WO2016082509A1 - Procédé et appareil permettant de détecter une connectivité d'un trajet commuté par étiquette - Google Patents

Procédé et appareil permettant de détecter une connectivité d'un trajet commuté par étiquette Download PDF

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Publication number
WO2016082509A1
WO2016082509A1 PCT/CN2015/080505 CN2015080505W WO2016082509A1 WO 2016082509 A1 WO2016082509 A1 WO 2016082509A1 CN 2015080505 W CN2015080505 W CN 2015080505W WO 2016082509 A1 WO2016082509 A1 WO 2016082509A1
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WO
WIPO (PCT)
Prior art keywords
service packet
frequency
virtual service
virtual
packet
Prior art date
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PCT/CN2015/080505
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English (en)
Chinese (zh)
Inventor
谢红红
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to KR1020177017701A priority Critical patent/KR20170092602A/ko
Priority to JP2017528411A priority patent/JP6509344B2/ja
Publication of WO2016082509A1 publication Critical patent/WO2016082509A1/fr

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    • 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
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
    • 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]

Definitions

  • This document relates to OAM (Operation Administration and Maintenance) technology in the field of multi-protocol label switching (MPLS), and more particularly to a method and apparatus for detecting connectivity of a label switching path.
  • OAM Operaation Administration and Maintenance
  • the fault of the label switching path is mainly detected by the OAM mechanism.
  • the OAM mechanism needs to send an OAM detection packet on the link to detect the fault of the link, including: sending the OAM detection packet at a source according to a certain period. The monitoring is performed on the sink. If the OAM detection packet is not received within a certain period, the link is considered to be faulty.
  • a certain bandwidth resource is consumed. In particular, if a fast OAM detection packet is transmitted on the link, the bandwidth resource is consumed, which reduces the effective bandwidth of the user to a certain extent.
  • the related art provides a method for detecting label switching path connectivity.
  • the sink label switching router When establishing a label switching path, the sink label switching router binds and saves the ID of the source label switching router to the label switching path; and then according to a predetermined period.
  • a multi-protocol label switching label stack is formed by forming a connectivity detection label and pushing the user data packet. If the relevant packet is not detected within 3 times of the period, it is determined that the label switching path has a problem.
  • the method can detect the label switching path without the OAM detection packet, the binding relationship between the ID of the source label switching router and the label switching path needs to be maintained at the sink end, and the connection is formed according to a predetermined period.
  • Sexually detecting tags and pushing the multi-protocol label switching label stack of user data packets increases the complexity of processing and the bandwidth loss to some extent; and the method does not explicitly describe how to eliminate user packets. Detect label switching path problems.
  • An object of the embodiments of the present invention is to provide a method for detecting connectivity of a label switching path and The device solves the technical problem of how to reduce the loss of the effective bandwidth of the service caused by the insertion of the OAM detection message, so that the effective bandwidth can be maximized.
  • an embodiment of the present invention provides a method for detecting connectivity of a label switching path, which is applied to a source end, and includes:
  • the first virtual service packet is configured to be sent.
  • the service packet is sent.
  • the frequency of the service packet or the first virtual service packet sent by the source end is detected, and the detection result is obtained, and the detection result is compared with the OAM detection frequency to obtain a comparison result, including:
  • the source sends the service packet or the first virtual service packet to the label switching path through the binding relationship between the OAM and the label switching path, and detects the frequency of the service packet or the first virtual service packet, and obtains the detection result. ;
  • the frequency of the detected service packet or the first virtual service packet is compared with the frequency of the OAM detection, and the comparison result is obtained.
  • the second virtual service packet is configured when the comparison result is that the frequency of the service packet or the first virtual service packet is less than the OAM detection frequency, including:
  • the compensation frequency is calculated, and the second virtual service packet is constructed according to the compensation frequency.
  • the embodiment of the present invention further provides a method for detecting connectivity of a label switching path, which is applied to a sink, and includes:
  • the sink receives the service packet sent by the source, the first virtual service packet that is configured when the service packet does not exist, or the second virtual structure that is configured when the frequency of the service packet and the first virtual service packet is less than the OAM detection frequency.
  • the frequency of the received service packet, the first virtual service packet, or the second virtual service packet The rate is tested and the test result is obtained;
  • the sink determines the connectivity of the path according to the detection result, and processes the service packet, the first virtual service packet, or the second virtual service packet.
  • the sink end determines the connectivity of the path according to the detection result, and processes the service packet, the first virtual service packet, or the second virtual service packet, including:
