WO2012106914A1 - Procédé de diagnostic de défaillance de tunnel dynamique, dispositif et système - Google Patents

Procédé de diagnostic de défaillance de tunnel dynamique, dispositif et système Download PDF

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Publication number
WO2012106914A1
WO2012106914A1 PCT/CN2011/077469 CN2011077469W WO2012106914A1 WO 2012106914 A1 WO2012106914 A1 WO 2012106914A1 CN 2011077469 W CN2011077469 W CN 2011077469W WO 2012106914 A1 WO2012106914 A1 WO 2012106914A1
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WIPO (PCT)
Prior art keywords
dynamic tunnel
tunnel
dynamic
routing information
interface
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PCT/CN2011/077469
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English (en)
Chinese (zh)
Inventor
刘德安
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201180001572.6A priority Critical patent/CN102308524B/zh
Priority to PCT/CN2011/077469 priority patent/WO2012106914A1/fr
Publication of WO2012106914A1 publication Critical patent/WO2012106914A1/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
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0677—Localisation of faults
    • 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
    • H04L41/069—Management of faults, events, alarms or notifications using logs of notifications; Post-processing of notifications

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a dynamic tunnel fault diagnosis method, device and system.
  • a static tunnel (Tunnel) or a dynamic tunnel is usually used in a bearer network to complete service transmission.
  • VPN Virtual Private Network Tunnel is generally referred to as a VPN node (generally referred to as a Provider Edge) of a packet switched network (PSN) backbone network, or between a VPN node and a user.
  • PSN packet switched network
  • Tunnel is an indispensable part of building a VPN, which is used to transparently transfer VPN packets from one VPN node to another.
  • Dynamic tunnels use the routing protocol negotiation mode to establish data forwarding routes. For example, if there is a dynamic tunnel between the source and sink NEs, the routing information of the dynamic tunnel is determined before the fault occurs. The signaling negotiation may fail after the fault occurs. For example, when an intermediate node or intermediate link fails, you need to check the possible paths (often many) to find the fault point. If the network topology is complex, the troubleshooting usually takes a very long time. The fault is also very difficult, and in the prior art, it is generally manually checked by a technician, and it is difficult to troubleshoot in time and effectively.
  • the embodiments of the present invention provide a dynamic tunnel fault diagnosis method, a device, and a system, so as to reduce the complexity of troubleshooting a dynamic tunnel and improve the efficiency of troubleshooting dynamic tunnels.
  • a dynamic tunnel fault diagnosis method includes:
  • the NMS saves the routing information of the dynamic tunnel.
  • the latest routing information corresponding to the dynamic tunnel saved before the dynamic tunnel failure is queried; Parsing the interface and the network element through which the dynamic tunnel passes according to the latest routing information of the dynamic tunnel obtained by the query;
  • a network management device including:
  • a memory configured to save routing information of the dynamic tunnel
  • a querying module configured to query, after the dynamic tunnel fault is found, the latest routing information of the corresponding dynamic tunnel saved by the memory before the dynamic tunnel is faulty;
  • a route parsing module configured to parse out an interface and a network element that the dynamic tunnel passes through according to the latest routing information of the dynamic tunnel that is obtained by the query module;
  • the diagnosis module is configured to check an interface and a network element that the dynamic tunnel passes through to learn a suspected fault point in the dynamic tunnel.
  • a fault diagnosis system comprising:
  • the network management device as described in the above embodiments.
  • the network management system saves the routing information of the dynamic tunnel tunnel; in this case, when the dynamic tunnel is faulty, the network management system can query the latest routing information corresponding to the dynamic tunnel saved before the dynamic tunnel failure; Obtaining the latest routing information of the dynamic tunnel to parse the interface and the network element through which the dynamic tunnel passes; and then checking the interface and the network element that the dynamic tunnel passes through to obtain the suspected fault point in the dynamic tunnel, so that Troubleshoot the dynamic tunnels automatically, which can reduce the complexity of troubleshooting dynamic tunnels and improve the troubleshooting efficiency of dynamic tunnels.
