WO2016070837A1

WO2016070837A1 - Fault report method and system, and related device

Info

Publication number: WO2016070837A1
Application number: PCT/CN2015/093976
Authority: WO
Inventors: 薛海强
Original assignee: 中国移动通信集团公司
Priority date: 2014-11-07
Filing date: 2015-11-06
Publication date: 2016-05-12
Also published as: CN105634785A; CN105634785B

Abstract

Disclosed are a fault report method and system, and a related device. The method comprises: acquiring, by an E-EMS, fault information and a correlation between the fault information and report information, the fault information comprising one or more of the following types of information: virtual network function (VNF) fault information, virtual machine fault information, virtual resource fault information and hardware resource fault information; determining, by the E-EMS, the report information corresponding to the acquired fault information according to the acquired fault information and the correlation between the fault information and the report information; and reporting, by the E-EMS, the report information to a network management system OSS/BSS.

Description

Fault reporting method, system and related device

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 20141064383, filed on Nov. 7, 2014, the entire content of which is hereby incorporated by reference.

Technical field

The present disclosure relates to network management technologies, and in particular, to a fault reporting method, system, and related apparatus.

Background technique

Network Function Virtualization (NFV) carries a lot of functional software processing by using general-purpose hardware such as x86 and virtualization technology. Thereby reducing the cost of equipment expensive in the network.

Referring to FIG. 1, at present, the fault processing process based on the virtual network function (VNF) mainly includes:

1) The Virtual Network Element Management Center (VNF Manager, VNFM) receives infrastructure failure notifications related to a specific VNF instance. The Network Function Virtualization Orchestrator (NFVO) directly receives infrastructure failures that are not related to a specific VNF.

Here, infrastructure failures associated with a particular VNF instance include physical infrastructure failures (1.1) and virtual infrastructure failures (1.2), and infrastructure failures that are not related to a particular VNF include physical infrastructure failures (1.3) and virtual infrastructure failures (1.4). ).

2) The Virtual Network Element Management Center (VNFM) performs its own fault correlation operation.

3) VNFM may forward related VNF instance fault information to different other fault association points, mainly EM (Element Management) (3.1) and Network Function Virtualization Dispatch Center (NFVO) (3.2).

4) The VNF instance may send application layer faults to different association points, mainly EM (4.1) and VNFM (4.2). The VNFM then forwards the fault information to NFVO (4.3).

5) Fault correlation may occur at any fault correlation point. The EM performs fault correlation to find the root cause and impact on the VNF (5.1). NFVO performs fault correlation to find root cause and impact on network traffic (5.2). In order to support certain scenarios, NFVO may only map infrastructure failures. Shoots on the VNF and/or network services without being associated with the VNF application layer failure and forwards the results to the Operation Support System (OSS).

6) At different fault correlation points, a fault re-solving behavior will occur. The EM may forward the relevant VNF instance fault information to the OSS (6.1). The EM may trigger a corrective action request to the VNFM (6.2). NFVO may forward relevant fault information to OSS (6.3). NFVO may trigger a corrective action to VNFM (6.4). If the VNFM is responsible for associating certain events, the VNFM itself may trigger a corrective action (6.5).

7) Additional fault correlation and processing may occur in the OSS.

Existing fault handling techniques have the following disadvantages:

1) The existing network management system can only manage physical network elements or virtual network elements. The management physical network element and virtual network element use two sets of network management systems, and the generality is not good;

2) NFV defines the management scheme of the virtual network element and the fault reporting scheme, but it is only applicable to the OSS for the virtualized network and cannot be compatible with the traditional OSS.

Summary of the invention

In view of this, in order to solve the existing technical problems, the embodiments of the present disclosure provide:

A fault reporting method includes:

The information management system (E-EMS) obtains the fault information and the corresponding relationship between the fault information and the reported information, and the fault information includes one or more of the following: virtual network function VNF fault information, virtual machine fault Information, virtual resource failure information, hardware resource failure information;

The E-EMS determines the report information corresponding to the acquired fault information according to the acquired fault information and the corresponding relationship between the fault information and the reported information;

The E-EMS reports the reported information to the network management system OSS/BSS (Business support system).

