WO2018001091A1 - 虚拟网络功能vnf更新方法、装置和vnf包 - Google Patents

虚拟网络功能vnf更新方法、装置和vnf包 Download PDF

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WO2018001091A1
WO2018001091A1 PCT/CN2017/088182 CN2017088182W WO2018001091A1 WO 2018001091 A1 WO2018001091 A1 WO 2018001091A1 CN 2017088182 W CN2017088182 W CN 2017088182W WO 2018001091 A1 WO2018001091 A1 WO 2018001091A1
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vnf
software image
package
information
instance
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English (en)
French (fr)
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楚俊生
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中兴通讯股份有限公司
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  • the present disclosure relates to a network function virtualization technology in the field of network communication, and in particular, to a virtual network function VNF update method, apparatus, and VNF package.
  • NFV Network Functions Virtualization
  • NFV network function virtualization
  • FIG 1 is a network function virtualization framework model diagram, as shown in Figure 1, the model diagram includes an Operation Support System (OSS)/Business Support System (BSS) 101, which provides operator operations and Business support functions, including network service (NS) and virtual network function package (VNF package) registration, network service management, performance and exception handling and policy management; among them, VNF package is to describe VNF attributes and The template of the related resource requirements, the VNF package includes the VNF description information (VNFDscript), the software image file, the integrity of the VNF package, and the certificate file.
  • VNFDscript VNF description information
  • the software image is the component of the VNF, that is, the application software to be loaded by the virtualization container.
  • the image management system (EMS) 102 is responsible for application-related configuration, error, billing, performance, and security management of the virtual network function, and updating of the VNF application software;
  • Virtual Network Function (VNF) 103 virtualized network function using virtual computing, storage, and network resources;
  • virtual network function Infrastructure Infrastructure Layer (NFVI) 104 which provides computing, storage, and network infrastructure resources for the deployment of NS instances and VNF instances;
  • Network Function Virtualization Orchestrator (NFVO) 105 responsible for the registration and management of NS and VNF packages, resources Orchestration and lifecycle management of NS instances;
  • Virtual Network Function Manager (VNFM) 106 responsible for instantiation and lifetime management of VNF, and application-independent configuration;
  • Virtual Infrastructure Manager (VIM) 107 responsible for the foundation Control and management of computing, storage, and network resources within the facility domain, and storage and management of image files for VNF package registration.
  • NS, VNF and infrastructure description 108 responsible for the description information record during NS registration, VNF package description information at registration, NS and V
  • the description information of the software image is recorded in the virtual deployment unit of the VNFD. Updating the software image will cause the software image information to change, and further needs the VNFD content to make corresponding changes: if the VNFD is allowed to be modified. If the software image describes the content of the information and keeps the identifier of the VNFD unchanged, there is no guarantee that the VNF provider will modify other information; if the software image of the VNFD is modified to describe the information content, With different VNFD identifiers, there is no guarantee that the registered new VNF package is a software image upgrade package of the original VNF package.
  • the embodiments of the present disclosure are expected to provide a virtual network function (VNF) update method, apparatus, and VNF package, which can update the corresponding software in the VNF package when updating the software image of the VNF instance.
  • VNF virtual network function
  • an embodiment of the present disclosure provides a virtual network function VNF update method, where the method includes:
  • the VNF package is created and registered, and the VNF package is used to update the description of the software image and the software image of the VNF instance;
  • the information of the VNF instance is updated by the VNF manager VNFM.
  • the information of the VNF instance includes description information of the software image and the VNF package identifier.
  • the VNF package includes a VNF package identifier, a VNF descriptor VNFD, a software image, and software image description information.
  • the method before updating the information of the VNF instance by using the VNF manager VNFM, the method further includes:
  • the VNF descriptor VNFD includes: a VNFD identifier and a virtual deployment unit VDU; wherein the VDU includes a software image identifier associated with the VDU.
  • the VNF packet keeps the VNFD identifier and the software image identifier associated with the VDU unchanged.
  • the method further includes:
  • the software image description information includes metadata information describing a software image of the VNF package, where the metadata information of the software image includes: a software image identifier, a version, and a corresponding software image in the VNF package. Location, checksum, container format, disk and random access memory RAM requirements and operating system.
  • an embodiment of the present disclosure provides a virtual network function VNF update apparatus, where the apparatus includes:
  • the registration module is configured to: when the software image of the VNF instance needs to be updated, create and register a VNF package, where the VNF package is used to update the description of the software image and the software image of the VNF instance;
  • the update module is configured to update the information of the VNF instance by the VNF manager VNFM according to the VNF package.
  • the information of the VNF instance includes description information of the software image and the VNF package identifier.
  • the VNF package includes a VNF package identifier, a VNF descriptor VNFD, a software image, and software image description information.
  • the update module is further configured to:
  • the VNF descriptor VNFD includes: a VNFD identifier and a virtual deployment unit VDU; wherein the VDU includes a software image identifier associated with the VDU.
  • the VNF packet keeps the VNFD identifier and the software image identifier associated with the VDU unchanged.
  • the device further includes:
  • a triggering module configured to trigger the EMS to send an update request for updating the VNF instance information to the virtual network function manager VNFM, so that the VNFM completes updating the VNF instance information, where the update request includes the VNF Package ID and VNF instance ID.
  • the software image description information includes metadata information describing a software image of the VNF package, where the metadata information of the software image includes: a software image identifier, a version, and a corresponding software image in the VNF package. Location, checksum, container format, disk and random access memory RAM requirements and operating system.
  • an embodiment of the present disclosure provides a virtual network function VNF package, where the VNF package is used to implement the virtual network function VNF update method according to any one of the preceding claims.
  • an embodiment of the present disclosure provides a storage medium, configured to store program code, where the program code is configured to perform a virtual network function VNF update method according to any one of the preceding claims.
  • the embodiment of the present disclosure provides a virtual network function (VNF) update method, apparatus, and VNF package.
  • VNF virtual network function
  • the VNF package is created and registered, and the VNFM is adopted according to the VNF package.
  • the software image of the VNF instance is updated; wherein the VNF package is used to update the description of the software image and the software image of the VNF instance.
  • the method creates and registers a new VNF package through the OSS when the software image of the VNF instance is updated.
  • the VNF package contains the updated software image, so that the information of updating the VNF instance only needs to update the description of the corresponding software image in the VNF package.
