WO2022063127A1

WO2022063127A1 - Virtualized network service updating method, electronic device, and computer readable storage medium

Info

Publication number: WO2022063127A1
Application number: PCT/CN2021/119624
Authority: WO
Inventors: 李杨
Original assignee: 中兴通讯股份有限公司
Priority date: 2020-09-22
Filing date: 2021-09-22
Publication date: 2022-03-31
Also published as: CN114301733A

Abstract

The present invention provides a virtualized network service updating method, comprising: in response to a change of a VNFD of at least one VNF instance, arranging and generating at least one target NSD model according to VNFD change information of the at least one VNF instance; and according to the at least one target NSD model, updating the NSD of at least one network service instance to be updated, to which the at least one VNF instance belongs. Also provided are an electronic device and a computer readable medium.

Description

Update method for virtualized network service, electronic device, and computer-readable storage medium

technical field

The embodiments of the present disclosure relate to the field of computer technologies, and in particular, to a method for updating a virtualized network service, an electronic device, and a computer-readable storage medium.

Background technique

With Network Functions Virtualization (NFV, Network Functions Virtualization)

With the continuous evolution of technology, Software Defined Network (SDN, Software Defined Network) technology, and the gradual commercialization of 5G network slicing technology, in order to more effectively deploy, manage, and operate networks, more and more virtualized network functions are used as network services. (NS, Network Service) method to deploy and manage. That is, one or more virtual network function (VNF, Virtualised Network Function)/physical network function (PNF, Physical Network Function) instances are formed into a network service instance, and network service capabilities are provided through the network service instance. A VNF is described by a Virtual Network Function Descriptor (VNFD, Virtualised Network Function Descriptor).

The Network Function Virtualization Management and Orchestration (NFV-MANO, NFV Management and Orchestration) defined by the European Telecommunications Standards Institute (ETSI, European Telecommunications Standards Institute) provides a series of management functions and architectures for network services, and supports network services as the entry point. Top-down management of VNF/PNF.

However, when the VNF instance updates the VNFD, a series of manual operations are required, the operations are complicated, and it is easy to affect the external network associated with the VNF instance in the network service.

SUMMARY OF THE INVENTION

Embodiments of the present disclosure provide a method for updating a virtualized network service, an electronic device, and a computer-readable storage medium.

An embodiment of the present disclosure provides a method for updating a virtualized network service, including: in response to a change of the VNFD of at least one VNF instance, orchestrating and generating at least one target network service descriptor (NSD) according to the VNFD change information of the at least one VNF instance , Network Service Descriptor) model; and according to the at least one target NSD model, update the NSD of at least one to-be-updated network service instance to which the at least one VNF instance belongs.

Embodiments of the present disclosure further provide an electronic device, including: one or more processors; and a storage device, on which one or more programs are stored, when the one or more programs are processed by the one or more programs The one or more processors implement the method for updating a virtualized network service according to an embodiment of the present disclosure.

Embodiments of the present disclosure further provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the processor enables the processor to implement the method for updating a virtualized network service according to the embodiment of the present disclosure. .

Description of drawings

1 is a flowchart of an update method according to an embodiment of the present disclosure;

2 is another flowchart of an update method according to an embodiment of the present disclosure;

3 is a flowchart of some steps in an update method according to an embodiment of the present disclosure;

4 is another flowchart of some steps in the update method according to an embodiment of the present disclosure;

5 is a schematic diagram of updating an NSD of a network service instance to be updated according to a target NSD model according to an embodiment of the present disclosure;

6 is another flowchart of some steps in the update method according to an embodiment of the present disclosure;

7 is another flowchart of an update method according to an embodiment of the present disclosure;

8 is another flowchart of an update method according to an embodiment of the present disclosure;

9 is a block diagram of an electronic device according to an embodiment of the present disclosure;

10 is a block diagram of a computer-readable storage medium according to an embodiment of the present disclosure;

11 is a signaling diagram of an update method according to an embodiment of the present disclosure;

FIG. 12 is another signaling diagram of an update method according to an embodiment of the present disclosure; and

FIG. 13 is yet another signaling diagram of an update method according to an embodiment of the present disclosure.

detailed description

In order to make those skilled in the art better understand the technical solutions of the present disclosure, the update method, electronic device, and computer-readable storage medium of the virtualized network service provided by the present disclosure will be described in detail below with reference to the accompanying drawings.

