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| Image Source: www.pixabay.com |
Also read: SDN Basics / 101
As you can see from the table below, NFV and SDN are both complementary technologies and can be deployed simultaneously in a network.
Network Functions Virtualization | Software Defined Networks |
Network Functions Virtualization (NFV) helps service providers to virtualize functions such as routing, load balancing, deep packet inspection and policy management. Such services are run on top of standard off-the-shelf servers. NFV helps service providers to consolidate network functions and eliminates the need for special purpose hardware. | Software Defined Networking (SDN) is a network architecture where the control plane is decoupled from the hardware and implemented as a software application. The control plane runs on any standard server in a centralized location. This architecture provides more programmability and control to the network administrators. |
NFV is targeted at service providers | SDN architecture is predominantly used in data centers |
Standards are still evolving. Driven by ETSI NFV Working group | Open Networking Foundation is driving the standards. |
No new protocols, yet | OpenFlow, ForCES, PCE, XML |
Early applications are virtualizing routers, firewalls, load balancers etc., | Early applications are VM migration, cloud network services provisioning etc., |
Also read:
SDN Architecture - Protocols & Components
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