WO2012106914A1

WO2012106914A1 - Dynamic tunnel fault diagnosis method, device and system

Info

Publication number: WO2012106914A1
Application number: PCT/CN2011/077469
Authority: WO
Inventors: 刘德安
Original assignee: 华为技术有限公司
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-08-16
Also published as: CN102308524A; CN102308524B

Abstract

A dynamic Tunnel fault diagnosis method, device and system. The dynamic Tunnel fault diagnosis method can include: storing routing information about a dynamic Tunnel by a webmaster; when it is discovered that the dynamic Tunnel failed, querying the latest routing information stored before the dynamic Tunnel failed and corresponding to the dynamic Tunnel; parsing the interface and network element through which the dynamic Tunnel passes according to the queried latest routing information about the dynamic Tunnel; and checking the interface and network element through which the dynamic Tunnel passes so as to learn of a suspected fault point in the dynamic Tunnel. The technical solution provided by the embodiments of the present invention is advantageous for reducing the complexity of troubleshooting of faults of the dynamic Tunnel and improving the troubleshooting efficiency of the dynamic Tunnel.

Description

Dynamic tunnel fault diagnosis method, device and system

Technical field

The present invention relates to the field of communications technologies, and in particular, to a dynamic tunnel fault diagnosis method, device and system.

Background technique

At present, a static tunnel (Tunnel) or a dynamic tunnel is usually used in a bearer network to complete service transmission. There are thousands of bearer nodes in the bearer network.

The function of the tunnel is to provide a path between the two network nodes so that the data packets can be transparently transmitted on this path. 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. A virtual connection established between nodes to transport VPN packets. 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.

Summary of the invention

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.

To solve the above technical problem, the technical solution provided in the embodiment of the present invention is as follows:

A dynamic tunnel fault diagnosis method includes:

The NMS saves the routing information of the dynamic tunnel.

When the dynamic tunnel is faulty, 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;

Checking the interfaces and network elements that the dynamic tunnel passes through to learn the suspected fault points in the dynamic tunnel.

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.

It can be seen that, in the embodiment of the present invention, 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.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the drawings used in the embodiments and the prior art description will be briefly described below. Obviously, the drawings in the following description It is merely some embodiments of the present invention, and other drawings may be obtained from those skilled in the art without departing from the drawings.

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;

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.

detailed description

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.

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

The detailed description will be respectively made below through specific embodiments.

Referring first to Figure 1-a and Figure 1-b, there is a dynamic between source and sink NEs in the topology shown in Figure 1-a.

After the dynamic tunnel is faulty, for example, as shown in Figure 1-b, the network between the source and sink NEs becomes an unforeseen cloud. In this scenario, the existing technology needs to check all the NEs in the topology map. And the link to troubleshoot the fault, and often the topology in the actual network is often much more complicated, and the complexity of troubleshooting based on the existing technology will be high. An embodiment of the dynamic tunnel fault diagnosis method of the present invention may include: the network management saves the dynamic tunnel

If the dynamic tunnel is faulty, 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 interface and the NE that have passed through; check the interface and NE that the dynamic tunnel passes through to learn the suspected fault point in the dynamic tunnel.

Referring to Figure 2, specific steps may include:

201. The network management saves routing information of the dynamic tunnel.

In practical applications, the network administrator can save part or all of the routing information corresponding to the dynamic tunnel to the database, for example. When saving the latest routing information of the dynamic tunnel, the network management can be, for example, Keep or delete the historical routing information of the dynamic tunnel that the database has previously saved.

For example, the NMS sends a notification that the dynamic tunnel is in the Up state for the first time. After the route negotiation of the dynamic tunnel is successful and the data is successfully transmitted, the first node of the dynamic tunnel can send a notification to the NMS indicating that the dynamic tunnel becomes After the notification of the UP status, 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. (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, 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.

For example, 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.

202. When 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. In the actual application, 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.

203. 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.

204. 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.

In actual applications, 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.

For example, 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. For example, 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, and 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. For example, 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.

In addition, after the network management determines the suspected fault point in the dynamic tunnel, the user can further confirm and troubleshoot the fault problem of the suspected fault point.

It should be noted that 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.

It can be seen that, in this embodiment, the network management saves the routing information of the dynamic tunnel tunnel; When the dynamic tunnel is faulty, 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. Then, 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.

Referring to FIG. 3, in an application example of the embodiment of the present invention, 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, 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. For example, 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.

In an application scenario, the dynamic tunnel routing processing module can provide one or more of the following functions, for example:

Query the current routing information of the dynamic tunnel.

The historical routing information of the dynamic tunnel is saved and the query interface is provided.

Compare the difference between the current routing information of the dynamic tunnel and the historical routing information.

Parsing the routing information of the dynamic tunnel into interface information. Route change event processing.

In an application scenario, 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;

According to the deduction rules (for example, including the upstream and downstream relationship of the route, etc.), the alarm correlation rule analysis is performed, and the root cause alarm is analyzed.

In an application scenario, 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.

In a practical application, for example, 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. When 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).

When the current route information of the dynamic tunnel is queried by the user, if the current routing information of the dynamic tunnel is different from the saved historical routing information, 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.

After receiving the route change notification reported by the managed network element (which carries the new routing information of the dynamic tunnel), 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. When a large number of routing change events are reported, the network management implements the merging of multiple change events of the same tunnel, which is beneficial to effectively reduce the network management. The amount of data to be processed; based on the above mechanism, 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.

