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

[vinton cerf]

Thanks for that, Andy - I had not realized that this was used as a
scaffolding - must have affected routing in some way and created a kind of
gateway IMP notion for IMPs lying along a border between two connected
subsets?

v


On Sat, Jan 25, 2025 at 9:28 AM Andrew G. Malis via Internet-history <
internet-history at elists.isoc.org> wrote:

> 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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