1. 1 Optical networking TF-NGN, Athens October 16 th, 2001 Victor Reijs

2. 2 Optical networking Aim of session Status update… Brainstorm on ‘lambda switching’…

3. 3 Optical networking Outline Possible European optical testing Wrapper technology: G.709... Brainstorm on ‘lambda switching’...

4. 4 Optical networking G.709: Robert

5. 5 Optical networking Brainstorm on ‘lambda switching’ Lambda workshop in Amsterdam –http://www.terena.nl/conf/lambda/programme. html New way of thinking: consume bandwidth –radical new applications (such as a link as a storage device) –work together with e.g. grid computing initiatives –user controlled bandwidth

6. 6 Optical networking Real lambda switching is far off The only standard is ITU-T grid For lambda interoperability no standards on: –Laser modulation –Spectrum width –Power levels –Bandwidth: OC-48, OC-192,... –Dispersion management Work on this to help resolve these issues

7. 7 Optical networking Possible set ups Optical switch: Switching/changing colors Protocol transparent Power sensitive Router/switch: Transponding colors Not protocol transparent Cross bar: Transponding colors Protocol transparent

8. 8 Optical networking Some ideas (1, Users) User not particularly interested in lambda's, but in bandwidth Virtual path can be a lambda, GE, STS, etc. Virtual paths managed by user: –desk to desk? –computer center to computer center? Provide (some?) user more capabilities to make networks according to his/her needs

9. 9 Optical networking Some ideas (2, ATM) Don’t fall in the ATM trap of 10 years ago. What is really new from ATM times? –ATM: (34 Mbit/s) 155 Mbit/s - 2.5 Gbit/s (5x, 16x) –WDM: (622 Mbit/s) 2.5 -> 40 Gbit/s (4x, 16x) –More evolved standards and more experience: RSVP, Tag/MPLS(-TE/FRR) switching, GMPLS Multi homing, how common and wanted is it (routing loops)? (S)PVC’s can do the job, instead of SVC’s

10. 10 Optical networking Some ideas (3, CPE) No multiple lambda interface, but multiple GE(/SONET) interfaces in CPE No reuse of unused bandwidth within lambda –Waste of bandwidth? User managed bandwidth only provided within IP layer Inter domain routing is important for NREN community: –GMPLS (intra domain, inter domain later) –OBGP (starting with inter domain)

11. 11 Optical networking Some ideas (4, Optical net.) For optical networking OEO is normally needed In optical WAN one needs per lambda 3R (regeneration, retiming, reshaping) G.709 could make it framing independent In MAN framing transparency looks to be possible Interworking WAN (DWDM), MAN (CWDM) and LAN (GE)?

12. 12 Optical networking Some ideas (5, Services) Virtual paths for internal ISP bandwidth provision –intra domain Virtual paths between ISP’s (at peering points) –inter domain Virtual paths between end-users –end-to-end, inter domain

13. 13 Optical networking Brainstorm... Do I invest time in user managed bandwidth??? How do I start: –Wait and let others do this research? –Which opportunities are there?