Brief History of Networking 1830: telegraph 1876: telephone (circuit-switching) 1960 s: packet switching Arpanet has 4 nodes 1970 s: companies: DECnet, IBM SNA Arpanet has 100 nodes 1980 s: local area networks late 80 s: 100 Mbps proliferation of wide area networks: CSNET, MILNET, NSFNET, ARPANET Internet passes 100,000 nodes in 1989 1990 s Arpanet, NSF retired: gov t no longer provides backbone service explosive growth: 10 million hosts in 1996 150Mbps, 660 Mbps wireless networks WWW drives Internet mania current trends: continued expansion commercialization security
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