Thomas E. Keiser on Mon, 23 Aug 1999 14:00:31 -0400 (EDT)


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Re: [Plug] Linux/W95 LAN


Nick:

    I have a sort-of expensive cable tester (about $700) that does a couple of
dozen tests on a cable from end to end. If any of the tested parameters are out
of range, the cable won't work -- especially at 100mbps. Things like bend
radius, amount of wire untwisted at the connecter, etc., can render a cable
useless. It would be nice if this were just a doorbell circuit, but it's a very
sophisticated transmission channel for high freq signals. Link lights mean very
littlle.

Tom

Nick R wrote:

> None taken. But what exactly makes cables not work? Assuming that the little
> light on the hub goes on, then it's just gotta be too high resistance,
> right? What's the maximum resistance that you can have for them to still
> work for 10Base-T? How about 100 Base-T? That's something that I can test
> for easily.
>
> >From: "Thomas E. Keiser" <tek@teklogic1.com>
> >Reply-To: plug@lists.nothinbut.net
> >To: plug@lists.nothinbut.net
> >Subject: Re: [Plug] Linux/W95 LAN
> >Date: Sun, 22 Aug 1999 23:30:34 -0400
> >
> >If you made your own cables using traditional fittings, it's fairly likely
> >(don't
> >take this personally) they won't work. I say this based upon years of
> >trying to do
> >this, and finally going to pre-made patch cables, and using Panduit
> >mini-com
> >connectors for in-wall wiring. Even if you only value your own time at
> >$5/hour,
> >this makes sense.
> >
> >John Nolan wrote:
> >
> > > >
> > > > Well all of these are cables I made so I don't have any proof that any
> >of
> > > > them work and I don't have anything to hook them up to that I know
> >works on
> > > > the software side. One of them even runs up through my ceiling, in my
> >attic,
> > > > and then back downstairs. I doubt I could get it out.
> > >
> > > If you can't remove the cables and hook them to another network,
> > > then borrow some (working) cables from someone, and set up your
> > > network using those cables first.   Move your computers into
> > > the same room temporarily just so that you can do this,
> > > hook them up with your friend's cables, and then tinker with
> > > the network settings.  When everything is working properly,
> > > then shut your computers down and reconnect them using your wires.
> > >
> > > --
> > > ##--------------------------------
> > > ##  John Nolan
> > > ##  jpnolan op net
> > > ##--------------------------------
> > >
> > > _______________________________________________
> > > Plug maillist  -  Plug@lists.nothinbut.net
> > > http://lists.nothinbut.net/mail/listinfo/plug
> >
> >--
> >************************************************
> >Thomas E. Keiser
> >tek@teklogic1.com
> >
> >
> >
> >_______________________________________________
> >Plug maillist  -  Plug@lists.nothinbut.net
> >http://lists.nothinbut.net/mail/listinfo/plug
>
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--
************************************************
Thomas E. Keiser
tek@teklogic1.com



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