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OC-192 VSR Interfaces

OC-192 VSR Interfaces. Russ Tuck, Ph.D. tuck@pluris.com. What is the OIF?. Optical Internetworking Forum Launched in April of 1998 Open forum: 250 members including many of the world’s leading carriers and vendors

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OC-192 VSR Interfaces

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  1. OC-192 VSR Interfaces Russ Tuck, Ph.D. tuck@pluris.com

  2. What is the OIF? • Optical Internetworking Forum • Launched in April of 1998 • Open forum: 250 members including many of the world’s leading carriers and vendors • The only industry group bringing together professionals from the packet and circuit worlds • Mission: To foster the development and deployment of interoperable products and services for data switching and routing using optical networking technologies

  3. What is the OIF PLL WG? • Physical and Link Layer Working Group • Three areas of work • Very Short Reach (VSR) interfaces for OC-192 • Internal interfaces for OC-192 and OC-48 • Framer interface for POS – system side • Transponder interface – framer side • OC-768 • VSR and internal interfaces • Other OIF WGs: Arch, Signaling, OAM&P • Major Project: UNI 1.0

  4. What is VSR? What’s an IA? • Very Short Reach SONET/SDH interface • Within a single facility or CO, < 1km • Intra-office links between routers, DWDMs, OXCs • $1000s less than SR interfaces • Implementation Agreement • Compliant implementations interoperate • OIF “standard”

  5. DWDM DWDM OXC WAN Router Core Router Access Router Host Router/switch Web Server Web Server Customers Peering partners Internet exchange Web Server Potential VSR links (in red)

  6. Requirements (will discuss more later) • Substantially lower cost than SR • 300m reach • 100m? 600m? 50m? • 1 patch panel in path • More patch panels? • Transparent OXC? • Multi-source components • Non-requirement? • Use installed fiber infrastructure

  7. Current VSR Alternatives • 12-fiber MMF ribbon, 850nm, 1.25 Gbs/fiber • 4-fiber MMF ribbon, 850nm, 2.5 Gbs/fiber • 1-fiber SMF, 1310nm, 10 Gbs/fiber • 1-fiber MMF, 850nm, 10 Gbs/fiber • 1-fiber MMF, 4 lambda ~850nm, 2.5 Gbs/lambda

  8. VSR IF VSR IF Patch Panel 12 MMF ribbon, 850nm @ 1.25 Gbs • 2 12-fiber ribbons (Tx, Rx) • VCSEL based • GigE speeds • 300m with 4 connectors (1 patch panel) • 62.5μm core MMF, same as guaranteed for 500m GigE • 400MHz.km modal bandwidth • MTP™ (MPO) connectors

  9. VSR IF VSR IF 4 MMF ribbon, 850nm @ 2.5 Gbs • 1 12-fiber ribbon (4 fiber Tx, 4 fiber Rx, middle 4 unused) • VCSEL based • OC-48 (2x GigE) speeds • 300m with 2 connectors (no patch panel) • 50μm core MMF, 500MHz.km modal bandwidth • MTP™ (MPO) connectors

  10. 1 SMF, 1310nm @ 10 Gbs/fiber • 2 single fibers (Tx, Rx) • Edge-emitting FP lasers • Eventually also VCSELs • 10Gbs • 600m – dispersion limited, 5dB loss budget • SMF • Based on ITU-T G.691

  11. VSR IF VSR IF Patch Panel 1 MMF, 850nm @ 10 Gbs • 2 single fibers (Tx, Rx) • VCSEL based • 10Gbs • Reach, with 4 connectors (1 patch panel) • 25m • 62.5μm core MMF,160MHz.km modal bandwidth • 85m • 50μm core MMF,500MHz.km modal bandwidth • 270m • 50μm core MMF,2000MHz.km modal bandwidth • >300m if eye safety regulations change as expected this year

  12. VSR IF VSR IF Patch Panel 1 MMF, 4 λ (~850nm) @ 2.5 Gbs • 2 single fibers (Tx, Rx) • VCSEL based, but different wavelengths • Optics combine and split wavelengths • 2x GigE speeds • 300m with 4 connectors (1 patch panel) • Uses open fiber control • 50μm core MMF, 500MHz.km modal bandwidth • Duplex SC connector

  13. Questions? • I’ll answer some, then I’ll ask you some.

  14. BoF Demographics • Backbone Carriers (choose one) • National ISPs • Local ISPs • Co-lo/Hosting/IXP • Equipment Vendors • Other • Using DWDM (choose all that apply) • Using OXC • Using POS • Using ATM • Using OC-192 • Using OC-48

  15. DWDM DWDM Applications • Which links will be first to use VSR? • When? • Which links will not use VSR? • Why? OXC

  16. Reach • Which is more important? • Long enough for all intra-office links • (How long is that?) • Short and cheap • (How short?)

  17. Reach • If it saves $1000/port, how long a reach does it need? • 50m • 100m • 300m • 600m • If it saves $5000/port, how long a reach does it need? • 50m • 100m • 300m • 600m

  18. Fiber Type

  19. Fiber Lifetime • Are VSR cables “patch cords” or “infrastructure”? • Why? • If “infrastructure”, how long must they be useful? • How expensive to install?

  20. Interface Longevity • How often should there be new, lower-cost links? • How much cheaper should a new interface be?

  21. DWDM DWDM OXC Loss Budget – Transparent OXC • Will you use an OXC between routers and DWDMs (in next 2 years)? • Transparent? • OEO? • All links? • If transparent: • Wavelength? • dB loss? • SMF only? • Must all VSR links support OXC? Or 2 types?

  22. VSR IF VSR IF Loss Budget – Patch Panel • How many patch panels per link? • How many connectors? Patch Panel Patch panels: 1 Connectors: 1 2 3 4 Reach:

  23. Vendor Support • How many vendors must support interoperable VSR implementations before you deploy? • 1 • 2 • 3 • 5 • 10 • 30 • Why?

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