5 NFV Benefits & The Trends Driving Them

These days, millions of consumers and businesses are connected to a network in one form or another. As a result, the systems and datacenters used to transport and house content are getting bigger, more pervasive, and increasingly complex. Add to this the explosive amount of data crossing the network, and it quickly becomes apparent that companies and service providers face a daunting challenge.

Network functions virtualization (NFV) promises to ease the burden by granting service providers the flexibility to move network functions from dedicated appliances to generic servers. Using standard IT virtualization technology, NFV aims to consolidate many network equipment types on to industry-standard, high-volume servers, switches, and storage; doing so makes the networks more agile and efficient.

NFV also is flexible, cost-effective, scalable, and secure. With these benefits, NFV addresses several trends shaping service provider networks.

Let's take a closer look at how NFV addresses these trends. By its very nature, NFV makes network and service provisioning more flexible. That allows operators and service providers to scale services up or down quickly to address changing demands. Those services are delivered via software applications on any industry-standard server hardware, one of the most important of which is expected to be security gateways. Rather than buying a hard asset, service providers can simply take the function associated with the asset and instantiate it as a virtual machine on a server.

Because the network functions are implemented in software, they can be easily moved to various locations in the network without having to install new equipment. That means operators and service providers won't need to deploy as many hard assets. Instead, inexpensive, high-volume server infrastructure can be deployed with virtual machines running on top. That's where the cost savings comes in, but NFV's use of virtual machines (software) also makes it scalable.

On top of that, the virtualization eliminates the dependency between a network function and its hardware, allowing operators to have a local or regional presence without needing the infrastructure to support that presence.

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Additional cost savings and benefits are possible depending on how NFV is implemented, using either a server CPU or an approach that marries a server-class CPU with best-in-class networking. The initial implementation of software only cannot address most networking workloads, and its use of IT standard hardware limits the applicability of NFV to just a few applications. The latter approach, a hybrid model of processing and acceleration hardware, not only delivers the power efficiency and improved performance operators and service providers demand, but it does so at a much lower cost.

It's clear that NFV can address the key trends confronting operators and service providers. However, as with any new technology, the road ahead is lined with pitfalls. Despite that, proof of concepts are under way. If all goes well, NFV will soon be transforming the way operators design and implement networks and network services for the better.