[ih] Failures of the early Internet

[vinton cerf]

was NYNET distinct from NYSERNET?

v


On Sat, Jan 20, 2024 at 1:50 PM Scott Brim via Internet-history <
internet-history at elists.isoc.org> wrote:

> On Fri, Jan 19, 2024 at 9:20 PM Jack Haverty via Internet-history <
> internet-history at elists.isoc.org> wrote:
>
> > Another incident I recall was also a routing issue.  I don't remember
> > exactly where it happened, but two sites, universities IIRC, were
> > collaborating on some research project and had a need to send data back
> > and forth.  Their pathway to each other through the Internet was
> > somewhat long and often congested.   So they decided to fix the problem
> > by installing a circuit directly between their two campus' routers.
> >
> > Money was of course an issue, but they found the funds to pay for a 9.6
> > kb/s line.  They were surprised to observe that the added line only made
> > things worse.  File transfers took even longer than before.  Of course
> > their change to the topology of the Internet had unexpectedly made their
> > 9.6 line the best route for all sorts of Internet traffic unrelated to
> > their project.
> >
>
> That might have been us, and if so it's another tie-in for Dave Mills. In
> early January 1987 we lit up the first link in what was to be NYNET (New
> York), between Cornell Theory Center and Columbia IT. We figured Cornell
> would be a gateway for all of NYNET to the budding NSFNet. However, at that
> time both Cornell and Columbia CS were connected to ARPAnet, and Columbia
> CS was announcing a static route to HP (net 16) to its campus, for some
> project in a department. At Cornell we believed everything we received, so
> we forwarded Columbia's route to the rest of our campus, thus to our CS
> Arpanet connection, and onward. There was no route filtering anywhere. We
> discovered the HP routing loop pretty quickly and shut down dynamic
> routing. Acouple weeks later we were meeting with Dave, probably at UDel,
> and he said "we have to have bidirectional route filtering", and thus the
> gated project was born.
>
> Scott
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