Example embodiments are described more fully hereinafter with reference to the accompanying drawings, but which may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Various embodiments of the present disclosure and various features of the embodiments may be combined with each other without conflict.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terminology used herein is used to describe particular embodiments only and is not intended to limit the present disclosure. As used herein, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that when the terms "comprising" and/or "made of" are used in this specification, the stated features, integers, steps, operations, elements and/or components are specified to be present, but not precluded or Add one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in common dictionaries should be construed as having meanings consistent with their meanings in the context of the related art and the present disclosure, and will not be construed as having idealized or over-formal meanings, unless expressly so limited herein.

The inventors of the present disclosure have found that under the existing VNF and SDN technologies and NFV-MANO architecture, in the VNF instance updating VNFD scenario, there is a limitation that the VNF instance needs to be modified before the network service instance can be modified. Updating an instance of a web service is accomplished by orchestrating the NSD of the web service and performing a series of manual operations. When there are multiple VNF instances in the network service and the VNF instances in the network service need to be updated one by one, the above problems in the scenario of updating the VNFD with the existing VNF instance are particularly prominent.

The inventor of the present disclosure further researches and finds that, since there are scenarios in which multiple network services share one or more VNF instances, in order to update the VNFD of the VNF instances shared by multiple network services, the VNF instance must first be removed from the network service. Moving out, the VNFD update is performed independently for each network service, and one or more VNF instances shared by multiple network services cannot be updated at the same time. The update operation is complicated, and it is easy to have an impact on the external network associated with the VNF instance in the network service.

In view of this, referring to FIG. 1 , an embodiment of the present disclosure provides a method for updating a virtualized network service, including steps S100 and S200.

In step S100, in response to the change of the VNFD of the at least one VNF instance, at least one target NSD model is generated according to the VNFD change information of the at least one VNF instance.

In step S200, according to the at least one target NSD model, the NSD of at least one to-be-updated network service instance to which the at least one VNF instance belongs is updated.

The embodiments of the present disclosure aim to implement a Network Functions Virtual Machine Orchestration (NFVO, Network Functions Virtualization Orchestration) system to update the NSD of a network service without changing the existing NFV and SDN technologies and the NFV-MANO architecture.

In the embodiment of the present disclosure, through step S100, when the VNFD of a VNF instance changes, that is, when the VNFD of any VNF instance changes due to updating the VNFD, the generation target can be arranged according to the VNFD change information of the VNF instance NSD model; when the VNFDs of multiple VNF instances change, that is, when the VNFDs of multiple VNF instances change due to VNFD updates, the target NSD model can be generated according to the VNFD change information of multiple VNF instances. This embodiment of the present disclosure makes no special limitation on this.

In the embodiment of the present disclosure, when at least one VNF instance belongs to the same network service instance, a target NSD model is generated by orchestration in step S100, and the generated target NSD model is consistent with the requirements of the VNF instance in the network service instance to which the VNF instance belongs When at least one VNF instance belongs to a plurality of network service instances, a plurality of target NSD models corresponding to each network service instance in the plurality of network service instances are generated by step S100 orchestration, and the generated multiple target NSD models The models are respectively consistent with the requirements of the VNF instance in the corresponding network service instance.

It should be noted that when one VNF instance changes VNFD due to VNFD updating, or multiple VNF instances change VNFD due to VNFD updating, in step S100, each target NSD model is generated by one orchestration , so that multiple VNFD instances do not need to be orchestrated when VNFD changes due to VNFD updates.

It should be noted that orchestration refers to the orderly arrangement and organization of various network service resources and other elements for the purpose of user needs, so that each component of the network operates in a balanced and coordinated manner.

In the embodiment of the present disclosure, when the NSD of the network service instance to be updated is updated through step S200, it is only necessary to update the corresponding information in the NSD of the network service instance according to the target NSD model, so that the VNF instance does not need to be removed from each network service. The NSD update can be performed on multiple network services at the same time, and the external network associated with the VNF instance in the network service will not be affected.

