Software Defined Networking (SDN) Explained!

20 · JUL ·2017


Software-defined networking (SDN) is an approach to computer networking that allows network administrators to programmatically initialise, control, change, and manage network behaviour dynamically via open interfaces.

SDN is meant to address the fact that the static architecture of traditional networks doesn't support the dynamic, scalable computing and storage needs of more modern computing environments such as datacentres.

This is done by decoupling or disassociating the system that makes decisions about where traffic is sent (the SDN controller, or control plane) from the underlying systems that forward traffic to the selected destination (the data plane).

So in English?

SDN is using software to define and build networks rather than hardware.

That sounds like a PWAN?

Exactly!! FluidOne have been offering Private Wide Area Networks for nearly 10 years which essentially is a virtual network across a core network. You can dynamically change the use of the network, IP addresses and so forth with no need to redeploy hardware or change infrastructure. This can be done over every last mile connections whether it is fibre Ethernet, DSL or wireless.

What is an SD-WAN?

Essentially the industry term for a PWAN. Wikipedia defines it as ‘An SD-WAN is a Wide Area Network (WAN) managed using the principles of software-defined networking. The main driver of SD-WAN is to lower WAN costs using less expensive leased lines, as an alternative or partial replacement of more expensive MPLS lines. Control and management is separated from the hardware, with central controllers allowing easier configuration and administration.’


"You can dynamically change the use of the network, IP addresses and so forth with no need to redeploy hardware or change infrastructure."

So…

SDN and importantly SD-WAN is something FluidOne have been doing for years and years, our network has been built for this purpose from the beginning.

Talk to us today about your SD-WAN requirements, call us on 0345 868 7848 or contact us by clicking here.


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Posted by Dan Pope