In a specific embodiment, the E-EMS obtains fault information, including:

By detecting the faulty object, obtaining fault information, and/or receiving fault information from other network elements.

In a specific embodiment, the E-EMS obtains the correspondence between the fault information and the reported information, including:

The E-EMS receives the fault information from other network elements and receives the corresponding relationship between the fault information and the reported information, or

The E-EMS actively sends a request message to other network elements, and then receives the corresponding relationship between the fault information returned by the other network element and the reported information.

In a specific embodiment, the other network element is a virtual network element management center VNFM.

In a specific embodiment, the method further includes:

The E-EMS sends a correction indication message to the other network element, where the correction indication message carries the corrective measure determined by the E-EMS according to the preset correction strategy and the fault information.

The embodiment of the present disclosure further provides an E-EMS, including: a first acquiring module, a second acquiring module, a reporting information determining module, and a reporting module;

The first acquiring module is configured to acquire fault information.

The second acquiring module is configured to obtain a correspondence between the fault information and the reported information;

The report information determining module is configured to determine report information corresponding to the acquired fault information according to the acquired fault information and the corresponding relationship between the fault information and the report information;

The reporting module is configured to report the reported information to the OSS/BSS.

In a specific embodiment, the first acquiring module is specifically configured to detect fault information to obtain fault information, and/or receive fault information from other network elements.

In a specific embodiment, the second acquiring module is configured to: when the first acquiring module receives the fault information from the other network element, receive the corresponding relationship between the fault information and the reported information, or actively send the information to other network elements. After the message is requested, the corresponding relationship between the fault information returned by the other network element and the reported information is received.

In a specific embodiment, the second acquiring module is configured to receive a correspondence between the fault information and the reported information from the VNFM, or send a request message to the VNFM, and then receive the fault information and the reported information returned by the VNFM. Correspondence.

In a specific embodiment, the E-EMS further includes a correction indication module,

The correction indication module is configured to send a correction indication message to the other network element, where the correction indication message carries the corrective measure determined according to the preset correction strategy and the fault information.

The embodiment of the present disclosure further provides a fault reporting system, including: an E-EMS and an OSS/BSS, wherein the E-EMS is the E-EMS of claim 6.

In a specific embodiment, the system further includes a VNFM,

The VNFM is configured to send a fault relationship between the fault information and/or the fault information and the reported information to the E-EMS.

In a specific embodiment, the VNFM is further configured to acquire fault information by detecting, and/or receive fault information from the virtual resource management center VIM.

In a specific embodiment, the system further includes a VIM,

The VIM is configured to provide a VNFM with a corresponding relationship between the fault information and the reported information.

In a specific embodiment, the E-EMS is further configured to send a correction indication message to the VNFM, where the correction indication message carries a corrective measure determined according to the preset correction strategy and the fault information;

The VNFM is also used to perform the corrective action.

The fault reporting method, the system, and the related device in the embodiment of the present disclosure, the E-EMS obtains the fault information, and the corresponding relationship between the fault information and the reported information, where the fault information includes one or more of the following: virtual network function VNF fault information The virtual machine fault information, the virtual resource fault information, and the hardware resource fault information; the E-EMS determines the report information corresponding to the acquired fault information according to the acquired fault information and the corresponding relationship between the fault information and the reported information; The E-EMS reports the reported information to the network management system OSS/BSS. The solution described in the embodiment of the present disclosure can report the fault of the physical network element, and can report the failure of the virtual network element, so that the versatility is good, and the system in the embodiment of the present disclosure can be compatible with the traditional OSS and the network management fault management system. , the scope of application is large.