In an actual application, for example, 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, and the physical interface alarm is bound. The root cause alarm of the logical interface alarm.

Through the above analysis, 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.

In practical applications, 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. For example, 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.

In the actual application, 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.

It should be noted that the network management system can also implement dynamic tunnel fault diagnosis by using other module architectures. Not at all - enumeration.

It can be seen that, in this application example, 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.

It should be noted that, for each of the foregoing method embodiments, for the description of the package, it is expressed as a series of action combinations, but those skilled in the art should know that the embodiments of the present invention are not subject to the described action sequence. Limitations, as certain steps may be performed in other orders or concurrently in accordance with embodiments of the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details are not described in detail in an embodiment, and the related descriptions of other embodiments can be referred to.

In order to facilitate the implementation of the above technical solutions of the embodiments of the present invention, the corresponding devices for implementing the foregoing technical solutions are also provided in the embodiments of the present invention. Referring to FIG. 4, the network management device 400 provided by the embodiment of the present invention 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.

In an application scenario, 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. After receiving 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.

For example, the network management device 400 receives the notification that the dynamic tunnel is changed to the UP state for the first time. After the routing negotiation of the dynamic tunnel succeeds and the data can be normally transmitted, the first node of the dynamic tunnel can send the dynamic tunnel to the network administrator to indicate that the dynamic tunnel is changed. After being notified of the UP state, 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. (Of course, 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, 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.

For example, the network management device 400 can 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. 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.

Referring to FIG. 5-a, in an application scenario, 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.

Referring to FIG. 5-b, in an application scenario, 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.

Referring to FIG. 5-c, in an application scenario, 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.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be completed by a program instructing related hardware. 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.

The above description of the dynamic tunnel fault diagnosis method, device and system provided by the embodiments of the present invention is only for helping to understand the method and core idea of the present invention. Meanwhile, for those skilled in the art, according to the present invention The scope of the present invention is not limited by the scope of the present invention.

Claims

Rights request

A dynamic tunnel fault diagnosis method, comprising:

The NMS saves the routing information of the dynamic tunnel.

When the dynamic tunnel is faulty, the latest routing information of the corresponding dynamic tunnel saved before the dynamic tunnel fault is queried;

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;

2. The method of claim 1 wherein

Checking the interface and the network element that the dynamic tunnel passes through to learn the suspected fault points in the dynamic tunnel, including:

Generate a test command set;

The interface and the network element through which the dynamic tunnel passes are tested by using the test command set to learn the suspected fault point of the dynamic tunnel.

3. The method of claim 2, wherein

The generating test command set includes:

Generate a ping and/or trace route corresponding to each hop from the source node of the dynamic tunnel to the destination node;

4. The method of claim 1 wherein:

Querying 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;

Performing correlation analysis on all the queried alarms based on the preset deduction rules to obtain a root cause alarm, wherein the derivation rule includes at least one of the following rules: The upstream alarm is a 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.

5. The method of claim 1 wherein:

Checking the correctness of the configuration data of the interface and the NE that the dynamic tunnel passes through;

A suspected fault point in the dynamic tunnel is determined according to the detection result.

6. A method according to any one of claims 1 to 5, characterized in that

The routing information of the dynamic tunnel is saved, including:

After receiving the notification that the dynamic tunnel first becomes the UP state, the routing information of the dynamic tunnel is saved;

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 saver The current routing information of the dynamic tunnel;

After receiving the route change notification corresponding to the dynamic tunnel, if the route information storage command of the user is received, the routing information after the dynamic tunnel change carried in the route change notification is saved.

7. A method according to any one of claims 1 to 5, characterized in that

The routing information of the dynamic tunnel is saved, including:

Establishing 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 corresponding to the dynamic tunnel is received. The notification 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 notification corresponding to the dynamic tunnel is stored in the cache, where The routing change notification carries the routing information after the dynamic tunnel is changed;

The second thread reads the route change notification corresponding to the dynamic tunnel from the cache, and stores the changed route information of the dynamic tunnel carried in the read route change notification into the database.

8. A network management device, comprising:

a memory, configured to save routing information of the dynamic tunnel tunnel; a querying module, configured to query, when the dynamic tunnel is faulty, the latest routing information of the dynamic tunnel that is saved before the dynamic tunnel is faulty;

9. The network management device according to claim 8, wherein:

The diagnostic module includes:

Generating a submodule for generating a test command set;

a test submodule for testing the dynamics with a test command set generated by the generating submodule

The interface and the network element that the tunnel passes through to learn the suspected fault point of the dynamic tunnel.

Or,

The diagnostic module includes:

Querying a sub-module, 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;

And a derivation sub-module, configured to perform correlation analysis on all the alarms that are queried based on the preset deduction rules, to obtain a root cause alarm, where the derivation rule includes 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;

Or,

The diagnostic module includes:

The configuration check module 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 submodule is configured to determine a suspected fault point in the dynamic tunnel according to the detection result.

10. The network management device according to claim 8 or 9, wherein

The memory is 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 dynamic The current routing information of the tunnel corresponds to the saved dynamics. If the routing information of the tunnel is different, and the routing information of the user is saved, the current routing information of the dynamic tunnel is saved.

11. A fault diagnosis system, comprising:

A network management device according to any one of claims 8 to 10.