  • the alarm generation indication is output;
  • the frequency of the service packet, the first virtual service packet, or the second virtual service packet received by the sink is greater than or equal to the OAM detection frequency
  • the first virtual service packet or the second virtual service packet is identified.
  • the service packet is delivered to the subsequent service forwarding process. If an alarm is generated, the alarm disappears.
  • the embodiment of the present invention further provides an apparatus for detecting connectivity of a label switching path, which is applied to a source end, and includes:
  • the packet detection module is configured to detect that a service packet exists at the source end.
  • the first virtual service packet is configured to be sent.
  • the service is performed. The message is sent;
  • the first processing module is configured to detect the frequency of the service packet or the first virtual service packet sent by the source end, obtain a detection result, and compare the detection result with the OAM detection frequency to obtain a comparison result;
  • Constructing a module configured to construct a second virtual service message when the comparison result is that the frequency of the service packet or the first virtual service packet is less than the OAM detection frequency;
  • the frequency detection module is configured to send a service packet, a first virtual service packet, or a second virtual service packet to the sink end.
  • the first processing module includes:
  • the detecting unit is configured to send the service packet or the first virtual service packet to the label switching path through the binding relationship preset by the OAM and the label switching path, and detect the frequency of the service packet or the first virtual service packet. Obtaining test results;
  • the comparison unit is configured to compare the frequency of the detected service message or the first virtual service message with the OAM detection frequency to obtain a comparison result.
  • the construction module is set to:
  • the compensation frequency is calculated, and the second virtual service packet is constructed according to the compensation frequency.
  • the embodiment of the present invention further provides an apparatus for detecting connectivity of a label switching path, which is applied to a sink end, and includes:
  • the receiving module is configured to receive the service packet sent by the source, the first virtual service packet configured when the service packet does not exist, or the service packet and the frequency of the first virtual service packet are smaller than the OAM detection frequency.
  • Second virtual service message Second virtual service message
  • the detecting module is configured to detect the frequency of the received service packet, the first virtual service packet, or the second virtual service packet, and obtain a detection result;
  • the second processing module is configured to determine the connectivity of the path according to the detection result, and process the service packet, the first virtual service packet, or the second virtual service packet.
  • the second processing module includes:
  • the first processing unit is configured to output an alarm generation indication when the frequency of the service packet, the first virtual service packet, or the second virtual service packet received by the sink is less than the OAM detection frequency;
  • the second processing unit is configured to: when the frequency of the service packet, the first virtual service packet, or the second virtual service packet received by the sink is greater than or equal to the OAM detection frequency, identify the first virtual service packet or the first The second virtual service packet delivers the service packet to the subsequent service forwarding process. If an alarm is generated, the alarm disappears.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.
  • the beneficial effects of the embodiment of the present invention are: monitoring the transmission status of the service packet or the first virtual service packet according to the OAM detection frequency configured by the user at the source end, and calculating the compensation frequency in time to construct the second virtual service packet according to the compensation frequency.
  • the OAM detection frequency requirement is met, and the connectivity of the service packet, the first virtual service packet, or the second virtual service packet is monitored at the sink according to the OAM detection frequency configured by the user to determine the connectivity of the link.
  • the detection packet effectively solves the loss caused by the insertion of the OAM detection packet to the effective bandwidth of the service, and the standard detected by the method is configured by the user, and does not depend on the service traffic, and has greater flexibility.
  • the standard detected by the method is configured by the user, and does not depend on the service traffic, and has greater flexibility.
  • the first virtual service packet is configured to be sent without the service packet at the source end, so that the purpose of detecting the connectivity of the path is normal when the source end has no service packet.
  • FIG. 1 is a flow chart showing the steps of a method for detecting connectivity of a label switched path applied to a source end according to an embodiment of the present invention
  • FIG. 2 is a flow chart showing the steps of detecting a message frequency and comparing it with an OAM detection frequency in a method for detecting connectivity of a label switching path applied to a source end according to an embodiment of the present invention
  • FIG. 3 is a flow chart showing the steps of a method for detecting connectivity of a label switched path applied to a sink by an embodiment of the present invention
  • FIG. 4 is a flow chart showing the steps of determining the connectivity of a path according to the message frequency and processing the message in the method for detecting the connectivity of the label switched path applied to the sink by the embodiment of the present invention
