[ih] Global congestion collapse

[Craig Partridge]

In message <87r7lt7gpp.fsf at snark.piermont.com>, "Perry E. Metzger" writes:

>Interesting. Bellcore switched from a 56k link to the IMP at Columbia
>to NSFnet towards the end (latter half?) of that time, but I can't
>remember if the horrible congestion was before or after our switch.

ARPANET had trouble too.  I remember much tuning.

>Either way, though, it was pretty shortly thereafter that I remember
>getting my first replacement .o files with yummy new TCP congestion
>control algorithms in them.

That would have been Van's TCP mods (described in the SIGCOMM '88 paper).
It was astonishing how big a difference they made.

Craig