With enterprise applications and services becoming increasingly dynamic, traditional network
architectures are struggling to keep pace and meet the demands of the modern enterprise.
According to analyst firm Ovum, software-defined networking (SDN) is the only way enterprises
can build future networks which are flexible, scalable, and intelligent.
In a new report, researchers at Ovum have revealed that the three-tier hierarchy (access,
aggregation, and core) of network architecture is going away in favour of flatter architectures,
virtualized application software is replacing network appliances, and network infrastructure is
becoming much more programmable.
SDN has already had a major impact on the communications industry by providing a focal point
for a revitalized interest in networking, said David Krozier, principal analyst in Ovums Network
Infrastructure Telecoms team. SDN provides an opportunity to completely reexamine network
architectures, introduce virtualization, and provide truly innovative solutions.
With SDN the focus of networking has moved from the feeds and speeds of the data plane
to the intelligence inherent in the control plane and related network services. Instead of
crafting applications to operate within the constraints of the network, with SDN the network will
dynamically adapt to provide the connectivity services that best serve the application.
Its too early in the evolution of SDN to draw conclusions about which approach will win or the
exact architecture of future networks as there is too much innovation yet to happen, and vendors
and their customers have yet to reach a common agenda. But the search by vendors and network
operators to find a better approach will eventually produce networks that are much more flexible
in providing new services (monetizing the network) and more efficient in their use of resources
(cost-effective), added Krozier.
With enterprise applications and services becoming increasingly dynamic, traditional networkarchitectures are struggling to keep pace and meet the demands of the modern enterprise.According to analyst firm Ovum, software-defined networking (SDN) is the only way enterprisescan build future networks which are flexible, scalable, and intelligent.
In a new report, researchers at Ovum have revealed that the three-tier hierarchy (access,aggregation, and core) of network architecture is going away in favour of flatter architectures,virtualized application software is replacing network appliances, and network infrastructure isbecoming much more programmable.
SDN has already had a major impact on the communications industry by providing a focal pointfor a revitalized interest in networking, said David Krozier, principal analyst in Ovums NetworkInfrastructure Telecoms team. SDN provides an opportunity to completely reexamine networkarchitectures, introduce virtualization, and provide truly innovative solutions.
With SDN the focus of networking has moved from the feeds and speeds of the data planeto the intelligence inherent in the control plane and related network services. Instead ofcrafting applications to operate within the constraints of the network, with SDN the network willdynamically adapt to provide the connectivity services that best serve the application.
Its too early in the evolution of SDN to draw conclusions about which approach will win or theexact architecture of future networks as there is too much innovation yet to happen, and vendorsand their customers have yet to reach a common agenda. But the search by vendors and networkoperators to find a better approach will eventually produce networks that are much more flexiblein providing new services (monetizing the network) and more efficient in their use of resources(cost-effective), added Krozier.
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