WO2019119269A1

WO2019119269A1 - Network fault detection method and control center device

Info

Publication number: WO2019119269A1
Application number: PCT/CN2017/117224
Authority: WO
Inventors: 代明
Original assignee: 深圳前海达闼云端智能科技有限公司
Priority date: 2017-12-19
Filing date: 2017-12-19
Publication date: 2019-06-27
Also published as: CN108235800A; CN108235800B

Abstract

A network fault detection method, and a device, relating to the field of communications. The embodiments of the present application can detect a network node in an ADN network. The method includes: a control center device acquiring a network connection state between network nodes in an ADN network; and determining an abnormal network node in the ADN network according to the network connection state. The present application is applied to fault detection in an ADN network.

Description

Network fault detection method and control center equipment

Technical field

The present application relates to the field of communications, and in particular, to a network fault detection method and a control center device.

Background technique

With the rapid development of Internet technology, users have higher and higher requirements for access speed of the network. At present, in order to improve the access speed of users, the prior art proposes to optimize the network in two ways: one is a CDN (Content Delivery Network) network technology, and the other is ADN (Application Delivery Networking, Application delivery network) network technology. Among them, the CDN network technology achieves an effect of improving access speed by caching static resources on network nodes closer to the end users, so that users can access nearby. The ADN network technology is mainly used to accelerate the transmission of dynamic data. When the ADN network is used to accelerate the transmission of dynamic data, the network request is transmitted from the user terminal to the source station every time, and the source station dynamically generates a response and then responds. Transfer back to the user terminal. In this process, the network request of the user terminal first arrives at the ADN network access node that is relatively close to the user terminal via the global load balancer of the ADN network. Then, through the global routing system of the ADN network, the optimal path from the access node to the source station corresponding to the network request is derived. Then, the network request of the user terminal is sequentially passed through several network nodes in the optimal path to reach the source station. The ADN network has the effect of selecting an optimal path from a limited network resource, thereby reducing the transmission delay between the user terminal and the source station.

In the above prior art, when a network node in the ADN network fails, the faulty network node cannot be found in time, thereby affecting the transmission performance of the network.

Summary of the invention

The embodiment of the present application provides a network fault detection method and a control center device, which are mainly used to solve the problem that when a network node in an ADN network fails, the network node cannot be found in time, thereby affecting the transmission performance of the network. .

To achieve the above objectives, the present application adopts the following technical solutions:

In a first aspect, an embodiment of the present application provides a network fault detection method, including: acquiring, by a control center device, a network connection state between network nodes in an ADN network; The connection status determines the anomalous network node in the ADN network.

In a second aspect, an embodiment of the present application provides a control center device, including: an obtaining unit, configured to acquire a network connection state between network nodes in an ADN network of an application delivery network; and a determining unit, configured to acquire in an acquiring unit After the network connection status, the abnormal network node in the ADN network is determined according to the network connection status.

In a third aspect, an embodiment of the present application provides a control center device, including: a communication interface, a memory, and a processor, the memory is configured to store computer execution code, and the computer execution code is used to control the processor to perform the implementation of the first aspect. The network fault detection method provided by the example.

In a fourth aspect, an embodiment of the present application provides a computer storage medium for storing computer software instructions for use in a control center device, which is designed to perform the network fault detection method provided by the embodiment of the first aspect above. code.

In a fifth aspect, an embodiment of the present application provides a computer program that can be directly loaded into an internal memory of a computer and includes software code. After the computer program is loaded and executed by the computer, the embodiment of the first aspect can be implemented. The network fault detection method provided.

In the present application, the control center device detects the network node in the ADN network by using the network connection status between the network nodes in the acquired ADN network. Therefore, fault detection is implemented in the ADN network, so that when a network node in the ADN network fails, the fault can be found in time, thereby improving the operation and maintenance efficiency and service quality of the ADN network.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only the present application. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

1 is a schematic structural diagram of an ADN network system according to an embodiment of the present application;

2 is a schematic flowchart of a network fault detection method according to an embodiment of the present application;

3 is a schematic structural diagram of a control center device according to an embodiment of the present application;

4 is a schematic structural diagram of a control center device according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a control center device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

As used herein, the terms "unit", "component", "module", "system" and the like are intended to mean a computer-related entity, which may be hardware, firmware, a combination of hardware and software, software. Or running software. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread in execution, a program, and/or a computer. As an example, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution, and a component can be located in a computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures thereon. These components may be passed, for example, by having one or more data packets (eg, data from one component that interacts with the local system, another component of the distributed system, and/or signaled through, such as the Internet) The network interacts with other systems to communicate in a local and/or remote process.

