Re: computer network question
- From: "John Howells" <john@xxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 14 Apr 2006 20:17:03 +0100
"Bill Wright" <insertmybusinessname@xxxxxxx> wrote
This is an example of how you get drawn into things! The customer is
building a new house and wants to be sure that it is future proof. He
intends to run a CAT 5 cable from a central hub (in the loft) to each and
every place where he might put a computer. Questions:
1. Is this the right way to do it?
Yes. Preferably using a switch rather than a hub (though I assume "hub" in
this case was used in its colloquial sense), and that a wireless solution is
not appropriate (the actual bit-rate can be *MUCH* less than advertised! OK
for browing the internet, but poor and variable for bulk file transfers
between local computers compared to a wired solution.).
2. If he has two computers in the same room does he need two separate
cables?
If he is prepared to use a second hub or switch in that room (they are
*VERY* cheap and small these days), then a single cable will do. See, for
example http://www.scan.co.uk/Products/ProductInfo.asp?WebProductID=152509
at just £7.86 if 100Mb/s is adequate (which it usually is) or
http://www.scan.co.uk/Products/ProductInfo.asp?WebProductID=167187 if Gbit
is needed.
If he does not want a second switch in that room then either two cables will
be needed from the loft "hub", or you can use a single cable and one of
these
http://www.maplin.co.uk/Module.aspx?ModuleNo=22423&criteria=rj45&doy=14m4 at
each end (so the loft "hub" still sees two connections). Up to 100Mb/s only
four of the eight wires in Cat5 are used. This adapter allows two
connections via one cable, by using the otherwise unused four wires, though
I don't like their use under normal circumstances as a permanent solution.
If he knows there will be two computers he may as well lay in two cables
from the start, but an additional "room" switch means more ports can be
easily added in a room later, if needed to cater for the unexpected, using a
cheap switch.
John Howells
.
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