WO2007048307A1 - Méthode, système et dispositif réseau pour implémenter une maintenance d’administration d’exploitation dans un réseau - Google Patents

Méthode, système et dispositif réseau pour implémenter une maintenance d’administration d’exploitation dans un réseau Download PDF

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Publication number
WO2007048307A1
WO2007048307A1 PCT/CN2006/002457 CN2006002457W WO2007048307A1 WO 2007048307 A1 WO2007048307 A1 WO 2007048307A1 CN 2006002457 W CN2006002457 W CN 2006002457W WO 2007048307 A1 WO2007048307 A1 WO 2007048307A1
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WO
WIPO (PCT)
Prior art keywords
atm
ethernet
fault
message
terminal system
Prior art date
Application number
PCT/CN2006/002457
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English (en)
Chinese (zh)
Inventor
Hao Wang
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007048307A1 publication Critical patent/WO2007048307A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to the field of Ethernet and asynchronous transmission mode interworking network technologies, and in particular, to an implementation method, system and network device for operation and maintenance in an Ethernet and asynchronous transmission mode. Background of the invention
  • ETH Ethernet
  • DSL Digital Subscriber Line
  • ATM Asynchronous Transfer Mode
  • the alarm information can be interconnected in the ATM network.
  • the network model shown in Figure 1 for example, when the ATM terminal system 1 fails, the process of notifying the ATM terminal system 2 of the fault alarm message is:
  • the ME Maintenance Entity, Maintenance Entity
  • the ME Mainntenance Entity, Maintenance Entity
  • the ME generates a forward alarm message, that is, an ATM-AIS (Alarm Indication Signal) message, and sends the message to the ATM terminal system 2;
  • the ATM terminal system 2 After receiving the ATM-AIS packet, the ATM terminal system 2 confirms that the ATM terminal system 1 is faulty, and generates a backward alarm message, that is, an ATM-RDI (Remote Defect Indication Remote Fault Indication) message, and the ATM- The RDI message is sent to the ME of the ATM terminal system 1.
  • ATM-AIS Alarm Indication Signal
  • ATM-RDI Remote Defect Indication Remote Fault Indication
  • the ATM terminal system 1 sends an ATM-AIS packet to the ATM terminal system 2 during the IWF (Inter- Working).
  • Function, interworking function) Unit 1 encapsulates ATM-AIS packets according to the format defined by FATE. After the encapsulated ATM-AIS packets traverse the Ethernet network, they are decapsulated into ATM-AIS packets at IWF unit 2;
  • the terminal system 1 sends an ATM-RDI packet to the ATM terminal system 1
  • the ATM-RDI packet is encapsulated in the format defined by the FATE at the IF unit 2, and the encapsulated ATM-RDI packet traverses the Ethernet. After the network, it is decapsulated into an ATM-RDI message at IWF unit 1.
  • the alarm information can also communicate with each other on the Ethernet network.
  • the object of the present invention is to provide a method, a system, and a network device for implementing operation and maintenance in a network, which ensures that the implementation of the OAM interworking function when the Ethernet is used as the bearer network to carry the ATM service is beneficial to the implementation.
  • the ATM system carries out OAM work to speed up the troubleshooting process.
  • the present invention provides an implementation method for operation and maintenance in a network, including:
  • the fault message carrying the fault information is notified to the ATM terminal system;
  • the ATM terminal system operates and maintains the OAM operation according to the received Ethernet system failure message.
  • the step of confirming that the Ethernet system fails includes:
  • the IWF unit When the upstream interworking function IWF or the downstream IWF fault affects the OAM function of the Ethernet part of the IWF unit, the IWF unit confirms that the Ethernet virtual link Ethernet line is faulty; and/or when the Ethernet Line itself fails, the downstream IWF unit The maintenance entity ME of the Ethernet part detects that the Ethernet Line is in a fault state and confirms that the Ethernet Line has failed.
  • the step of confirming that the Ethernet system fails includes: When the link layer of the Ethernet line is faulty, the ME in the Ethernet sends the corresponding ETH-AIS packet to the downstream IWF unit. After receiving the packet, the ME of the Ethernet part of the IWF unit confirms that the Ethernet line is generated. malfunction.
