> Len Gross wrote:
> > Thanks so much for the response. Here is some additional information.
> >
> > I'm trying to emulate an RF network where there are colisions (e.g. "Aloha"
> > type protocol) so I actually need collisions! I had forgotten that modern
> > hardware
> > essentially eliminated them. So, lets say I can find/use an "old hub",
> > can I control the number of retries? Maybe I have to find some old NICs and
> > old drivers?
> That would be very NIC specific. Retries are done in NIC hardware as far
> as i know.
The last NICs that I remember with control over retries were some
of the original 3Com NICs. They supported only 10Base5, the original
thick coax Ethernet (remember vampire taps?). They plugged into a
Unibus on a VAX, or a PDP-11 I suppose. I think they were about
$3000 each at the time.
Mike
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