1. 1 Update on German Network for Research & Education Martin Wilhelm DFN, Germany wilhelm@dfn.de October 2002

2. 2 Contents DFN association: targets, objectives, finance Today's technical platforms and services Example of successful internat. collaboration What is next?

3. 3 Targets of DFN association Higher Education and Research (universities, research institutes) Institutions with close relationship to the research and education community Research departments of industry Government agencies

4. 4 Objectives of DFN association Provision of nat. and internat. connectivity by means of a leading edge infrastructure (G-Win) Bundling community requirements Testbeds for next generation network technologies Promotion of new applications Organization for international collaboration

5. 5 Finance of DFN association non-profit organization federal government subsidizes start-up Operational costs (capacity, equipment, personnel, services...) must be fully covered by income:  charges for services

6. 6 Transport Platform Toolkit of SDH/WDM lines from Dt. Telekom: configurable topology, increasing bandwidth 27 network nodes operated by DFN Used for IP, ATM, GigE links, DFNVC,... Automatic SLA evaluation of 15min BER

7. 7 G-WiN: Today‘s Topology Stuttgart Leipzig Berlin Frankfurt Karlsruhe Garching Kiel Braunschweig Dresden Aachen Regensburg Kaiserslautern Augsburg Bielefeld Hannover Erlangen Heidelberg Ilmenau Würzburg Magdeburg Marburg Göttingen Oldenburg Essen St. Augustin Core Node 10 Gbit/s 2,4 Gbit/s 622 Mbit/s as of October 2002 Rostock Global Upstream GEANT Hamburg Topology computed, based on Operations Research methods. Optimised for low hopcount, low cost, high resilience by use of actual traffic matrices

8. 8 Structure of Routers Level-2 node Level-1 node CR: Core Router AR: large Access Router ar: small Access Router KR: Customer Router Level-2 node

9. 9 Some figures of DFN Internet approx. 600 connected sites ~ 800 TB/month network throughput 95% of all traffic is IP traffic ~ doubles every year Global Upstream 5 Gigabit/s connected to GTREN @ 2,5 Gigabit/s via GEANT

10. 10 Problem tracking at a G-WiN core node

11. 11 Services provided DFNIP: IP-service (national, international, NREN-to-NREN as well as Global Upstream) DFNConnect: Point-to-point within network DFNATM: “Legacy” ATM DFNVC: Managed Video Conference Service DFN@home: Dial-in (ISDN, xDSL) with pro- vision of IP-addresses from home institution

12. 12 Collaboration Duke University - DFN Telepresence across Internet2 networks (details at http://www.fuqua.duke.edu/admin/it/telepres.htm) Global Conference System, connecting Durham, NC and Frankfurt, Germany. No noticeable latency, video and audio in perfect synch

13. 13 Electronic Ribbon Cutting Procedure

14. 14 What is next? 2003: More 10 G links in core 2004: Call for tender: new transport platform Growing demand for real-time services Interworking optical layer / IP ? New applications and services