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.

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

NSFNet backbone, July , 56 kbps

Initial T1 (1.5 Mbps) backbone, July 1988

T1 backbone, 1991

Networks connected to the backbone

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

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

Internet languages – millions of users Data source and more detail

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

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

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.