  • the process of notifying the ATM terminal system includes:
  • the IWF unit confirms that the Ethernet line is faulty, the corresponding ATM alarm indication signal is generated and sent to the downstream ATM terminal system.
  • the process of notifying the ATM terminal system specifically includes:
  • the ME of the ATM part of the IWF unit After receiving the Ethernet Line fault information, the ME of the ATM part of the IWF unit generates the corresponding ATM-AIS packet and sends it to the ME sent to the downstream ATM terminal system.
  • the process of notifying the ATM terminal system further includes:
  • the ME of the ATM terminal system After receiving the ATM-AIS packet, the ME of the ATM terminal system sends an ATM remote fault indication ATM-RDI packet to the ME of the upstream ATM terminal system.
  • the invention also provides a system for implementing operation and maintenance in a network, comprising:
  • the Ethernet fault notification module notifies the OAM management module of the fault message carrying the fault information after confirming that the Ethernet system is faulty;
  • the OAM management module is configured in the ATM terminal system to perform OAM operations according to the received Ethernet system failure message.
  • the Ethernet fault notification module includes: an Ethernet fault message notification submodule and an ATM-AIS message sending submodule, and the ME of the ATM terminal system includes an OAM management module;
  • the Ethernet fault message notification sub-module is set in the ME of the Ethernet part of the IWF unit, and after the failure of the Ethernet line is confirmed, the fault information is notified to the ATM-AIS packet sending sub-module; the ATM-AIS packet sending sub-module , is set in the ME of the ATM part of the IWF unit, and constructs the corresponding ATM-AIS message according to the received fault information of the Ethernet line and sends it to the next The OAM management module in the ME of the ATM terminal system.
  • the Ethernet fault notification module further includes: an ATM-RDI packet sending submodule; and the ME of the upstream ATM terminal system includes an OAM management module;
  • the ATM-RDI message sending sub-module is configured in the ME of the ATM terminal system, and constructs an ATM-RDI message according to the ATM-AIS message transmitted by the ATM-AIS message sending sub-module, and sends the corresponding ATM-RDI message to the ATM-AIS message.
  • OAM management module in the ME of the upstream ATM terminal system.
  • Another implementation method for operation and maintenance in a network includes:
  • the IWF unit In the interworking network system of the Ethernet and asynchronous transmission mode ATM, the IWF unit generates a corresponding ATM alarm indication signal message according to the information received by the IWF unit or according to the detection result, and generates an ATM alarm indication signal. Notification to the ATM terminal system;
  • the ATM terminal system performs an OAM operation according to the received ATM alarm indication signal packet.
  • the foregoing method includes:
  • the ME of the Ethernet part of the IWF unit determines that when the Ethernet line fails, the fault information is notified to the ME of the ATM part of the IWF unit;
  • the ME of the ATM part of the IWF unit After receiving the Ethernet Line fault information, the ME of the ATM part of the IWF unit generates a corresponding ATM alarm indication signal and sends it to the ME sent to the downstream ATM terminal system.
  • the invention also provides a network device based on the interworking function, wherein the network device is provided with: an Ethernet fault notification module, and after confirming that the Ethernet system fails, notifying the ATM terminal system of the fault message carrying the fault information, so that the ATM The terminal system can perform OAM operations according to the received Ethernet system failure message.
  • the Ethernet fault notification module includes: an Ethernet fault message notification submodule, and an ATM-AIS packet sending submodule;
  • the Ethernet fault message notification sub-module is set in the ME of the Ethernet part of the IWF unit, and after confirming that the Ethernet line fails, notifying the ATM-AIS message sending sub-module;
  • the ATM-AIS message sending submodule is disposed in the ME of the ATM part of the IWF unit,
  • the corresponding ATM-AIS message is constructed according to the received fault information message of the Ethernet line and sent to the downstream ATM terminal system.
