Date: Wed, 15 Jul 2009 10:15:40 -1000 From: Al Plant <noc@hdk5.net> To: David Kelly <dkelly@hiwaay.net> Cc: FreeBSD-Questions@FreeBSD.org Subject: Re: 5000' ethernet? Message-ID: <4A5E38EC.3050604@hdk5.net> In-Reply-To: <20090715194718.GA16401@Grumpy.DynDNS.org> References: <20090715194718.GA16401@Grumpy.DynDNS.org>
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David Kelly wrote: > Not directly FreeBSD related, but how much of a chance is there that two > machines could communicate directly over 5,000 feet of cat5 with no > special hardware? > > IIRC the classic ethernet problem limiting the distance between the > farthest points on a network had to do with timing and collisions. If > these two NICs are configured full duplex then it seems one would have > no idea how far away the other was due to timing issues. > > 100baseT uses lower power drivers than 10baseT, so perhaps 10baseT would > work better. > > In any case, have boxes of cat5 on order so as to find out myself. > > Are there any particular range extenders you have used and would > recommend for making this task a sure thing on the first try? Perhaps I > should put an inexpensive ethernet switch at each junction to serve as a > regenerative repeater? > Aloha, About a year ago we had to do this and the solution was a fiber optic cable between the PC's and server room. Used 1000 Nic cards at each end. ~Al Plant - Honolulu, Hawaii - Phone: 808-284-2740 + http://hawaiidakine.com + http://freebsdinfo.org + + http://aloha50.net - Supporting - FreeBSD 6.* - 7.* - 8.* + < email: noc@hdk5.net > "All that's really worth doing is what we do for others."- Lewis Carrol
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