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Fuzzball router

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Title: Fuzzball router  
Author: World Heritage Encyclopedia
Language: English
Subject: Fuzzball, David L. Mills, Hardware routers, History of telecommunications, National Science Foundation Network
Collection: American Inventions, Hardware Routers, History of Telecommunications
Publisher: World Heritage Encyclopedia

Fuzzball router

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' 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 like variable-length subnet masks.[9]


  1. ^ Carl Malamud (1992). Exploring the Internet: a technical travelogue. Prentice Hall. p. 88.  
  2. ^ Fuzzball: The Innovative Router
  3. ^ [4] Mills, D.L. The Fuzzball. Proc. ACM SIGCOMM 88 Symposium (Palo Alto CA, August 1988), 115-122.
  4. ^ [5] Mills, D.L., and H.-W. Braun. The NSFNET Backbone Network. Proc. ACM SIGCOMM 87 Symposium (Stoweflake VT, August 1987), 191-196
  5. ^ Presentation at the NSFNET Legacy event, 2007. [6] Particularly page 38-48. 'The NSFnet Phase-I Backbone and The Fuzzball Router'- David L. Mills. 29 November 2007.
  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.  
  8. ^ Technical History of NTP 
  9. ^ John T. Moy (1998). OSPF: anatomy of an Internet routing protocol. Addison-Wesley Professional. p. 20.  

External links

  • The Fuzzball, with photographs
  • Fuzzball source code, last update in 1992, 16 megabytes

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