  • FIG. 5 is a flowchart of a method for detecting connectivity of a label switching path according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a network architecture of a method for detecting connectivity of a label switching path according to an embodiment of the present invention
  • FIG. 7 is a block diagram showing an apparatus for detecting connectivity of a label switching path applied to a source end according to an embodiment of the present invention
  • FIG. 8 is a block diagram showing a first processing module in an apparatus for detecting connectivity of a label switching path applied to a source end according to an embodiment of the present invention
  • FIG. 9 is a block diagram showing an apparatus for detecting connectivity of a label switched path applied to a sink by an embodiment of the present invention.
  • FIG. 10 is a block diagram showing a second processing module in an apparatus for detecting connectivity of a label switched path applied to a sink by an embodiment of the present invention
  • Figure 11 is a block diagram showing the apparatus for detecting the connectivity of a label switched path in accordance with an embodiment of the present invention.
  • the embodiment of the present invention is directed to a method for detecting connectivity of a label switched path in the related art.
  • the problem of the loss of the effective bandwidth of the service, the complexity of the processing, or the inability to detect when there is no service packet provides a method and device for detecting the connectivity of the label switched path, and the detection frequency of the OAM is configured according to the user at the source end.
  • Monitor the transmission of the service packet or the first virtual service packet calculate the compensation frequency in time, construct the second virtual service packet according to the compensation frequency to meet the OAM detection frequency requirement, and monitor the service report according to the OAM detection frequency configured by the user at the sink end.
  • the information of the first virtual service packet or the second virtual service packet is received to determine the connectivity of the link.
  • the OAM detection packet is not required to be sent, which effectively solves the problem that the effective bandwidth of the service is caused by the insertion of the OAM detection packet.
  • the first virtual service packet is configured to be sent without the service packet at the source end, so that the path connectivity is normally detected when the source end has no service packet. .
  • an embodiment of the present invention provides a method for detecting connectivity of a label switching path, which is applied to a source end, and includes:
  • Step S100 Detecting that a service packet exists at the source end.
  • the first virtual service packet is configured to be sent.
  • the service packet is sent.
  • Step S200 Detecting the frequency of the service packet or the first virtual service packet sent by the source end, obtaining the detection result, and comparing the detection result with the OAM detection frequency to obtain a comparison result;
  • Step S300 constructing a second virtual service packet when the frequency of the comparison is that the service packet or the first virtual service packet is less than the OAM detection frequency;
  • Step S400 Send a service packet, a first virtual service packet, or a second virtual service packet to the sink end, where the sink end receives the service packet, the first virtual service packet, or the second virtual service packet.
  • the frequency is detected to determine the connectivity of the path.
  • the first virtual service packet and the second virtual service packet are special user packets sent by the source end, and the packet can reach the sink end through the label switching path, and is used to detect the path at the sink end.
  • the continuity is not delivered to specific users.
  • the first virtual service packet is configured to be sent instead of the service packet.
  • a second virtual service packet is configured, so that the sink can detect the service packet normally.
  • the service packet is monitored by using the OAM detection frequency configured by the user at the source end.
  • the compensation frequency is calculated in accordance with the compensation frequency to construct the second virtual service packet to meet the OAM detection frequency requirement, and the service packet and the first virtual service are monitored at the sink according to the OAM detection frequency configured by the user.
  • the receiving of the packet or the second virtual service packet is used to determine the connectivity of the link.
  • the OAM detection packet is not required to be sent, which effectively solves the loss caused by the insertion of the OAM detection packet to the effective bandwidth of the service.
  • step S200 includes:
  • Step S201 The source end sends a service packet or a first virtual service packet to the label switching path through the binding relationship between the OAM and the label switching path, and detects the frequency of the service packet or the first virtual service packet. Obtaining test results;
  • Step S202 Compare the frequency of the detected service packet or the first virtual service packet with the OAM detection frequency to obtain a comparison result.
  • the frequency (or period) of the OAM detection is the unique identifier of the OAM, and the binding relationship between the OAM and the label switching path is configured in advance, and the configuration information is saved.
  • the OAM when the source sends the service packet or the first virtual service packet, the OAM sends the service packet or the first virtual service packet to the label switching path through the binding relationship preset by the OAM and the label switching path.
  • the frequency of the service packet or the first virtual service packet is detected, and the detection result is obtained; and the comparison result is compared with the OAM detection frequency, and the comparison result is obtained.
