WO2009074090A1 - Procédé et appareil de détection de liaison - Google Patents

Procédé et appareil de détection de liaison Download PDF

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Publication number
WO2009074090A1
WO2009074090A1 PCT/CN2008/073281 CN2008073281W WO2009074090A1 WO 2009074090 A1 WO2009074090 A1 WO 2009074090A1 CN 2008073281 W CN2008073281 W CN 2008073281W WO 2009074090 A1 WO2009074090 A1 WO 2009074090A1
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WO
WIPO (PCT)
Prior art keywords
loopback
cell
request
identification information
unit
Prior art date
Application number
PCT/CN2008/073281
Other languages
English (en)
Chinese (zh)
Inventor
Yuanchun Wu
Yong Yang
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 WO2009074090A1 publication Critical patent/WO2009074090A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems

Definitions

  • the present invention relates to the field of network communications, and in particular, to a method and apparatus for detecting a link.
  • ATM Advanced Technology Attachment
  • the prior art provides a method for detecting a link, which sends a "request loopback" Loopback cell by using the Loo pback function at the origin of the ATM link; the response end of the ATM link receives the "" Request loopback to the Loopback cell and send a Loopback cell with "Response Loopback”; the initiator of the ATM link determines whether it receives the Loopback cell with "Response Loopback” within 5s; if it is received within 5s The link is normal; otherwise the link fails and the alarm is reported by the initiator of the ATM link.
  • embodiments of the present invention provide a method and apparatus for detecting a link, which can be accurately detected in the case of multiple physical loopbacks or abnormal loopbacks. The actual situation of the ATM link.
  • a specific embodiment of the present invention provides a method for detecting a link, where the method includes:
  • the link is confirmed to be normal. If the loopback cell that responds to the loopback is not received within the set time, the alarm is reported. .
  • a specific embodiment of the present invention further provides an apparatus for detecting a link, where the apparatus includes:
  • Transmitting unit a loopback cell for transmitting a request loopback with identification information
  • Receiving a request loopback unit for receiving a loopback cell requesting a loopback
  • a judging unit determining whether the loopback cell of the request loopback received by the receiving request loopback unit is the same as the loopback cell of the request loopback with the identification information sent by the sending unit;
  • the acknowledgment unit is configured to: when the judging unit judges that the same condition is obtained, and if the loopback cell that responds to the loopback is received in the setting period, confirm that the link is normal;
  • the alarm unit is configured to report an alarm when the loopback cell that responds to the loopback is not received within the set time when the determining unit determines the same.
  • the technical solution of the embodiment of the present invention inserts the identification information into the loopback cell that requests the loopback, and uses the identification information to determine whether the loop for requesting loopback is sent by the local end.
  • the return element is used to detect the actual situation of the ATM link.
  • FIG. 1 is a schematic diagram of a prior art ATM link in the case of multiple physical loopbacks or abnormal loopbacks. Inter-network situation.
  • FIG. 2 is a flow chart of a method of detecting a link according to Embodiment 1 of the present invention.
  • FIG. 3 is a structural diagram of an apparatus for detecting a link according to an embodiment of the present invention.
  • Embodiments of the present invention provide a method of detecting a link.
  • the method includes: first sending a loopback cell with a request loopback of the identification information; and after receiving the loopback cell requesting the loopback, determining the loopback cell that receives the request loopback and the strap Whether the loopback cells of the request loopback with the identification information are the same; if the loopback cell that responds to the loopback is received within the set time, it is confirmed that the link is normal, such as If the loopback cell that responded to the loopback is not received within the fixed time, the police will be reported. In the above method, if it is determined that the loopback cell that receives the request loopback is different from the loopback cell of the request loopback with the identification information, the loopback cell that responds to the loopback is sent. The above method can be completed by the originating end or the responding end of the ATM link.
  • the specific operation of the loopback cell that sends the request loopback with the identification information in the above method may be: first, the optional field of the loopback cell requesting the loopback "Source"
  • Section 7.2.4 has a detailed description, which is not mentioned here.
  • the above identification information may preferably be a value of a local hardware controller, or may select other identification information that can distinguish between an ATM initiator and an ATM response terminal.
  • the specific embodiment of the present invention does not limit the form of the identification information.
  • the above method can also perform the following operations to check whether the alarm has been reported. If the alarm is reported, the reported alarm is restored. Report the alarm and end the operation. This operation can also be performed by the originating end or the responding end of the ATM link, and only needs to be the same as the operating body of the above method.
  • the specific method for determining whether the loopback cell that receives the request loopback is the same as the loopback cell of the request loopback with the identification information in the foregoing method may be: first, determining the received request ring. Whether the loopback cell has the identification information, and after the identification information is the same as the identification information in the loopback cell with the request loopback with the identification information, the loopback of the received request is determined. The loopback cell is the same as the loopback cell of the request loopback with the identification information; If there is identification information or identification information but the identification information is different from the identification information in the loop back cell of the request loopback with the identification information, it is determined that the information is different.