  • the information and the VNF packet are identified, while the VNFD identifier and the corresponding software image identifier in the VNF package are maintained.
  • Figure 1 is a model diagram of a network function virtualization framework
  • FIG. 2 is a schematic flowchart of a VNF update method according to an embodiment of the present disclosure
  • VNF package virtual network function package
  • VNF package virtual network function package
  • VNFD virtual network function descriptor
  • FIG. 6 is a structural diagram of a virtual network function descriptor (VNFD) according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of interaction of an update software image according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of Embodiment 1 of a virtual network function (VNF) updating apparatus according to the present disclosure
  • FIG. 9 is a schematic structural diagram of Embodiment 2 of a virtual network function (VNF) updating apparatus provided by the present disclosure.
  • VNF virtual network function
  • the virtual network function VNF update method provided by the embodiments of the present disclosure is applicable to Network Function Virtualization (NFV) technology, and the ultimate goal of Network Function Virtualization (NFV) technology is to provide on X86 server, storage and switching equipment based on industry standards. Network function, replacing the special equipment provided by traditional telecom equipment manufacturers.
  • the advantage of this is that on the one hand, the cost of IT equipment based on the x86 standard is low, which can save operators huge investment costs; on the other hand, the open API interface can also help operators to open more telecommunications infrastructure. Improve the return on investment (RIO); unified resource scheduling, flexible allocation of resources and deployment of networks to ensure service quality and improve resource utilization efficiency; network scale to achieve rapid and flexible adjustment to meet system dynamics, real-time capacity expansion and capacity reduction requirements.
  • RIO return on investment
  • VNF package Virtualized Network Function Package
  • the virtual resource information, the configuration information, and the software image information required for the virtual network function deployment are registered in the NFV environment in a file, and the deployment, configuration, and software image loading of the VNF are coordinated by the NFVO and the VNFM.
  • the virtual resource information and configuration information are described by a VNF Descriptor (VNFD), such as a virtual deployment unit (VDU), a virtual link, an external connection point, and a VNF deployment specification.
  • VNFD VNF Descriptor
  • VDU virtual deployment unit
  • VNF deployment specification is a deployment requirement that describes a specific VNF capability, such as achieving different VNF capacity and performance requirements.
  • the embodiment of the present disclosure ensures that the VNF package does not affect the VNF descriptor information when the VNF package updates the software image file by placing the description information related to the software image in a separate component of the VNF package, and ensures that the VNF instance is associated with only one VNF description during its lifetime. symbol.
  • FIG. 2 is a schematic flowchart of a VNF update method according to an embodiment of the present disclosure.
  • the execution host OSS of this embodiment includes:
  • Step 101 When the software image of the VNF instance needs to be updated, the VNF package is created and registered, and the VNF package is used to update the description of the software image and the software image of the VNF instance.
  • the OSS first determines whether the software image of the VNF instance needs to be updated. When it is determined that the software image of the VNF instance needs to be updated, the OSS creates and registers a new VNF package, which is described below without special instructions. Hereinafter, it is called VNF package; it should be noted that: before this, OSS has registered a first VNF packet with NFVO, setting the identifier of the first VNF packet to 01, and the VNF descriptor (VNFD) identifier is Id01. The OSS instantiates the VNF instance in the NFV platform based on the first VNF package. The above OSS creates and registers a new one.
  • the VNF package process may be, for example, when the OSS determines that the software image of the VNF instance needs to be updated, first registering the VNF package of the software image with the network NFVO, and the NFVO generates a new VNF package, and the new VNF package is used to update the VNF package.
  • the description of the software image and the software image of the instance and returns the identifier of the VNF packet to the OSS.
  • the VNF packet identifier is 02
  • the identifier of the VNFD is the same as the first VNF identifier.
  • the VNF includes a VNF identifier, a VNFD, a software image, and a software image description information.
  • the software image description information is generally stored in the form of a file, and the metadata information of the software image in the VNF package is described.
  • the metadata format may be XML or JSON. Description and other languages; VNF packages can also include: certificate files, manifest files, other specified files, and so on.
  • FIG. 3 is a structural diagram of a related virtual network function package (VNF package).
  • the related VNF package 201 is a template describing VNF attributes and related resource requirements.
  • the VNF package is generally a file containing metadata description information.
  • VNFD software image files
  • VNF package integrity and certificate files and other special files.
  • the VNF description information (VNFD) 301 is metadata description information of the VNF package, including information related to the VNFD, such as the identifier, version, and equipment vendor, and is generally provided by the VNF provider, and after the VNFD is provided.
  • the software image 212 is the application component of the VNF, that is, the application software to be loaded by the virtualization container, and exists as an image file
  • the certificate file 213 is used to package the integrity of the VNF package, such as based on 64 Bit X.509 certificate encoding
  • manifest file 214 used to record the files contained in the VNF package and its summary information, the abstract is generally based on SHA256, used to ensure the integrity of a single file; other specific files 215, namely VNF package Other additional files related to VNF, such as resource file image ISO files.
  • VNF package virtual network function package
  • the VNF package 501 includes a VNF identifier (not shown), a VNF descriptor (VNFD) 601, and software.
  • the image 512, the software image description information 516, the certificate file 513, the manifest file 514, and other specified files 515 are different from those of FIG. 3.
  • the software image description information 516 is placed in the VNF package, and the software image description information is included. 516 records the metadata information of the image file included in the VNF package.
  • the software image description information 516 can be a software image description file.
  • Step 102 Update the information of the VNF instance by using the VNFM according to the VNF package.
  • the VNFM updates the VNF instance information.
  • the information of the VNF instance is updated by the VNFM. Since the newly registered VNF package includes the updated software image, updating the information of the VNF instance only updates the corresponding software in the VNF package. The description information of the image and the VNF packet identifier remain unchanged while the corresponding software image identifier remains unchanged and the VNF descriptor information in the VNF packet remains unchanged.
  • the VNF update method in this embodiment creates and registers a new VNF package, and updates the software image information of the VNF instance through the VNFM according to the VNF package.
  • the VNF package is used to update the software image and software of the VNF instance. Description of the image.
  • the VNF instance is updated. The information only updates the description information of the corresponding software image and the VNF package identifier in the VNF package, while keeping the corresponding software image identifier unchanged and the VNF descriptor information in the VNF package unchanged, ensuring that the VNF package does not affect the VNF when updating the software image file. Descriptor information.