DRAWINGS

FIG. 1 is a schematic diagram of a fault processing process based on VNF;

2 is a schematic flowchart of a fault reporting method according to an embodiment of the present disclosure;

3 is a schematic structural diagram of an E-EMS according to an embodiment of the present disclosure;

4 is a schematic structural diagram of another E-EMS according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a fault reporting according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of another fault reporting structure according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another fault reporting according to an embodiment of the present disclosure;

8 is a schematic structural diagram of a system capable of implementing fault reporting according to Embodiment 1 of the present disclosure;

FIG. 9 is a schematic flowchart of a fault reporting method according to Embodiment 2 of the present disclosure;

FIG. 10 is a schematic flowchart of a fault reporting method according to Embodiment 3 of the present disclosure.

detailed description

In order to implement the fault reporting that can be compatible with the traditional network and the virtual network, the embodiment of the present disclosure provides a fault reporting method. As shown in FIG. 2, the method includes:

Step 201: The E-EMS obtains the fault information and the corresponding relationship between the fault information and the reported information, where the fault information includes one or more of the following: virtual network function VNF fault information, virtual machine fault information, virtual resource fault information, and hardware resources. accident details;

Step 202: The E-EMS determines the report information corresponding to the acquired fault information according to the acquired fault information and the corresponding relationship between the fault information and the reported information.

Step 203: The E-EMS reports the reported information to the network management system OSS/BSS.

In a specific embodiment, the E-EMS obtains fault information, including:

For example, in the event of a failure, the VNF directly reports the VNF failure and application layer failure to the E-EMS; the PNF directly reports the PNF failure to the E-EMS; the Virtual Infrastructure Management (VIM) and the PIM respectively virtual infrastructure The fault and the physical infrastructure fault are reported to the E-EMS; the E-EMS reports the obtained virtual machine fault as a middleware fault to the OSS/BSS. Associate virtualized network element failures, virtual machine failures, and virtual infrastructure failures with physical infrastructure failures. The E-EMS reports the association information as fault information to the OSS/BSS for processing.

In a specific embodiment, the method further includes:

It should be noted that the E-EMS can manage multiple network element faults at the same time, such as: attribution. Home Subscriber Server (HSS), Call Session Control Function (CSCF), virtualized HSS (vHSS), virtualized CSCF (vCSCF), but not limited to Internet access.

It should be noted that after the virtualized network evolves to a certain extent, all the physical network elements will be replaced by virtualized network elements. At this time, the E-EMS acts as a switch and only manages the virtualized network elements. Then report the fault information of the physical network element.

The embodiment of the present disclosure further provides an E-EMS, as shown in FIG. 3, the E-EMS includes: a first obtaining module 31, a second obtaining module 32, a reporting information determining module 33, and a reporting module 34;

The first obtaining module 31 is configured to acquire fault information.

The second obtaining module 32 is configured to acquire a correspondence between the fault information and the reported information.

The report information determining module 33 is configured to determine report information corresponding to the acquired fault information according to the acquired fault information and the corresponding relationship between the fault information and the report information;

The reporting module 34 is configured to report the report information to the OSS/BSS.

In a specific embodiment, the first obtaining module 31 is specifically configured to detect fault information to obtain fault information, and/or receive fault information from other network elements.

In a specific embodiment, the second obtaining module 32 is configured to receive the fault information of the other network element and receive the corresponding relationship between the fault information and the reported information, or actively forward to other networks. The element sends a request message, and then receives a correspondence between the fault information returned by the other network element and the reported information.

In a specific embodiment, the second obtaining module 32 is configured to receive a correspondence between the fault information and the reported information from the VNFM, or send a request message to the VNFM, and then receive the fault information and the report returned by the VNFM. Correspondence of information.

In a specific embodiment, as shown in FIG. 4, the E-EMS further includes a correction indication module 35,

The correction indication module 35 is configured to send a correction indication message to the other network element, where the correction indication message carries the corrective measure determined according to the preset correction strategy and the fault information.

The embodiment of the present disclosure further provides a fault reporting system. As shown in FIG. 5, the system includes: an E-EMS 51 and an OSS/BSS 52, wherein the E-EMS 51 is as shown in FIG. 3 or FIG. Shown E-EMS.

In a specific embodiment, as shown in FIG. 6, the system further includes VNFM 53,

The VNFM 53, for transmitting the fault information and/or the corresponding relationship between the fault information and the reported information to the E-EMS 51.