In the embodiment of the present disclosure, based on the existing NFV-MANO architecture, a processing module is provided. The NSD management module generates the target NSD model according to the signaling arrangement; the processing module also generates the NSD signaling for updating the NSD of the network service instance according to the generated NSD model and VNFD change information, and then the network service management module in the existing NFV-MANO architecture according to The signaling updates the NSD of the network service instance.

In addition, the embodiment of the present disclosure further provides a collection module, which can collect VNFD change information of the VNF instance, and provide the VNFD change information to the processing module. No manual participation is required in the process of updating the NSD of the network service instance to be updated through steps S100 to S200, which reduces the operational complexity of updating the VNFD and NSD by the virtualized network service.

According to the method for updating virtualized network services provided by the embodiments of the present disclosure, a target NSD model can be generated when the VNFD of at least one VNF instance changes, and the NSD of at least one network service instance to which the VNF instance belongs can be updated according to the target NSD model. The update can be applied to scenarios where network service updates share VNF instances, and can also be applied to scenarios where network service updates do not share VNF instances. In the scenario where network service updates share VNF instances, there is no need to remove the VNF instance from each network service. When there are multiple VNF instances in the network service that need to update the VNFD, there is no need to orchestrate the NSD of the network service multiple times, and no manual operation is required. Thus, the operational complexity of updating the VNFD and NSD by the virtualized network service is reduced.

In the embodiment of the present disclosure, the target NSD model generated by step S100 corresponds to the network service instance to be updated one-to-one, and the target NSD model is arranged on the basis of the current NSD of the corresponding network service instance to be updated according to the VNFD change information generated; in step S200, update the NSD of the corresponding network service instance to be updated by using the target NSD model.

Accordingly, referring to FIG. 2 , in some embodiments, step S100 may include step S110.

In step S110, according to the VNFD change information of the at least one VNF instance and the current NSD of each of the at least one network service instance to be updated, orchestrate the generation of each network service instance corresponding to the at least one network service instance to be updated. A model of the target NSD.

Correspondingly, referring to FIG. 2 , in some embodiments, step S200 may include step S210.

In step S210, according to the at least one target NSD model, the NSD of each corresponding to-be-updated network service instance in the at least one target NSD model is updated respectively.

It should be noted that, in the embodiment of the present disclosure, when at least one VNF instance belongs to multiple network service instances, the target NSD model corresponding to each network service instance may be generated first through step S110, and then through step S210, according to each network service instance The target NSD model corresponding to the network service instance updates the NSDs of each network service instance; it is also possible to generate a target NSD model corresponding to a network service instance through step S110, and through step S210, according to the generated target NSD model for the network service The NSD of the instance is updated, and then the NSD of the next network service instance is updated through steps S110 and S210 until the NSDs of multiple network service instances are updated. This embodiment of the present disclosure does not make any special limitation on this.

In the embodiment of the present disclosure, when the target NSD model is generated by orchestration in step S100, the NSD of the network service instance to be updated is not rearranged. As an optional implementation manner, when generating the target NSD model through the orchestration of step S100, an initial NSD template may be generated based on the current NSD of the network service instance to be updated, and then the initial NSD template may be updated according to the VNFD change information to generate the target NSD model.

Accordingly, referring to FIG. 3 , in some embodiments, step S110 may include steps S111 to S112.

In step S111, an initial NSD template is generated according to the current NSD of the network service instance to be updated.

In step S112, the target NSD model corresponding to the to-be-updated network service instance is generated according to the VNFD change information of the at least one VNF instance and the NSD initial template.

Correspondingly, in some embodiments, the VNFD change information of the at least one VNF instance includes at least one of VNF configuration file change information, associated network change information, and external connection point (CP, Connection Point) change information. Referring to FIG. 4. Step S112 may include at least one of the following steps S112a to S112c.

In step S112a, the VNFD definition information in the NSD initial template is updated according to the VNF configuration file change information.

In step S112b, the virtual link descriptor (VLD, Virtual link Descriptor) in the NSD initial template is updated according to the associated network change information.

In step S112c, the routing configuration information in the NSD initial template is updated according to the external connection point change information.