  • the information of the VNF instance includes description information of the software image and the VNF package identifier.
  • the VNF package includes a VNF package identifier, a VNF descriptor VNFD, a software image, and a software image description information.
  • the VNF Descriptor includes: a VNFD identifier and a virtual deployment unit (VDU); wherein the VDU includes a software image identifier associated with the VDU.
  • FIG. 5 is a structural diagram of a related virtual network function descriptor (VNFD).
  • the VNF Descriptor (VNFD) 301 is a metadata description information of the VNF, and is used to describe the virtual resource and configuration information of the VNF.
  • the identifier 311 of the VNFD is provided by the VNF provider for uniquely identifying the VNF template, and the user can be based on the VNFD.
  • the VNFM and NFVO need to ensure the uniqueness of the content of the VNFD marked by the VNFD identifier.
  • the virtual deployment unit (VDU) 312 is a virtualized container (ie, virtual machine) template that constitutes the VNF, and is mainly used to describe the virtualized container.
  • FIG. 6 is a structural diagram of a virtual network function descriptor (VNFD) according to an embodiment of the present disclosure.
  • VNFD virtual network function descriptor
  • a VNF descriptor (VNFD) 601 includes a VNFD identifier 611 and a virtual deployment unit (VDU) 612, where the VDU 612 includes a software image identifier 620.
  • the VNFD 601 further includes description information such as a connection point 613, a virtual link (VL) 614, and a VNF deployment specification 615.
  • the VNFD 601 puts the software image description information in the VNF
  • the VDU 612 includes the software image identifier 620
  • the VDU 612 refers to the software image identifier 620 to be loaded
  • the software image file to be loaded by the virtual deployment unit is set.
  • the reference identifier of the software image file in the VNF package so that the content of the VNFD will not be affected by the updated software image file as long as the identifier of the corresponding software image file in the VNF package is unchanged.
  • the method before updating the software image information of the VNF instance by using the VNF manager VNFM, the method further includes:
  • the OSS interacts with the EMS, and updates the software image of the VNF instance through the EMS according to the software image of the newly created VNF package and the description information of the software image.
  • the software image identifier corresponding to the VNFD identifier and the VNFD identifier is unchanged. Since the software image of the VNF instance is updated, only the corresponding software image and the corresponding software image description file in the VNF package are updated, so that the corresponding software image identifier is unchanged and the VNF descriptor information in the VNF package is unchanged.
  • the VNF packet keeps the VNFD identifier and the software image identifier associated with the VDU unchanged.
  • the software image of the VNF package and the description information of the software image are used by the network element tube.
  • the system EMS further includes:
  • the VNFM needs to be notified to update the VNF instance information corresponding to the software image.
  • the OSS triggers the EMS to request the VNFM to update the VNF instance information, where the update request carries the VNF package 02 identifier and the VNFD 01. logo.
  • FIG. 7 is a schematic diagram of interaction of an updated software image according to an embodiment of the present disclosure; as shown in FIG. 7, the interaction process includes:
  • the OSS registers the VNF package with the NFVO, and the NFVO returns the VNF package identifier VNF packet 01 to the OSS after completing the registration of the VNF package;
  • the OSS requests the NFVO to instantiate the VNF according to the VNF package 01, and the NFVO interacts with the VNFM to create the VNF instance 01;
  • the OSS determines that the image file of the VNF instance 01 needs to be updated, for example, the image file has a potential bug, or provides new functional features.
  • OSS creates a new VNF package, which updates the description file of the software image file and the software image, and registers the VNF package with NFVO.
  • the VNFD information contained in the VNF packet is consistent with the VNFD information in the original VNF packet, and the NFVO returns the VNF packet 02 identifier to the OSS after completing the registration of the VNF packet;
  • the OSS interacts with the EMS to update the software image of the VNF instance, and the EMS updates the software image in the VNF instance.
  • the EMS After completing the software image update of the VNF instance, the EMS requests the VNFM to update the VNF instance information, where the VNF packet 02 identifier and the VNF instance 01 identifier are carried.
  • the VNFM queries the NFVO for the VNF packet 02 information according to the VNF packet 02 identifier.
  • the VNFM records the queried VNF packet 02 information into the information of the VNF instance.
  • the VNFM returns a message that the VNF instance information is completed to the EMS.
  • the OSS interacts with the EMS.
  • the OSS registers a new VNF package, and the VNF package includes the software image description information, and the OSS and the EMS exchange request to update the software of the VNF instance.
  • Update of the image wherein updating the software image of the VNF package only needs to update the corresponding software image in the VNF package and the description file of the corresponding software image, while keeping the corresponding software image identifier unchanged and the VNF descriptor information in the VNF package unchanged. Ensure that the VNF package updates the software image file without affecting the VNF descriptor information.
  • the software image description information includes metadata information describing a software image of the VNF package, where the metadata information of the software image includes: a software image identifier, a version, and a corresponding software image in the VNF package. Location, checksum, container format, disk and random access memory (RAM) requirements, and operating system.
  • the metadata information of the software image includes at least an identifier, a version of the software image, a location of the corresponding software image in the VNF package, a checksum, a container format, a minimum disk and RAM requirement, and an operating system;
  • the identifier of the software image uniquely identifies the software image in the VNF package.
  • FIG. 8 is a schematic structural diagram of Embodiment 1 of a virtual network function (VNF) updating apparatus according to the present disclosure. As shown in FIG. 8, the apparatus includes:
  • the registration module 11 is configured to: when the software image of the VNF instance needs to be updated, create and register a VNF package, where the VNF package is used to update the description of the software image and the software image of the VNF instance;
  • the update module 12 is configured to update the information of the VNF instance by using the VNFM according to the VNF package.
  • the VNF update device in this embodiment is an embodiment of the device corresponding to the first embodiment of the VNF update method, and the principle is similar, and details are not described herein again.
  • the VNF update device of the present embodiment creates and registers a new VNF package through the registration module, and the update module updates the software image information of the VNF instance through the VNFM according to the VNF package, where the VNF package is used to update the VNF instance. Description of the software image and software image.
  • the device by placing the software image information related to the software image in a separate component of the VNF package, since the newly registered VNF package contains the updated software image, updating the VNF instance information only updates the corresponding VNF package.
