The Pankian Metaphor 3183
ARPANET required dedicated 56kbit links, expensive IMPs, homogeneous operation (based on the IMP boxes) and lots of inter-IMP chatter (I remember some joke in the late 70s about the IMPs required 56kbit links because as the number of nodes were scaling over 200, majority of the bandwidth could be going for inter-IMP control traffic).
ref: note that during the period, the internal network wasn't exactly public-commercial network ... it was purely the internal corporate network that interconnected internal corporate sites around the world...
in some respects ISO OSI networking standard homogeneous operation and ARPANET homogeneous operation were similar. the big change was the switch-over to internetworking protocol on 1-1-83 (internets, gateways, etc). i've frequently contended that the internal network
was larger than the arpanet-internet (from just about the beginning until sometime mid-85) was because internal network nodes had something akin to gateway technology from the beginning (making heterogeneous interoperability a lot easier). at the time of the big switch-over the arpanet was approx. 250 nodes. By comparison, later that same year, the internal network celebrated its 1000th node
various collected networking postings, many referencing how OSI homogeneous operation and lack of internetworking severely limited ISO networking standards
the other big change wasn't so much protocol technology (that enabled gateways and backbone for inter-networking) ... but the actual deployment of an operational backbone for inter-networking with nsfnet1. minor comment about not being allowed to bid on nsfnet1
various other posts mentiong nsfnet backbone:
for lots more drift ... in this period i was into high availability, fault isolation ... in part having helped with the clustering and availability stuff...
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