  • the upper ATM network can timely determine the cause and location of the ATM service fault according to the received fault message of the lower layer Ethernet, which is beneficial to speed up the fault handling process and improve the OAM mechanism when the Ethernet carries the ATM service. , to improve the operational and maintainability of the network;
  • FIG. 1 is a schematic diagram of networking of Ethernet and ATM services in the prior art
  • FIG. 2 is a schematic diagram of networking of Ethernet and ATM OAM according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a system according to an embodiment of the present invention. Mode for carrying out the invention
  • the Ethernet or the ATM network When the Ethernet is used as the bearer network to carry the ATM service, the Ethernet or the ATM network is faulty, which causes the ATM service to generate alarms.
  • the lower-layer Ethernet bearer network In order to facilitate the judgment of the alarms generated by the ATM service and speed up the fault handling process, the lower-layer Ethernet bearer network needs to be faulty. , notify the faulty information to the upper ATM network as soon as possible.
  • the OAM interworking function model in the Ethernet and ATM networks of the present invention is consistent with the Ethernet and ATM service interworking model proposed in FATE, as shown in FIG. 2 .
  • the ATM network is not aware of the existence of the Ethernet network between the ATM terminal systems, and runs the end-to-end OAM of the ATM network. Between the IWFs, To be aware of the existence of the Ethernet network, the OAM interworking function between the Ethernet and the ATM is required.
  • the IWF is a functional entity that implements OAM interworking. On an Ethernet network, only the related entities of the Ethernet exist and do not care about the services or OAM functions carried.
  • the method of the present invention is shown in FIG. 3 and includes the following steps:
  • Step 31 M of the Ethernet part of IWF2 confirms that the Ethernet Line has failed.
  • the IWF1 fault affects the OAM function of the Ethernet part of the IWF1
  • the EAM function of the Ethernet part of the IWF1 does not work normally.
  • the ETH-CC (Continuity check) packet in the IWF1 cannot be sent normally.
  • the ME part of the Ethernet part of the IWF2 When the Ethernet line is faulty, it is confirmed that the Ethernet line is faulty.
  • the IWF2 fault affects the OAM function of the Ethernet part of the IWF2 does not work normally, and the ETH-CC packet sent by the IWF1 is not received.
  • the ME of the Ethernet part of the IWF2 detects that the Ethernet Line is in a fault state, thereby confirming that the Ethernet Line has failed.
  • the ME of the Ethernet part of the IWF2 does not receive the ETH-CC packet sent by the IWF1.
  • the ME of the Ethernet part of the IWF2 detects that the Ethernet line is in the fault state, thus confirming that the Ethernet line is faulty.
  • the Ethernet OAM function entity When the link layer of the Ethernet line fails, the Ethernet OAM function entity generates the corresponding ETH-AIS packet and sends it to the IWF2. After receiving the packet, the ME of the Ethernet part of the IWF2 confirms that the Ethernet line is faulty. Step 32: After the ME of the Ethernet part of the IWF2 confirms that the Ethernet line has failed, notify the ME of the ATM part of the IWF2 of the Ethernet Line fault information.
  • Step 33 The ME of the ATM part of the IWF2 generates the corresponding ATM-AIS packet according to the fault notification of the Ethernet line.
  • Step 34 The ME of the ATM part of the IWF2 sends the ATM-AIS message to the ME of the ATM terminal system 2.
  • Step 35 After receiving the ATM-AIS packet, the ME of the ATM terminal system 2 generates the corresponding ATM-RDI packet and sends it to the ME of the ATM terminal system 1.
  • the ATM-RDI packet is encapsulated in the format defined by the FATE at the IWF unit 2, and the encapsulated ATM-RDI packet traverses the Ethernet network.
  • the IWF unit 1 is decapsulated into an ATM-RDI message.
  • Step 36 The ATM terminal system performs an OAM operation according to the received OAM alarm message (ATM-AIS or ATM-RDI message) about the Ethernet line.
  • ATM-AIS OAM alarm message
  • the ATM service fails to generate alarm information
  • the downstream ATM terminal system receives the corresponding Ethernet line OAM alarm message (ATM-AIS message)
  • ATM-RDI packet the ATM terminal system can determine that the ATM service failure is caused by the Ethernet Line failure, and the ATM network system is faulty, and the Ethernet is determined according to the information carried in the OAM alarm message. The location of the Line fault, which speeds up the troubleshooting process.
