servies;550696 Wrote: 
> The 100 meter maximum for UTP is based on the signal quality that's left
> after 100 meters... Maybe someone else whose native language is English
> can explain better...
Sorry but it's not. Even with ancient wiring, signal quality is fine
after this distance. Try it - scopes are cheap and handheld these days.
That's not the issue.

The issue is timing and the "length" of the packet (literal length, as
in the length of wire the packet occupies, given the speed of electrons
in a conductor).
Yes, having only two parties will make collisions less likely. And with
only two parties you could likely go half-duplex successfully (yes it
cuts your bandwidth in half, but it should also remove most or all of
the collision issue.

I would ask one question: have you actually strung a longer-than 100m
length of network cable? I have, both the "ancient" types and the
CAT5/5e/6. My experience is that you get lots of collisions, even
though an injected signal scopes out just fine. Even a TDR shows no
problem end to end.

So... go read up - or break out, say 600' of your preferred UTP, stick
it between two switches and see how that works. If they're smart
switches, you can get collision reports without any other gear.


-- 
bobkoure
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