From owner-freebsd-questions@FreeBSD.ORG Wed Jul 15 20:15:42 2009 Return-Path: Delivered-To: FreeBSD-Questions@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6B2A710656AD for ; Wed, 15 Jul 2009 20:15:42 +0000 (UTC) (envelope-from noc@hdk5.net) Received: from guam10.hdk5.net (guam10.hdk5.net [66.180.132.235]) by mx1.freebsd.org (Postfix) with ESMTP id 20DEB8FC0C for ; Wed, 15 Jul 2009 20:15:41 +0000 (UTC) (envelope-from noc@hdk5.net) Received: from mohawk7.intra.net (unknown [66.180.149.18]) by guam10.hdk5.net (Postfix) with ESMTP id 515EA1CCBC; Wed, 15 Jul 2009 10:15:41 -1000 (HST) Message-ID: <4A5E38EC.3050604@hdk5.net> Date: Wed, 15 Jul 2009 10:15:40 -1000 From: Al Plant User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11) Gecko/20071128 FreeBSD/i386 SeaMonkey/1.1.7 MIME-Version: 1.0 To: David Kelly References: <20090715194718.GA16401@Grumpy.DynDNS.org> In-Reply-To: <20090715194718.GA16401@Grumpy.DynDNS.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: FreeBSD-Questions@FreeBSD.org Subject: Re: 5000' ethernet? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Jul 2009 20:15:46 -0000 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