OpenFlow was adopted as protocol
of communication between SDN controllers and SDN compliant DP switches. This
strategy was adopted to disaggregate the control plane from data plane giving
the end user more programmability using SDN based networks.
Service provider deployment
of SDN vs Enterprise deployment of SDN
In the enterprise, that
approach garnered a lot of interest, but ultimately limited acceptance, the
analysts said, estimating less than 2,000 deployments that meet the original
architectural requirements, mostly in Japan. The story's different in the
service provider market, where OpenFlow, which became synonymous with SDN,
"gained significant traction," according to Gartner.
Among the many reasons for
the tepid enterprise adoption cited by Gartner: The conservative nature of
networking buyers, a lack of immediate business drivers, and the market power
of incumbent vendors that had a vested interest in protecting their position.
The global software
defined networking market is expected to grow at approx. USD 61 Billion by
2023, at 39% of CAGR between 2017 and 2023.
The overall data center
network equipment market includes Ethernet switches, bare metal, application
delivery controllers (ADCs), and SD-WAN revenue.
While investment in
physical infrastructure continues to drive network equipment growth in the
short term, IHS Markit expects this to slow down this year (2018) and next
as companies move from on-premises data centers to the cloud. This will mean
fewer — but higher capacity — servers, reducing the need for data center
Ethernet switch ports along with the move to virtual ADCs.
Data center network equipment revenue totaled $13.7 billion in 2017, a 13 percent increase over the previous year, according to IHS Markit’s latest numbers. The analyst firm forecasts the market will grow to $19.6 billion by 2022.
The ongoing shift to the cloud not only moves network equipment out of the enterprise data center, but also requires less equipment, as the cloud represents data center consolidation on a wide scale.” The new data center network equipment report also projects SD-WAN revenue, which hit $444 million for the full-year 2017, will reach $3.6 billion by 2022. The next wave for SD-WAN includes increased analytics, with artificial intelligence (AI) and machine learning (ML) providing multi-cloud connectivity,
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