  • FIG. 1 is a schematic diagram of a dynamic tunnel fault according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of a cloud network after a dynamic tunnel failure according to an embodiment of the present invention
  • 2 is a schematic flowchart of a dynamic tunnel fault diagnosis method according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a module structure of a network management system according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a network management device according to an embodiment of the present invention.
  • FIG. 5-a is a schematic diagram of a diagnostic module of a network management device according to an embodiment of the present invention
  • FIG. 5-b is a schematic diagram of a diagnostic module of another network management device according to an embodiment of the present invention
  • FIG. 5-c is a schematic diagram of the present invention
  • the embodiment provides a schematic diagram of a diagnostic module of another network management device.
  • the embodiments of the present invention provide a dynamic tunnel fault diagnosis method, a device, and a system, which are used to reduce the complexity of troubleshooting dynamic tunnel faults and improve the efficiency of troubleshooting dynamic tunnels.
  • An embodiment of the dynamic tunnel fault diagnosis method of the present invention may include: the network management saves the dynamic tunnel
  • the latest routing information of the dynamic tunnel that was saved before the dynamic tunnel is faulty is queried.
  • the dynamic routing information is parsed according to the latest routing information of the dynamic tunnel.
  • the network management saves routing information of the dynamic tunnel.
  • the network administrator can save part or all of the routing information corresponding to the dynamic tunnel to the database, for example.
  • the network management can be, for example, Keep or delete the historical routing information of the dynamic tunnel that the database has previously saved.
  • the NMS sends a notification that the dynamic tunnel is in the Up state for the first time.
  • the first node of the dynamic tunnel can send a notification to the NMS indicating that the dynamic tunnel becomes
  • the routing information of the dynamic tunnel can be saved. For example, when the user queries the current routing information of the dynamic tunnel, if the current routing information of the dynamic tunnel is different from the saved routing information corresponding to the dynamic tunnel, and the routing information storage instruction of the user is received, the network management The current routing information of the dynamic tunnel can be saved.
  • the network management can also automatically Save the current routing information of the dynamic tunnel. For example, after receiving the route change notification corresponding to the dynamic tunnel, the network management system can save the routing information of the dynamic tunnel change carried in the route change notification after receiving the routing information storage instruction of the user (of course, After receiving the route change notification corresponding to the dynamic tunnel, the NMS can also automatically save the routing information after the dynamic tunnel change carried in the route change notification. For example, the network management system can automatically save the routing information after the dynamic tunnel change under the instruction of the user instruction when the routing information of the dynamic tunnel is changed.
  • the network management system may establish a first thread and a second thread; after receiving the route change notification corresponding to the dynamic tunnel, the first thread queries the cache whether there is a route change notification corresponding to the dynamic tunnel, and if not, The route change notification corresponding to the dynamic tunnel is stored in the cache; if yes, after the existing route change notification corresponding to the dynamic tunnel is deleted in the cache, the route change corresponding to the dynamic tunnel is received.
  • the notification is stored in the cache, where the route change notification carries the routing information after the dynamic tunnel change; the second thread reads the route change notification corresponding to the dynamic tunnel from the cache, and carries the read route change notification
  • the routing information after the dynamic tunnel change is stored in the database. In this way, the processing of the route change notification of the dynamic thread by the first thread and the second thread forms a survivor consumer working mode, and only the last change event is cached in the cache, which is beneficial to reducing the number of times of storing the library.
  • the NMS finds that the dynamic tunnel is faulty, the NMS queries the latest routing information of the dynamic tunnel that is saved before the dynamic tunnel is faulty.
  • the network management system can detect that the dynamic tunnel is faulty, or determine that the dynamic tunnel is faulty according to the related fault report reported by the managed network element.
  • the network management device parses the interface and the network element that the dynamic tunnel passes through according to the latest routing information of the dynamic tunnel obtained by the query.
  • the network management system checks the interface and the network element that the dynamic tunnel passes through to learn the suspected fault point in the dynamic tunnel.