The application will present various aspects, embodiments, or features in a system that can include multiple devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.

In addition, in the embodiments of the present application, the word "exemplary" is used to mean an example, an illustration, or a description. Any embodiment or design described as "example" in this application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the term use examples is intended to present concepts in a concrete manner.

In the embodiment of the present application, information, signal, message, and channel may sometimes be mixed. It should be noted that when the difference is not emphasized, The meaning to be expressed is the same. "of", "corresponding (relevant)" and "corresponding" can sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.

The embodiment of the present application is applied to an ADN network system. As shown in FIG. 1 , a schematic structural diagram of an ADN network system provided by the present application, wherein when a user terminal device needs to access a source station, first, the user terminal device queries the global load balancer for an access node, and the global load balancer passes Load balancing, feeding back the appropriate access nodes for the user terminal equipment. The user terminal then sends a network request to the access node, and uses the global routing function of the ADN network to calculate the optimal path from the access node to the source station based on the link state and path configuration data between the network nodes. The network request is sent to the source station to provide network services to the user. The path configuration data includes an IP (Internet Protocol) address of the access node of the network path, an IP address of the source station, and sometimes an IP address of the transit node and an IP address of the source node. The return source node refers to the last hop network node of the source station. Specifically, when the path is selected for the network request in the ADN network, the optimal path of each network node in the path configuration data is selected based on the link state between the network nodes. It should be noted that the network path included in the path configuration data may also be a complete network path. When the network path included in the path configuration data is a complete network path, the global routing of the ADN network is not required. The function then re-selects the optimal path and directly sends the network request to the source station according to the network path in the path configuration data. For example, if the user terminal device sends a network request to the source station in FIG. 1, if the global load balancer is used to select the network node A as the access node, and the path configuration data further includes the access node of the network path as the network node. A. The source node is the network node E. Then, after the global routing function, the optimal path can be selected for the network request: user terminal equipment-network node A-network node C-network node E-source station. Similarly, if the network node B is selected as the access node by using the global load balancer, and the path configuration data further includes the access node of the network path as the network node B and the return source node as the network node E. Then, after the global routing function, the optimal path can be selected for the network request: user terminal equipment-network node B-network node D-network node E-source station. In addition, the ADN network system provided by the embodiment of the present application further includes a control center device, and the control center device can detect information such as a network connection state between each network node and a path configuration data of a network path corresponding to the network service, and use the data. Implementation of the application A network fault detection method. Then, after detecting that the network path is abnormal, the control center device can also send an alarm message to notify the operation and maintenance personnel to handle the fault in time.

The structure of the ADN network system described in this embodiment is for the purpose of more clearly explaining the technical solutions of the embodiments of the present application, and does not constitute a limitation of the technical solutions provided by the embodiments of the present application. The technical solutions provided in the embodiments of the present application are applicable to similar technical problems in the ADN network system of different configurations.

The embodiment of the present application provides a network fault detection method, which can be applied to an ADN network system similar to the network structure in FIG. The method can detect faults in time when a network node in the ADN network fails, and improve operation and maintenance efficiency and service quality of the ADN network. As shown in FIG. 2, the method includes the following steps

S101. The control center device acquires a network connection status between network nodes in the ADN network.

Specifically, the ADN network node continuously detects the network connection between the network nodes, including the source node and the source station, and transmits all of the data to the control center device.

S102. Determine an abnormal network node in the ADN network according to the network connection status.

In an embodiment, step S102 specifically includes the following contents of S102a1-S102a2:

S102a1: Determine, according to the network connection status, the number of network nodes that are not connected to the target network node.

S102a2: If the number of network nodes that are not connected to the target network node is greater than a threshold, determine that the target network node is an abnormal network node.

In the embodiment of the present application, the connection status of the other network node to the target network node is utilized to determine the health status of the target network node. When the connection of the network node exceeding the threshold number to the target network node is unreachable, it is determined that the operation of the target network node is abnormal.

In another embodiment, before performing step S102, the method further includes: acquiring path configuration data of the at least one network path, where the path configuration data includes a network node through which the network path passes. Step S102 specifically includes:

S102b, determining, according to the network connection status and the path configuration data of the at least one network path, that the target network node has a designated last hop network node in the at least one network path, and determining that the connection of the last hop network node to the target network node is unreachable, determining The target network node is an abnormal network node.

