Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
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...
Upcoming SlideShare
Loading in …5
×

Optical Data Networking.ppt

1,376 views

Published on

  • Be the first to comment

  • Be the first to like this

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>

×