  • the description information of the software image and the VNF package identifier are maintained, and the corresponding software image identifier remains unchanged and the VNF descriptor information in the VNF package is unchanged, so that the VNF package does not affect the VNF descriptor information when updating the software image file. .
  • the information of the VNF instance includes description information of the software image and the VNF package identifier.
  • the VNF package includes a VNF package identifier, a VNF descriptor VNFD, a software image, and a software image description information.
  • the updating module 12 is further configured to: interact with the network element management system EMS, and use the network element management system EMS to perform the VNF instance according to the software image of the VNF package and the description information of the software image.
  • the software image is updated.
  • the VNF descriptor VNFD includes: a VNFD identifier and a virtual deployment unit (VDU); wherein the VDU includes a software image identifier associated with the VDU.
  • VDU virtual deployment unit
  • FIG. 9 is a schematic structural diagram of Embodiment 2 of a virtual network function VNF updating apparatus according to the present disclosure. As shown in FIG. 9, the apparatus further includes:
  • the triggering module 13 is configured to trigger the EMS to send an update request for updating the VNF instance information to the virtual network function manager VNFM, so that the VNFM completes updating the VNF instance information, where the update request includes the VNF package identifier and VNF instance identifier.
  • the software image description information includes metadata information describing a software image of the VNF package, where the metadata information of the software image includes: a software image identifier, a version, and a corresponding software image in the VNF package. Location, checksum, container format, disk and random access memory (RAM) requirements, and operating system.
  • the embodiment of the present disclosure further provides a VNF package, and the VNF package is used to implement the foregoing method.
  • the structure of the VNF package is shown in FIG. 4, and its structure has been described in detail in the foregoing FIG. 4, and details are not described herein again.
  • the registration module 11, the update module 12, and the trigger module 13 may all be located in the terminal.
  • 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 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 virtual network function VNF update method, apparatus, and VNF package provided by the embodiments of the present disclosure maintain the VNFD identifier in the VNF package by updating only the description information of the corresponding software image in the VNF package when updating the software image of the VNF instance. And the corresponding software image identifiers are unchanged, which can save operators huge investment costs, help operators to open more telecommunications basic network capabilities, improve return on investment (RIO); unified resource scheduling, flexible allocation of resources and deployment of networks, Ensure service quality and improve resource utilization efficiency; network scale can be quickly and flexibly adjusted to meet system dynamics, real-time capacity expansion and capacity reduction requirements.