Specifically, the control center device stores path configuration data of each network service. The path configuration data includes the access node of the network path corresponding to the network service, the network address of the source station, and sometimes the network address of the transit node and the return source node, and organizes the network nodes in the form of a configuration path. When routing in the ADN network, the network node information in the path configuration data is selected, and an optimal path through these network nodes is selected. Therefore, when it is determined from the path configuration data of a network path that the target network node has a designated last hop network node in a network path, when the connection of the last hop network node to the target network node is unreachable, It can be determined that the target network node is faulty, and the transmission service with the network path is affected. Further, in the embodiment of the present application, the path configuration data of at least one network path is obtained, and the path configuration data is used to determine whether the target network node is included in the at least one network path and whether the target network node exists. The network node is hopped to determine whether the connection of the specified last hop network node to the target network node is unblocked, thereby determining the operation of the target network node and the operation of at least one network path through the target network node.

In addition, in the above method, since the connection between the last hop network node and the target network node is used in at least one network path, it is determined by this method that the abnormal network node can filter out the actual network service. The affected network is abnormally fluctuating, and the abnormal situation of the network nodes affecting the network service is more accurately determined. For example, if the connection of the network node A to the network node B is unreachable, but the network node A does not appear in any configuration path, that is, the network configuration node A is included in the path configuration data without any network path, even if the network node A reaches the network node The connection of B is unreachable, and the network service carried in the ADN network is not affected. Therefore, the network node B is not used as an abnormal node at this time.

Exemplarily, if the path configuration data of a network path includes the network address of the access node of the network path, the network address of the source node, and the network address of the source station. Then, when the connection from the source node to the source station fails, it is determined that the source station is an abnormal node.

S103. Detect a network path that passes through an abnormal network node.

In an embodiment, step S103 specifically includes the following contents of S103a1-S103a3:

S103a1: Determine whether the abnormal network node is an access node in the network path.

S103a2: When it is determined that the abnormal network node is an access node in the network path, it is determined whether there is at least a preset number of network nodes that are not connected to the abnormal network node.

S103a3: If it is determined that at least a preset number of network nodes are not connected to the abnormal network node, determining that the network path is abnormal.

Specifically, it is considered that when a certain number of network nodes are not connected to the access node, there is a great probability that the terminal device cannot send the network request to the access node, and the global routing function is utilized. When the access node selects the next hop network node, it may not be possible to select a suitable network node. Further, in the present application, when the abnormal network node is an access node in the network path, it is determined whether the network path is affected by determining the number of network nodes to the abnormal network node.

Further, in an embodiment, after determining that the abnormal network node is an access node in the network path in step S103a2, the method may further include: the control center device sends a stop scheduling instruction to the global load balancer, so that the global The load balancer stops scheduling network requests to the abnormal network node according to the stop scheduling instruction.

After determining that the fault of the access node is released, the method further includes: the control center device sending a recovery scheduling instruction to the global load balancer, so that the global load balancer resumes scheduling the network request to the abnormal network node according to the recovery scheduling instruction.

In this embodiment, it is considered that when an access node in the network path has an abnormality or a fault, it may affect the transmission of other network requests that are subsequently scheduled to the access node. Therefore, after determining the access node abnormality in the network path, the control center device sends a stop scheduling instruction to the global load balancer, so that the global load balancer stops scheduling the network request to the abnormal network node. In turn, the problem that the transmission of subsequent network requests is affected due to the failure of the access node is avoided.

In another embodiment, step S103 specifically includes:

S103b1, determining whether the abnormal network node is an access node in the network path;

S103b2: When the abnormal network node is another network node other than the access node in the network path, determine whether there is a designated last hop network node of the abnormal network node in the network path.

S103b3: If there is a specified last hop network node of the abnormal network node in the network path, and the previous hop network node fails to connect to the abnormal network node, it is determined that the network path runs abnormally; or if there is no abnormal network in the network path When the node specifies the last hop network node, and at least a predetermined number of network nodes reach the connection of the abnormal network node, it is determined that the network path is abnormal.

Specifically, after determining that the non-access node in the network path is an abnormal network node, it cannot be given whether the fault of the abnormal network node affects the operation of the network path. In this embodiment, after determining that the abnormal node is not an access node, the impact of the abnormal node on the network path is determined in two cases:

In the first case, if the abnormal network node exists in the network path and the designated last hop network node of the abnormal network node, that is, the abnormal network node and the designated last hop network node are key nodes in the network path, Therefore, the global routing function of the ADN network cannot bypass the two nodes and re-select the path for the network path. At this time, if the last hop network node fails to connect to the abnormal network node, it can be determined that the network path will be affected. For example, if the network node B is an abnormal network node, in the path configuration data of a network path, the network node A is the last hop network node of the network node B, and when the network node A is disconnected from the network node B, the network node A can determine The network path has been affected.