  • the ME in the ATM terminal system 1 When the upstream (ie, ATM terminal system 1) fails, the ME in the ATM terminal system 1 Generate a forward alarm message, that is, an ATM-AIS message, and send the message to the ME of the ATM terminal system 2; when the ME of the ATM terminal system 2 receives the ATM-AIS message, confirm the ATM terminal system 1 A fault occurs, and a backward alarm message, that is, an ATM-RDI message, is sent, and the ATM-RDI message is sent to the ME of the ATM terminal system 1.
  • a forward alarm message that is, an ATM-AIS message
  • the encapsulation/de-encapsulation process is required.
  • the IWF unit 1 is based on The format defined by the FATE encapsulates the ATM-AIS packet. After the encapsulated ATM-AIS packet traverses the Ethernet network, it is decapsulated into an ATM-AIS packet at the IWF unit 2. Similarly, the ATM terminal system 2 sends the ATM terminal system 2 to the ATM terminal system 1.
  • the ATM-RDI packet is encapsulated in the IWF unit 2 according to the format defined by the FATE. After the encapsulated ATM-RDI packet traverses the Ethernet network, the encapsulated ATM-RDI is encapsulated in the IWF unit 1. Message.
  • the ME in the ATM terminal system 2 When the ATM terminal system 2 fails, the ME in the ATM terminal system 2 generates an ATM-RDI message and sends the message to the ME of the ATM terminal system 1, when the ATM terminal system 1 receives the ATM-RDI message. , Confirm that the ATM terminal system 2 has failed.
  • the ATM terminal system 2 When the upstream IWF1 fails but does not affect the Ethernet Line function, and when the downstream IWF2 fails but does not affect the Ethernet Line function, the ATM terminal system 2 will not receive the ATM-CC packet sent by the upstream ATM terminal system 1, and the ATM terminal. The system 2 enters a fault state, and the ME of the ATM terminal system 2 generates a corresponding ATM-RDI message and transmits it to the ME of the ATM terminal system 1.
  • the present invention also provides a system for implementing OAM in a network. As shown in FIG. 4, the system includes: an Ethernet fault notification module and an OAM management module;
  • the operation of the Ethernet fault notification module is to notify the OAM management module of the fault message carrying the fault information when it is confirmed that the Ethernet system is faulty.
  • the OAM management module is configured in the ATM terminal system, and performs operations of: performing OAM operations according to the received Ethernet system failure message.
  • the Ethernet fault notification module is composed of an Ethernet fault message notification submodule and an ATM-AIS packet sending submodule; and an OAM management module is set in the ME of the downstream ATM terminal system; the Ethernet fault message notification submodule is set downstream
  • the ME in the Ethernet part of the IWF unit performs the following operations: When it is confirmed that the Ethernet line is faulty, the fault information is notified to the ATM-AIS message sending submodule.
  • the ATM-AIS packet sending sub-module is disposed in the ME of the ATM part of the downstream IWF unit, and performs the operation of constructing the corresponding ATM-AIS packet according to the received Ethernet Line fault information, and transmitting the corresponding ATM-AIS packet to the downstream ATM terminal system.
  • OAM management module in the ME is disposed in the ME of the ATM part of the downstream IWF unit, and performs the operation of constructing the corresponding ATM-AIS packet according to the received Ethernet Line fault information, and transmitting the corresponding ATM-AIS packet to the downstream ATM terminal system.
  • the Ethernet fault notification module further includes: an ATM-RDI packet sending sub-module; and an OAM management module is disposed in the ME of the upstream ATM terminal system;
  • the ATM-RDI packet sending sub-module is set in the ME of the downstream ATM terminal system, and the operation is: constructing the corresponding ATM-RDI packet according to the ATM-AIS packet transmitted by the ATM-AIS packet sending sub-module, and The OAM management module in the ME sent to the upstream ATM terminal system.
  • the system further includes: an ATM fault notification module, which is disposed in the ME of the ATM terminal system, and performs the operations as: when detecting that the ATM terminal system is in a fault state The fault message is notified to the OAM management module.
  • an ATM fault notification module which is disposed in the ME of the ATM terminal system, and performs the operations as: when detecting that the ATM terminal system is in a fault state The fault message is notified to the OAM management module.
