NFV architecture:
VNF and NFVI management system NFV MANO earlier described, including:
• NFVI support virtualization of hardware and software
• VNF orchestration and lifecycle management
MANO architecture:
• VNF: As already described, and is not described here.
• EM (Element Management): for more than one with more VNF management. Note NFVI only provide VNF operating environment, the management of VNF also need to participate in EM.
• VNF Manager (s): As part of NFV MANO, is responsible for life cycle management of VNF. VNF Manager can be multiple.
• NFVI: previously been described.
• VIM (Virtualized Infrastructure Manager): As part of NFV MANO, management support virtualized hardware and software resources. Including rights management, increase information / resource recovery VNF, analysis NFVI failure to collect NFVI and so on. There may be multiple VIM.
• NFV Orchestrator: As part of NFV MANO, management and orchestration NFVI and software resources to achieve Network on NFVI
Service.
OSS • / BSS (Operation Support Systems and
Business Support Systems): Operator existing management systems.
• Service, VNF and Infrastructure Description:
provides data storage management capabilities for NFV MANO, including data VNF
Deployment Template, VNF-FG, Service-Related
Information and NFVI data model.
各个组成部分的连接关系：
• Virtualization Layer - Hardware Resources (Vi-Ha)： 连接 virtualization 层和硬件资源。为VNF创造一个不依赖于硬件资源的运行环境。
• VNF - NFV Infrastructure (Vn-Nf) ： 指的是由NFVI提供的供VNF运行的环境。
• NFV Orchestrator - VNF Manager (Or-Vnfm) ：将配置信息发给VNF manager，进一步由VNF manager控制VNF，使得VNF在VNF-FG中工作。同时收集VNF的信息，以供Network Service声明周期管理。
• Virtualized
Infrastructure Manager - VNF Manager (Vi-Vnfm) ：由于VNF
Manager肩负着VNF的声明周期管理，这个连接是VNF Manager控制VNF资源的接口。同时也收集虚拟化资源配置和状态信息，供VNF使用。
• NFV Orchestrator -
Virtualised Infrastructure Manager (Or-Vi) ：NFV
MANO不是简单的分层的关系，Orchestrator可以直接连接到VIM。这个连接也是资源的分配和保留，收集虚拟化资源的配置和状态信息。
• NFVI - Virtualised
Infrastructure Manager (Nf-Vi) ：具体的虚拟资源分配，同时收集NFVI的虚拟化资源的配置和状态信息。
• OSS/BSS - NFV
Management and Orchestration (Os-Ma) ： OSS/BSS的接入点。
• VNF/EM - VNF
Manager (Ve-Vnfm) ： VNF Manager 管理VNF的接口，包括了VNF的生命周期管理，配置管理，收集VNF的状态信息，以供Network
Service生命周期管理使用。