Hey, hold on a moment - it may be some time since I played with 10base2
(We still have some at work, but if it ain't broke - they haven't
required fixing for 5 years or so!) but a hundred stations, no way!
However, ISTR that a maximum of 10/15 stations a segment and a maximum of
5 segments to a network. You need a repeater between each segment, and if
you need more that 1 network, you need a bridge or router.
However, this won't help Bob.
Provided that your co-ax is less than 185 metre (maybe ft, can't remember).
Some cards will support networks less than 300 m(ft) if all cards support
300 m). The cable MUST be terminated with 50 ohms at both ends and the space
between "T" connections MUST be more than 1 m.
If the fault is related to a specific network card/machine, my guess is
that you have a faulty card - probably a "race" condition - the card
transmitting rubbish and hogging the network, not allowing any other card
chance to transmit.
Check the cabling by measuring the resistance from inner to outer at any
"T", it should be around 25 ohms plus a little cable resistance, say no
more than 30 ohms or so. If it is much higher, 50 ohms or more, look for
an open circuit cable, terminator or even a "T" (these have been known to
fall apart internally!).
Of course, it could be an IP problem, but I doubt it!
HTH
Geoff
On Mon, 15 May 2000, ron jochems wrote:
> Bob,
>
> it should be possible to attach more than hundred stations on 10base2 as you
> mention it.
> It looks like there is a problem with your cable. Can you take a ohm-meter
> and assure there is no
> short-cut in the cable.?.
> always make sure there is an T-connector on every station. even when only
> attaching 1 cable.
> So never attach the cable directly to a network card or hub/repeater. It
> will absolutely not
> work, it will lose it's 50ohm.
>
> you can also test your wire by attaching a terminator directly to the cable
> in stead of attaching it to a network card.
> in that way you can test the cable itself.
>
> Succes !
>
> PD1ACF
> ron
>
> -----Original Message-----
> From: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> Date: Monday, May 15, 2000 2:46 AM
> Subject: off topic!
>
>
> >Hi
> >Sorry this is an big off topic but not sure where else to ask
> >so any help will be great
> >ok i have three machines that are tie together with ethernet using
> >thincoax bnc type
> >it seems all works ok with two bnc connectors on one machine and the other
> >two boxes have an bnc on each to it and then on the other side of the T
> >connector it has an termertor but when i take one of them off on one of the
> machines and run another thincoax with bnc connecto
> >r to it it seems it locks up
> >anything from flowing anywhere so what i am thinking is it that you only
> can
> >have up to three boxes tie together with thin coax so any info on that will
> >help thanks in advance
> >Sorry for the miss spelling of some of this!
> >BOB N1UAN
>
--
Geoff Blake geoff @ palaemon . co . uk linux 2.0.36
Chelmsford g8gnz @ g8gnz . ampr . org sparc - i586
Intel create faster processors - Microsoft create slower processes
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