path label forwarding path
  • Embodiments of the present invention provide a method and apparatus for fault detection, which avoids the blind spot problem of path detection and location caused by the absence of a reverse LSP in the prior art, thereby making the operation and maintenance of the network more convenient and accurate.
  • An aspect of the present invention provides a method for fault detection, including:
  • the network management system NMS receives the node information reported by the multiple nodes on the label forwarding path LSP in the multi-protocol label forwarding transmission profile MPLS-TP network, where the node information is that multiple nodes on the LSP are received through the data plane. After the LSP path detection packet is reported by the management plane, the node information includes a node ID.
  • the NMS determines a path failure of the LSP according to the path information of the LSP that is pre-maintained and the received node information of the multiple nodes.
  • Another aspect of the present invention provides a device for detecting a fault, the device being a network management system NMS, including:
  • a receiving unit configured to receive, in a multi-protocol label forwarding transmission profile MPLS-TP network, node information reported by a plurality of nodes on the label forwarding path LSP, where the node information is that multiple nodes on the LSP are in a data plane
  • the node information is reported by the management plane, and the node information includes a node ID.
  • a fault determining unit configured to determine a path fault of the LSP according to the path information of the LSP that is pre-maintained by the NMS and the node information of the multiple nodes that are received by the receiving unit.
  • the network management system reports the LSP path detection packet through the management plane, or the management plane and the data plane, after receiving the LSP path detection packet by the data plane.
  • the node information is used to locate and analyze the path fault of the LSP, which avoids the strict requirement that the reverse LSP exists on the first node of each node on the LSP in the prior art, thereby making the operation and maintenance of the network more convenient and accurate.
  • FIG. 1 is a flowchart of a method for detecting faults according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a format of providing MCC message delivery node information according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a link of four nodes in a P2MP unidirectional path according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an apparatus for detecting faults according to an embodiment of the present invention.
  • the embodiment of the invention provides a method for fault detection, as shown in FIG. 1 , including:
  • NMS Network Management
  • the network management system receives the node information reported by the multiple nodes on the LSP in the MPLS-TP network, where the node information is that the multiple nodes on the LSP receive the LSP path detection packet after receiving the LSP path through the data plane.
  • the node information is reported by the management plane, or reported by the management plane and the data plane, and the node information includes a node ID.
  • the LSP path detection packet received by the data plane may be an OAM packet for detecting an OAM function of the node or the path, and the OAM function may be one or more functions of a trace function.
  • the embodiment may further include: when there is no direct link between the NMS and the node A on the LSP, the NMS receives the node information of the node A forwarded by the node B on the LSP, where the There is a direct link between the node B and the NMS, and there is an LSPA-B with the node A as the starting point and the node B as the ending point between the node B and the node A, and the node B forwards to the node A of the NMS.
  • the node information is received by Node B from Node A through the LSPA-B.
  • the node A first sends the node information of the node A to the node B through the data plane, and then the node B reports the node information of the node A to the NMS through the management plane. Since the node information of the node A is finally reported by the node B to the NMS through the management plane, the node information can be considered to be reported by the management plane; since the node information of the node A is first sent by the node A to the node through the data plane. B, and then the node B reports to the NMS through the management plane. The node A to the NMS first pass through the data plane and then pass through the management plane. Therefore, the node information can also be reported to be reported through the data plane and the management plane.
  • the report information of the node information of the node A sent by the node A to the node B is reported to trigger the node B to report the node information of the node A to the NMS.
  • node A can pass MCC (Management Control Channel, management control channel)
  • MCC Management Control Channel, management control channel
  • the packet sends the node information of the node A to the node B, and the node information of the node A can also be sent to the node B by other transmission methods.
  • the header of the MCC packet is ACH (Assoclation Control Channel)
  • the format of the MCC packet is as shown in Figure 2, where "0001" is used to identify the header of the packet as ACH, so that it is distinguished from the data packet, and the ACH is passed through the data packet.
  • the transmission mode conveys the control channel of special information such as management, control or OAM; "Version” is used to identify the version number of the ACH; "Reserved” Indicates the reserved identifier bit, which is used to extend the packet; the Channel Type is used to identify the MCC packet to be delivered; ID (Protocol ID) is used to identify the protocol type information of the OAM information; "MCC Messge (MCC Message)" carries the node information.
  • the node information of the node A carried in the MCC packet needs to be sent to the NMS.
  • the embodiment may further include: when the NMS and the node A on the LSP have a direct link, the NMS receives the node information of the node A by using the direct link.
  • the NMS determines a path fault of the LSP according to the path information of the LSP that is pre-maintained and the received node information of the multiple nodes.
  • the embodiment may further include: when the NMS does not receive the node information of the node C on the LSP, and receives the node information of the neighbor node of the node C on the LSP, determine The LSP path between the node C and the neighbor node is in a fault state, or the node C is in a fault state.
  • the NMS in the embodiment of the present invention may include one or more network devices. There is no direct link between the NMS and the node A on the LSP. A device with a routing function is not defined between the node A of the NMS and the LSP. When there is no route between the NMS and the node A on the LSP. A functional device does not have a device with a routing function, and it can be understood that there is a direct link between the NMS and the node A on the LSP.
  • Node 1 and Node 3 have direct links with the NMS, respectively.
