1 / 17

Five Essential Elements for Future Regional Optical Networks

Five Essential Elements for Future Regional Optical Networks. Harold Snow Sr. Systems Architect, CTO Group. Agenda. Five Essential Elements – Harold Snow, Meriton Networks Reconfigurability Pay as You Grow Scalability Aggregation and Sub-Wavelength Switching Multi-Degree Operation

betty
Download Presentation

Five Essential Elements for Future Regional Optical Networks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Five Essential Elements for Future Regional Optical Networks Harold SnowSr. Systems Architect, CTO Group

  2. 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

  3. 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 • Separation of Ethernet Aggregation layer and Optical domain • Convergence of the Ethernet-Optical layer Fundamentally changing the value model of the transport infrastructure

  4. 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

  5. Optical Reconfigurability Site 2 B A Site 1 • C-C Initially between Site 3 and Site 5 •  Change Circuit to go between Site 3 and Site 7 Wavelength Selective Switch (WSS) facilitates l switching in Optical Domain • Requires transponder equipment at endpoints only • All other nodes unchanged • Saves Cost • Saves Churn Site 3 C Site 4 Site N D Site 5 A Site 7 C Site 6 D B C

  6. Pay as You Grow Scalability:“Spot” Upgrades Site 2 A Site 1 B Site 3 C Site 4 Site N D A Site 5 Site 7 C Site 6 B D • A-A Initially at 10Gbps •  Upgrade to 40Gbps • C-C Initially at 1 x 10Gbps • Upgrade to 2 x 10Gbps B-B  Add New Circuit • 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… • The overall capacity of the ring has been increased

  7. Network Efficiency: Sub-Wavelength Aggregation e.g. 40 boxes  4 10 NEs/ site ADM terminal is replaced by a pair of E-W transponders ADM ring becomes a wavelength in the WDM ring Stacked ADM Rings 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

  8. Beyond Two Degrees Example: Multiple Rings A B B 10G 1G C A A • How to do this effectively while retaining values of: • Dynamic Reconfigurability • Non-Blocking • “Virtual Lambda” efficiencies C

  9. Multi-Degree Operation l & Sub-l Switch l & Sub-l Switch l & Sub-l Switch Optical Optical Optical Optical • 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…

  10. A Flexible Optical Layer General BatchComputing& Storage Real-timeComputingCenter PublicInternet IP/MPLS 10GigE Ethernet GigEs 10GigE Agile Optical Layer Universities, Labs, etc. • On Demand Ethernet Optical Paths through the Transport Layer • Via IP/MPLS Layer • Flexibility • Direct end-to-end • Low latency & low jitter • Predictable QoS • Off-load Routers End-to-End path management of individual GigE optical paths

  11. 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

  12. 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 To any other port, wavelength, or Ethernet tunnel. Wavelength Switching Sub- Wavelength Switching Ethernet Tunnel Switching C/DWDM fiber pairs Grey interfaces: GigE/10GigE, STM-n/OC-n Integrated Service Switching for Future R&E Networks

  13. Automated Network Planning System 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 Optical layer design • GUI based interface • Auto-insert nodes & spans • Calculate OSNR, nonlinearities & dispersion penalties • Allocate equipment Design Networks in Minutes

  14. Network Management System • 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 • Reduce Errors • Auto-discovery of equipment, topology, and connections • Automatically detect fiber cabling errors • Provide Advanced, Time-Saving Features • Performance management • Remote loop-back management • Single view for all equipment

  15. 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

  16. Christian Todorov, Internet2

  17. Questions?Thank You

More Related