Fault recovery plan determining method, apparatus, and system, and computer storage medium

Patent metadata

Field	Value
Publication number	US-12294483-B2
Application number	US-202318302629-A
Country	US
Kind code	B2
Filing date	Apr 18, 2023
Priority date	Oct 20, 2020
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

This application discloses a fault recovery plan determining method, apparatus, and system, and a computer storage medium, and belongs to the field of network technologies. First, a control device obtains a similar known fault that is in a plurality of known faults and whose fault root cause and a fault root cause of a target fault in a network meet a similarity condition. Then, the control device obtains a fault recovery plan corresponding to the similar known fault. The control device determines, based on the fault recovery plan corresponding to the similar known fault, a fault recovery plan corresponding to the target fault.

First claim

What is claimed is:

1. A fault recovery plan determining method, comprising:
obtaining, by a control device, a similar known fault that is in a plurality of known faults and whose fault root cause and a fault root cause of a target fault in a network meet a similarity condition, wherein the fault root cause is represented by a fault root cause feature, the fault root cause feature comprises a fault root cause object, a fault root cause event, the fault root cause event is an abnormal event causing a fault, the fault root cause object indicates a type of a fault root cause network entity, wherein the type of a fault root cause network entity includes an interface type, a protocol type, or a service type, and the fault root cause network entity is a network entity to which the fault root cause event belongs;
obtaining, by the control device, a fault recovery plan corresponding to the similar known fault; and
determining, by the control device based on the fault recovery plan corresponding to the similar known fault, a fault recovery plan corresponding to the target fault.

2. The method according to claim 1 , wherein
the fault root cause network entity is a physical interface, and the fault root cause feature further comprises one or more of an intermittent interface disconnection indication of the fault root cause network entity, an interface suspension indication of the fault root cause network entity, a packet receiving/sending state of the fault root cause network entity, an interface protocol status of the fault root cause network entity, or a physical interface status of a device in which the fault root cause network entity is located;
the fault root cause network entity is a border gateway protocol (BGP) peer, and the fault root cause feature further comprises a BGP route flapping indication of the fault root cause network entity and/or a physical interface status of a device in which the fault root cause network entity is located; or
the fault root cause feature further comprises a physical interface status of a device in which the fault root cause network entity is located.

3. The method according to claim 1 , wherein the obtaining, by a control device, a similar known fault that is in a plurality of known faults and whose fault root cause and a fault root cause of a target fault in a network meet a similarity condition comprises:
obtaining, by the control device, fault root cause features of the plurality of known faults;
for each of the plurality of known faults, calculating, by the control device, a similarity between the fault root cause of the target fault and a fault root cause of the known fault based on a fault root cause feature of the target fault and the fault root cause feature of the known fault; and
determining, by the control device based on the similarities between the fault root cause of the target fault and the fault root causes of the plurality of known faults, the similar known fault that is in the plurality of known faults and whose fault root cause and the fault root cause of the target fault meet the similarity condition.

4. The method according to claim 3 , wherein the calculating, by the control device, a similarity between the fault root cause of the target fault and a fault root cause of the known fault based on a fault root cause feature of the target fault and the fault root cause feature of the known fault comprises:
inputting, by the control device, the fault root cause feature of the target fault and the fault root cause feature of the known fault into a similarity model, to obtain the similarity that is between the fault root cause of the target fault and the fault root cause of the known fault and that is output by the similarity model, wherein the similarity model is obtained through training based on fault root cause features of a plurality of sample faults, the sample fault is marked with a category label, and sample faults marked with a same category label correspond to a same fault recovery plan.

5. The method according to claim 4 , wherein the method further comprises:
inputting, by the control device, fault root cause features of a plurality of sample fault pairs into the similarity model in batches, to obtain a similarity that is between fault root causes of each sample fault pair and that is output by the similarity model, wherein the plurality of sample fault pairs comprise a first-category sample fault pair and a second-category sample fault pair, the first-category sample fault pair comprises two sample faults marked with a same category label, and the second-category sample fault pair comprises two sample faults marked with different category labels; and
determining, by the control device, a similarity threshold based on the similarities between the fault root causes of the plurality of sample fault pairs.

6. The method according to claim 1 , wherein the determining, by the control device based on the fault recovery plan corresponding to the similar known fault, a fault recovery plan corresponding to the target fault comprises:
evaluating, by the control device based on a network configuration of the network, feasibility of the fault recovery plan corresponding to the similar known fault, wherein the network configuration comprises a networking topology and/or device data, and the device data comprises one or more of management plane data, data plane data, or control plane data; and
determining, by the control device, one or more of feasible fault recovery plans as the fault recovery plan corresponding to the target fault.

7. The method according to claim 6 , wherein the determining, by the control device, one or more of feasible fault recovery plans as the fault recovery plan corresponding to the target fault comprises:
in response to a case in which a plurality of fault recovery plans are feasible, separately evaluating, by the control device based on the network configuration of the network, degrees of impact of the plurality of fault recovery plans on a service running in the network; and
determining, by the control device, a fault recovery plan that is in the plurality of fault recovery plans and that has a minimum degree of impact on the service running in the network as the fault recovery plan corresponding to the target fault.

8. The method according to claim 1 , wherein the method further comprises:
determining, by the control device based on the target fault and the fault recovery plan corresponding to the target fault, a target network device of a to-be-executed plan in the network; and
sending, by the control device, a plan execution instruction to the target network device, wherein the plan execution instruction is used to instruct the target network device to execute the fault recovery plan corresponding to the target fault, and the plan execution instruction comprises the fault recovery plan corresponding to the target fault.

9. A device for determining fault recovery plan, wherein the device comprises:
at least one processor; and
at least one memory, coupled to the at least one processor and configured to store instructions that when executed by the at least one processor cause the device to:
obtain a similar known fault that is in a plurality of known faults and whose fault root cause and a fault root cause of a target fault in a network meet a similarity condition, wherein the fault root cause is represented by a fault root cause feature, the fault root cause feature comprises a fault root cause object, a fault root cause event, the fault root cause event is an abnormal event causing a fault, the fault root cause object indicates a type of a fault root cause network entity, wherein the type of a fault root cause network entity includes an interface type,

Assignees

• Huawei Tech Co Ltd

Inventors

• Xie Yuming
• Li Ye
• Li Juchang
• Gao Yunpeng
• Hou Yanxiang
• Yang Yancheng

Classifications

• H04L41/16

  using machine learning or artificial intelligence · CPC title

• H04L41/0627

  by acting on the notification or alarm source · CPC title

• H04L41/0631 Primary

  using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis · CPC title

• G06F18/22

  Matching criteria, e.g. proximity measures · CPC title

• H04L41/0654 Primary

  using network fault recovery (ring fault isolation or reconfiguration in loop networks without recovery actions by a network management system H04L12/437) · CPC title