1. 1 G-WiN - the future Gbit/s Infrastructure for the German Scientific Community Gertraud Hoffmann, DFN-GS URAN Workshop Kiev 29.09.-3.10.1999

2. 2 Contents Current Network B-WiN Reasons for a new Gbit/s-Network Traffic Analysis Technology The Procurement Future G-WiN-Services G-WiN Characteristics

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4. 4 Breitband-Wissenschaftsnetz (B-WiN) 34 Mbit/s 155 Mbit/s

5. 5 Reasons for a New Gbit/s- Network Growing quantitative demands –national connectivity traditional applications new applications –distribution of intl. Traffic Growing qualitative demands –flexible bandwidth assignment –CoS / QoS Requirements Changes on the bandwidth market

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7. 7 Traffic Analysis (1)

8. 8 Traffic Analysis (2) Growing traditional traffic: (factor 2.2 pa) Multimedia factor: 3-5 on monthly averages consequence 1: number of high-speed accesses will grow over the years (technical perspective) consequence 2: backbone has to be dimensioned according to the needs with only financial restrictions

9. 9 G-WiN Technology (1) SDH /WDM platform for IP traffic Point-to-Point service (flexible bandwidth provision) –60 * 34 Mbit/s point-to-point available and switchable at any time ATM Service ( flexible bandwidth and QoS provision) within backbone flexible shifts of bandwidth according to changing user demands

10. 10 Technology (2) Customer Router / ATM Switch Backbone Node (29) G-WiN Backbone

11. 11 Future G-WiN-Services ServicesCapacity (in Mbit/s) –Internet0.128, 2, 34, 155, 622, 2400 –Point-to-Point2, 34 –ATM2, 34 CoS / QoS –urgent need for a lot of applications –needs definition and organisational concepts for implementation

12. 12 The Procurement European Tendering for winner –backboneDeutsche Telekom –access linesmiscellaneous –routerCISCO –transatlantic connectivitystill open

13. 13 G-WiN Characteristics (1) Demand Forecast of access ports

14. 14 G-WiN Characteristics (2) Throughput main traffic hour

15. 15 G-WiN Characteristics (3) Number of Backbone Interfaces

16. 16 G-WiN Characteristics (4) Cost Diagram

17. 17 G-WiN Characteristics (5) appropriate platform for traffic growth and for new user applications Implementation of latest available technology (SDH / WDM, later end-to-end WDM) appropriate cost/bandwidth curve on the ntl. scale, later (hopefully) Europe and US available Q1 2000