[svlug] help transfering data over 1394 cable

[Rick Moen]

Quoting Daniel Gimpelevich (daniel at gimpelevich.san-francisco.ca.us):

> Note how the page is marked as not citing references or sources. IME,
> what it does mention of duplex is factually incorrect.

There's no reason you should not be able to get full duplex mode on a
crossover cable, though you might have to force the ports into that mode
using appropriate software, as autonegotiation might fail (as it often
does, anyway).  Think about it:  You have all the signals required.

If in your experience you weren't able to get full duplex, and you _did_
try "locking" the ports to that mode, then I rather suspect the problem's
with one of the ports, rather than any inherent inability to do full
duplex over crossover cables.

> That's why I said "wiring standard for crossover cables." Last I checked,
> nobody sold ready-made GigE crossover cables;

I frankly wouldn't know, because I've always just make then when I
needed them.  It's not like it's difficult.

Anyhow, with reasonable luck, the need for crossover cables has gone
with the buggy-whips, now that MDI / MDI-X autosensing seems to have
caught on.