  • step S300 includes:
  • the compensation frequency is calculated, and the second virtual service packet is constructed according to the compensation frequency.
  • the service packet or the first virtual service packet sent by the source is smaller than the OAM detection frequency
  • the service packet or the first virtual service packet needs to be calculated.
  • the compensation frequency between the frequency and the OAM detection frequency constructs a second virtual service message according to the compensation frequency.
  • first virtual service packet or the second virtual service packet may be transmitted along the label switching path, but the first virtual service packet or the second virtual service packet is used.
  • the encapsulated label is different from the label used by the service packet.
  • the other encapsulation information is the same as the service packet.
  • the embodiment of the invention further provides a method for detecting connectivity of a label switching path, which is applied to a sink.
  • the end as shown in Figure 3, includes:
  • Step S500 The sink receives the service packet sent by the source end, and the first virtual service packet configured when the service packet does not exist or when the frequency of the service packet and the first virtual service packet is less than the OAM detection frequency.
  • Second virtual service message Second virtual service message
  • Step S600 The sink detects the frequency of the received service packet, the first virtual service packet, or the second virtual service packet, and obtains a detection result.
  • Step S700 The sink end determines the connectivity of the path according to the detection result, and processes the service packet, the first virtual service packet, or the second virtual service packet.
  • the sink detects the frequency of the received service packet, the first virtual service packet, or the second virtual service packet, and compares the set OAM detection frequency with the detected result to determine the path connectivity. Sex. After the connectivity of the path is determined, the received service packet, the first virtual service packet, or the second virtual service packet is processed.
  • step S700 includes:
  • Step S701 When the frequency of the service packet, the first virtual service packet, or the second virtual service packet received by the sink is less than the OAM detection frequency, output an alarm generation indication.
  • Step S702 When the frequency of the service packet, the first virtual service packet, or the second virtual service packet received by the sink is greater than or equal to the OAM detection frequency, the first virtual service packet or the second virtual service packet is identified.
  • the service delivers the service message to the subsequent service forwarding process. If an alarm is generated, the alarm disappears.
  • the connectivity of the path is damaged.
  • An indication is generated, and the alarm generation indication is processed; when the frequency of the service packet, the first virtual service packet, or the second virtual service packet received by the sink is greater than or equal to the OAM detection frequency, the connectivity of the path is indicated. If the service packet, the first virtual service packet, or the second virtual service packet is identified, the first virtual service packet or the second virtual service packet is not delivered to the subsequent service forwarding processing. The process delivers the identified service message to a subsequent service forwarding process.
  • an alarm disappearing indication is output, and the alarm disappearing indication is processed.
  • the processing of the alarm disappearing indication includes: updating the status of the local end, and when needed, is responsible for notifying the source end of the alarm status.
  • Handling alarm production The raw indication includes: updating the status of the local end, and when needed, is responsible for notifying the source end of the alarm status.
  • the source end and the sink end are connected by an intermediate node, and the service packet, the first virtual service packet, or the second virtual service packet sent by the source end is sent.
  • the sink detects the frequency of the service packet, the first virtual service packet, or the second virtual service packet to determine the connectivity of the path.
  • the method does not need to send an OAM detection packet, which effectively solves the loss caused by the insertion of the OAM detection packet to the effective bandwidth of the service.
  • the embodiment of the present invention further provides an apparatus for detecting connectivity of a label switching path, which is applied to a source end. As shown in FIG. 7, the apparatus includes:
  • the packet detection module 10 is configured to detect that a service packet exists at the source end. When the source end does not have a service packet, the first virtual service packet is configured to be sent. When the source end has a service packet, the packet detection module 10 Service packets are sent;
  • the first processing module 20 is configured to detect the frequency of the service packet or the first virtual service packet sent by the source end, obtain a detection result, and compare the detection result with the OAM detection frequency to obtain a comparison result;
  • the constructing module 30 is configured to construct a second virtual service message when the comparison result is that the frequency of the service packet or the first virtual service packet is less than the OAM detection frequency;
  • the frequency detecting module 40 is configured to send a service packet, a first virtual service packet, or a second virtual service packet to the sink end, where the sink end receives the service packet, the first virtual service packet, or the second virtual
  • the frequency of service packets is detected to determine the connectivity of the path.
  • the first processing module 20 includes:
