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Globecom’99 5 – 9 December 1999 Rio de Janeiro, Brazil

Optical Data Networking: “IP over X” Antonio Rodríguez Moral* & Paul Bonenfant Lucent Technologies – Broadband Networks Group * arodmor@lucent.com. Globecom’99 5 – 9 December 1999 Rio de Janeiro, Brazil. IP over SDH STM-16c. IP over SDH STM-16c. Multiple SDH STM-16 Wavelengths. SDH-Based

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Globecom’99 5 – 9 December 1999 Rio de Janeiro, Brazil

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  1. Optical Data Networking: “IP over X”Antonio Rodríguez Moral* & Paul BonenfantLucent Technologies – Broadband Networks Group*arodmor@lucent.com Globecom’99 5 – 9 December 1999 Rio de Janeiro, Brazil

  2. IP over SDH STM-16c IP over SDH STM-16c Multiple SDH STM-16 Wavelengths SDH-Based WDM Terminal SDH-Based WDM Terminal “IP over WDM” Demystified Implementation Reality • “Optical Internetworking”? • Really is SDH Internetworking • Implies single evolution for data transport • “Networking”: Service layer networking through SDH/WDM pipes • SDH dependency limits technological innovation (e.g., Packet over Fiber, GbE and 10xGbE over DWDM evolution) • Not taking advantage of networking capability at the Optical layer • A STEP AWAY from the original vision of Optical Networking...

  3. IP SONET/SDH FDDI ATM SDL GbE, 10xGbE PDH FECData OChOAM OCh Payload Optical Channel (Wavelength) Digital Wrapper Enter “Digital Wrappers” • Wavelength Digital Wrappers are a step toward the original vision of Optical Networking • Digital Wrappers enable “virtual transparency” • Releases the Optical Network from SONET/SDH dependency • Allows for end-to-end Optical Transport Networking solutions

  4. Standard ATM Mapping Robust Packet over SONET Robust Packet over Fiber POS Mapping ATM Vision GbE Vision IP IP IP IP IP IP ATM PPP/HDLC ATM 1/10xGbE MAC SDL SDL SONET/SDH PHY SONET/SDH 1/10xGbE PHY SONET/SDH PHY WDM WDM WDM WDM WDM WDM What is “IP over WDM”?Take Your Pick... What is “IP over DWDM” (really)? • In an increasingly competitive world, Service Providers have to differentiate themselves. • Optical Data Networking solutions should be able to accommodate each Service Provider’s unique data networking vision...

  5. A total solution for what problem? And is it really ONE single solution, or a set of solutions? The problem: Optical Data Networks: optical networks that are optimized for data traffic (let’s say IP traffic) and applications Four dimensions pop up already: what network segment? what optimization? what IP traffic? what user and network applications? And some other dimensions must be considered: Greenfield vs. Incumbent IP-only vs. Multi-service platform So, the problem is a multi-dimensional problem, with at least 6 dimensions to consider. A quick, common sense statement: THERE EXISTS NO SINGLE SOLUTION THAT OPTIMIZES THE PROBLEM UNDER ALL POSSIBLE VARIABLES... Does a “Total Solution” Exist ??

  6. ...to a Multi-Dimensional Problem! Hard QoS Soft QoS Enterprise Access Best Effort Voice+Video Metro/Regional VPN Traffic Mix Core Web browsing Network Segment End Application Evolution Circuits Packets Flows

  7. Optical Internetworking vs. Optical Data Networking • Optical Internetworking is today’s “IP over WDM”: • “Optical”: Optical layer provides point-to-point transport (DWDM) • “Internetworking”: IP layer provides networking • Optical/Data Networking is a more powerful networking solution: • Networking at both the transport (optical) and service (data) layers • Optical networking supports: • Diversity in data networking protocols and architectures • Flexibility and robustness via wavelength (Optical Channel) routing, protection, and restoration • Essential for open, giga/tera-bit, carrier-class Optical Data Networks optimized for network segments/applications • Allows tailored solutions specific to each network segment, and to each Service Provider

  8. Views of the “Total Solution(s)”Optical Data Networking • Gaining Multi-Vendor Compliance • Standards, Standards, Standards... • Survivability Schemes • Service Layer / Transport Layer will both apply, and continue to co-exist • Integrating Legacy and Optical Networks • Revolutionary technologies (DWDM, OAs, Digital Wrappers) have enabled an evolution in networking (Optical Networking) • Optical Network Deployment (let’s be honest...) • Optical Networking solutions will be deployed where economical to the Service Provider • Optical Networking solutions must meet price targets of existing/alternative technologies, or offer solutions to problems for which there is no alternative • Management Systems to Guarantee QoS • “Single-seat” distributed operations platforms, or bust • The Future is about a Network of Networks – Some Common Sense (worth repeating): • THERE EXISTS NO SINGLE SOLUTION...

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