Interface Message Processor

E1033

The Interface Message Processor was the pioneering packet-switching node that formed the backbone of the early ARPANET, serving as a precursor to modern internet routers.

All labels observed (3)

How this entity was disambiguated

Statements (48)

Predicate Object
instanceOf ARPANET node
computer network device
packet-switching node
precursor to internet router
alsoKnownAs IMP
basedOn Honeywell DDP-516 minicomputer
communicationMedium leased telephone lines
connectedHost Stanford Research Institute
UCLA Network Measurement Center
University of California, Santa Barbara
University of Utah
connects host computers
other Interface Message Processors
countryOfOrigin United States of America
surface form: United States
designedAs reliable subnetwork for ARPANET hosts
designedBy BBN networking team
Frank Heart
developedBy Bolt Beranek and Newman
surface form: BBN Technologies

Bolt Beranek and Newman
developedFor ARPANET
firstDeployed 1969
firstSite University of California, Los Angeles
surface form: UCLA

University of California, Los Angeles
fundedBy Defense Advanced Research Projects Agency
surface form: ARPA

Defense Advanced Research Projects Agency
surface form: Advanced Research Projects Agency
hardwarePlatform Honeywell DDP-516
historicalSignificance formed backbone of early ARPANET
pioneering packet-switching node
precursor to modern internet routers
implements error control mechanisms
flow control mechanisms
packet switching
routing algorithms
store-and-forward communication
inspired later router architectures
managedBy Bolt Beranek and Newman
surface form: BBN Network Operations Center

Network Control Center
maxHostsPerIMP 4
networkRole packet switch
store-and-forward node
operationalLayer subnetwork layer below host protocols
packetSize fixed-size packets
partOf early Internet infrastructure
replacedBy modern internet routers
status obsolete
usedInNetwork ARPANET
usedProtocol 1822 protocol
early ARPANET host-to-IMP protocol

How these facts were elicited

Referenced by (9)

Full triples — surface form annotated when it differs from this entity's canonical label.

Bolt Beranek and Newman notableWork Interface Message Processor
Bolt Beranek and Newman developed Interface Message Processor
ARPANET usesTechnology Interface Message Processor
IMP alsoKnownAs Interface Message Processor
NCP operatedOver Interface Message Processor
this entity surface form: Interface Message Processors
ARPANET Interface Message Processor platform alsoKnownAs Interface Message Processor
this entity surface form: Interface Message Processor system
BBN Technologies developed Interface Message Processor
Host-to-Host Protocol operatedOver Interface Message Processor
this entity surface form: Interface Message Processors
Honeywell 316 minicomputer usedAs Interface Message Processor