history互联网历史.ppt

history互联网历史-1 2: History Last Modified: 2/23/2017 7:42:36 PM -2 How did the e to be? r It started as a research project to experiment with puters together with packet works. It was developed with funding and leadership of the Defense Department ’ s Advanced Research Projects Agency (ARPA). -3 Who invented the ? r Al Gore? No ? r Leonard Kleinrock who did early work in packet switching? r Vint Cerf and Robert Kahn who defined the " Protocol" (IP) and participated in the development of TCP? r Tim Berners-Lee who developed HTTP to support a global hyper-text system he called the World Wide Web? ( vs the World Wide Web?) -4 1958-1961: puters? r 1958 – After USSR launches Sputnik, first artificial earth satellite, US forms the Advanced Research Projects Agency ( ARPA ), the following year, within the Department of Defense (DoD) to establish US lead in science and technology applicable to the military r 1961 – First published work on packet switching (“ Information Flow in s ”, Leonard Kleinrock, MIT graduate student) r 1964 – other independent work in packet switching at RAND Institute and National Physics Laboratory in England -5 1966 – 1968: Connect Computers? Funded r 1966 – Lawrence Roberts (colleague of Kleinrock from MIT) publishes overall plan for an , a proposed packet switch network r 1968 – ARPA awards contracts for four nodes in to UCLA (Network Measurement), Stanford Research Institute (Network Information Center), UCSB (Interactive Mathematics) and U Utah (Graphics); BBN gets contract to build the IMP switches -6 1969: First Connections r 4/7/1969 – First RFC ( “ Host Software ” by Steve Crocker) basis for work Control Protocol(NCP) r 9/2/1969 – Leonard Kleinrock ’ puter at UCLA es first node on the r 10/29/1969 – First packets sent; Charlie Kline attempts use of remote login from UCLA to SRI; system crashes as “G” in entered -7 1967-1971: So what do we do with it? r 1967-1972 – Vint Cerf, graduate student