Abstract

本公开实施例公开一种虚拟网络功能(VNF)更新方法，所述方法包括：当需要对VNF实例的软件镜像进行更新时，创建并注册VNF包，所述VNF包用于更新所述VNF实例的软件镜像和软件镜像的描述信息；根据所述VNF包，通过VNF管理器(VNFM)对所述VNF实例的信息进行更新。本公开实施例还公开一种虚拟网络功能(VNF)更新装置和VNF包。图2

Description

虚拟网络功能VNF更新方法、装置和VNF包 技术领域
本公开涉及网络通信领域的网络功能虚拟化技术，尤其涉及一种虚拟网络功能VNF更新方法、装置和VNF包。
背景技术
随着通讯网络功能和业务的发展，网络中部署的各种类型的网元也越来越多。网元类型和数量的增加随之带来了很多问题，诸如平台种类繁多，维护复杂；硬件无共享，资源浪费等。因此，为了提高通讯网络的灵活性，降低管理成本，由运营商发起提出了网络功能虚拟化(Network Functions Virtualization，NFV)概念，网络功能虚拟化(NFV)通过在基于行业标准的X86服务器、存储和交换设备上提供网络功能，取代传统电信设备制造商所提供的专用设备。在使用NFV技术的情况下，原来的物理网元设备由虚拟网络功能(Virtualized Network Function，VNF)代替，使得网络功能与具体硬件解耦。
图1为网络功能虚拟化框架模型图，如图1所示，该模型图中包括运营支撑系统(Operation support system，OSS)/业务支撑系统(Business support system，BSS)101，提供运营商操作和业务的支持功能，包括网络服务(Network Service，NS)和虚拟网络功能包(VNF包)的注册，网络服务的管理，性能和异常的处理和策略管理等；其中，VNF包是描述VNF属性和相关资源需求的模板，VNF包包含VNF描述信息(VNF Descriptor，VNFD)、软件镜像文件、VNF包的完整性和证书文件等，软件镜像是VNF所包含的成份即虚拟化容器要加载的应用软件，以镜像文件的方式存在；网元管理系统(Element Management System，EMS)102，负责虚拟网络功能的应用相关的配置、错误、计费、性能和安全方面的管理，VNF应用软件的更新等；虚拟网络功能(VNF)103，使用虚拟计算、存储和网络资源实现虚拟化的网络功能；网络功能虚拟化基础设施层(NFVI)104，负责为NS实例和VNF实例的部署提供计算、存储和网络基础设施资源；网络功能虚拟化编排器(NFVO)105，负责NS和VNF包的注册和管理，资源编排和NS实例的生命期管理等；虚拟网络功能管理器(VNFM)106，负责对VNF的实例化和生命期管理，以及应用无关的配置；虚拟基础设施管理器(VIM)107，负责对基础设施域内的计算、存储和网络资源的控制和管理，以及VNF包注册时镜像文件的存放和管理。NS，VNF和基础设施描述108，负责NS注册时的描述信息记录，VNF包在注册时描述信息，NS和VNF实例信息，以及NFVI资源状态信息等。
根据相关的网络功能虚拟化规范，软件镜像的描述信息是记录在VNFD的虚拟部署单元里，更新软件镜像则会引起软件镜像信息的变化，进一步需要VNFD的内容做相应的变化：如果允许修改VNFD的软件镜像描述信息内容而保持VNFD的标识不变，则无法保证VNF提供商会修改其他信息的可能；如果修改VNFD的软件镜像描述信息内容后 采用不同的VNFD标识，则无法保证注册的新的VNF包是原VNF包的软件镜像升级包。
发明内容
为解决上述技术问题，本公开实施例期望提供一种虚拟网络功能(VNF)更新方法、装置和VNF包，该方法能够在对VNF实例的软件镜像更新时，只需更新VNF包中对应的软件镜像的描述信息，而保持VNF包中的VNFD标识和对应的软件镜像标识不变。
本公开的技术方案是这样实现的：
第一方面，本公开实施例提供了一种虚拟网络功能VNF更新方法，所述方法包括：
当需要对VNF实例的软件镜像进行更新时，创建并注册VNF包，所述VNF包用于更新所述VNF实例的软件镜像和软件镜像的描述信息；
根据所述VNF包，通过VNF管理器VNFM对所述VNF实例的信息进行更新。
在上述方案中，所述VNF实例的信息包括软件镜像的描述信息和所述VNF包标识。
在上述方案中，所述VNF包包括VNF包标识、VNF描述符VNFD、软件镜像和软件镜像描述信息。
在上述方案中，所述根据所述VNF包，通过VNF管理器VNFM对所述VNF实例的信息进行更新之前，还包括：
与网元管理系统EMS进行交互，根据所述VNF包的软件镜像和所述软件镜像的描述信息，通过网元管理系统EMS对所述VNF实例的软件镜像进行更新。
在上述方案中，所述VNF描述符VNFD包括：VNFD标识和虚拟部署单元VDU；其中，所述VDU包括所述VDU关联的软件镜像标识。
在上述方案中，所述VNF包保持所述VNFD标识和所述VDU关联的软件镜像标识不变。
在上述方案中，所述根据所述VNF包的软件镜像和所述软件镜像的描述信息，通过网元管理系统EMS对所述VNF实例的软件镜像进行更新之后，还包括：
触发所述EMS向虚拟网络功能管理器VNFM发送更新所述VNF实例信息的更新请求，以使所述VNFM完成对所述VNF实例信息的更新，所述更新请求包括所述VNF包标识和VNF实例标识。
在上述方案中，所述软件镜像描述信息包括描述所述VNF包的软件镜像的元数据信息，其中，所述软件镜像的元数据信息包括：软件镜像标识、版本、对应软件镜像在VNF包内的位置、校验和、容器格式、磁盘和随机存取存储器RAM需求和操作系统。
第二方面，本公开实施例提供了一种虚拟网络功能VNF更新装置，所述装置包括：
注册模块，设置为当需要对VNF实例的软件镜像进行更新时，创建并注册VNF包，所述VNF包用于更新所述VNF实例的软件镜像和软件镜像的描述信息；
更新模块，设置为根据所述VNF包，通过VNF管理器VNFM对所述VNF实例的信息进行更新。
在上述方案中，所述VNF实例的信息包括软件镜像的描述信息和所述VNF包标识。
在上述方案中，所述VNF包包括VNF包标识、VNF描述符VNFD、软件镜像和软件镜像描述信息。