In a specific embodiment, the VNFM 53 is further configured to acquire fault information by detecting, and/or receive fault information from the virtual resource management center VIM.

In a specific embodiment, as shown in FIG. 7, the system further includes a VIM 54,

The VIM 54 is configured to provide a correspondence between the fault information and the reported information to the VNFM 53.

In a specific embodiment, the E-EMS 51 is further configured to send a correction indication message to the VNFM 53, where the correction indication message carries a corrective measure determined according to a preset correction strategy and the fault information;

The VNFM 53, is also used to perform the corrective action.

With the solution provided by the embodiment of the present disclosure, the traditional physical network element device and the virtualized network element device can be managed at the same time to implement fault reporting.

The technical solutions of the present disclosure are further described in detail below through specific embodiments.

Example 1

FIG. 8 is a schematic structural diagram of a system capable of implementing fault reporting according to Embodiment 1 of the present disclosure. As shown in FIG. 8 , the system mainly includes a novel network element management system (E-EMS), a network management system (OSS/BSS), and a network. Function Virtualization Dispatch Center (NFVO), Virtual Network Element Management Center (VNFM), Virtual Resource Management Center (VIM), Network Function Virtualization Resource (NFVI), virtual network element, and physical network element.

In this embodiment, the EMS is mainly composed of two physical network elements and two corresponding virtual network elements (specifically, not limited to the two types of network elements); respectively: Home Subscriber Server (HSS) Call Session Control Function (CSCF), but not limited to HSS and CSCF. The CSCF further includes three types of CSCFs, namely, a proxy-CSCF (P-CSCF), a service-CSCF (S-CSCF), and an inquiry-CSCF (I-CSCF). In this embodiment, the three CSCFs are collectively referred to as X-CSCF. NFVO is an important part of the network, mainly dealing with network services and related faults.

This embodiment does not focus on network service level faults, and mainly deals with network level faults and hardware level faults that cause network element faults. The VNFM management network element life cycle and its fault information are reported, and the VIM management resource allocation and its fault information are reported. NFVI is all resources in network function virtualization, including hardware resources and virtual resources. Hardware resources are virtualized into virtual resources through hypervisor.

A virtual network element refers to a network element function implemented by running software of a specific function in a virtual environment. Therefore, when a virtual network element fails, virtual machine faults, virtual resource faults, and hardware resource faults may need to be reported and processed.

Based on the structure shown in FIG. 8, the fault reporting mechanism may be: when the physical network element HSS and the X-CSCF are faulty, the E-EMS obtains the fault information of the physical network element, and reports the fault information to the OSS/ BSS is processed. When the virtual machine of the virtual network element fails, the E-EMS reports the detected virtual machine as a middleware fault to the OSS/BSS for processing. For example, when the hardware or the virtual resource fails, the VIM reports the virtual resource fault and the hardware resource fault to the VNFM. The VNFM obtains the hardware resource fault and the virtual resource according to the relationship between the virtual network element VNF and the virtual resource and the hardware resource. The fault information is transmitted to the E-EMS, and the E-EMS associates the hardware resource fault and the virtual resource fault with the VNF, and converts the hardware resource and the virtual resource fault into the network management fault according to the set mapping rule (compatible with the traditional network management system). Reported to the OSS; the specific mapping rules can be set according to different maintenance requirements, such as mapping virtual faults to physical network element middleware faults, mapping physical resource faults to physical network element hardware faults, and so on. In the end, the E-EMS maps the VNF fault, the virtual machine fault, the virtual resource and the hardware resource fault to the physical network element fault, and reports it to the OSS/BSS for processing.

In this embodiment, the E-EMS has global configuration information of the network. When the new configuration information is manually entered into the E-EMS, the E-EMS transmits the new configuration information to the VNFM, and the VNFM forwards the information to the NFVO.

It should be noted that, as the virtualized network element is gradually increased, when all the network elements of the entire network are evolved into virtualized network elements, or the OSS is modified by itself, the E-EMS is no longer required to be reported by the traditional physical network element. In this case, the E-EMS can stop the fault mapping function for the physical resources and the virtual resources, and report the fault of the virtual network element in the manner defined by the NFV.

