10
z1988: ARPANET becomes NSFNET
yRegional networks established
yBackbone speed 56kbps
yRoughly 100,000 hosts and 200
networks
z1989: CNRI interconnects MCImail to the
Internet
yWise policy choice
z1990: Backbone speed increased to
1.5Mbps by IBM and MCI
yRoughly 250,000 hosts and 1,500
networks
yNote: There still was “a backbone”!