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 1986-8, 56 kbps

Initial T1 (1.5 Mbps) backbone, July 1988

T1 backbone, 1991

Networks connected to the backbone

Your tax dollars at work – a good investment

Project

Morse telegraph ARPANet CSNET NSFNet backbone NSF US higher education connections NSF international connections

Cost ($Million)

.03

25 5 57.9

30 6

123.93

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

Internet languages – millions of users Data source and more detail

NSFNet succeeded because it was ….

Financially leveraged Designed by highly qualified researchers A dumb network

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

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.