Optical Data Networking: “IP over X”   Antonio Rodríguez Moral* & Paul Bonenfant   Lucent Technologies – Broadband Network...
“IP over WDM” Demystified  Implementation Reality <ul><li>“ Optical Internetworking”? </li></ul><ul><ul><li>Really is SDH ...
Enter “Digital Wrappers” <ul><li>Wavelength Digital Wrappers are a step toward the original vision of Optical Networking <...
What is “IP over WDM”? Take Your Pick... <ul><li>What is “IP over DWDM” (really)? </li></ul><ul><li>In an increasingly com...
Does a “Total Solution” Exist ?? <ul><li>A total solution for  what  problem? </li></ul><ul><li>And is it really  ONE  sin...
...to a  Multi-Dimensional Problem! Enterprise Access Metro/Regional Core Network Segment Evolution End Application Hard Q...
Optical Internetworking vs. Optical Data Networking  <ul><li>Optical Internetworking is today’s “IP over WDM”: </li></ul><...
Views of the  “Total Solution(s)” Optical Data Networking <ul><li>Gaining Multi-Vendor Compliance </li></ul><ul><ul><li>St...
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  • Optical Data Networking.ppt

    1. 1. Optical Data Networking: “IP over X” Antonio Rodríguez Moral* & Paul Bonenfant Lucent Technologies – Broadband Networks Group * [email_address] Globecom’99 5 – 9 December 1999 Rio de Janeiro, Brazil
    2. 2. “IP over WDM” Demystified Implementation Reality <ul><li>“ Optical Internetworking”? </li></ul><ul><ul><li>Really is SDH Internetworking </li></ul></ul><ul><ul><li>Implies single evolution for data transport </li></ul></ul><ul><ul><li>“ Networking”: Service layer networking through SDH/WDM pipes </li></ul></ul><ul><ul><li>SDH dependency limits technological innovation (e.g., Packet over Fiber, GbE and 10xGbE over DWDM evolution) </li></ul></ul><ul><ul><li>Not taking advantage of networking capability at the Optical layer </li></ul></ul><ul><li>A STEP AWAY from the original vision of Optical Networking... </li></ul>SDH-Based WDM Terminal SDH-Based WDM Terminal IP over SDH STM-16c IP over SDH STM-16c Multiple SDH STM-16 Wavelengths
    3. 3. Enter “Digital Wrappers” <ul><li>Wavelength Digital Wrappers are a step toward the original vision of Optical Networking </li></ul><ul><li>Digital Wrappers enable “virtual transparency” </li></ul><ul><ul><li>Releases the Optical Network from SONET/SDH dependency </li></ul></ul><ul><ul><li>Allows for end-to-end Optical Transport Networking solutions </li></ul></ul>Optical Channel (Wavelength) Digital Wrapper OCh OAM OCh Payload FEC Data SONET/SDH FDDI ATM PDH GbE, 10xGbE SDL IP
    4. 4. What is “IP over WDM”? Take Your Pick... <ul><li>What is “IP over DWDM” (really)? </li></ul><ul><li>In an increasingly competitive world, Service Providers have to differentiate themselves. </li></ul><ul><li>Optical Data Networking solutions should be able to accommodate each Service Provider’s unique data networking vision... </li></ul>IP PPP/HDLC SONET/SDH IP ATM SONET/SDH WDM WDM IP ATM WDM IP SONET/SDH WDM IP Standard ATM Mapping POS Mapping ATM Vision Robust Packet over SONET Robust Packet over Fiber IP 1/10xGbE MAC GbE Vision PHY WDM 1/10xGbE PHY SDL PHY SDL WDM
    5. 5. Does a “Total Solution” Exist ?? <ul><li>A total solution for what problem? </li></ul><ul><li>And is it really ONE single solution, or a set of solutions? </li></ul><ul><li>The problem: Optical Data Networks: optical networks that are optimized for data traffic (let’s say IP traffic ) and applications </li></ul><ul><li>Four dimensions pop up already: </li></ul><ul><ul><li>what network segment? </li></ul></ul><ul><ul><li>what optimization? </li></ul></ul><ul><ul><li>what IP traffic? </li></ul></ul><ul><ul><li>what user and network applications? </li></ul></ul><ul><li>And some other dimensions must be considered: </li></ul><ul><ul><li>Greenfield vs. Incumbent </li></ul></ul><ul><ul><li>IP-only vs. Multi-service platform </li></ul></ul><ul><li>So, the problem is a multi-dimensional problem, with at least 6 dimensions to consider. </li></ul><ul><li>A quick, common sense statement: </li></ul><ul><li>THERE EXISTS NO SINGLE SOLUTION THAT OPTIMIZES THE PROBLEM UNDER ALL POSSIBLE VARIABLES... </li></ul>
    6. 6. ...to a Multi-Dimensional Problem! Enterprise Access Metro/Regional Core Network Segment Evolution End Application Hard QoS Soft QoS Best Effort Voice+Video VPN Web browsing Flows Packets Circuits Traffic Mix
    7. 7. Optical Internetworking vs. Optical Data Networking <ul><li>Optical Internetworking is today’s “IP over WDM”: </li></ul><ul><ul><li>“ Optical”: Optical layer provides point-to-point transport (DWDM) </li></ul></ul><ul><ul><li>“ Internetworking”: IP layer provides networking </li></ul></ul><ul><li>Optical/Data Networking is a more powerful networking solution: </li></ul><ul><ul><li>Networking at both the transport (optical) and service (data) layers </li></ul></ul><ul><ul><li>Optical networking supports: </li></ul></ul><ul><ul><ul><li>Diversity in data networking protocols and architectures </li></ul></ul></ul><ul><ul><ul><li>Flexibility and robustness via wavelength (Optical Channel) routing, protection, and restoration </li></ul></ul></ul><ul><ul><li>Essential for open, giga/tera-bit, carrier-class Optical Data Networks optimized for network segments/applications </li></ul></ul><ul><ul><ul><li>Allows tailored solutions specific to each network segment, and to each Service Provider </li></ul></ul></ul>
    8. 8. Views of the “Total Solution(s)” Optical Data Networking <ul><li>Gaining Multi-Vendor Compliance </li></ul><ul><ul><li>Standards, Standards, Standards... </li></ul></ul><ul><li>Survivability Schemes </li></ul><ul><ul><li>Service Layer / Transport Layer will both apply, and continue to co-exist </li></ul></ul><ul><li>Integrating Legacy and Optical Networks </li></ul><ul><ul><li>Revolutionary technologies (DWDM, OAs, Digital Wrappers) have enabled an evolution in networking (Optical Networking) </li></ul></ul><ul><li>Optical Network Deployment (let’s be honest...) </li></ul><ul><ul><li>Optical Networking solutions will be deployed where economical to the Service Provider </li></ul></ul><ul><ul><li>Optical Networking solutions must meet price targets of existing/alternative technologies, or offer solutions to problems for which there is no alternative </li></ul></ul><ul><li>Management Systems to Guarantee QoS </li></ul><ul><ul><li>“ Single-seat” distributed operations platforms, or bust </li></ul></ul><ul><li>The Future is about a Network of Networks – Some Common Sense (worth repeating): </li></ul><ul><ul><li>THERE EXISTS NO SINGLE SOLUTION... </li></ul></ul>

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