OT: cat 5 cable, ethernet, connection jacks

Matt Price matt.price-H217xnMUJC0sA/PxXw9srA at public.gmane.org
Thu Mar 24 22:29:50 UTC 2005


On Thu, Mar 24, 2005 at 03:42:39PM -0500, John Macdonald wrote:
> On Thu, Mar 24, 2005 at 12:19:13PM -0500, Lennart Sorensen wrote:
> > On Thu, Mar 24, 2005 at 12:13:26PM -0500, Matt Price wrote:
> > > Hope it's ok if I ask a networking question here... I'm planning to
> > > lay a bunch of ethernet cable in a room.  I have these fancy Leviton
> > > RJ45 female jacks and am running the cable through wolding, so having
> > > many cables come out of a hub is a royal pain.  The computers in the
> > > room are arrayed along a straight line.  Is it at all possible to use
> > > the RJ45 jack as a simple junction connecting two pieces of cat 5
> > > cable?  This would look something like this:
> > > 
> > > 
> > > |hub|--------------|rj45 plug|-----------------|rj45 plug|
> > > 		      |				  |
> > > 		      |				  |
> > > 		      |				  |
> > > 		 Computer		       Computer	       
> > > 
> > > I imagine this is impossible, or people would do it all the time
> > > instead of using hubs...  anyway, if someone can explain to me at
> > > least why it doesn't work, that'd be a help.
> > 
> 
> One suggestion that I don't think anyone else has made is that
> if the ASCII picture is correct you could replace the rj45 plug
> in the middle with two rj45 plugs, one connected to the cable
> that comes from the hub, the other to the cable that runs to
> the room on the right.  Then, instead of connecting directly to
> the computer in the middle room, connect them both to a switch
> (or hub) - the cable from the originating hub going to the
> uplink port (if the switch doesn't autosense).  Add a third
> connection from the new switch to the computer and you're set.
> This method means (1) you don't have to redo the existing
> wiring, just one wall plug, and (2) you don't have to make
> your own rj45 plugs (that takes a special crimping tool and
> a small amount of experience - the wall socket just takes a
> screwdriver and keeping track of which colour wires need to
> be used).  If you use an autosensing switch, you won't need
> to figure out which of the two cables is from the hub and
> which goes on to the next room - they both would just plug
> into random ports on the switch anyhow.
> 
> 

ahh.  that's a great idea, I think I will do that.  (somves my main
problem, which was how-to-cram-another-cable-into-the-wire-moulding)
Now I just need to find a small, cheap hub that I can mount
unobtrusively on the wall somehow (suggestions?).

matt


-------------------------------------------
Matt Price	    matt.price-H217xnMUJC0sA/PxXw9srA at public.gmane.org
History Department, University of Toronto
(416) 978-2094
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