  • the direct link sends the node information of node 1 and node 3 directly to the NMS; the node 5 exists between the node 2 and the NMS, and the node 5 is a device that does not have a routing function (ie, a non-routing device), so in this implementation
  • the link between the node 2 and the NMS is also a direct link, so the node information of the node 2 can be directly sent to the NMS through the direct link.
  • the node 4 There is no direct link between the node 4 and the NMS, but there is an LSP4-3 with the node 4 as the starting point and the node 3 as the ending point between the node 4 and the node 3. Therefore, after receiving the LSP path detection packet, the node 4 will Its own node information is sent to the node 3 through the LSP 4-3, and the node 3 can send its own node information and the received node information of the node 4 to the NMS respectively, or can also send its own node information and the received node 4 The node information is sent to the NMS together.
  • Node 2 when LSP1-2, LSP1-3, and LSP1-4 are both normal, Node 2, Node 3, and Node 4 can report their respective node information to the NMS after receiving the LSP path detection message.
  • the node 4 cannot receive the LSP path detection packet, so the node information of the node 4 is not reported to the NMS.
  • the NMS can receive the node information of Node 2 and Node 3, but cannot receive the node information of Node 4. Therefore, the NMS determines that the LSP1-4 where the node 4 is located is faulty according to the path information of the LSP that is pre-maintained and the node information of the received multiple nodes.
  • the NMS determines that the LSP where the node 4 is located is faulty.
  • the NMS determines the path failure of the LSP according to the path information of the LSP that is pre-maintained and the node information of the node 1, the node 2, the node 3, and the node 4 reported by the node 1, the node 2, and the node 3. Specifically, if the NMS receives the node information of the node 1, the node 2, and the node 3, but does not receive the node information of the node 4, it determines that the node 4 in the LSP is faulty or the link between the node 3 and the node 4 is faulty.
  • the NMS analyzes the path fault of the LSP according to the path information of the LSP that is pre-maintained and the received node information, that is, each node passes the management plane after receiving the LSP path detection packet through the data plane, or
  • the management plane and the data plane report the information of the node to the NMS, so that the NMS can analyze and locate the network fault, avoiding the impact of a large number of OAM response packets on the data plane, and the OAM function cannot be performed normally in the prior art.
  • the problem of blind spot causing path detection and positioning, and replacing the first node by NMS reduces the workload of the first node, improves the accuracy of network fault location, and makes the operation and maintenance of the network more convenient and accurate.
  • the embodiment of the present invention provides a device for detecting a fault, and the device is an NMS. As shown in FIG. 4, the method includes:
  • the receiving unit 41 is configured to receive the node information reported by the multiple nodes on the label forwarding path LSP in the multi-protocol label forwarding transmission profile MPLS-TP network, where the node information includes a node ID, and the node information is the LSP. After receiving the LSP path detection packet through the data plane, the multiple nodes are reported by the management plane or reported by the management plane and the data plane.
  • the receiving unit 41 is configured to receive node information of the node A forwarded by the node B on the LSP, where the There is a direct link between the node B and the NMS, and there is an LSPA-B with the node A as the starting point and the node B as the ending point between the node B and the node A, and the node B forwards to the node A of the NMS.
  • the node information is received by Node B from Node A through the LSPA-B.
  • node A passes MCC (Management Control Channel, management control channel)
  • the message sends the node information of node A to node B.
  • the direct link means that there is no network device with a routing function on the link between the NMS and the node A.
  • the receiving unit 41 receives the node information of the node A through the direct link.
  • the fault determining unit 42 is configured to determine a path fault of the LSP according to the path information of the LSP that is pre-maintained by the NMS and the node information of the multiple nodes that are received by the receiving unit 41.
  • the fault determining unit 42 is configured to: Determining that the LSP path between the node C and the neighbor node is in a fault state, or the node C is in a fault state.
  • the receiving unit 41 and the fault determining unit 42 may be different hardware entities respectively.
  • the receiving unit 41 may be a receiving interface
  • the fault determining unit 42 may be a fault confirmer or a logic processing chip. .
  • the NMS analyzes the path fault of the locating LSP according to the path information of the LSP that is pre-maintained and the received node information, that is, each node passes the management plane after receiving the LSP path detection message through the data plane, or passes The management plane and the data plane report the information of the node to the NMS, so that the NMS can analyze and locate the network fault, avoiding the impact of a large number of OAM response packets on the data plane, and the OAM function cannot be performed normally in the prior art.
  • the problem of blind spot causing path detection and positioning, and replacing the first node by NMS reduces the workload of the first node, improves the accuracy of network fault location, and makes the operation and maintenance of the network more convenient and accurate.
  • the storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de détection de défauts ayant trait à la technologie de communication en réseau. Les solutions techniques selon les modes de réalisation de la présente invention comprennent les étapes suivantes: d'abord, un système de gestion de réseau (NMS) reçoit une information de nœuds rapportée séparément par une pluralité de nœuds sur un chemin à commutation d'étiquettes (LSP) dans un réseau à profil de transport de commutation d'étiquettes multi-protocoles (MPLS-TP), ladite information de nœuds étant rapportée par la pluralité de nœuds sur le chemin LSP via un plan de gestion, ou via un plan de gestion et un plan de données après la réception par la pluralité de nœuds à travers le plan de données de messages de détection de chemin LSP, et l'information de nœuds comprend une identité de nœuds (ID) ; ensuite le système NMS détermine le défaut de chemin du chemin LSP maintenu par le système NMS par avance et l'information de nœuds reçue de la pluralité de nœuds. Grâce aux solutions techniques selon les modes de réalisation de la présente invention, on évite la zone de silence dans la détection et le positionnement de chemin, qui est provoquée par la performance anormale de la fonction d'opération, administration et maintenance (OAM) du réseau dans l'art antérieur, et donc le fonctionnement et la maintenance du réseau sont plus commodes et plus précis.
PCT/CN2011/074698 2011-05-26 2011-05-26 Procédé et dispositif de détection de défauts Ceased WO2012159273A1 (fr)

