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Blending SDN with PCE for scalable data center service deployment

Research output: Contribution in Book/Report/ProceedingsPaper

Published

Publication date1/06/2012
Host publicationiPOP: IP Over Optical
Place of publicationJapan
Original languageEnglish

Abstract

The exponential growth of the data center has underlined the need to have a greater degree of service awareness and optimal use of data center network resources. The development of Software Defined Networking (SDN) and OpenFlow has provided an efficient method of forwarding plane and control plane separation. The Path Computation Element (PCE) is an entity capable of computing complex multiple-constraint paths for a single or set of services. By combining these technologies Communication Service Providers (CSPs) can achieve an unprecedented level of control and optimization of data center network resources and deployment of services. This new architecture will provide a significant evolutionary step in data center design and operation.

This presentation proposes a flexible architecture for control and operation of data center resources and services, underpinned with SDN and PCE technologies. OpenFlow will provide forwarding control for services and the PCE provides path optimization based on application constraints and SLA requirements. The presenter will outline how the transport layer (optical) is driven from the application layer (IP network) with bandwidth flexibility and grooming capabilities being provided in real-time and responding to application-layer demands. Advanced computation is provided by the PCE and utilising key capabilities including global (statefull) awareness and optimization, with inter-layer cooperation. Finally the presenter will outline CSP deployment use cases and benefits utilising the aforementioned components and architecture.