  • the NMS can check the interfaces and NEs that the dynamic tunnel passes through in various ways to learn the suspected fault points in the dynamic tunnel.
  • the network administrator can generate a test command set (eg, can generate a test command corresponding to a ping and/or a Trace Route per hop from the source node of the dynamic tunnel to the destination node); test the dynamic with the generated test command set
  • the interface and network element that the tunnel passes through to learn the suspected fault point of the dynamic tunnel.
  • the network management system can query all the alarms on the route that the dynamic tunnel passes and all the alarms on the dynamic tunnel according to the interface and the network element that the dynamic tunnel passes through; and the query is based on the preset deduction rules. Correlation analysis is performed on all the alarms to obtain a root cause alarm.
  • the derivation rule may include at least one of the following rules:
  • the upstream alarm is a root cause alarm of the downstream alarm
  • the interface alarm is a root cause alarm of the dynamic tunnel alarm.
  • the physical interface alarm is the root cause alarm of the logical interface alarm that is bound to it.
  • the network management system can check the correctness of the configuration data of the interface and the network element that the dynamic tunnel passes through (for example, may include one or more of the following information: check the laser status, the interface enable status, and whether the upstream and downstream IP addresses are On the same network segment, whether the routing constraint information matches the actual routing information, whether the tunnel on each routing node is successfully established, etc.); the suspected fault point in the dynamic tunnel is determined according to the detection result. It can be understood that the network management system can be used to check the interface and the network element that the dynamic tunnel passes through to learn the suspected fault point in the dynamic tunnel, and is not limited to the above example manner.
  • the user can further confirm and troubleshoot the fault problem of the suspected fault point.
  • the network management system in the embodiment of the present invention may be a physical device or may include a network management system composed of multiple physical devices.
  • the network management saves the routing information of the dynamic tunnel tunnel;
  • the NMS can query the latest routing information of the dynamic tunnel that was saved before the dynamic tunnel is faulty.
  • the interface and the NE that the dynamic tunnel passes through are parsed according to the latest routing information of the dynamic tunnel.
  • the interface and the network element that the dynamic tunnel passes through can be checked to obtain the suspected fault point in the dynamic tunnel, so that the fault diagnosis of the dynamic tunnel can be automatically implemented, thereby reducing the complexity of troubleshooting the dynamic tunnel fault.
  • Improve the efficiency of troubleshooting dynamic tunnels For a better understanding of the technical solution of the embodiment of the present invention, an example of the network management module architecture is taken as an example for further detailed introduction.
  • a dynamic tunnel routing processing module may be added to the network management system to support querying the current routing information of the dynamic tunnel, and storing and querying historical routing information of the dynamic tunnel.
  • the alarm processing module interacts with the dynamic tunnel routing processing module to analyze the dynamic routing information of the dynamic tunnel, and obtain the alarm information of the network element and the interface, the network element and the interface, and the dynamic tunnel of the dynamic tunnel. And all the alarms are analyzed based on the preset deduction rules to obtain a root cause alarm, wherein the derivation rule may include at least one of the following rules:
  • the upstream alarm is downstream
  • the root cause alarm of the alarm is the root cause alarm of the dynamic tunnel alarm
  • the physical interface alarm is the root cause alarm of the logical interface alarm bound to it.
  • the network management system can check the correctness of the configuration data of the interface and the network element that the dynamic tunnel passes through; and determine the suspected fault point in the dynamic tunnel according to the detection result.
  • the fault diagnosis module can interact with the dynamic tunnel routing processing module.
  • the fault diagnosis module can automatically generate a test command set, and can use the generated test command set to perform link-pass test such as Ping/Trace Route to automatically analyze the suspected fault point.
  • the dynamic tunnel routing processing module can provide one or more of the following functions, for example:
  • the historical routing information of the dynamic tunnel is saved and the query interface is provided.