It should be noted that the VNF profile (for example, VnfProfile) change information may include (but not limited to) the identifier of the VNF instance (for example, VNFDID), the type of the VNF instance (for example, VnfType), the name of the VNF instance (for example, VnfName) ); the routing configuration information may include (but not limited to) express route (exroute, express route), border gateway protocol (BGP, Border Gateway Protocol).

FIG. 5 is a schematic diagram of updating an NSD of a network service instance to be updated according to a target NSD model according to an embodiment of the present disclosure.

In Figure 5, the VNFD change information includes VNF configuration file change information, associated network change information and external connection point change information. The VNFD in the NSD initial template is updated according to the VNF configuration file change information, and the NSD initial template is updated according to the associated network change information. The VLD in the template, and the exroute and BGP in the routing configuration information in the NSD initial template are updated according to the external connection point change information to generate the target NSD model. The target NSD model includes VNFD definition information, physical network function descriptor (PNFD, Physical Network Function Descriptor) definition information, VLD, virtual network function forwarding graph descriptor (VNFFGD, VNF Forwarding Graph Descriptor), service access point (SAP, Service Access Port), routing configuration information (Router). The NSD of the network service to be updated is updated according to the target NSD model.

Accordingly, in some embodiments, referring to FIG. 6 , step S210 may include step S211.

In step S211, according to the target NSD model corresponding to each of the at least one network service instance to be updated, update the VNFD definition information, VLD and routing configuration information in the current NSD of the network service instance to be updated at least one of.

In some embodiments, referring to FIG. 7 , before performing subsequent steps in response to a change in the VNFD of at least one VNF instance, that is, before step S100 , the method may further include steps S301 to S302 .

In step S301, VNFD change information of the at least one VNF instance is acquired.

In step S302, the at least one network service instance to be updated is determined according to the VNFD change information of the at least one VNF instance.

It should be noted that, in this embodiment of the present disclosure, the VNFD change information may include (but not limited to) the VNFD instance identifier VNFDID, external network information, and the identifier of the network service instance to which the VNF instance belongs.

In the embodiment of the present disclosure, when the VNFD of the VNF instance needs to be updated, a new VNFD may be generated first, and then the VNF instance is updated according to the new VNFD.

Correspondingly, referring to FIG. 8 , in some embodiments, the method may further include steps S401 to S402.

In step S401, at least one target VNFD is generated.

In step S402, the at least one VNF instance is updated according to the at least one target VNFD.

9, an embodiment of the present disclosure provides an electronic device, including: one or more processors 101; and a memory 102, on which one or more programs are stored, when the one or more programs are stored by one or more The processor executes, causing one or more processors to implement the method for updating a virtualized network service according to various embodiments of the present disclosure.

One or more I/O interfaces 103 are connected with the processor 101 and the memory 102 through the bus 104 to realize information exchange.

The processor 101 is a device with data processing capability, which includes (but is not limited to) a central processing unit (CPU) and the like. The memory 102 is a device with data storage capability, which includes (but is not limited to) random access memory (RAM, more specifically such as SDRAM, DDR, etc.), read only memory (ROM), electrified erasable programmable read only memory (EEPROM). ), flash memory (FLASH). The I/O interface (read and write interface) 103 can realize information exchange, which includes (but is not limited to) a data bus (Bus) and the like.

In some embodiments, processor 101, memory 102, and I/O interface 103 are interconnected by bus 104, which in turn is connected to other components of the computing device.

The method for updating the virtualized network service has been described in detail above, and will not be repeated here.

Referring to FIG. 10 , an embodiment of the present disclosure provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the processor enables the processor to implement a virtualized network service according to various embodiments of the present disclosure. Update method.

In order to enable those skilled in the art to more clearly understand the technical solutions provided by the embodiments of the present disclosure, the technical solutions provided by the embodiments of the present disclosure will be described in detail below through specific embodiments.

Example 1

FIG. 11 is a signaling diagram for updating the NSD of the network service instance to be updated according to the first embodiment.

In Embodiment 1, the VNF instance belongs to a network service instance to be updated, that is, different network service instances do not share the VNF instance.

As shown in Figure 11, NFVO includes a VNFD management module, a VNF management module, a collection module, a processing module, an NSD management module, and a network service management module.

Updating the NSD of the network service instance to be updated includes operations E101 to E111.

