Hubert Zimmermann

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Hubert Zimmermann
Born(1941-11-15)November 15, 1941
DiedNovember 9, 2012(2012-11-09) (aged 70)
Alma materTélécom ParisTech
École Polytechnique
Scientific career
FieldsComputer Science

Hubert Zimmermann (15 November 1941 – 9 November 2012) was a French software engineer and a pioneer of computer networking.


Zimmermann was educated at École Polytechnique and École Nationale Supérieure des Télécommunications.[1] His career began at Institut National de Recherche en Informatique et Automatique (INRIA) in Rocquencourt from 1972 through 1979, where he led research into what became ChorusOS series of distributed operating systems.[2] He participated in the International Networking Working Group from 1972, initially chaired by Vint Cerf.[3] He was acknowledged by Bob Kahn and Cerf in their 1974 paper on internetworking, "A Protocol for Packet Network Intercommunication".[4] In 1977, he was an early member of the International Organization for Standardization as it developed the Open Systems Interconnection protocols.[3]

He then worked for France Télécom in 1980 through 1986. He developed and promoted the OSI reference model which became a popular way to describe network protocols, and published a paper on the model in 1980 and one with John Day in 1983.[5][6] He was a founder of Chorus Systèmes SA in 1986, which commercialised the Chorus distributed microkernel operating system that had been created at INRIA.[7] Chorus Systèmes was purchased by Sun Microsystems in 1997, where he was director of telecom software engineering for 5 years. Then he invested in entrepreneurial high-tech companies such as Arbor Venture Management, Boost Your StartUp, Gingko Networks and UDcast.[8]

In 1991, Zimmermann was awarded the SIGCOMM Award for "20 years of leadership in the development of computer networking and the advancement of international standardization".[9]

On 9 November 2012, Zimmermann died in France.[10]

See also[edit]


  1. ^ "Connect-World Asia-Pacific I 2007". Archived from the original on 13 March 2008. Retrieved 2 August 2013.
  2. ^ M. Rozier; V. Abrossimov; F. Armand; I. Boule; M. Gien; M. Guillemont; F. Herrmann; C. Kaiser; S. Langlois; P. Leonard; W. Neuhauser (1991). "Overview of the CHORUS Distributed Operating Systems" (PDF). Chorus systemes. Archived from the original (PDF) on 7 February 2015. Retrieved 30 July 2013.
  3. ^ a b Andrew L. Russell (30 July 2013). "OSI: The Internet That Wasn't". IEEE Spectrum. Vol. 50, no. 8.
  4. ^ Cerf, V.; Kahn, R. (1974). "A Protocol for Packet Network Intercommunication" (PDF). IEEE Transactions on Communications. 22 (5): 637–648. doi:10.1109/TCOM.1974.1092259. ISSN 1558-0857. The authors wish to thank a number of colleagues for helpful comments during early discussions of international network protocols, especially R. Metcalfe, R. Scantlebury, D. Walden, and H. Zimmerman; D. Davies and L. Pouzin who constructively commented on the fragmentation and accounting issues; and S. Crocker who commented on the creation and destruction of associations.
  5. ^ Hubert Zimmermann (April 1980). "OSI Reference Model—The ISO Model of Architecture for Open Systems Interconnection". IEEE Transactions on Communications. 28 (4): 425–432. doi:10.1109/TCOM.1980.1094702. S2CID 16013989.
  6. ^ John D. Day; Hubert Zimmermann (December 1983). "The OSI reference model". Proceedings of the IEEE. 71 (12): 1334–1340. doi:10.1109/PROC.1983.12775. S2CID 30875675.
  7. ^ Rozier, M.; V. Abrossimov; F. Armand; I. Boule; M. Gien; M. Guillemont; F. Herrmann; C. Kaiser; S. Langlois; P. Leonard; W. Neuhauser (Fall 1988). "CHORUS Distributed Operating Systems" (PDF). USENIX Computing Systems: 305–370.
  8. ^ "Hubert Zimmermann nous a quittés!". Alumni page. INRIA. Archived from the original on 2013-01-16. Retrieved 30 July 2013.
  9. ^ "SIGCOMM '99 - Awards Panel Member". Retrieved 2009-04-25.
  10. ^ Michel Gien, forwarded by John Day (11 November 2012). "Very Sad News". Internet History Mailing list. Retrieved 30 July 2013.