At 01:41 PM 06/29/01, Karl Cunningham wrote:
>I solved a similar bizarre LAN problem by threading one of the CAT-5
>cables through a ferrite toroid core as many times as it would go. The
>symptoms were similar to yours and not consistent -- any time any hardware
>changed the symptoms would change. One of the machines on the network was
>putting noise on the line and messing up one of the switches. Putting a
>long cable (80') between that machine and the switch fixed it, but not
>wanting a mess of cables tried the ferrite core on that cable and it
>worked too.
>
>If you have more trouble, you might consider the ferrite core method.
If you have that kind of trouble with CAT-5 I would suggest getting someone
in to test the cables and find out where the noise is coming from (it could
be as simple as a kink or a mouse chewed it, etc.). I don't think you
should ever need to put a ferrite core on CAT-5, it's already designed to
reduce noise through it's twisted pair design. If the cable is up to
specification and the ends are terminated properly it should be fine up to,
at least, 50 meters. AFAIK, if you were to do something like that on a
Levington install, you would void the lifetime warranty.
Scott.