At E101, the operator or the upper-level system generates the target VNFD through the VNFD management module.

At E102, the operator or the upper-level system updates the VNF instance according to the target VNFD through the VNF management module.

At E103, the VNF management module reports to the collection module that the VNFD of the VNF instance changes.

At E104, the collection module collects VNFD change information of the VNF instance, and reports the VNFD change information to the processing module.

At E105, the processing module sends, according to the VNFD change information, the first signaling for arranging and generating the target NSD model to the NSD management module based on the current NSD of the network service instance to be updated to which the VNF instance belongs.

At E106, the NSD management module generates a target NSD model according to the first signaling arrangement.

At E107, the NSD management module returns the target NSD model orchestration result to the processing module.

At E108, the processing module sends the second signaling for updating the NSD of the network service instance to be updated to the network service management module according to the target NSD model.

At E109, the network service management module updates the NSD of the network service instance to be updated according to the second information.

At E110, the network service management module returns a result of updating the NSD of the network service instance to be updated to the processing module.

At E111, the network service management reports the network service update change notification to the operator or the upper-level system.

Embodiment 2

Fig. 12 is a signaling diagram for updating the NSD of the network service instance to be updated according to the second embodiment.

In the second embodiment, the VNF instance belongs to multiple network service instances to be updated, that is, different network service instances share the VNF instance.

As shown in Figure 12, NFVO includes a VNFD management module, a VNF management module, a collection module, a processing module, an NSD management module, and a network service management module.

Updating the NSD of the network service instance to be updated includes operations E201 to E206.

At E201, the operator or the upper-level system generates the target VNFD through the VNFD management module.

At E202, the operator or the upper-level system updates the VNF instance according to the target VNFD through the VNF management module.

At E203, the VNF management module reports to the collection module that the VNFD of the VNF instance has changed.

At E204, the collection module collects VNFD change information of the VNF instance, and reports the VNFD change information to the processing module.

At E205, operations E205-1 to E205-6 are cyclically performed to update the NSDs of all network services that share the VNF instance.

At E205-1, the processing module sends, according to the VNFD change information, the first signaling for arranging and generating the target NSD model to the NSD management module based on the current NSD of the to-be-updated network service instance to which the VNF instance belongs.

At E205-2, the NSD management module generates a target NSD model according to the first signaling arrangement.

At E205-3, the NSD management module returns the target NSD model orchestration result to the processing module.

At E205-4, the processing module sends the second signaling for updating the NSD of the network service instance to be updated to the network service management module according to the target NSD model.

At E205-5, the network service management module updates the NSD of the network service instance to be updated according to the second information.

At E205-6, the network service management module returns the result of updating the NSD of the network service instance to be updated to the processing module.

At E206, the network service management reports the network service update change notification to the operator or the upper-level system.

Embodiment 3

Fig. 13 is a signaling diagram for updating the NSD of the network service instance to be updated according to the third embodiment.

In the third embodiment, the VNF instance belongs to multiple network service instances to be updated, that is, different network service instances share the VNF instance.

As shown in Figure 13, NFVO includes a VNFD management module, a VNF management module, a collection module, a processing module, an NSD management module, and a network service management module.

Updating the NSD of the network service instance to be updated includes operations E301 to E307.

At E301, the operator or the upper-level system generates the target VNFD through the VNFD management module.

At E302, the operator or the upper-level system updates the VNF instance according to the target VNFD through the VNF management module.

On E303, the VNF management module reports to the collection module that the VNFD of the VNF instance has changed.

At E304, the collection module collects VNFD change information of the VNF instance, and reports the VNFD change information to the processing module.

At E305, operations E305-1 to E305-3 are cyclically performed to orchestrate and generate target NSD models corresponding to respective network services.

At E305-1, the processing module sends, according to the VNFD change information, the first signaling for arranging and generating the target NSD model to the NSD management module based on the current NSD of the to-be-updated network service instance to which the VNF instance belongs.

At E305-2, the NSD management module generates a target NSD model according to the first signaling arrangement.

At E305-3, the NSD management module returns the target NSD model orchestration result to the processing module.

At E306, E306-1 to E306-3 are cyclically executed to update the NSDs of all network services sharing the VNF instance.

