I've seen situations where the legal length has been nearly doubled
on full duplex connections without much apparent trouble. I don't know
if I'd trust a Windoze box in this kind of configuration, but routers,
unix hosts, etc, don't seem to mind too much.


"[EMAIL PROTECTED]" wrote:
> 
> I have a question regarding the max length for a 100BaseT cable. Granted I
> haven't done a wealth of research on this so feel free to point me to
> google if the answer is mind numbingly simple, which it probably is....
> 
> I have always understood the 100M limitation on 10BaseT ethernet cable to
> be attributable to the time it would take a collision signal - assuming you
> are running at half duplex - to be returned in time to prevent the next
> packet from being sent. In other words any longer than 100M and the sending
> station would not get the message in time that there had been a collision
> and thus continue sending packets instead of backing off. I have heard
> attenuation mentioned, but not as the "real" reason for the distance limit.
> 
> My question is given that many stations are running 100 full duplex these
> days - thus removing the collision concerns - does this effectively change
> the maximum distance for cable runs? Or is attenuation truly a factor in
> anything over 100M?
> 
> In general I am referring to standard Cat5 cabling....
> 
> Just curious...
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