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Difference between SDN and NFV
2022-12-22 22:00:56

Difference between SDN and NFV

1. Software Defined Networking (SDN)

The aim of the SDN design is to enhance overall network performance, and by providing a dynamic and programmatically effective network setup, networks may become nimble and adaptable. In order to provide more automated provisioning and policy-based management of network resources, SDN is a technology that separates the control plane management of network devices from the underlying data plane that forwards network traffic. Basically, SDN makes networks programmable by isolating the systems that will determine where traffic should be sent, i.e., Pushing data packets to specific destinations is done by the data plane, which is part of the underlying system's control plane. With the use of software that makes networks centrally programmable, SDN provides its users with a method to access controlled network services and allows for quicker configuration. Businesses and service providers can react swiftly to market requirements thanks to software-defined networking, and Changes in requirements ultimately lead to better network control.

2. Network Functions Virtualization (NFV)

Network Function Virtualization (NFV) is a network architecture that aims to speed up service deployment for network operators and save costs by isolating tasks like a firewall or removing encryption from dedicated hardware and shifting it to virtual servers, combining several tasks into a single physical server, which eventually lowers total cost. NFV enables different network operators to implement network policies without being concerned about where to put functions in the network or how to route traffic via these functions. It is a method for virtual network services, including load balancers, firewalls, and routers that have historically been implemented on computer hardware whose user interface is managed by the owner and allows the deployment of network services on virtual machines. The hypervisor for virtual machines is referred to as virtual machine management. It allows several operating systems to share a single physical CPU. It will produce high-performance networks with improved flexibility, scalability, and, compared to networks constructed with conventional networking hardware, versatility at low cost. In order to get over the traditional drawback, reduces the requirement for specialized or proprietary hardware for network deployment and management using custom-designed network equipment.

Difference between SDN and NFV

SDNNFV
The main focus of SDN architecture is the data centre.  NFV is targeted at operators or service providers.  
SDN divides the control and data forwarding system with centralization and programmability of the network.  Functions like load balancing, routing, and other administrative tasks may be virtualized with the aid of NFV, and by shifting the entire network from specialized hardware to virtual servers, policy management.  
OpenFlow is a communication protocol used by SDN.  For NFV, no protocol has yet been established.  
Open Networking Foundation is supported by SDN.  The ETSI NFV Working Group is in charge of NFV.  
Various enterprise networking software and Hardware makers support the SDN project.  The main proponents of the NFV initiative are telecom service providers or operators.  
The business initiator for SDN is corporate IT.  Initiators of business for NFV are service providers or operators.  
SDN activities are implemented on switches or servers that are popular in the industry.  Industry-standard servers power NFV applications.  
SDN lowers network costs because it eliminates the need for pricey switches and routers.  As NFV dynamically assigns hardware a degree of capacity to network services needed at a certain moment, it boosts scalability and agility and speeds up time-to-market.  
Application of SDN: Cloud orchestration.Networking.  Application of NFV: Content Delivery Networks (CDN)Video ServersSLA assuranceWAN acceleratorsfirewalls, gateways, and routers