Example 2

The fault reporting mechanism based on this embodiment is the same as that of the first embodiment. In this embodiment, the mapping relationship between the fault information and the reported information (that is, the mapping table of the VNF, the virtual machine, the virtual resource, and the hardware resource) is stored in the VNFM. After obtaining hardware resource failure, virtual resource failure, virtual machine failure, and virtual network element failure information, the VNFM sends the failure information and the mapping table to the E-EMS, and the E-EMS performs the association of the failure, and the E-EMS forwards the E-EMS. Relevant fault information and fault related information are sent to the OSS, and the OSS is used to handle the fault.

FIG. 9 is a schematic flowchart of a fault reporting method according to Embodiment 2 of the present disclosure. As shown in FIG. 9 , the process specifically includes:

Step 901: The VNFM receives hardware resource fault information, virtual resource fault information, and virtual machine fault information.

After the network is virtualized, the NE function is running on one or several virtual machines. When a virtual machine fails, the fault of the virtual machine is reported to the E-EMS. The E-EMS reports the fault information to the OSS. /BSS, this can effectively improve the ability of fault handling.

Step 902: The VNF reports the virtual network element fault information to the VNFM.

Step 903: The VNFM forwards the obtained hardware and virtual resource fault, the virtual machine fault, and the virtual network element fault information to the E-EMS, and sends the mapping relationship table of the virtual network element, the virtual machine, the virtual resource, and the hardware resource to the E- EMS.

Step 904: The E-EMS performs fault association.

For example, E-EMS associates a VNF failure into a virtual machine failure, ultimately associated with a hardware failure.

Step 905: The E-EMS forwards the associated fault information to the OSS.

Step 906: The E-EMS will trigger a corrective action to the VNFM, which performs this corrective action.

It should be noted that this step is an optional step.

Step 907: Additional fault correlation and fault handling are performed in the OSS.

It should be noted that this step is an optional step.

Example 3

The fault reporting mechanism based on the embodiment is the same as that in the first embodiment. In this embodiment, the mapping relationship between the VNF, the virtual machine, the virtual resource, and the hardware resource is not stored in the VNFM, and the hardware resource failure, virtual resource failure, and virtual are obtained in the VNFM. After the machine fault and the virtual NE fault information, the VNFM forwards the related fault information to the E-EMS. The E-EMS does not obtain a mapping relationship table, and requests a mapping relationship table of a specific fault to the VNFM. The VNFM requests a mapping relationship between the virtual machine, the virtual resource, and the hardware resource, and the VIM sends the mapping relationship to the VNFM. After the VNFM obtains the mapping relationship, the virtual machine is mapped to the VNF, and the VNFM sends the mapping table of the specific VNF, the virtual machine, the virtual resource, and the hardware resource to the E-EMS, and the E-EMS performs the fault association, E-EMS. The related fault information and the fault related information are forwarded to the OSS, and the fault is processed by the OSS.

FIG. 10 is a schematic flowchart of a fault reporting method according to Embodiment 3 of the present disclosure. As shown in FIG. 10, the process specifically includes:

Step 1001: The VNFM receives hardware resource failure information, virtual resource failure information, and virtual machine failure information.

Step 1002: The hardware and virtual resource failure, virtual machine failure, and virtual network element failure information obtained by the VNFM are forwarded to the E-EMS.

Step 1003: The VNF reports the virtual network element fault information to the VNFM.

Step 1004: The E-EMS requests a mapping relationship table between the specific virtual network element, the virtual machine, the virtual resource, and the hardware resource to the VNFM.

Step 1005: The VNFM requests a mapping relationship table between a specific virtual machine, a virtual resource, and a hardware resource to the VIM.

Step 1006: The VIM returns a mapping table of virtual machines, virtual resources, and hardware resources.

Step 1007: The VNFM sends a mapping table between the virtual network element and the virtual machine mapping relationship table, the virtual machine, and the virtual resource and the hardware resource to the E-EMS.