  • the alarm processing module may add one or more of the following functions: According to the routing information obtained by the dynamic tunnel routing processing module, all alarms on the tunnel route are queried from the database and the dynamic tunnel is All alarms;
  • the alarm correlation rule analysis is performed, and the root cause alarm is analyzed.
  • the fault diagnosis module may add one or more of the following functions: automatically generate a test command set according to the dynamic tunnel routing information obtained by the dynamic tunnel routing processing module, and may utilize the generated test command set. Perform link continuity test such as Ping/Trace Route; analyze test results based on the upstream and downstream relationship of the route to automatically analyze the suspected fault point.
  • a flag may be added to the dynamic tunnel state data to mark whether the dynamic tunnel is in the UP state for the first time.
  • the dynamic tunnel routing processing module receives the notification that the dynamic tunnel reported by the managed network element changes to the UP state, the dynamic If the tunnel routing processing module determines that it is UP for the first time, it saves the current routing information to the database (or the repository file).
  • the dynamic tunnel routing processing module may generate a prompt message to remind the user to save the new routing information.
  • the instruction for saving the route the dynamic tunnel routing processing module saves the new routing information of the dynamic tunnel to the database. If the current routing information of the dynamic tunnel is different from the saved historical routing information, the dynamic tunnel routing processing module can automatically save the new routing information of the dynamic tunnel to the database.
  • the dynamic tunnel routing processing module may generate a prompt message to remind the user to save the new routing information, and if the user selects to save the route, The command, dynamic tunnel routing processing module saves the new route to the database. In this way, for the same dynamic tunnel, only one route change notification is recorded, and the route change notification is cached in the memory, until the route change notification is confirmed by the user to change the new route change notification of the tunnel, so that the network is in the managed network.
  • the network management implements the merging of multiple change events of the same tunnel, which is beneficial to effectively reduce the network management.
  • the tunnel routing information storage operation can be performed only when the tunnel is UP for the first time, or when the route is updated when the user selects, thereby effectively reducing the number of disk reads and increasing the data. Processing efficiency.
  • the alarm processing module may obtain the historical routing information of the faulty tunnel from the dynamic tunnel routing processing module, where the dynamic tunnel routing processing module may query the historical routing information of the dynamic tunnel from the database, for example, and may be based on the entire network.
  • the interface information is used to translate the IP address in the historical routing information into the interface information.
  • the alarm processing module can query all the alarms on the route that the tunnel passes and all the alarms on the tunnel according to the interface information.
  • the alarm processing module can alarm according to the deduction rules. Correlation analysis is performed to obtain the root cause alarm.
  • the derivation rule includes at least one of the following rules:
  • the upstream alarm is the root cause alarm of the downstream alarm
  • the interface alarm is the root cause alarm of the tunnel alarm
  • the physical interface alarm is bound.
  • the alarm processing module can effectively find the root cause alarm that causes the tunnel fault, such as the Ethernet signal loss (ETH_LOS) alarm, the laser alarm is the root cause alarm of the tunnel alarm, and the laser alarm is the upstream alarm of the ETH_LOS alarm.
  • the alarm processing module can automatically infer that the tunnel fault is caused by a laser alarm.
  • the fault diagnosis module provides intelligent diagnostic functions to find suspected points where tunnel faults occur. For example, the fault diagnosis module obtains the historical routing information of the faulty tunnel from the dynamic tunnel routing processing module, where the dynamic tunnel routing processing module can query the historical routing information of the dynamic tunnel from the database, and can perform historical routing information according to the information of the entire network interface.
  • the IP address is converted into interface information; the fault diagnosis module automatically generates a test command set according to the historical routing information of the dynamic tunnel (which may include a ping/Trace Route command for generating each hop from the source to the destination) and executes to analyze the execution.
  • the point of failure ie, the suspected point of failure).
  • the fault diagnosis module checks the configuration data according to the routing information of the dynamic tunnel.
  • the method may include: checking the status of the laser, the interface enabling state, whether the upstream and downstream IP addresses are in the same network segment, and whether the routing constraint information matches the actual routing information, and each routing node is configured. Whether the tunnel is successfully established, etc., and can prompt the user with the wrong configuration data.
