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Is SDN Different from Virtualisation and Cloud?
Amandeep Singh Dang Country ManagerNetworking, Dell As an industry trend, Software Defined Networking (SDN) is as potent, vital and impactful as virtualisation and cloud in IT space. Virtualisation is a technology to splice physical IT assets into virtual need based assets. Cloud is commercial/non-commercial business process modelling using virtualisation as the technology, while SDN is the technology enabler that will allow virtualisation of networks or for cloud business modelling. All three are not the same; but they are interrelated and concurrent to the overall IT virtualisation wave that we are experiencing from a business process IT or technology standpoint.
Sajan Paul Director, Systems Engineering, India & SAARC, Juniper Networks If IT managers are ready to jump aboard the SDN bandwagon, they might wonder where to begin. The answer is to start with virtualisation. Network Functions Virtualisation (NFV) is a key part of a service provider’s broader SDN strategy. While NFV and SDN are often seen as separate technologies, the reality is that the two are highly complementary and it is in combination that they deliver the most value. NFV allows for the deployment of network components as software via virtual machines. Virtualising network functions is the first step towards building an agile network and truly leveraging SDN.
Ashish Khanna Assistant Vice PresidentInformation Technology, EIH Limited SDN concept is still evolving, a lot of people are confused between SDN and network virtualisation, although in functionality, there is a thin line of difference between both technologies. The major difference is that network virtualisation focuses on combining a few hardware resources (from one vendor) and presenting them to the application and administrators as one common resource, while SDN abstracts the traditional networking hardware layers into software and hardware for efficient management of hardware and data flow.
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