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J. R. Prasad et al.
1. Virtualization
2. Softwarization
3. Orchestration and Automation.
The NFV architecture is briefly categorized into 3 parts they are the:
1. Network Function Virtualization Infrastructure (NFVI)
2. Virtualized Network Functions (VNF)
3. Management and Network Orchestration.
Network Function Virtualization Infrastructure (NFVI):
It is like the cloud-based data center for providing various hardware and software
resources in NFV architecture. It mainly has 3 parts:
a. Hardware Resources.
b. Virtualization Layer
c. Virtualized Resources.
The hardware resource includes compute, storage, and network devices. The virtualization layer helps in decoupling the hardware resources and software resources.
This can be done various proprietary resources like the KVM, VMWARE, etc. In the
third part, virtualized resources include virtual compute, virtual networks.
Virtualized Network Functions (VNF):
The major building block of NFV architecture is VNF which performs actual
virtualized functions like switching and routing. They are the software implementations of the virtual functions. E.g. Virtual firewall, load balancers, intrusion detection
system, etc.
Management and Network Orchestration:
Management and orchestration is divided into 3 parts.
a. Virtualized Infrastructure Manager
b. VNF Manager
c. Orchestrator.
The virtualized Infrastructure Manager is used for the communication between
the VNFI storage, compute and network for controlling and management purposes;
various deployment and monitoring tools are made available by the virtualization
layer. The VNF manager is used for the management of the VNFs life cycle,
it includes the initialization, updating, querying, scaling, and terminating of the
VNF instances. Various network services which include the instantiation, policy
management, performance management, Monitoring are provided by orchestrator
manager.
J. R. Prasad et al.
1. Virtualization
2. Softwarization
3. Orchestration and Automation.
The NFV architecture is briefly categorized into 3 parts they are the:
1. Network Function Virtualization Infrastructure (NFVI)
2. Virtualized Network Functions (VNF)
3. Management and Network Orchestration.
Network Function Virtualization Infrastructure (NFVI):
It is like the cloud-based data center for providing various hardware and software
resources in NFV architecture. It mainly has 3 parts:
a. Hardware Resources.
b. Virtualization Layer
c. Virtualized Resources.
The hardware resource includes compute, storage, and network devices. The virtualization layer helps in decoupling the hardware resources and software resources.
This can be done various proprietary resources like the KVM, VMWARE, etc. In the
third part, virtualized resources include virtual compute, virtual networks.
Virtualized Network Functions (VNF):
The major building block of NFV architecture is VNF which performs actual
virtualized functions like switching and routing. They are the software implementations of the virtual functions. E.g. Virtual firewall, load balancers, intrusion detection
system, etc.
Management and Network Orchestration:
Management and orchestration is divided into 3 parts.
a. Virtualized Infrastructure Manager
b. VNF Manager
c. Orchestrator.
The virtualized Infrastructure Manager is used for the communication between
the VNFI storage, compute and network for controlling and management purposes;
various deployment and monitoring tools are made available by the virtualization
layer. The VNF manager is used for the management of the VNFs life cycle,
it includes the initialization, updating, querying, scaling, and terminating of the
VNF instances. Various network services which include the instantiation, policy
management, performance management, Monitoring are provided by orchestrator
manager.