在上述方案中，所述更新模块还设置为：
与网元管理系统EMS进行交互，根据所述VNF包的软件镜像和所述软件镜像的描述信息，通过网元管理系统EMS对所述VNF实例的软件镜像进行更新。
在上述方案中，所述VNF描述符VNFD包括：VNFD标识和虚拟部署单元VDU；其中，所述VDU包括所述VDU关联的软件镜像标识。
在上述方案中，所述VNF包保持所述VNFD标识和所述VDU关联的软件镜像标识不变。
在上述方案中，所述装置还包括：
触发模块，设置为触发所述EMS向虚拟网络功能管理器VNFM发送更新所述VNF实例信息的更新请求，以使所述VNFM完成对所述VNF实例信息的更新，所述更新请求包括所述VNF包标识和VNF实例标识。
在上述方案中，所述软件镜像描述信息包括描述所述VNF包的软件镜像的元数据信息，其中，所述软件镜像的元数据信息包括：软件镜像标识、版本、对应软件镜像在VNF包内的位置、校验和、容器格式、磁盘和随机存取存储器RAM需求和操作系统。
第三方面，本公开实施例提供了一种虚拟网络功能VNF包，所述VNF包用于实现如上任一项所述的虚拟网络功能VNF更新方法。
第四方面，本公开实施例提供了一种存储介质，设置为存储程序代码，所述程序代码设置为执行如上任一项所述的虚拟网络功能VNF更新方法。
本公开实施例提供了一种虚拟网络功能(VNF)更新方法、装置和VNF包，该方法当需要对VNF实例的软件镜像进行更新时，创建并注册VNF包，并根据该VNF包，通过VNFM对VNF实例的软件镜像进行更新；其中，VNF包用于更新VNF实例的软件镜像和软件镜像的描述信息。该方法在VNF实例的软件镜像有更新时，通过OSS创建并注册新的VNF包，该VNF包包含更新的软件镜像，从而使得更新VNF实例的信息只需更新VNF包中对应的软件镜像的描述信息和VNF包标识，而保持VNF包中的VNFD标识和对应的软件镜像标识不变。
附图说明
图1为网络功能虚拟化框架模型图；
图2为本公开实施例提供的VNF更新方法的流程示意图；
图3为相关的虚拟网络功能包(VNF包)结构图；
图4为本公开实施例提供的虚拟网络功能包(VNF包)的结构图；
图5为相关的虚拟网络功能描述符(VNFD)的结构图；
图6为本公开实施例提供的虚拟网络功能描述符(VNFD)的结构图；
图7为本公开实施例提供的更新软件镜像的交互示意图；
图8为本公开提供的虚拟网络功能(VNF)更新装置实施例一的结构示意图；
图9为本公开提供的虚拟网络功能(VNF)更新装置实施例二的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述。
本公开实施例提供的虚拟网络功能VNF更新方法适用于网络功能虚拟化(NFV)技术，网络功能虚拟化(NFV)技术的最终目标是通过在基于行业标准的X86服务器、存储和交换设备上提供网络功能，取代传统电信设备制造商所提供的专用设备。由此带来的好处是，一方面基于x86标准的IT设备成本低廉，能够为运营商节省巨大的投资成本；另一方面开放的API接口，也能帮助运营商开放更多的电信基础网络能力，提高投资回报率(RIO)；资源统一调度，灵活分配资源和部署网络，确保服务质量，提升资源利用效率；网络规模实现快速、灵活的调整，满足系统动态、实时扩容和缩容需求。
电信运营商在采用虚拟化和云计算等IT技术实现网络功能虚拟化的同时，也希望能够提供快捷的方式，加快业务的部署时间，如提供虚拟网络功能包(Virtualised Network Function Package，VNF包)一次性将虚拟网络功能部署所需的虚拟资源信息、配置信息和软件镜像信息以文件的方式注册到NFV环境中，由NFVO和VNFM协调完成VNF的部署、配置和软件镜像的加载，所述的虚拟资源信息和配置信息采用VNF描述符(VNFD)描述，如包含的虚拟部署单元(VDU)、虚拟链路、对外的连接点和VNF部署规格等信息。VNF部署规格是描述特定VNF能力的部署需求，如实现不同VNF容量和性能等方面的要求。
本公开实施例通过将与软件镜像相关的描述信息放在VNF包的单独组件里，保证VNF包更新软件镜像文件时不影响VNF描述符信息，确保VNF实例在其生命期内只关联一个VNF描述符。
图2为本公开实施例提供的VNF更新方法的流程示意图，如图2所示，本实施例的执行主体OSS，为该方法包括：
步骤101：当需要对VNF实例的软件镜像进行更新时，创建并注册VNF包，VNF包用于更新VNF实例的软件镜像和软件镜像的描述信息。
在本步骤中，OSS首先判断是否需要对VNF实例的软件镜像进行更新，当判断出需要对VNF实例的软件镜像进行更新时，OSS创建并注册一个新的VNF包，下面在无特殊说明的情况下，均称为VNF包；需要说明的是：在此之前，OSS已经向NFVO注册了一个第一VNF包，设该第一VNF包的标识符为01，VNF描述符(VNFD)标识为Id01，OSS基于该第一VNF包在NFV平台中实例化VNF实例。上述OSS创建并注册一个新的 VNF包的过程例如可以为：当OSS确定需要更新VNF实例的软件镜像，则首先向网NFVO注册更新了软件镜像的VNF包，NFVO生成一个新的VNF包，该新的VNF包用于更新VNF实例的软件镜像和软件镜像的描述信息，并向OSS返回VNF包的标识，例如该VNF包标识为02，且VNFD的标识与第一VNF标识一样为Id01。该VNF包括VNF标识、VNFD、软件镜像和软件镜像描述信息；其中，软件镜像描述信息一般以文件的形式存储，其描述VNF包内软件镜像的元数据信息，其元数据格式可以采用XML、JSON描述等语言；VNF包还可以包括：证书文件、清单文件、其他指定文件等。
图3为相关的虚拟网络功能包(VNF包)结构图，如图3所示，相关的VNF包201是描述VNF属性和相关资源需求的模板，VNF包一般是一个文件，包含元数据描述信息VNFD、软件镜像文件、VNF包的完整性和证书文件、以及其他特殊的文件等。在该VNF包的结构图中，VNF描述信息(VNFD)301是VNF包的元数据描述信息，包括标识、版本、设备商等与VNFD相关的信息，一般是有VNF提供商提供，VNFD提供后不允许再进行修改；软件镜像212，是VNF所包含的成份即虚拟化容器要加载的应用软件，以镜像文件的方式存在；证书文件213，用于包装VNF包的完整性，如采用基于64位的X.509证书编码；清单文件214，用于记录VNF包所包含的文件及其摘要信息，摘要一般基于SHA256，用于保证单个文件的完整性；其他特定文件215，即VNF包所包含的与VNF相关的其他附加文件，如资源文件镜像ISO文件等。
图4为本公开实施例提供的虚拟网络功能包(VNF包)的结构图，如图4所示，VNF包501包括VNF标识(图中未示出)、VNF描述符(VNFD)601、软件镜像512、软件镜像描述信息516、证书文件513、清单文件514以及其他指定文件515等，与图3不同的是，本实施例中将软件镜像描述信息516放在VNF包中，软件镜像描述信息516记录VNF包内包含的镜像文件元数据信息，更新VNF包的镜像文件后，需要同时更新软件镜像描述文件中对应的镜像文件的元数据信息，如软件镜像在VNF包内的位置，校验和，容器格式，最小磁盘和RAM需求等。其中，软件镜像描述信息516可以为软件镜像描述文件。