  • a specific embodiment of the present invention provides an embodiment.
  • the embodiment provides a method for detecting a link.
  • the technical scenario in this embodiment is that the operation body of the embodiment is an initiator of the ATM, and the identification information is local.
  • the value of the hardware constantizer, the value of the local hardware constantizer is inserted in the optional field "Source ID" of the loopback cell requesting the loopback.
  • This embodiment includes the following operations:
  • Step 21 The sender of the originating end sends a loopback cell with a request loopback value of the value of the hardware fixer.
  • Step 22 The receiving end of the originating end receives the loopback cell requesting the loopback;
  • Step 23 The initiator judges whether the loopback cell that receives the request loopback is the same as the loopback cell that sends the request loopback with the value of the hardware timer;
  • the initiator may determine whether the loopback cell that receives the request loopback is the same as the loopback cell that sends the request loopback with the value of the hardware timer. The initiator may determine the receipt. Whether the loopback cell requesting the loopback has a value of the hardware determinator, the loopback having the value of the hardware determinator and the value of the hardware splicer and the request loopback with the value of the hardware determinator After the value of the hardware determinator in the cell is the same, it is determined that the loopback cell that receives the request loopback is the same as the loopback cell of the request loopback with the value of the hardware determinator; If the value of the hardware timer or the value of the hardware controller is different from the identification information in the loopback cell of the request loopback with the identification information, it is determined that the value is not the same as the value of the hardware controller the same.
  • Step 24 the initiator determines whether the loopback cell that receives the loopback is received within the set time; if it is received within the set time, proceed to step 25, otherwise proceed to step 26;
  • the setting in this step is preferred for 5s. Of course, other situations can be selected in the actual situation. This embodiment does not limit the specific setting of the setting.
  • Step 25 The initiator confirms that the link is normal.
  • Step 26 Report the police on the originating side.
  • Step 27 The initiator sends a loopback cell that responds to the loopback; after completing step 27, the initiator returns to step 24.
  • the above method may further include the following operations:
  • Step 28 the sender checks whether an alarm has been sent; in the case of detecting that the alarm has been sent, proceed to step 29, otherwise proceed to step 30;
  • Step 29 The sender resumes the alarm.
  • Step 30 End the operation.
  • Steps 28 to 30 in Embodiment 1 are optional operations.
  • the method provided by the embodiment of the present invention inserts the identification information into the loopback cell of the request loopback, and uses the identification information to determine whether the loopback cell of the request loopback sent by the local end is detected, thereby detecting the ATM. The actual situation of the link.
  • An embodiment of the present invention further provides an apparatus for detecting a link.
  • the apparatus includes a transmitting unit 31: a loopback cell for transmitting a request loopback with identification information; and a receiving unit 32.
  • the loopback cell is configured to receive the loopback request.
  • the determining unit 33 is configured to: after receiving the loopback cell that requests the loopback, the determining unit receives the loopback cell and the loopback requesting the loopback Whether the loopback cells of the request loopback with the identification information sent by the sending unit are the same; the confirming unit 34: configured to receive the same in the case that the determining unit 33 determines the same In response to the loopback cell of the loopback, the link is confirmed to be normal; and the alarm unit 35 is configured to: in the case where the determining unit 43 determines the same, the loopback message is not received in the set day. In the case of Yuan, the police are reported.
  • the device for detecting a link may be an initiator end or a response end of an ATM link.
  • the sending unit 31 may include: an inserting module 311: an optional field or an unused field for inserting the identification information into the loopback cell of the request loopback; the sending module 312, configured to identify in the inserting module 311 After the information is inserted into the loopback cell of the request loopback, the loopback cell that requests the loopback is sent.
  • an inserting module 311 an optional field or an unused field for inserting the identification information into the loopback cell of the request loopback
  • the sending module 312 configured to identify in the inserting module 311 After the information is inserted into the loopback cell of the request loopback, the loopback cell that requests the loopback is sent.
  • the identification information has been described in detail in the method embodiment of the specific embodiment of the present invention, and is not mentioned here.
  • the determining unit 33 includes: a detecting module 331, configured to detect whether the loopback cell that receives the request loopback is
  • the identification module 332 is configured to: when detecting the loopback cell that receives the request loopback, with the identification information, and the loopback cell that receives the request loopback carries the identification information and the The identification information in the loopback cell of the request loopback of the identification information is the same, and the same is determined, otherwise the judgment is different.
  • the above apparatus may further include: an checking unit 36: configured to check whether an alarm has been reported after the confirming unit 34 confirms that the link is normal; and recover the alarm unit 37: used in the checking unit 36 If it is checked that the alarm has been reported, the reported alarm is resumed.
  • the device inserts the identification information into the loopback cell requesting the loopback, and uses the identification information to determine whether the loopback cell requesting the loopback is sent by the local end, thereby Detect AT
  • the technical solution provided by the specific embodiments of the present invention has the advantage of detecting the actual situation of the ATM link.