  • the fault diagnosis module combines the routing information of the dynamic tunnel routing processing module for comprehensive analysis, and usually locates the root cause of the dynamic tunnel failure in one click.
  • the network management system can also implement dynamic tunnel fault diagnosis by using other module architectures. Not at all - enumeration.
  • the user can further confirm and troubleshoot the fault problem of the suspected fault point.
  • the network management system saves the routing information of the dynamic tunnel tunnel; in this case, when the dynamic tunnel is faulty, the network management system can query the latest routing information corresponding to the dynamic tunnel saved before the dynamic tunnel failure; Obtaining the latest routing information of the dynamic tunnel to parse the interface and the network element through which the dynamic tunnel passes; and then checking the interface and the network element that the dynamic tunnel passes through to obtain the suspected fault point in the dynamic tunnel, so that Troubleshoot the dynamic tunnel automatically, which helps reduce the complexity of troubleshooting dynamic tunnels and improves the efficiency of troubleshooting dynamic tunnels.
  • the network management device 400 may include: a memory 410, a query module 420, a route parsing module 430, and a diagnostic module 440.
  • the storage 410 is configured to save routing information of the dynamic tunnel.
  • the memory 410 may be specifically configured to: when receiving the notification that the dynamic tunnel first becomes the UP state, save the routing information of the dynamic tunnel at the time; when the user queries the current routing information of the dynamic tunnel, If the current routing information of the dynamic tunnel is different from the saved routing information corresponding to the dynamic tunnel, and the routing information storage instruction of the user is received, the current routing information of the dynamic tunnel is saved; and the dynamic tunnel corresponding to the dynamic tunnel is received.
  • the route change notification if the user saves the route information save command, the route change is saved. The routing information after the dynamic tunnel change carried in the knowledge.
  • the network management device 400 receives the notification that the dynamic tunnel is changed to the UP state for the first time.
  • the first node of the dynamic tunnel can send the dynamic tunnel to the network administrator to indicate that the dynamic tunnel is changed.
  • the memory 410 can save the routing information of the dynamic tunnel at the time. For example, when the user queries the current routing information of the dynamic tunnel, if the current routing information of the dynamic tunnel is different from the saved routing information corresponding to the dynamic tunnel, and the user receives the routing information saving instruction, the memory is received. The 410 can save the current routing information of the dynamic tunnel.
  • the memory 410 can also be used. Automatically save the current routing information of the dynamic tunnel). For example, after receiving the route change notification corresponding to the dynamic tunnel, the network management device 400 can save the routing information after the dynamic tunnel change carried in the route change notification, if the routing information storage instruction of the user is received. Certainly, after receiving the route change notification corresponding to the dynamic tunnel, the memory 410 may also automatically save the routing information after the dynamic tunnel change carried in the route change notification). For example, when the network management device 400 finds that the routing information of the dynamic tunnel is changed, the memory 410 automatically saves the routing information after the dynamic tunnel change under the instruction of the user instruction.
  • the network management device 400 can establish a first thread and a second thread.
  • the first thread queries the cache whether there is a route change notification corresponding to the dynamic tunnel. Then, the route change notification corresponding to the dynamic tunnel is stored in the cache; if yes, after the existing route change notification corresponding to the dynamic tunnel is deleted in the cache, the corresponding dynamic tunnel is received.
  • the route change notification is stored in the cache, where the route change notification carries the routing information after the dynamic tunnel change; the second thread reads the route change notification corresponding to the dynamic tunnel from the cache, and notifies the read route change notification
  • the routing information changed by the dynamic tunnel carried in the database is stored in the database. In this way, the processing of the route change notification of the dynamic thread by the first thread and the second thread forms a survivor consumer working mode, and only the last change event is cached in the cache, which is beneficial to reducing the number of times of storing the library.