Step 1008: The E-EMS performs fault association according to the obtained mapping relationship table.

Step 1009: The E-EMS forwards related fault information and fault association information to the OSS.

Step 1010: The E-EMS triggers a corrective action to the VNFM, which performs the corrective action.

It should be noted that this step is an optional step.

Step 1011: Perform additional fault correlation and fault handling in the OSS.

It should be noted that this step is an optional step.

Each of the above modules may be implemented by a central processing unit (CPU), a digital signal processor (DSP), or a field-programmable gate array (FPGA) in the electronic device.

Those skilled in the art will appreciate that embodiments of the present disclosure can be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above description is only for the preferred embodiments of the present disclosure, and is not intended to limit the scope of the disclosure.

Claims

A fault reporting method includes:

The NE management system E-EMS obtains the fault information and the corresponding relationship between the fault information and the reported information, and the fault information includes one or more of the following: virtual network function VNF fault information, virtual machine fault information, virtual resource fault information, hardware Resource failure information;

The E-EMS determines the report information corresponding to the acquired fault information according to the acquired fault information and the corresponding relationship between the fault information and the reported information;

The E-EMS reports the reported information to the network management system OSS/BSS.
The method of claim 1, wherein the E-EMS obtains fault information, including:

By detecting the faulty object, obtaining fault information, and/or receiving fault information from other network elements.
The method of claim 2, wherein the E-EMS obtains a correspondence between the fault information and the reported information, including:

The E-EMS receives the fault information from other network elements and receives the corresponding relationship between the fault information and the reported information, or

The E-EMS actively sends a request message to other network elements, and then receives the corresponding relationship between the fault information returned by the other network element and the reported information.
The method of claim 3, wherein the other network element is a virtual network element management center VNFM.
The method of claim 4 further comprising:

The E-EMS sends a correction indication message to the other network element, where the correction indication message carries the corrective measure determined by the E-EMS according to the preset correction strategy and the fault information.
An E-EMS includes: a first acquiring module, a second acquiring module, a reporting information determining module, and a reporting module; wherein

The first acquiring module is configured to acquire fault information.

The second acquiring module is configured to obtain a correspondence between the fault information and the reported information;

The report information determining module is configured to determine report information corresponding to the acquired fault information according to the acquired fault information and the corresponding relationship between the fault information and the report information;

The reporting module is configured to report the reported information to the OSS/BSS.
The E-EMS according to claim 6, wherein

The first acquiring module is specifically configured to detect fault information to obtain fault information, and/or receive fault information from other network elements.
The E-EMS according to claim 7, wherein

The second acquiring module is configured to: when the first acquiring module receives the fault information from the other network element, receive the corresponding relationship between the fault information and the reported information, or send the request message to other network elements actively, and then receive the request message. The corresponding relationship between the fault information returned by the other network element and the reported information.
The E-EMS according to claim 8, wherein

The second acquiring module is configured to receive a correspondence between the fault information and the reported information from the VNFM, or send a request message to the VNFM, and then receive a correspondence between the fault information returned by the VNFM and the reported information.
The E-EMS of claim 9, wherein the E-EMS further comprises a correction indication module,

The correction indication module is configured to send a correction indication message to the other network element, where the correction indication message carries the corrective measure determined according to the preset correction strategy and the fault information.
A fault reporting system includes: an E-EMS and an OSS/BSS, wherein the E-EMS is the E-EMS of claim 6.
The system of claim 11 wherein the system further comprises a VNFM,

The VNFM is configured to send a fault relationship between the fault information and/or the fault information and the reported information to the E-EMS.
The system of claim 12, wherein

The VNFM is further configured to acquire fault information by detecting, and/or receive fault information from the virtual resource management center VIM.
The system of claim 12 wherein the system further comprises a VIM,

The VIM is configured to provide a VNFM with a corresponding relationship between the fault information and the reported information.
The system of claim 12, wherein

The E-EMS is further configured to send a correction indication message to the VNFM, where the correction indication message carries a corrective measure determined according to the preset correction strategy and the fault information;

The VNFM is also used to perform the corrective action.