In the second case, if the abnormal network node does not exist in the network path and the designated last hop network node of the abnormal network node, that is, in the process of specifically transmitting data such as the network request, a global routing function is required for the The abnormal network node selects the appropriate last hop network node. In this embodiment, the overall operation of the abnormal network node is determined by determining the number of network nodes that are not connected to the abnormal network node. At this time, if a preset number of network nodes are not connected to the abnormal network node, it may be determined that it may be difficult to select a suitable last hop network node for the abnormal network node even if the global routing function is utilized. Thus, In this embodiment, when there is no designated last hop network node of the abnormal network node in the network path, and at least a predetermined number of network nodes are not connected to the abnormal network node, it is determined that the network path runs abnormally.

In an embodiment, when the abnormal network node in the ADN network is determined according to the network connection state in step S102, the abnormal cause of the abnormal network node may be simultaneously recorded. For example, the abnormal cause of the abnormal network node detected by the method of S102a1-S102a2 is recorded as "the connection of the network node exceeding the threshold number to the local network node is unreachable", and the abnormal network node detected by the method of step S102b is used. The cause of the exception is recorded as "No connection to the immediate neighbor in the network path."

Further, when the network path passing through the abnormal network node is detected in step S103, the abnormality cause of the abnormal network node can be directly used for detection. For example, when it is determined that the abnormal network node is an access node in the network path, in step S103a2, when it is determined whether there is at least a preset number of network nodes, the connection of the abnormal network node is unreachable, and the abnormality of the abnormal network node may be directly queried. The reason is that when it is determined that the abnormal cause of the abnormal network node is “the connection of the network node exceeding the threshold number to the local network node is unreachable”, it may be directly determined that the network path is affected by the abnormal network node, and the network path runs abnormally. . For another example, when it is determined that the abnormal network node is another network node other than the access node in the network path B, the abnormal cause of the abnormal network node is queried, and when the abnormal reason is “in the network path B, the direct neighbor node is connected. If no, the abnormal network node determines that there is a specified last hop network node in the network path and the connection between the two adjacent nodes is unreachable, that is, the content of steps S103b2-S103b3 is completed.

S104. When detecting that the network path is abnormal, send an alarm message.

Specifically, when it is detected that the fault in the abnormal network node has affected the operation of the network path, that is, the network path is abnormal, the alarm information may be sent by sending an alarm email or a short message to notify the operation and maintenance personnel to solve the problem in time. .

Further, in an embodiment, the alarm information includes location information of an abnormal network node that affects network path operation and an abnormality cause. In order to help the operation and maintenance personnel to determine the location and cause of the fault in time.

Based on the foregoing network fault detection method, the present application provides a control center device. FIG. 3 shows a possible structural diagram of a control center device involved in the present application. Specifically, the control center device 30 includes: an obtaining unit 301 and a determining unit 302, where:

The obtaining unit 301 is configured to acquire a network connection state between network nodes in the ADN network of the application delivery network.

The determining unit 302 is configured to determine, after the acquiring unit 301 acquires the network connection status, the abnormal network node in the ADN network according to the network connection status.

In an embodiment, the determining unit 302 is configured to determine, according to the network connection status, the number of network nodes that are not connected to the target network node; and determine the target network if the number of network nodes that are not connected to the target network node is greater than a threshold. The node is an abnormal network node.

In another embodiment, the obtaining unit 301 is further configured to acquire path configuration data of at least one network path, where the path configuration data includes a network node through which the network path passes;

The determining unit 302 is configured to determine, according to the network connection status and the path configuration data of the at least one network path, that the target network node has a specified last hop network node in the at least one network path, and the last hop network node to the target network node When the connection is unreachable, it is determined that the target network node is operating abnormally.

Optionally, the control center device 30 further includes: a detecting unit 303 and a sending unit 304;

The detecting unit 303 is configured to detect, after the determining unit 302 determines the abnormal network node in the ADN network according to the network connection status, the network path that passes through the abnormal network node;

The sending unit 304 is configured to send an alarm message when the detecting unit 303 detects that the network path is abnormal.