At E306-1, the processing module sends the second signaling for updating the NSD of the network service instance to be updated to the network service management module according to the target NSD model.

At E306-2, the network service management module updates the NSD of the network service instance to be updated according to the second information.

At E306-3, the network service management module returns the update result of the NSD of the network service instance to be updated to the processing module.

At E307, the network service management reports the network service update change notification to the operator or the upper-level system.

Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, functional modules/units in the system, and the apparatus can be implemented as software, firmware, hardware, and appropriate combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components Components execute cooperatively. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit . Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules or other data flexible, removable and non-removable media. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or may Any other medium used to store desired information and that can be accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and can include any information delivery media, as is well known to those of ordinary skill in the art .

Example embodiments have been disclosed herein, and although specific terms are employed, they are used and should only be construed in a general descriptive sense and not for purposes of limitation. In some instances, it will be apparent to those skilled in the art that features, characteristics and/or elements described in connection with a particular embodiment may be used alone or in combination with other embodiments, unless expressly stated otherwise. Features and/or elements are used in combination. Accordingly, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the present disclosure as set forth in the appended claims.

Claims

A method for updating a virtualized network service, comprising:

In response to the change of the virtual network function descriptor VNFD of the at least one virtual network function VNF instance, at least one target network service descriptor NSD model is generated according to the VNFD change information of the at least one VNF instance; and

According to the at least one target NSD model, the NSD of at least one to-be-updated network service instance to which the at least one VNF instance belongs is updated.
The update method according to claim 1, wherein the step of generating at least one target NSD model according to the VNFD change information of the at least one VNF instance comprises:

According to the VNFD change information of the at least one VNF instance and the current NSD of each of the at least one network service instance to be updated, the orchestration generates the Target NSD model.
The update method according to claim 2, wherein, according to the at least one target NSD model, the step of updating the NSD of at least one to-be-updated network service instance to which the at least one VNF instance belongs comprises:

According to the at least one target NSD model, the NSD of the network service instance to be updated corresponding to each of the at least one target NSD model is updated respectively.
The update method according to claim 2 or 3, wherein, according to the VNFD change information of the at least one VNF instance and the current NSD of each of the at least one network service instance to be updated, orchestration and generation corresponding to the The step of at least one to-be-updated target NSD model of each of the network service instances includes:

Generate an initial NSD template according to the current NSD of the network service instance to be updated;

The target NSD model corresponding to the to-be-updated network service instance is generated according to the VNFD change information of the at least one VNF instance and the NSD initial template.
The update method of claim 4, wherein the VNFD change information of the at least one VNF instance includes at least one of VNF configuration file change information, associated network change information, and external connection point change information, and

The step of generating the target NSD model according to the VNFD change information of the at least one VNF instance and the NSD template includes at least one of the following steps:

Update the VNFD definition information in the NSD initial template according to the VNF configuration file change information;

Update the virtual link descriptor VLD in the NSD initial template according to the associated network change information;

The routing configuration information in the NSD initial template is updated according to the external connection point change information.
The update method according to claim 5, wherein, according to the at least one target NSD model, the step of updating the NSD of at least one to-be-updated network service instance to which the at least one VNF instance belongs comprises:

According to the target NSD model corresponding to each of the at least one network service instance to be updated, at least one of VNFD definition information, VLD and routing configuration information in the current NSD of the network service instance to be updated is updated .
The update method according to any one of claims 1 to 3, wherein in response to the change of the VNFD of the at least one VNF instance, at least one target NSD model is generated according to the VNFD change information of the at least one VNF instance. Before the steps, also include:

obtaining VNFD change information for the at least one VNF instance; and

The at least one network service instance to be updated is determined according to the VNFD change information of the at least one VNF instance.
The update method according to any one of claims 1 to 3, further comprising:

generating at least one target VNFD; and

The at least one VNF instance is updated according to the at least one target VNFD.
An electronic device comprising:

one or more processors; and

A storage device having one or more programs stored thereon that, when executed by the one or more processors, cause the one or more processors to implement any one of claims 1 to 8 A method for updating the virtualized network service.
A computer-readable medium on which a computer program is stored, and when the computer program is executed by a processor, makes the processor implement the method for updating a virtualized network service according to any one of claims 1 to 8 .