  • the querying module 420 is configured to query the latest routing information corresponding to the dynamic tunnel saved by the memory 410 before the dynamic tunnel failure, when the dynamic tunnel fault is found;
  • the route parsing module 430 is configured to parse the interface and the network element that the dynamic tunnel passes through according to the latest routing information of the dynamic tunnel that is obtained by the query module 420.
  • the diagnosis module 440 is configured to check the interface and the network element that the dynamic tunnel passes through to learn the suspected fault point in the dynamic tunnel.
  • the diagnostic module 440 can include: a generating submodule 441 and a testing submodule 442;
  • the generating submodule 441 is configured to generate a test command set
  • the test sub-module 442 is configured to test the interface and the network element that the dynamic tunnel passes through by using the test command set generated by the generating sub-module 441 to obtain the suspected fault point of the dynamic tunnel.
  • the diagnostic module 440 can include: a query sub-module 443 and a derivation sub-module 444.
  • the query sub-module 443 is configured to query, according to the interface and the network element that the dynamic tunnel passes, all the alarms on the route that the dynamic tunnel passes and all the alarms on the dynamic tunnel.
  • the initiating sub-module 444 is configured to perform correlation analysis on all the alarms that are queried based on the preset derivation rules to obtain a root cause alarm, where the derivation rule may include, for example, at least one of the following rules: The root cause alarm of the downstream alarm, the interface alarm is the root cause alarm of the dynamic tunnel alarm, and the physical interface alarm is the root cause alarm of the logical interface alarm bound to it.
  • the diagnostic module 440 can include: a configuration check sub-module 445 and a determination sub-module 446.
  • the configuration checking sub-module 445 is configured to check the correctness of the configuration data of the interface and the network element that the dynamic tunnel passes through;
  • the determining sub-module 446 is configured to determine a suspected fault point in the dynamic tunnel according to the detection result. It can be seen that, in the embodiment, the network management device 400 saves the routing information of the dynamic tunnel tunnel. When the dynamic tunnel is faulty, the network management device 400 can query the latest routing information of the dynamic tunnel that is saved before the dynamic tunnel is faulty. The interface and the network element through which the dynamic tunnel passes are parsed according to the latest routing information of the dynamic tunnel obtained by the query; and the interface and the network element that the dynamic tunnel passes through are checked to obtain the suspected fault point in the dynamic tunnel. In this way, the fault diagnosis of the dynamic tunnel can be automatically implemented, which is beneficial to reduce the fault of troubleshooting the dynamic tunnel. Increase the efficiency of troubleshooting dynamic tunnels.
  • the embodiment of the invention further provides a fault diagnosis system, which may include a network management device 400.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Read-only memory, random access memory, disk or optical disk, etc.

Abstract

La présente invention porte sur un procédé de diagnostic de défaillance de tunnel dynamique, un dispositif et un système. Le procédé de diagnostic de défaillance de tunnel dynamique peut comprendre : la mise en mémoire d'informations d'acheminement relatives à un tunnel dynamique par un webmestre ; lorsqu'il est constaté que le tunnel dynamique présente une défaillance, l'interrogation des informations d'acheminement les plus récentes placées en mémoire avant la défaillance du tunnel dynamique et correspondant au tunnel dynamique ; l'analyse de l'interface et de l'élément de réseau à travers lesquels passe le tunnel dynamique en fonction des informations d'acheminement les plus récentes interrogées relatives au tunnel dynamique ; et la vérification de l'interface et de l'élément de réseau à travers lesquels passe le tunnel dynamique de manière à prendre connaissance d'un point de défaillance suspecté dans le tunnel dynamique. La solution technique décrite dans les modes de réalisation de la présente invention est avantageuse pour réduire la complexité du dépannage de défaillances du tunnel dynamique et améliorer l'efficacité du dépannage de tunnel dynamique.
PCT/CN2011/077469 2011-07-22 2011-07-22 Procédé de diagnostic de défaillance de tunnel dynamique, dispositif et système WO2012106914A1 (fr)

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CN201180001572.6A CN102308524B (zh) 2011-07-22 2011-07-22 动态隧道故障诊断方法及设备和系统
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