In an embodiment, the detecting unit 303 is specifically configured to determine whether the abnormal network node is an access node in the network path; when determining that the abnormal network node is an access node in the network path, determining whether there is at least a preset If the number of network nodes is not connected to the abnormal network node, if it is determined that there is at least a predetermined number of network nodes to the abnormal network node, the network path is abnormal.

Further, the sending unit 304 is further configured to: after the detecting unit abnormal network node is an access node in the network path, send a stop scheduling instruction to the global load balancer, so that the global load balancer stops the network request according to the stop scheduling instruction. Dispatched to the abnormal network node.

In an embodiment, the detecting unit 303 is specifically configured to determine whether the abnormal network node is an access node in the network path; when the abnormal network node is another network node other than the access node in the network path, Whether there is a specified last hop network node of the abnormal network node in the network path;

If there is a specified last hop network node of the abnormal network node in the network path, and the previous hop network node fails to connect to the abnormal network node, it is determined that the network path runs abnormally; or if there is no abnormal network node in the network path When the last hop network node is specified, and at least a predetermined number of network nodes are disconnected from the abnormal network node, it is determined that the network path is abnormal.

The control center device in the embodiment of the present application can be applied to implement the foregoing method embodiments. Therefore, the technical solutions that can be obtained are also referred to the foregoing method embodiments.

In the case of an integrated unit, FIG. 4 shows a possible structural diagram of the control center device involved in the above embodiment. The control center device 40 includes a processing module 401 and a communication module 402. The processing module 401 is configured to control and control the actions of the control center device. For example, the processing module 401 is configured to support the control center device to perform steps S102, S103 and/or other processes for the techniques described herein in FIG. Module 401 is also used to control communication module 402 to support the control center device to perform steps S101, S104 and/or other processes for the techniques described herein in FIG. Communication module 402 is used to support The control center device 40 can also communicate with other physical devices. The control center device 40 can also include a storage module 403 for storing program codes and data of the control center device 40.

The processing module 401 can be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication module 402 can be a transceiver, a transceiver circuit, a communication interface, or the like. The storage module 6403 can be a memory.

When the processing module 401 is a processor, the communication module 402 is a communication interface, and the storage module 403 is a memory, the control center device according to the embodiment of the present invention may be the control center device shown in FIG. 5.

Referring to FIG. 5, the control center device 50 includes a processor 501, a communication interface 502, a memory 503, and a bus 504. The communication interface 502, the processor 501, and the memory 503 are connected to each other through a bus 504. The bus 504 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. Wait. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 5, but it does not mean that there is only one bus or one type of bus.

The steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions. The embodiment of the present invention further provides a storage medium, which may include a memory 503 for storing computer software instructions used by the control center device, and includes program code designed to execute the network fault detection method provided in the foregoing embodiment. Specifically, the software instructions may be composed of corresponding software modules, and the software modules may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), and Erasable Programmable ROM (EPROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Register, Hard Disk, Mobile Hard Disk, CD-ROM, or is well known in the art. Any other form of storage medium. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor.

The embodiment of the present invention further provides a computer program, which can be directly loaded into the memory 503 and contains software code. After the computer program is loaded and executed by the computer, the network fault detection method provided by the foregoing embodiment can be implemented.

Those skilled in the art will appreciate that in one or more examples described above, the functions described herein can be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present invention. The scope of the protection, any modifications, equivalent substitutions, improvements, etc., which are made on the basis of the technical solutions of the present invention, are included in the scope of the present invention.

Claims

A network fault detection method, comprising:

The control center device acquires the network connection status between the network nodes in the ADN network of the application delivery network;

An abnormal network node in the ADN network is determined according to the network connection status.
The method according to claim 1, wherein the determining the abnormal network node in the ADN network according to the network connection status comprises:

Determining, according to the network connection status, the number of network nodes that are not connected to the target network node;

And determining, if the number of network nodes that are not connected to the target network node is greater than a threshold, determining that the target network node is the abnormal network node.
The method according to claim 1, wherein before the determining the abnormal network node in the ADN network according to the network connection status, the method further comprises:

Obtaining path configuration data of at least one network path, where the path configuration data includes a network node through which a network path passes;

Determining the abnormal network node in the ADN network according to the network connection status, including:

Determining, according to the network connection status and path configuration data of the at least one network path, that a designated last hop network node of the target network node exists in the at least one network path, and the last hop network node to the When the connection of the target network node is unreachable, it is determined that the target network node is the abnormal network node.
The method according to any one of claims 1-3, wherein after determining the abnormal network node in the ADN network according to the network connection status, the method further comprises:

Detecting a network path passing through the abnormal network node;

When it is detected that the network path is abnormal, an alarm message is sent.
The method according to claim 4, wherein the detecting the network path passing through the abnormal network node comprises:

Determining whether the abnormal network node is an access node in the network path;

When it is determined that the abnormal network node is an access node in the network path, determining whether at least a preset number of network nodes are not connected to the abnormal network node;

If it is determined that there is at least a preset number of network nodes to the abnormal network node, the network path is determined to be abnormal.
The method according to claim 5, wherein, after determining that the abnormal network node is an access node in the network path, the method further comprises:

The control center device sends a stop scheduling instruction to the global load balancer to cause the global load balancer to stop scheduling network requests to the abnormal network node according to the stop scheduling instruction.
The method according to claim 4, wherein the detecting the network path passing through the abnormal network node comprises:

Determining whether the abnormal network node is an access node in the network path;

When the abnormal network node is another network node other than the access node in the network path, determining whether a specified last hop network node of the abnormal network node exists in the network path;

If the designated last hop network node of the abnormal network node exists in the network path, and the last hop network node fails to connect to the abnormal network node, determining that the network path runs abnormally;

Or determining the network path if the designated last hop network node of the abnormal network node does not exist in the network path, and at least a predetermined number of network nodes are disconnected from the abnormal network node. Running abnormally.
A control center device, comprising:

An obtaining unit, configured to acquire a network connection state between network nodes in an ADN network of an application delivery network;

a determining unit, configured to determine, after the acquiring unit acquires the network connection status, an abnormal network node in the ADN network according to the network connection status.
The control center device according to claim 8, wherein

The determining unit is configured to determine, according to the network connection status, a number of network nodes that are not connected to the target network node; and if the number of network nodes that are not connected to the target network node is greater than a threshold, determine the target network. The node is the abnormal network node.
The control center device according to claim 8, wherein

The acquiring unit is further configured to acquire path configuration data of at least one network path, where the path configuration data includes a network node through which a network path passes;

The determining unit is configured to determine, according to the network connection status and path configuration data of the at least one network path, that the target network node has a designated last hop network node in the at least one network path, and the last hop The connection of the network node to the target network node is not In the meantime, it is determined that the target network node is operating abnormally.
The control center device according to any one of claims 8 to 10, wherein the control center device further comprises: a detecting unit and a sending unit;

The detecting unit is configured to detect, after the determining unit determines an abnormal network node in the ADN network according to the network connection state, a network path that passes through the abnormal network node;

The sending unit is configured to send an alarm message when the detecting unit detects that the network path is abnormal.
The control center device according to claim 11, wherein

The detecting unit is specifically configured to determine whether the abnormal network node is an access node in the network path; when determining that the abnormal network node is an access node in the network path, determining whether at least a pre-presence exists The network node of the number is connected to the abnormal network node; if it is determined that there is at least a preset number of network nodes to the abnormal network node, the network path is determined to be abnormal.
A control center device according to claim 12, wherein

The sending unit is further configured to send a stop scheduling instruction to the global load balancer after the abnormal network node of the detecting unit is an access node in the network path, so that the global load balancer is configured according to the The stop scheduling instruction stops scheduling network requests to the abnormal network node.
The control center device according to claim 11, wherein

The detecting unit is specifically configured to determine whether the abnormal network node is an access node in the network path; when the abnormal network node is another network node other than an access node in the network path, Determining whether a specified last hop network node of the abnormal network node exists in the network path;

If the designated last hop network node of the abnormal network node exists in the network path, and the last hop network node fails to connect to the abnormal network node, determining that the network path runs abnormally; or, if If the designated last hop network node of the abnormal network node does not exist in the network path, and at least a predetermined number of network nodes are disconnected from the abnormal network node, determining that the network path runs abnormally.
A control center device, comprising: a memory, a communication interface, and a processor, the memory and the communication interface being coupled to the processor, the memory for storing computer execution code, the processor for Executing the computer to execute code control execution rights The network fault detection method according to any one of claims 1 to 7, wherein the communication interface is used for data transmission between the control center device and an external device.
A computer storage medium, characterized by computer software instructions for storing a control center device, comprising program code designed to perform the network failure detection method of any one of claims 1 to 7.
A computer program product, characterized in that it can be directly loaded into an internal memory of a computer and contains software code, and the computer program can be loaded and executed by a computer to implement the network according to any one of claims 1 to 7. Fault detection method.