OPENFLOW/SDN AND OPTICAL NETWORKS LY N D ON Y. ONG

Abstract

Service Provider Optical Networks 388 Optical Transport Network 389 Optical Network Management and Intelligent Control Plane 391 How Can SDN/OpenFlow Improve Optical Network Control? 393Goals of Applying SDN/OpenFlow to Optical Networks 393 Potential Applications for SDN/OpenFlow in Optical Networks 394Packet-Optical Interconnection (POI) 394 Data Center Interconnection and Network Virtualization 395 Private Optical Networks 396Extending OpenFlow/SDN to Optical Networks 397 What Are the Challenges to OpenFlow/SDN for Optical Networks? 397OpenFlow Extensions for Circuits 397 Optical Impairments 398 Lack of Visibility into the Data Stream 398 Technology Specific Discovery 398 Service Provider Policy and Interoperability 399 Reliability and Scalability 399Research on OpenFlow/SDN for Optical Networks 400 Ciena/Stanford Prototyping 400 OpenFlow in Europe-Linking Infrastructure and Applications (OFELIA) Project 402How Will OpenFlow/SDN Be Deployed in Carrier Optical Networks? 404OpenFlow/SDN Overlay with Transport Tunnels for POI 404 OpenFlow Overlay Over the Control Plane (with Abstraction) 405 Direct OpenFlow Control of Packet/Optical 406International Telecommunications Union – Telecommunication Standardization Sector (ITU-T) Recommendation G.805 [1], a core standard for service provider network architecture, defines transport network as “the functional resources of the network, which conveys user information between locations.” Optical transport networks (OTNs) provide the underlying connectivity in service provider networks, allowing information to be conveyed between central office locations across metro areas, long distances, and undersea networks.