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

Abstract

Procédé et appareil de détection de liaison, en rapport avec le domaine des communications en réseau. Le procédé comporte les étapes consistant à : envoyer une cellule de bouclage demandant un bouclage et comportant des informations d'identification ; après réception d'une cellule de bouclage demandant le bouclage, déterminer si la cellule de bouclage reçue demandant le bouclage est identique à la cellule de bouclage demandant le bouclage et comportant les informations d'identification ; dans l'affirmative, affirmer que la liaison est normale dans le cas où la cellule de bouclage en réponse est reçue dans le délai spécifié et rendre compte d'une alarme si la cellule de bouclage en réponse n'est pas reçue dans le délai spécifié. Le procédé et l'appareil sont en mesure de détecter la situation effective exacte de la liaison ATM selon le cas qui se présente : bouclage physique effectué à plusieurs reprises ou bouclage anormal.
PCT/CN2008/073281 2007-12-12 2008-12-01 Procédé et appareil de détection de liaison WO2009074090A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007101793871A CN101202677B (zh) 2007-12-12 2007-12-12 检测链路的方法及装置
CN200710179387.1 2007-12-12

Publications (1)

Publication Number Publication Date
WO2009074090A1 true WO2009074090A1 (fr) 2009-06-18

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WO (1) WO2009074090A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101202677B (zh) * 2007-12-12 2010-11-03 华为技术有限公司 检测链路的方法及装置
CN101511100B (zh) * 2009-01-16 2012-07-04 华为技术有限公司 一种链路检测的方法、装置和***
CN102223238B (zh) * 2010-04-16 2013-11-06 鸿富锦精密工业（深圳）有限公司 交换设备及其环回侦测方法
CN105871569B (zh) * 2015-01-19 2020-08-04 中兴通讯股份有限公司 Otn 网络故障节点自动检测的方法及装置
CN109104338B (zh) * 2018-11-12 2020-10-16 北京天融信网络安全技术有限公司 链路智能探测方法、存储介质及计算机设备

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH114231A (ja) * 1997-06-11 1999-01-06 Nec Corp ループバックセル制御方式及び装置
US6545979B1 (en) * 1998-11-27 2003-04-08 Alcatel Canada Inc. Round trip delay measurement
CN1691609A (zh) * 2004-04-20 2005-11-02 北京润光泰力科技发展有限公司 一种以太网转换器线路侧环回检测的方法和装置
CN1866849A (zh) * 2005-05-16 2006-11-22 华为技术有限公司 一种检测以太网用户线状态的方法
CN101202677A (zh) * 2007-12-12 2008-06-18 华为技术有限公司 检测链路的方法及装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH114231A (ja) * 1997-06-11 1999-01-06 Nec Corp ループバックセル制御方式及び装置
US6545979B1 (en) * 1998-11-27 2003-04-08 Alcatel Canada Inc. Round trip delay measurement
CN1691609A (zh) * 2004-04-20 2005-11-02 北京润光泰力科技发展有限公司 一种以太网转换器线路侧环回检测的方法和装置
CN1866849A (zh) * 2005-05-16 2006-11-22 华为技术有限公司 一种检测以太网用户线状态的方法
CN101202677A (zh) * 2007-12-12 2008-06-18 华为技术有限公司 检测链路的方法及装置

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CN101202677B (zh) 2010-11-03

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