  • the detecting unit 21 is configured to send a service packet or a first virtual service packet to the label switching path by using a binding relationship preset between the OAM and the label switching path, and detect the frequency of the service packet or the first virtual service packet. , get the test results;
  • the comparison unit 22 is configured to compare the frequency of the detected service message or the first virtual service message with the OAM detection frequency to obtain a comparison result.
  • the construction module 30 is configured to:
  • the compensation frequency is calculated, and the second virtual service packet is constructed according to the compensation frequency.
  • An embodiment of the present invention further provides an apparatus for detecting connectivity of a label switching path, which is applied to a sink.
  • the device includes:
  • the receiving module 50 is configured to receive a service packet sent by the source, a first virtual service packet configured when the service packet does not exist, or a structure when the frequency of the service packet and the first virtual service packet is less than the OAM detection frequency. Second virtual service message;
  • the detecting module 60 is configured to detect the frequency of the received service packet, the first virtual service packet, or the second virtual service packet, to obtain a detection result;
  • the second processing module 70 is configured to determine the connectivity of the path according to the detection result and process the service packet, the first virtual service packet, or the second virtual service packet.
  • the second processing module 70 includes:
  • the first processing unit 71 is configured to output an alarm generation indication when the frequency of the service packet, the first virtual service packet, or the second virtual service packet received by the sink is less than the OAM detection frequency;
  • the second processing unit 72 is configured to: when the frequency of the service packet, the first virtual service packet, or the second virtual service packet received by the sink is greater than or equal to the OAM detection frequency, identify the first virtual service packet or The second virtual service packet delivers the service packet to the subsequent service forwarding process. If an alarm is generated, the alarm disappears.
  • FIG. 11 it is a block diagram of a device for detecting connectivity of a label switching path according to an embodiment of the present invention.
  • the packet detecting module 10 detects whether a service packet exists at the source end, and determines whether to send a service packet or a first virtual service packet. Text.
  • the first processing module 20 detects the frequency of the service packet or the first virtual service packet, obtains the detection result, and compares the detection result with the OAM detection frequency to obtain a comparison result; when the service packet or the first
  • the second virtual service packet is configured by the constructing module 30 when the frequency of the virtual service packet is less than the OAM detection frequency, and finally the service packet, the first virtual service packet, or the second virtual service packet is sent to the sink by the frequency detecting module 40.
  • the connectivity of the service packet, the first virtual service packet, or the second virtual service packet is determined by the sink to determine the connectivity of the path.
  • the receiving module 50 which is applied to the sink, first receives the service packet, the first virtual service packet, or the second virtual service packet sent by the source end, and the detection module 60 sends the service packet, the first virtual service packet, or the second virtual
  • the frequency of the service packet is detected, and after the detection, the second processing module 70 processes the service packet, the first virtual service packet, or the second virtual service packet.
  • the method for detecting the connectivity of the label switching path in the embodiment of the present invention is to monitor the transmission status of the service packet or the first virtual service packet according to the OAM detection frequency configured by the user at the source end.
  • the compensation frequency is configured according to the compensation frequency to construct the second virtual service packet to meet the OAM detection frequency requirement, and the sink receives the service packet, the first virtual service packet, or the second virtual service packet according to the OAM detection frequency configured by the user.
  • the connectivity of the link is determined, and the OAM detection packet is not required to be sent, which effectively solves the loss caused by the insertion of the OAM detection packet to the effective bandwidth of the service, and the standard detected by the method is configured by the user, and is not dependent. For business traffic, there is greater flexibility.
  • the first virtual service packet is configured to be sent without the service packet at the source end, and the connectivity of the path is normally detected.
  • the apparatus for detecting the connectivity of the label switching path provided by the embodiment of the present invention is the apparatus applying the foregoing method, and all the embodiments of the foregoing method are applicable to the apparatus, and all of the same or similar beneficial effects can be achieved.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the foregoing technical solution does not need to send an OAM detection packet, which effectively solves the loss caused by the insertion of the OAM detection packet to the effective bandwidth of the service, and the standard detected by the method is configured by the user, and does not depend on the service traffic, and has a large Flexibility.
  • the foregoing technical solution is configured to send the first virtual service packet without the service packet at the source end, so as to achieve the purpose of detecting the connectivity of the path normally when there is no service packet at the source end.