步骤102：根据VNF包，通过VNFM对VNF实例的信息进行更新。
在本步骤中，OSS创建上述VNF包后，通过VNFM完成VNF实例的信息的更新。可选的，根据步骤101新注册的VNF包，通过VNFM更新VNF实例的信息，由于新注册的VNF包中包含了更新的软件镜像，因此，更新VNF实例的信息只更新VNF包中对应的软件镜像的描述信息以及VNF包标识，而保持对应软件镜像标识不变和VNF包中的VNF描述符信息不变。
本实施例的VNF更新方法，创建并注册新的VNF包，并根据该VNF包，通过VNFM对VNF实例的软件镜像信息进行更新；其中，VNF包用于更新所述VNF实例的软件镜像和软件镜像的描述信息。该方法中，通过将与软件镜像相关的软件镜像信息放在VNF包的单独组件里，由于新注册的VNF包中包含了更新的软件镜像，因此，更新VNF实例 的信息只更新VNF包中对应的软件镜像的描述信息和VNF包标识，而保持对应软件镜像标识不变和VNF包中的VNF描述符信息不变，保证VNF包更新软件镜像文件时不影响VNF描述符信息。
可选的，所述VNF实例的信息包括软件镜像的描述信息和所述VNF包标识。
可选的，所述VNF包包括VNF包标识、VNF描述符VNFD、软件镜像和软件镜像描述信息。
可选的，所述VNF描述符(VNFD)包括：VNFD标识和虚拟部署单元(VDU)；其中，所述VDU包括所述VDU关联的软件镜像标识。
图5为相关的虚拟网络功能描述符(VNFD)的结构图。VNF描述符(VNFD)301是VNF的元数据描述信息，用于描述部署VNF的虚拟资源和配置信息等；VNFD的标识311，是VNF提供商提供的用于唯一标识VNF模板，用户可以基于VNFD标识创建VNF实例，VNFM和NFVO需要保证VNFD标识标记的VNFD的内容唯一性；虚拟部署单元(VDU)312，是构成VNF的虚拟化容器(即虚拟机)模板，主要是描述虚拟化容器所需的计算、内存和存储等虚拟资源信息，以及要加载的软件镜像描述信息；连接点313，描述VNF对外的接口或接入点信息；虚拟链路314描述VNF内部虚拟化容器和虚拟化存储之间的虚拟网络信息；VNF部署规格315，描述VNF各种规格及其对应的资源配置信息。图6为本公开实施例提供的虚拟网络功能描述符(VNFD)的结构图，如图6所示，VNF描述符(VNFD)601包含VNFD标识611和虚拟部署单元(VDU)612，其中，VDU 612包括软件镜像标识620，VNFD 601还包括：连接点613、虚拟链路(VL)614和VNF部署规格615等描述信息。与图3不同的是，VNFD 601将软件镜像描述信息放在VNF里面了，VDU 612包括软件镜像标识620，VDU 612参考要加载的软件镜像标识620，设置虚拟部署单元要加载的软件镜像文件为该软件镜像文件在VNF包内的参考标识，这样只要保证VNF包内对应软件镜像文件更新后的标识不变，VNFD的内容将不受更新软件镜像文件的影响。
可选的，所述根据所述VNF包，通过VNF管理器VNFM对所述VNF实例的软件镜像信息进行更新之前，还包括：
与网元管理系统EMS进行交互，根据所述VNF包的软件镜像和所述软件镜像的描述信息，通过网元管理系统EMS对所述VNF实例的软件镜像进行更新。
可选的，在VNFM对VNF实例信息进行更新之前，OSS与EMS进行交互，根据上述新建的VNF包的软件镜像和该软件镜像的描述信息，通过EMS对VNF实例的软件镜像进行更新，并保持所述VNFD标识和所述VNFD标识对应的软件镜像标识不变。由于更新VNF实例的软件镜像只需更新VNF包中对应软件镜像和对应软件镜像的描述文件，因而保证对应的软件镜像标识不变和VNF包中的VNF描述符信息不变。
可选的，所述VNF包保持所述VNFD标识和所述VDU关联的软件镜像标识不变。
可选的，所述根据所述VNF包的软件镜像和所述软件镜像的描述信息，通过网元管 理系统EMS对所述VNF实例的软件镜像进行更新之后，还包括：
触发所述EMS向虚拟网络功能管理器VNFM发送更新所述VNF实例信息的更新请求，以使所述VNFM完成对所述VNF实例信息的更新，所述更新请求包括所述VNF包标识和VNF实例标识。
可选的，在更新完VNF实例的软件镜像后，需要通知VNFM更新软件镜像对应的VNF实例信息，OSS触发EMS向VNFM请求更新VNF实例信息，其中更新请求携带上使用VNF包02标识和VNFD 01标识。
图7为本公开实施例提供的更新软件镜像的交互示意图；如图7所示，该交互流程包括：
701，OSS向NFVO注册VNF包，NFVO完成VNF包的注册后向OSS返回VNF包标识VNF包01；
702，OSS根据VNF包01向NFVO请求实例化VNF，NFVO与VNFM交互创建VNF实例01；
703，OSS判断需要对VNF实例01的镜像文件进行更新，比如镜像文件存在潜在的bug，或者提供新的功能特性；
704，OSS创建一个新的VNF包，其中更新了软件镜像文件和软件镜像的描述文件，并向NFVO进行VNF包的注册。该VNF包中包含的VNFD信息与原VNF包中的VNFD信息保持一致，NFVO完成VNF包的注册后向OSS返回VNF包02标识；
705，OSS与EMS交互请求更新VNF实例的软件镜像，EMS对VNF实例中的软件镜像进行更新；
706，EMS在完成VNF实例的软件镜像更新后，向VNFM请求更新VNF实例信息，其中携带VNF包02标识和VNF实例01标识；
707，VNFM根据VNF包02标识向NFVO查询VNF包02信息。
708，VNFM将查询到的VNF包02信息记录到VNF实例的信息中。
709，VNFM向EMS返回更新VNF实例信息完成的消息。
本实施例中，通过OSS与EMS进行交互，在需要更新VNF实例的软件镜像时，OSS注册新的VNF包，该VNF包包括了软件镜像描述信息，OSS与EMS交互请求更新完成VNF实例的软件镜像的更新；其中，更新VNF包的软件镜像只需更新VNF包中对应的软件镜像和对应软件镜像的描述文件，而保持对应软件镜像标识不变和VNF包中的VNF描述符信息不变，保证VNF包更新软件镜像文件时不影响VNF描述符信息。
可选的，所述软件镜像描述信息包括描述所述VNF包的软件镜像的元数据信息，其中，所述软件镜像的元数据信息包括：软件镜像标识、版本、对应软件镜像在VNF包内的位置、校验和、容器格式、磁盘和随机存取存储器(RAM)需求和操作系统。
可选的，所述软件镜像的元数据信息至少包含软件镜像的标识、版本、对应软件镜像在VNF包内的位置、校验和、容器格式、最小磁盘和RAM需求和操作系统等信息；其 中，软件镜像的标识唯一标识VNF包内的软件镜像。
图8为本公开提供的虚拟网络功能(VNF)更新装置实施例一的结构示意图，如图8所示，所述装置包括：
注册模块11，设置为当需要对VNF实例的软件镜像进行更新时，创建并注册VNF包，所述VNF包用于更新所述VNF实例的软件镜像和软件镜像的描述信息；
更新模块12，设置为根据所述VNF包，通过VNFM对所述VNF实例的信息进行更新。
本实施例的VNF更新装置是与VNF更新方法实施例一对应的装置实施例，其原理类似，此处不再赘述。