  • the ATM fault notification module is composed of an upstream ATM terminal system failure notification sub-module and a downstream ATM terminal system failure notification sub-module.
  • the upstream ATM terminal system fault notification sub-module is set in the ME of the upstream ATM terminal system, and the operation is: when the upstream ATM terminal system is detected to be in a fault state, the corresponding ATM-AIS packet is configured and sent to the downstream.
  • OAM management module of ATM terminal system is set in the ME of the upstream ATM terminal system, and the operation is: when the upstream ATM terminal system is detected to be in a fault state, the corresponding ATM-AIS packet is configured and sent to the downstream.
  • the downstream ATM terminal system fault notification sub-module is disposed in the ME of the downstream ATM terminal system, and performs the following operations: when detecting that the downstream ATM terminal system is in a fault state, constructing a corresponding ATM-RDI packet and transmitting the corresponding ATM-RDI packet to the upstream ATM terminal.
  • the OAM management module of the system is disposed in the ME of the downstream ATM terminal system, and performs the following operations: when detecting that the downstream ATM terminal system is in a fault state, constructing a corresponding ATM-RDI packet and transmitting the corresponding ATM-RDI packet to the upstream ATM terminal.
  • the OAM management module in the system also performs the following operations: Perform OAM operations according to the received OAM alarm message (ATM-AIS or ATM-RDI message) about the ATM terminal system.
  • ATM-AIS OAM alarm message
  • ATM-RDI ATM-RDI message
  • the fault notification process can be completed under various fault conditions, ensuring the end-to-end OAM implementation mechanism between the Ethernet and the ATM network. Conducive to speed up the troubleshooting process.
  • the interworking function-based network device provided by the present invention is as described in the above system.

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

Abstract

Méthode pour implémenter une maintenance d’administration d’exploitation dans un réseau selon laquelle, dans le système réseau interconnectant l'Ethernet et le mode de transfert asynchrone (ATM), lors de la détermination d’une panne de l'Ethernet, on communique le message de panne comprenant les informations sur la panne au système de terminal ATM ; et le système de terminal ATM lance la maintenance d’administration d’exploitation (OAM) en fonction du message de panne reçu du système Ethernet. La méthode et le système selon l’invention assurent que la fonction d’interconnexion OAM peut être réalisée lorsque l'Ethernet est un réseau de transport du service ATM ; lorsque le service ATM est en panne, le réseau ATM de couche supérieure peut déterminer à temps la cause et l’emplacement de la panne du service ATM en fonction du message de panne reçu de la couche de l'Ethernet pour accélérer le processus de dépannage. Le mécanisme OAM est amélioré lorsque l'Ethernet transporte le service ATM. Ceci améliore la capacité d’exploitation et de maintenance du réseau.
PCT/CN2006/002457 2005-10-24 2006-09-20 Méthode, système et dispositif réseau pour implémenter une maintenance d’administration d’exploitation dans un réseau WO2007048307A1 (fr)

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CNB2005101143982A CN100417091C (zh) 2005-10-24 2005-10-24 网络中操作维护的实现方法及系统
CN200510114398.2 2005-10-24

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CN101447975B (zh) * 2007-11-26 2013-12-04 华为技术有限公司 一种处理以太网物理层oam开销的方法及装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1211125A (zh) * 1997-09-11 1999-03-17 三星电子株式会社 异步传输方式中操作、管理和维护的故障管理方法和装置
JP2005244470A (ja) * 2004-02-25 2005-09-08 Hitachi Communication Technologies Ltd 伝送装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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KR100319460B1 (ko) * 2000-02-02 2002-01-05 오길록 에이티엠 및 이더넷 트래픽을 효과적으로 처리할 수 있는고속 에이티엠 셀 스위치 기반의 고성능 스위치드 라우터시스템
US7643424B2 (en) * 2003-03-22 2010-01-05 At&T Intellectual Property L, L.P. Ethernet architecture with data packet encapsulation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1211125A (zh) * 1997-09-11 1999-03-17 三星电子株式会社 异步传输方式中操作、管理和维护的故障管理方法和装置
JP2005244470A (ja) * 2004-02-25 2005-09-08 Hitachi Communication Technologies Ltd 伝送装置

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