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PCT/CN2011/074698 WO2012159273A1 (fr) 2011-05-26 2011-05-26 Procédé et dispositif de détection de défauts
CN201180000538.7A CN102934395B (zh) 2011-05-26 2011-05-26 一种故障检测的方法及装置

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PCT/CN2011/074698 WO2012159273A1 (fr) 2011-05-26 2011-05-26 Procédé et dispositif de détection de défauts

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CN116614349A (zh) 2019-02-22 2023-08-18 华为技术有限公司 定位网络故障的系统、方法和装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040103210A1 (en) * 2002-11-22 2004-05-27 Yasuki Fujii Network management apparatus
CN1925449A (zh) * 2005-08-29 2007-03-07 阿尔卡特公司 最小成本基于树的虚拟专用局域网服务结构中的弹性
CN101821990A (zh) * 2007-10-09 2010-09-01 Lm爱立信电话有限公司 处理网络中的故障的结构和方法
CN101997770A (zh) * 2009-08-14 2011-03-30 株式会社日立制作所 传输控制服务器、传输控制系统及预备路径设定方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040103210A1 (en) * 2002-11-22 2004-05-27 Yasuki Fujii Network management apparatus
CN1925449A (zh) * 2005-08-29 2007-03-07 阿尔卡特公司 最小成本基于树的虚拟专用局域网服务结构中的弹性
CN101821990A (zh) * 2007-10-09 2010-09-01 Lm爱立信电话有限公司 处理网络中的故障的结构和方法
CN101997770A (zh) * 2009-08-14 2011-03-30 株式会社日立制作所 传输控制服务器、传输控制系统及预备路径设定方法

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CN102934395B (zh) 2015-04-22

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