本实施例的VNF更新装置，通过注册模块创建并注册新的VNF包，更新模块根据该VNF包，通过VNFM对VNF实例的软件镜像信息进行更新，其中，VNF包用于更新所述VNF实例的软件镜像和软件镜像的描述信息。该装置中，通过将与软件镜像相关的软件镜像信息放在VNF包的单独组件里，由于新注册的VNF包中包含了更新的软件镜像，因此，更新VNF实例信息只更新VNF包中对应的软件镜像的描述信息和VNF包标识，而保持对应软件镜像标识不变和VNF包中的VNF描述符信息不变，保证VNF包更新软件镜像文件时不影响VNF描述符信息。。
可选的，所述VNF实例的信息包括软件镜像的描述信息和所述VNF包标识。
可选的，所述VNF包包括VNF包标识、VNF描述符VNFD、软件镜像和软件镜像描述信息。
可选的，所述更新模块12还设置为：与网元管理系统EMS进行交互，根据所述VNF包的软件镜像和所述软件镜像的描述信息，通过网元管理系统EMS对所述VNF实例的软件镜像进行更新。
可选的，所述VNF描述符VNFD包括：VNFD标识和虚拟部署单元(VDU)；其中，所述VDU包括所述VDU关联的软件镜像标识。
图9为本公开提供的虚拟网络功能VNF更新装置实施例二的结构示意图，如图9所示，所述装置还包括：
触发模块13，设置为触发所述EMS向虚拟网络功能管理器VNFM发送更新所述VNF实例信息的更新请求，以使所述VNFM完成对所述VNF实例信息的更新，所述更新请求包括所述VNF包标识和VNF实例标识。
可选的，所述软件镜像描述信息包括描述所述VNF包的软件镜像的元数据信息，其中，所述软件镜像的元数据信息包括：软件镜像标识、版本、对应软件镜像在VNF包内的位置、校验和、容器格式、磁盘和随机存取存储器(RAM)需求和操作系统。
本公开实施例还提供一种VNF包，所述VNF包用于实现上述方法。该VNF包的结构如图4所示，其结构在前面图4部分已进行详细描述，此处不再赘述。
在实际应用中，所述注册模块11、更新模块12和触发模块13均可由位于终端的中 央处理器(CPU)、微处理器(MPU)、数字信号处理器(DSP)、或现场可编程门阵列(FPGA)等实现。
本领域内的技术人员应明白，本公开的实施例可提供为方法、系统、或计算机程序产品。因此，本公开可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述，仅为本公开的较佳实施例而已，并非用于限定本公开的保护范围。
工业实用性
本公开实施例提供的虚拟网络功能VNF更新方法、装置和VNF包，通过在对VNF实例的软件镜像更新时，只更新VNF包中对应的软件镜像的描述信息，而保持VNF包中的VNFD标识和对应的软件镜像标识不变，可以为运营商节省巨大的投资成本，帮助运营商开放更多的电信基础网络能力，提高投资回报率(RIO)；资源统一调度，灵活分配资源和部署网络，确保服务质量，提升资源利用效率；网络规模实现快速、灵活的调整，满足系统动态、实时扩容和缩容需求。

Claims (18)

  1. 一种虚拟网络功能VNF更新方法，包括：
    当需要对VNF实例的软件镜像进行更新时，创建并注册VNF包，所述VNF包用于更新所述VNF实例的软件镜像和软件镜像的描述信息；
    根据所述VNF包，通过VNF管理器VNFM对所述VNF实例的信息进行更新。
  2. 根据权利要求1所述的方法，其中，所述VNF实例的信息包括软件镜像的描述信息和所述VNF包标识。
  3. 根据权利要求1或2所述的方法，其中，所述VNF包包括VNF包标识、VNF描述符VNFD、软件镜像和软件镜像描述信息。
  4. 根据权利要求3所述的方法，其中，所述根据所述VNF包，通过VNF管理器VNFM对所述VNF实例的信息进行更新之前，还包括：
    与网元管理系统EMS进行交互，根据所述VNF包的软件镜像和所述软件镜像的描述信息，通过网元管理系统EMS对所述VNF实例的软件镜像进行更新。
  5. 根据权利要求1所述的方法，其中，所述VNF描述符VNFD包括：VNFD标识和虚拟部署单元VDU；其中，所述VDU包括所述VDU关联的软件镜像标识。
  6. 根据权利要求1所述的方法，其中，所述VNF包保持所述VNFD标识和所述VDU关联的软件镜像标识不变。
  7. 根据权利要求4所述的方法，其中，所述根据所述VNF包的软件镜像和所述软件镜像的描述信息，通过网元管理系统EMS对所述VNF实例的软件镜像进行更新之后，还包括：
    触发所述EMS向虚拟网络功能管理器VNFM发送更新所述VNF实例信息的更新请求，以使所述VNFM完成对所述VNF实例信息的更新，所述更新请求包括所述VNF包标识和VNF实例标识。
  8. 根据权利要求3所述的方法，其中，所述软件镜像描述信息包括描述所述VNF包的软件镜像的元数据信息，其中，所述软件镜像的元数据信息包括：软件镜像标识、版本、对应软件镜像在VNF包内的位置、校验和、容器格式、磁盘和随机存取存储器RAM需求和操作系统。
  9. 一种虚拟网络功能VNF更新装置，包括：
    注册模块，设置为当需要对VNF实例的软件镜像进行更新时，创建并注册VNF包，所述VNF包用于更新所述VNF实例的软件镜像和软件镜像的描述信息；
    更新模块，设置为根据所述VNF包，通过VNF管理器VNFM对所述VNF实例的信息进行更新。
  10. 根据权利要求9所述的装置，其中，所述VNF实例的信息包括软件镜像的描述信息和所述VNF包标识。
  11. 根据权利要求9或10所述的装置，其中，所述VNF包包括VNF包标识、VNF 描述符VNFD、软件镜像和软件镜像描述信息。
  12. 根据权利要求11所述的装置，其中，所述更新模块还设置为：
    与网元管理系统EMS进行交互，根据所述VNF包的软件镜像和所述软件镜像的描述信息，通过网元管理系统EMS对所述VNF实例的软件镜像进行更新。
  13. 根据权利要求9所述的装置，其中，所述VNF描述符VNFD包括：VNFD标识和虚拟部署单元VDU；其中，所述VDU包括所述VDU关联的软件镜像标识。
  14. 根据权利要求9所述的装置，其中，所述VNF包保持所述VNFD标识和所述VDU关联的软件镜像标识不变。
  15. 根据权利要求12所述的装置，其中，所述装置还包括：
    触发模块，设置为触发所述EMS向虚拟网络功能管理器VNFM发送更新所述VNF实例信息的更新请求，以使所述VNFM完成对所述VNF实例信息的更新，所述更新请求包括所述VNF包标识和VNF实例标识。
  16. 根据权利要求11所述的装置，其中，所述软件镜像描述信息包括描述所述VNF包的软件镜像的元数据信息，其中，所述软件镜像的元数据信息包括：软件镜像标识、版本、对应软件镜像在VNF包内的位置、校验和、容器格式、磁盘和随机存取存储器RAM需求和操作系统。
  17. 一种虚拟网络功能VNF包，其中，所述VNF包用于实现权利要求1～8任一项所述的方法。
  18. 一种存储介质，设置为存储程序代码，所述程序代码设置为执行权利要求1～8中任一项所述的方法。
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