Rémi Després
Encyclopedia
Rémi Després is a French engineer
and entrepreneur
known for his contributions on Data networking
.
At UC Berkeley
, he received a master's degree
in 1967, and a Ph.D degree
in 1969, both in the EECS Department.
and UC Berkeley
, he specialized in programming language
s and time-sharing
operating systems.
From 1971 to 1980, Rémi Després was in charge of R&D
of the French PTT
on packet switching
. As such, he clarified and formalized the concept of Virtual Circuits
. With his team at CNET
, he validated it on the RCP experimental network. He then successfully submitted for the X.25 Recommendation
of CCITT, the standard of Data networks of the 1970s-1980's. He was the first Chief Technical Officer in charge of the French Transpac network whose X.25
service has been operational from 1978 to 2011.
After working one year for Cap Gemini Sogeti
, and four years for SESA, Rémi Després founded in 1985 the LAN
and Frame-Relay
-products enterprise RCE, a company acquired in 1996 by the CS Group. In 1998, he founded a second startup, StreamCore SA, specialized in Quality of service
management in TCP/IP, the Internet
technology. When Streamcore SA was terminated in 2003, its StreamGroomer products were taken over by a new company, Streamcore Systems SA
.
Since 2003, Rémi Després has been working as an independent researcher and consultant, mainly contributing to IETF
to facilitate deployment of IPv6
, the protocol
that had become necessary to extend the number of customer addresses of Internet
. In particular, he invented and promoted 6rd, a mechanism whereby FREE, an Internet Service Provider
, deployed IPv6 service several years before similar network operators, and in only five weeks (RFC 5569). Another notable contribution concerned 4rd, a technology to maintain a residual IPv4
service across IPv6-only networks. He also proposed a mechanism for Internet Service Providers
to assign IPv6 addresses into customer sites that still have IPv4-only residential gateway
s, with the distinctive feature that IPv6 traffic between devices of a same site remains within this site. In 2011 Rémi Després and Alexandre Cassen received the Itojun Service Award for their IPv6
work.
Engineer
An engineer is a professional practitioner of engineering, concerned with applying scientific knowledge, mathematics and ingenuity to develop solutions for technical problems. Engineers design materials, structures, machines and systems while considering the limitations imposed by practicality,...
and entrepreneur
Entrepreneur
An entrepreneur is an owner or manager of a business enterprise who makes money through risk and initiative.The term was originally a loanword from French and was first defined by the Irish-French economist Richard Cantillon. Entrepreneur in English is a term applied to a person who is willing to...
known for his contributions on Data networking
Public Data Network
A public data network is a network established and operated by a telecommunications administration, or a recognized private operating agency, for the specific purpose of providing data transmission services for the public....
.
Education
In 1961-1963, Rémi Després attended École Polytechnique of Paris, of which he holds an Engineer degree.At UC Berkeley
University of California, Berkeley
The University of California, Berkeley , is a teaching and research university established in 1868 and located in Berkeley, California, USA...
, he received a master's degree
Master's degree
A master's is an academic degree granted to individuals who have undergone study demonstrating a mastery or high-order overview of a specific field of study or area of professional practice...
in 1967, and a Ph.D degree
Ph.D.
A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...
in 1969, both in the EECS Department.
Career
From 1963 to 1971 at CNETCentre national d'études des télécommunications
CNET or Centre national d'études des télécommunications was a French national research centre in telecommunications....
and UC Berkeley
University of California, Berkeley
The University of California, Berkeley , is a teaching and research university established in 1868 and located in Berkeley, California, USA...
, he specialized in programming language
Programming language
A programming language is an artificial language designed to communicate instructions to a machine, particularly a computer. Programming languages can be used to create programs that control the behavior of a machine and/or to express algorithms precisely....
s and time-sharing
Time-sharing
Time-sharing is the sharing of a computing resource among many users by means of multiprogramming and multi-tasking. Its introduction in the 1960s, and emergence as the prominent model of computing in the 1970s, represents a major technological shift in the history of computing.By allowing a large...
operating systems.
From 1971 to 1980, Rémi Després was in charge of R&D
Research and development
The phrase research and development , according to the Organization for Economic Co-operation and Development, refers to "creative work undertaken on a systematic basis in order to increase the stock of knowledge, including knowledge of man, culture and society, and the use of this stock of...
of the French PTT
Postes, télégraphes et téléphones (France)
Postes, télégraphes et téléphones was the French public administration of postal services and telecommunications. Formed in 1921, it was split in 1991 into La Poste and France Télécom....
on packet switching
Packet switching
Packet switching is a digital networking communications method that groups all transmitted data – regardless of content, type, or structure – into suitably sized blocks, called packets. Packet switching features delivery of variable-bit-rate data streams over a shared network...
