[ih] ARPANET uncontrolled packets (was: GOSIP & compliance)

[vinton cerf]

thanks for that bit of precision, Steve! I am guilty of that "summary" too
v


On Mon, Apr 4, 2022 at 1:58 AM Stephen Casner via Internet-history <
internet-history at elists.isoc.org> wrote:

> On Sun, 3 Apr 2022, Jack Haverty via Internet-history wrote:
>
> > UDP defined a "datagram mode" somewhat analogous to the ARPANET's
> > "uncontrolled packets" ("type 3" IIRC).  The ARPANET operators at BBN
> were
> > staunchly opposed to allowing such packets to be used, for fear that they
> > would seriously disrupt the normal "virtual circuit" mechanisms internal
> to
> > the ARPANET structure.  So "datagrams" on the ARPANET, while possible,
> were
> > only rarely permitted, for specific experiments, between specific Hosts.
>
> I have often seen/heard the ARPANET uncontrolled packets referenced as
> "type 3", e.g. by our late Danny Cohen.  But they were actually "type
> 0, subtype 3".  I remember implementing that for packet voice.  Check
> BBN 1822 pp. 3-14 and 3-35.
>
>                                                         -- Steve
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