From owner-freebsd-questions@FreeBSD.ORG Wed Jul 15 20:32:27 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 002B0106564A for ; Wed, 15 Jul 2009 20:32:26 +0000 (UTC) (envelope-from bsd4michelle@tamay-dogan.net) Received: from webmail.codefoundry.com (webmail.codefoundry.com [62.231.42.10]) by mx1.freebsd.org (Postfix) with ESMTP id 833A58FC14 for ; Wed, 15 Jul 2009 20:32:26 +0000 (UTC) (envelope-from bsd4michelle@tamay-dogan.net) Received: from mail.private.tamay-dogan.net ([::ffff:82.113.121.84]) (AUTH: CRAM-SHA256 konzack.michelle.tamay-catchall@codefoundry.com) by webmail.codefoundry.com with esmtp; Wed, 15 Jul 2009 21:39:05 +0100 id 002B00E2.4A5E3E6A.0000591C Received: from michelle1.private.tamay-dogan.net (michelle1.private.tamay-dogan.net [::ffff:192.168.0.91]) by mail.private.tamay-dogan.net with esmtp; Wed, 15 Jul 2009 22:32:05 +0200 id 0002BF6A.4A5E3CC5.00003F5F Received: by michelle1.private.tamay-dogan.net (sSMTP sendmail emulation); Wed, 15 Jul 2009 22:27:35 +0200 Date: Wed, 15 Jul 2009 22:27:35 +0200 From: Michelle Konzack To: freebsd-questions@freebsd.org Message-ID: <20090715202734.GH29667@tamay-dogan.net> References: <20090715194718.GA16401@Grumpy.DynDNS.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20090715194718.GA16401@Grumpy.DynDNS.org> X-Message-Flag: Improper configuration of Outlook is a breeding ground for viruses. Please take care your Client is configured correctly. Greetings Michelle. X-Disclaimer-DE: Eine weitere Verwendung oder die Veroeffentlichung dieser Mail oder dieser Mailadresse ist nur mit der Einwilligung des Autors gestattet. Organization: Tamay Dogan Network X-Operating-System: Linux michelle1 2.6.26-1-686 X-Uptime: 22:05:55 up 11 days, 23:36, 19 users, load average: 2.43, 2.55, 2.46 X-Homepage-2: http://www.debian.tamay-dogan.net/ User-Agent: Mutt/1.5.18 (2008-05-17) 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 20:32:27 -0000 Hello David, Am 2009-07-15 14:47:18, schrieb David Kelly: > 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? I do not know hoe much a feet is in meters but AFAIK arround 0,3 which mean, you are talking about 1.5km or 1 mile ? I would say, NO chance with Ethernet... it is limited to 500 meters. > 100baseT uses lower power drivers than 10baseT, so perhaps 10baseT would > work better. There are inexpensive FiberOptic Transponder (I am using a bunch of it =66rom Transmode for my CWDM 1GE and DWDM 10GE network) The 100 Mbit Transponder cost arround 600 Euro (each) and for your 5000 feets you need only an inexpensive FiberOptic cable. EVEN the cheapes one would transfer 1 Gbit at this distance. > 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? You have to use at least 3 Repeaters which NEED electricity. Do you know this? 5000 feet CAT5, 3 Repeater plus electric installation cost more, then the FiberOptic Cable with two Transponder. And of course, no one can sniff traffic on FiberOptic and you have no worry about magnetic fields disturbing your 5000 feet... Thanks, Greetings and nice Day/Evening Michelle Konzack Systemadministrator Tamay Dogan Network Debian GNU/Linux Consultant --=20 Linux-User #280138 with the Linux Counter, http://counter.li.org/ ##################### Debian GNU/Linux Consultant ##################### Michelle Konzack c/o Vertriebsp. KabelBW Blumenstrasse 2 Jabber linux4michelle@jabber.ccc.de 77694 Kehl/Germany IRC #Debian (irc.icq.com) Tel. DE: +49 177 9351947 ICQ #328449886 Tel. FR: +33 6 61925193