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Abstract

L'invention concerne un procédé et un appareil permettant de détecter la connectivité d'un trajet commuté par étiquette. Le procédé, appliqué à une extrémité de source, comprend les étapes consistant à: envoyer un paquet de service ou un premier paquet de service virtuel depuis une extrémité de source, détecter la fréquence du paquet de service ou du premier paquet de service virtuel, comparer le résultat de détection à une fréquence de détection d'OAM, et construire un second paquet de service virtuel lorsque le résultat obtenu par la comparaison indique que la fréquence du paquet de service ou du premier paquet de service virtuel est inférieure à la fréquence de détection d'OAM; et envoyer le paquet de service, le premier paquet de service virtuel ou le second paquet de service virtuel à une extrémité réceptrice, et détecter la fréquence du paquet de service reçu, du premier paquet de service virtuel reçu ou du second paquet de service virtuel reçu par l'extrémité réceptrice, de manière à déterminer la connectivité d'un trajet. Dans le schéma technique, la connectivité du trajet est déterminée en détectant le paquet de service, le premier paquet de service virtuel ou le second paquet de service virtuel, et la perte de la largeur de bande efficace d'un service en raison de l'insertion d'un paquet de détection d'OAM est réduite et, en conséquence, l'utilisation de la largeur de bande efficace est maximisée.
PCT/CN2015/080505 2014-11-27 2015-06-01 Procédé et appareil permettant de détecter une connectivité d'un trajet commuté par étiquette WO2016082509A1 (fr)

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KR1020177017701A KR20170092602A (ko) 2014-11-27 2015-06-01 태그 교환 경로 연결성의 검출방법 및 장치
JP2017528411A JP6509344B2 (ja) 2014-11-27 2015-06-01 タグ交換パス接続性の検出方法及び装置

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CN201410707412.9A CN105703967B (zh) 2014-11-27 2014-11-27 一种检测标签交换路径连通性的方法及装置
CN201410707412.9 2014-11-27

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CN113162695A (zh) * 2021-04-19 2021-07-23 烽火通信科技股份有限公司 一种光层oam信息的传送方法和传送系统

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