Track 5: Network Transformation: SDN/NFV/Data Centers

Optimized Multi-Layer Protection in Transport SDN

August 16, 2018 8:00 AM - 9:00 AM

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Mohcene Mezhoudi


Evolution of IP/optical transport to Software Defined Networking (SDN) is strategically critical for many network operations. SDN promises agile and dynamic allocation of network resources and rapid provisioning of services in networks that address future dynamic traffic cost efficiently. We investigated one of the SDN use cases where IP/Optical multi-layer protection leveraging adaptive multi-layer resource allocation made possible by an SDN controller over an agile IP/optical network. The study quantified the TCO savings compared to Present Mode of Operations (PMO). In this seminar, we first present an SDN controller architecture able to dynamically allocate resources and determine network topology across the IP and optical. Three protection strategies, applied differentially to a mix of traffic classes, are then defined. These include the MPLS-only typical for PMO with protection mechanisms at MPLS only, and a multi-layer strategy for Future Mode of Operations (FMO) where the protection/restoration schemes use a mix of MPLS and optical protection mechanisms. The multi-layer protection strategy leverages SDN enabled adaptive resource allocation optimized to varying traffic and achieve more efficient utilization of network resources. Through multiple case studies with detailed modeling, we show that multi-layer protection strategies achieve 25%-40% TCO savings over 5 years. Insight on key drivers for the TCO saving is also presented along with modeling methodology

Bell Labs Consulting (BLC), Nokia is focused on advising the IT and broader communications networking industry as it prepares to deal with upcoming network challenges that will emerge in the years 2020’s. BLC is concentrating on helping enterprises, service and network operators rethink how they build, deploy and operate their networks, with an eye on how they can take advantage of technologies that can help them break ties with the limitations of the legacy past. BLC consists of a multi-disciplinary team of scientists, technologists, modelers and services and system experts with expertise in a wide range of technical fields. new revenue models, and optimized operations as well as “vertical” industries ranging from defense communications and private-sector networking to utilities