Re: Extending cable range

In article <Xns96C465DC8A6ABjohncceuroplacercouk@xxxxxxxxxxxx>,
John Carlyle-Clarke <john.cc@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
:Dees anyone know if there's any reason why I can't use a hub or switch
:(hard to buy hubs nowadays!) to extend the reach of a single ethernet
:cat5e cable run? I need to go to about 150m to reach one outlying
:machine.

Others have mentioned Cisco's LRE (which is expensive in absolute terms,
but possibly cheaper than the reliable alternatives.)

Several months back, someone reported here that they had been able to
successfully use runs up to something like 200m [I do not recall the
exact distance.]

If I understand correctly, if you were to work at 10BaseT instead of
100BaseT then the practical distances are a bit longer -- with
the bit being on the wire for so much longer, high-frequency
electrical noise has less effect.


:I imagined that you would be able to buy something designed
:specifically for this job... a little range extender/repeater (i.e. 2
:port hub) that you could fit inline, possibly even powered by a power
:over ethernet module. However, I can't find such a thing. Anyone
:know of one?

I see a few that run over 2-wire (including voice grade); some
of them have direct RJ45 inputs for the LAN portion. If you were to
wire appropriate connectors to the ends of the cat5e run, you could
plug those into the output of the extenders; the extra wires would
simply be irrelevant to the link. Or you could wire several of the
devices over the same cat5e run, using different pairs ;-)
--
"I want to make sure [a user] can't get through ... an online
experience without hitting a Microsoft ad"
-- Steve Ballmer [Microsoft Chief Executive]
.

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