On Sat, 5 Oct 1996, Andrew Y Ng wrote:

> > Have you tried them at 10 Mbps? I have two 3c595s, and I see this
> > at 10 Mbps. I've not tried it at 100 Mbps, though I will soon.
> 
> Too bad CMU doesn't have 100Mbps at this piont, but we'r getting there.

If you have two machines with these cards, just hook them up to
each other with a crossover cable and see how it goes.

> > Also, how fast are your machines? 
> fyi, I have a Pentium Pro 200, with 64 M of RAM, I prolly mentioned this in
> one of my former posts.

I'd really like to see how a pair of these perform at 100 Mbps
under heavy load. If the driver doesn't lock up at 100 Mbps with
a pair of really fast machines hammering on it, that probably
indicates a difference in card behaviour at the two speeds.
> 
> > There was a recent patch to the FreeBSD driver to fix a problem
> > that sounds similar to ours...
> 
> I setup FreeBSD for my friend, we might switch cards temporarily if the 3c590
> works on his server.  (rocket.res.cmu.edu).

I don't hold much hope. I just got mail from David Greenman about
this, and the fix I was looking at was backed out because it broke
more people than it fixed. He says that the FreeBSD vx (3c59x)
driver (they seem to have separate drivers for the ISA/EISA and
PCI 3Com cards) still has this problem or a similar one.

cjs

Curt Sampson    curt@portal.ca		Info at http://www.portal.ca/
Internet Portal Services, Inc.	
Vancouver, BC   (604) 257-9400		De gustibus, aut bene aut nihil.