1. NSFNet, the first Internet backbone Skills: none IT concepts: backbone network, history of networking This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License.

2. Where does this topic fit? Internet concepts –Applications –Technology (communication) –Implications Internet skills –Application development –Content creation (audio)

3. NSFNet backbone, July 1986-8, 56 kbps

4. Initial T1 (1.5 Mbps) backbone, July 1988

5. T1 backbone, 1991

6. Networks connected to the backbone

7. Project Cost ($Million) Morse telegraph.03 ARPANet25 CSNET5 NSFNet backbone57.9 NSF US higher education connections30 NSF international connections6 123.93 Your tax dollars at work – a good investment

8. Decommissioned in April, 1995, linking 28,470 domestic and 22,296 foreign networks. NSFNet was global and successful

9. Internet languages – millions of users Data source and more detail

10. Designed by highly qualified researchers NSFNet succeeded because it was …. Financially leveraged A dumb network

11. Seeding Networks: the Federal Role NSFNet project Final Report 1987-1995Final Report 1987-1995 New York Times coverage of the 20 th anniversary of NSFNet20 th anniversary NSFNet resource materialNSFNet resource material from NSF Further reading

12. NSFNet, the first Internet backbone Skills: none IT concepts: backbone network, history of networking This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License.