1. 2002 © SWITCH SWITCHlambda Swiss experiences and plans with national fibres Thomas H. Brunner brunner@switch.ch

2. 2002 © SWITCH 2 SWITCHlambda Project SWITCHlambda: Interconnecting all Swiss Universities with dark fibre infrastructure Decision by the SWITCH Council of Foundation November 2001: Long term strategy To be deployed step by step Yearly optimized

3. 2002 © SWITCH 3 Project Goals Long living infrastructure, independent on carriers –wide area links –local loops Cost control –high investment, but low recurring cost –higher datarates at almost no extra cost –“cheap” way to implement QoS on backbone Single infrastructure –operational network can coexist with advanced experimental network –private networks for special research projects

4. 2002 © SWITCH 4 1st Step: Dark Fibre Geneva - Zurich Dec 2000 Contract with Fibre Lac SA: IRU for 20 years for 1 pair of fibres Geneva - Zurich May 2001 Evaluation DWDM equipment Aug 2001 Dark fibre accepted Sep 2001 Acceptance test DWDM Oct 2001 Start of operation

5. 2002 © SWITCH 5 DWDM System Design Sorrento Gigamux platform Bi-directional, designed for 10 Gbps / and 2 * 16 s Optical nodes located at university sites, spacing 60..110 km 360 km total end-to-end distance Optical amplification at intermediate nodes, no regeneration Only GigabitEthernet interfaces in use, 2 channels per 10 GigabitEthernet on request Separate connections (1 or 10 GE) for special projects

6. 2002 © SWITCH 6 Experiences Wide area fibre –No surprises, cost were known from the beginning Local loops –Cost effective solutions require a lot of planning and negotiations –Synergies with other local projects possible DWDM –Once its set up, simple and stable Customer demand lagging behind expectations –Little interest for private p2p GE links, no request for 10 GE

7. 2002 © SWITCH 7 10 Gbps Experiment Tests to verify 10 Gbps / capability –Borrowed STM-64 transponders from Sorrento and Force-10 routers Result –1st test with signal regeneration at Berne –2nd test with transparent channel Zurich - Geneva –In both cases 0 packet loss for 8 Gbps average load during 35 hours –bit error rate better than 10 -15

8. 2002 © SWITCH 8 Planned Setup end of 2002 Existing fibre optic link May 2002 Contract with the Swiss federal railways singed Geneva - Lausanne- Neuchatel - Olten - Zurich Zurich - Gotthard - Manno 2 new links planned for end 2002: