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Harold Snow Sr. Systems Architect, CTO Group Five Essential Elements for Future Regional Optical Networks Agenda Five Essential Elements – Harold Snow, Meriton Networks Reconfigurability Pay as You Grow Scalability Aggregation and Sub-Wavelength Switching Multi-Degree Operation Automated Network Planning and Management Systems Internet2 Network Discussion – Christian Todorov, Internet2 Q&A Confidential 1 The Transition to 21st Century Transport Networking 21st Century 20th Century Transmission of bits Switching of connections (Subrate λ paths and full λ paths) Closed OADM ring Multi-ring access and multi-degree switching Convergence of the EthernetOptical layer Separation of Ethernet Aggregation layer and Optical domain Fundamentally changing the value model of the transport infrastructure Confidential 2 Reconfigurability R&E Network environment presents unique challenges: Permanent Circuits Dynamic Circuits Years, Months, Weeks, … End-to-End circuits, and/or attachment to intermediate Routers GigE, 10GigE, 40Gbps, 100Gbps, … Mostly, it’s about creating Ethernet paths through the optical network Need circuit connectivity that is: Cost Effective across capacity range Agile Confidential 3 Optical Reconfigurability B A Site 2 Site 1 C-C Initially between Site 3 and Site 5 Site 3 Change Circuit to go between Site 3 and Site 7 D Wavelength Selective Switch (WSS) facilitates l switching in Optical Domain • Requires transponder equipment at endpoints only • All other nodes unchanged • Saves Cost • Saves Churn C Site 4 Site N A Site 5 Site 7 C Site 6 D B Confidential C 4 Pay as You Grow Scalability: “Spot” Upgrades A-A Initially at 10Gbps A Upgrade to 40Gbps Site 2 Site 1 C-C Initially at 1 x 10Gbps B Site 3 Upgrade to 2 x 10Gbps B-B C Add New Circuit D • WSS Optical Switching requires equipment changes at endpoints only • All other nodes unchanged • Saves Cost, Churn • Capacity is added where it is needed, when it is needed… Site 4 Site N Site 5 Site 7 D A C Site 6 B The overall capacity of the ring has been increased Confidential 5 Network Efficiency: Sub-Wavelength Aggregation 4 e.g. 40 boxes 10 NEs/ site Stacked ADM Rings ADM terminal is replaced by a pair of E-W transponders ADM ring becomes a wavelength in the WDM ring ADM-on-a-Wavelength Transponders incorporate standards compliant ADM functionality on a pair of line-cards Effective utilization of every wavelength (per wavelength, VC3/STS-1 level grooming) Add/Drop or optically bypass any aggregation wavelength at any node Dramatic Reduction in the amount of equipment Sub-ls are “Virtual Wavelengths” for lower-rate circuits (GigE) 9 x Full GigE per 10G l Confidential 6 Beyond Two Degrees Example: Multiple Rings A B B 10G 1G C A A How to do this effectively while retaining values of: C • Dynamic Reconfigurability • Non-Blocking • “Virtual Lambda” efficiencies Confidential 7 Optical l & Sub-l Switch Optical Optical l & Sub-l Switch Optical Multi-Degree Operation l & Sub-l Switch Wavelength and Sub-Wavelength Switch • Multi-degree OEO switching and Optical Switching functionality integrated on one platform • Non-blocking switching of Full-l Wavelengths and Sub-l “Virtual Wavelengths” between fiber degrees • Not limited to 4 Degrees • Enables Layer Optical Mesh… Confidential 8 A Flexible Optical Layer General Batch Computing & Storage Public Internet Real-time Computing Center On Demand Ethernet Optical Paths through the Transport Layer IP/MPLS Via IP/MPLS Layer Flexibility 10GigE GigEs Ethernet 10GigE Direct end-to-end Low latency & low jitter Predictable QoS Off-load Routers Agile Optical Layer Universities, Labs, etc. End-to-End path management of individual GigE optical paths Confidential 9 Looking Forward… Most if not all of the network traffic will become Ethernet based Can we leverage some flexibility and cost advantages by aggregating and sub-l switching at the Ethernet layer? Use Ethernet as a “Tunnel Support” protocol Creates “circuit orientated” end to end Ethernet tunnels Single service facilitation methodology for service delivery Precedent set with IP core networks where MPLS is used Range of standards based Tunnel methodologies under discussion in ITU Transport Study Group PBB-TE T-MPLS Confidential 10 Vision: Converged Ethernet Optical Network Multi-degree wavelength transport and switching via OEO and WSS + Layer 1-based Ethernet Sub Wavelength Switching + Layer 2 Ethernet Switching … in a single carrier-class platform From any port, wavelength, or Ethernet tunnel Wavelength Switching C/DWDM fiber pairs SubWavelength Switching Ethernet Tunnel Switching To any other port, wavelength, or Ethernet tunnel. Grey interfaces: GigE/10GigE, STM-n/OC-n Integrated Service Switching for Future R&E Networks Confidential 11 Automated Network Planning System Optical layer design GUI based interface Auto-insert nodes & spans Calculate OSNR, nonlinearities & dispersion penalties Allocate equipment Traffic planning Input services via drag and drop Calculate most efficient use of wavelengths and capacity Minimize cost and/or resource usage Import/Export capability Design Networks in Minutes Confidential 12 Network Management System 1. Simplify Routine Functions Integrated with network and element management functions Point-and-click Lightpath provisioning Operator-Selected Routing and . . . Automatic Lightpath Routing End-to-end lightpath protection Non-disruptive Live Routing Changes 2. Reduce Errors Auto-discovery of equipment, topology, and connections Automatically detect fiber cabling errors 3. Provide Advanced, Time-Saving Features Performance management Remote loop-back management Single view for all equipment Confidential 13 Summary Reconfigurability Any Circuit, Anywhere, On Demand… Pay as you Grow Scalability Incur cost and churn only When and Where it is required Future-proof for Higher Capacities Network Efficiency Effective use of capacity for lower rate (Sub-Wavelength) circuits Multi-Degree Operation Non-Blocking operation for > 2 Degrees Support for Sub-Wavelength circuits Network Planning and Management Simplified Creation and Operation of the Network Optically Engineered for future lambda rates Point-and-Click GUI Confidential 14 Christian Todorov, Internet2 Confidential 15 Questions? Thank You Confidential 16