. As such, he clarified and formalized the concept of Virtual Circuits
Virtual circuit
In telecommunications and computer networks, a virtual circuit , synonymous with virtual connection and virtual channel, is a connection oriented communication service that is delivered by means of packet mode communication...
. With his team at CNET
Centre national d'études des télécommunications
CNET or Centre national d'études des télécommunications was a French national research centre in telecommunications....
, he validated it on the RCP experimental network. He then successfully submitted for the X.25 Recommendation
X.25
X.25 is an ITU-T standard protocol suite for packet switched wide area network communication. An X.25 WAN consists of packet-switching exchange nodes as the networking hardware, and leased lines, Plain old telephone service connections or ISDN connections as physical links...
of CCITT, the standard of Data networks of the 1970s-1980's. He was the first Chief Technical Officer in charge of the French Transpac network whose X.25
X.25
X.25 is an ITU-T standard protocol suite for packet switched wide area network communication. An X.25 WAN consists of packet-switching exchange nodes as the networking hardware, and leased lines, Plain old telephone service connections or ISDN connections as physical links...
service has been operational from 1978 to 2011.
After working one year for Cap Gemini Sogeti
Capgemini
Capgemini is a French global IT services company, one of the world's largest management consulting, outsourcing and professional services companies with a staff of 114,274 operating in 40 countries. It is headquartered in Paris and was founded in 1967 by Serge Kampf, the current chairman, in...
, and four years for SESA, Rémi Després founded in 1985 the LAN
Local area network
A local area network is a computer network that interconnects computers in a limited area such as a home, school, computer laboratory, or office building...
and Frame-Relay
Frame relay
Frame Relay is a standardized wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology...
-products enterprise RCE, a company acquired in 1996 by the CS Group. In 1998, he founded a second startup, StreamCore SA, specialized in Quality of service
Quality of service
The quality of service refers to several related aspects of telephony and computer networks that allow the transport of traffic with special requirements...
management in TCP/IP, the Internet
Internet
The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide...
technology. When Streamcore SA was terminated in 2003, its StreamGroomer products were taken over by a new company, Streamcore Systems SA
Streamcore
Streamcore is an information technology company specializing in Quality of Service , controlling/monitoring Unified Communications and application delivery management over the Wide area network . Its headquarters are located in Puteaux, France, with offices in Germany, Africa, and the Middle...
.
Since 2003, Rémi Després has been working as an independent researcher and consultant, mainly contributing to IETF
Internet Engineering Task Force
The Internet Engineering Task Force develops and promotes Internet standards, cooperating closely with the W3C and ISO/IEC standards bodies and dealing in particular with standards of the TCP/IP and Internet protocol suite...
to facilitate deployment of IPv6
IPv6
Internet Protocol version 6 is a version of the Internet Protocol . It is designed to succeed the Internet Protocol version 4...
, the protocol
Communications protocol
A communications protocol is a system of digital message formats and rules for exchanging those messages in or between computing systems and in telecommunications...
that had become necessary to extend the number of customer addresses of Internet
Internet
The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide...
. In particular, he invented and promoted 6rd, a mechanism whereby FREE, an Internet Service Provider
Internet service provider
An Internet service provider is a company that provides access to the Internet. Access ISPs directly connect customers to the Internet using copper wires, wireless or fiber-optic connections. Hosting ISPs lease server space for smaller businesses and host other people servers...
, deployed IPv6 service several years before similar network operators, and in only five weeks (RFC 5569). Another notable contribution concerned 4rd, a technology to maintain a residual IPv4
IPv4
Internet Protocol version 4 is the fourth revision in the development of the Internet Protocol and the first version of the protocol to be widely deployed. Together with IPv6, it is at the core of standards-based internetworking methods of the Internet...
service across IPv6-only networks. He also proposed a mechanism for Internet Service Providers
Internet service provider
An Internet service provider is a company that provides access to the Internet. Access ISPs directly connect customers to the Internet using copper wires, wireless or fiber-optic connections. Hosting ISPs lease server space for smaller businesses and host other people servers...
to assign IPv6 addresses into customer sites that still have IPv4-only residential gateway
Residential gateway
A residential gateway is a home networking device, used as a gateway to connect devices in the home to the Internet or other WAN.It is an umbrella term, used to cover multi-function networking computer appliances used in homes, which may combine a DSL or cable modem, a firewall, a consumer-grade...
s, with the distinctive feature that IPv6 traffic between devices of a same site remains within this site. In 2011 Rémi Després and Alexandre Cassen received the Itojun Service Award for their IPv6
IPv6
Internet Protocol version 6 is a version of the Internet Protocol . It is designed to succeed the Internet Protocol version 4...
work.