Transport SDN: Key Drivers & Elements

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Presentation transcript:

Transport SDN: Key Drivers & Elements Chris Liou – Infinera Corp VP Network Strategy cliou@infinera.com

The Evolving WAN Landscape 100Gb coherent technology Optical Super-channels on the horizon Bandwidth service needs vary broadly Fiber Capacity WDM + OTN + Packet transport = Flexibility Intelligent traffic management & switching Router offload & bypass Transport Convergence Dynamic traffic patterns & profiles Demand for adaptive and agile transport Integration of Network & IT Data Center Networking

How does this impact the Network? Architectural choices for WAN abound – which layers? Layer 3 (IP) Layer 2.5 (MPLS) Layer 2 (Ethernet) Layer 1 (OTN – digital framing, grooming, switching, protection) Layer 0 (WDM - optical level transmission, multiplexing, switching) Network Providers reexamining total network economics Lifecycle considerations Traffic types, patterns & growth sensitivity Network trends beyond 100G WDM Minimizing cross-layer traversals (least cost, least power, best perf path) Maximum network resource utilization & efficiency Automation & cloud orchestration are needed Programmability of bandwidth services vs network components Virtualization & abstraction drive simplicity, but how much?

Applications for Transport SDN Dynamic Virtual Waves Networking-as-a-Service (NaaS) Layer 1 Virtual Networks (network slicing for multi-tenancy) Virtual transport switches & virtual bandwidth links Useful as both Internal partitioning & external service capability Optimized Data Center Interconnect Right-sized transport capacity (tunnels) for A-Z flow set Multi-layer topology integration & resiliency Multi-layer orchestration & optimization Simplified orchestration through uniform API Optimize traffic flows through multi-layer network E.g., minimize packet processing for Big Data at intermediate sites Globalized optimization for lowest-cost & highest network utilization

Transport SDN Demo Collaboration Key Elements Integrated WDM/OTN infrastructure Dynamic, switched real-time circuits Bandwidth Virtualization for abstracting optics Open Transport Switch (OTS) Virtual transport switch OpenFlow 1.0 protocol extensions Transport BW src, dst, size, latency, abstraction level, etc. GMPLS technologies Key capabilities well suited for SDN framework Topology discovery Robust signaling Route computation can still be centralized! SDN Controller & App OSCARS, OpenFlowJ Bandwidth On Demand App Network Abstractions NB API ESnet Transport SDN Control Layer Discover, Monitor, Control OpenFlow+ Bandwidth Virtualization OTS OTS OTS Converged Transport Network