[ih] Correct name for early TCP/IP working group?

Andrew G. Malis agmalis at gmail.com
Sat Jan 25 06:28:32 PST 2025


Jack,

- There was some work however within the ARPANET IMP software to
> acknowledge the need for multiple networks.   For example, some of the
> formats of data as it passed through the ARPANET included fields
> labelled "Network Number".  AFAIK this was never actually fully
> implemented so the ARPANET itself never achieved connectivity between
> multiple networks until TCP was deployed.


As I recall, the ARPANET's "network number" field was used during the
ARPANET/MILNET split to allow logical separation of the IMPs and hosts
sharing the same backbone infrastructure until the physical split could be
completed.

Cheers,
Andy


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