Infinera INFN announced today the telecommunication industry's first
successful demonstration of a prototype Software Defined Network
(SDN) Open Transport Switch (OTS) in partnership with the U.S.
Department of Energy's Energy Sciences Network's (ESnet) Long Island
Metropolitan Area Network (LIMAN) control plane test bed.
This proof-of-concept demonstration shows the potential of Transport
SDN, extending the concepts and benefits of SDN to the dynamic
optical transport layer. The OTS concept is a lightweight virtual
transport switch that may be deployed on optical transport systems to
interface with a SDN Controller via an extended version of the
OpenFlow protocol. This approach has the potential to facilitate
application-driven control over transport bandwidth services,
including converged wavelength, OTN and packet transport technologies. By enabling multi-layer coordination and control,
service providers will potentially be able to leverage Transport SDN
to improve the utilization and efficiency of their network
infrastructure, increase network resiliency, and deploy new services
more rapidly while simultaneously simplifying and automating
operations, lowering the total cost of network ownership.
In the demonstration, Infinera tested a prototype of the OTS running
on the Infinera DTN platform, allowing ESnet's optical transport
network to be configured by an SDN controller via the OpenFlow
protocol. ESnet enhanced its SDN controller and demonstrated
on-demand bandwidth Ethernet services including bandwidth elasticity
for data-intensive science experiments at Brookhaven National
Laboratory on their LIMAN network, spanning from Manhattan, NY, to
Upton, NY. The services were provisioned by a high-capacity
bandwidth-on-demand application utilizing the SDN controller in three
different transport network abstractions, including one based on
Infinera's standards-based GMPLS control plane, showcasing the potential to deploy Transport SDN in networks with existing control
planes in production.
In order to implement OTS and extend SDN to the transport layer, the
contributing platforms that are used to bu
ild this layer must be able
to virtualize the digital and optical resources. Infinera's Bandwidth
Virtualization(TM) provides this abstraction by leveraging the
integration of a standards-based GMPLS software control plane,
integrated OTN switching and photonic integrated circuit (PIC)
technology, providing a massive, shareable and programmable pool of
optical transport capacity. In contrast, conventional optical
transport systems are generally more static in nature, with limited
or no integrated OTN switching, and do not easily support Transport
SDN.
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