Fuzzball routers were the first modern
routers on the
Internet
The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a '' network of networks'' that consists of private, pub ...
.
[ They were DEC PDP-11 computers (usually ]LSI-11
The PDP-11 is a series of 16-bit minicomputers sold by Digital Equipment Corporation (DEC) from 1970 into the 1990s, one of a set of products in the Programmed Data Processor (PDP) series. In total, around 600,000 PDP-11s of all models were sold, ...
personal workstations) loaded with the Fuzzball software written by David L. Mills (of the University of Delaware
The University of Delaware (colloquially UD or Delaware) is a public land-grant research university located in Newark, Delaware. UD is the largest university in Delaware. It offers three associate's programs, 148 bachelor's programs, 121 ma ...
).[ It acquired the nickname sometime after it was rewritten in 1977.][
Six Fuzzball routers provided the routing backbone of the first 56 kbit/s ]NSFNET
The National Science Foundation Network (NSFNET) was a program of coordinated, evolving projects sponsored by the National Science Foundation (NSF) from 1985 to 1995 to promote advanced research and education networking in the United States. The p ...
,[ allowing the testing of many of the ]Internet
The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a '' network of networks'' that consists of private, pub ...
's first protocols.[ It allowed the development of the first TCP/IP routing protocols,][ and the Network Time Protocol.][ They were the first routers to implement key refinements to TCP/IP such as variable-length ]subnet mask
A subnetwork or subnet is a logical subdivision of an IP network. Updated by RFC 6918. The practice of dividing a network into two or more networks is called subnetting.
Computers that belong to the same subnet are addressed with an identical ...
s.[
]
See also
* Interface Message Processor
The Interface Message Processor (IMP) was the packet switching node used to interconnect participant networks to the ARPANET from the late 1960s to 1989. It was the first generation of gateways, which are known today as routers. An IMP was a ...
References
External links
The Fuzzball
with photographs
last update in 1992, 16 megabytes
{{compu-network-stub
American inventions
Hardware routers
History of telecommunications