Fuzzball router

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Fuzzball routers were the first modern routers on the Internet.[1] They were DEC LSI-11 computers loaded with the Fuzzball software written by David L. Mills (of the University of Delaware).[2][3] The name "Fuzzball" was the colloquialism for Mills's routing software. Six Fuzzball routers provided the routing backbone of the first 56 kbit/s NSFNET,[4][5] allowing the testing of many of the Internet's first protocols.[6] It allowed the development of the first TCP/IP routing protocols,[7] and the Network Time Protocol.[8] They were the first routers to implement key refinements to TCP/IP such as variable-length subnet masks.[9]

See also[edit]


  1. ^ Carl Malamud (1992). Exploring the Internet: a technical travelogue. Prentice Hall. pp. 88. ISBN 0-13-296898-3.
  2. ^ "Fuzzball: The Innovative Router". Archived from the original on 2011-05-20.
  3. ^ Mills, D.L. (August 1988). The Fuzzball (PDF). ACM SIGCOMM 88 Symposium. Palo Alto, CA. pp. 115–122.
  4. ^ Mills, D.L.; Braun, H.-W. (August 1987). The NSFNET Backbone Network (PDF). ACM SIGCOMM 87 Symposium. Stoweflake, VT. pp. 191–196.
  5. ^ David L. Mills (29 November 2007). "The NSFnet Phase-I Backbone and The Fuzzball Router" (PDF). Presentation at the NSFNET Legacy event, 2007. pp. 38–48.
  6. ^ Fuzzball: A page by David L. Mills, including links to some of his papers on the Fuzzball.
  7. ^ Charles M. Kozierok (2005). The TCP/IP guide: a comprehensive, illustrated Internet protocols reference. No Starch Press. pp. 679–681. ISBN 1-59327-047-X.
  8. ^ "Technical History of NTP", Computer Network Time Synchronization, CRC Press, 2010, pp. 377–396, doi:10.1201/b10282-20, ISBN 978-1-4398-1463-5
  9. ^ John T. Moy (1998). OSPF: anatomy of an Internet routing protocol. Addison-Wesley Professional. p. 20. ISBN 978-0-201-63472-3.

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