From owner-freebsd-stable@FreeBSD.ORG Sat Mar 5 09:56:04 2005 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0422116A4CE for ; Sat, 5 Mar 2005 09:56:04 +0000 (GMT) Received: from smtp-vbr6.xs4all.nl (smtp-vbr6.xs4all.nl [194.109.24.26]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5C82743D2D for ; Sat, 5 Mar 2005 09:56:03 +0000 (GMT) (envelope-from wb@freebie.xs4all.nl) Received: from freebie.xs4all.nl (freebie.xs4all.nl [213.84.32.253]) by smtp-vbr6.xs4all.nl (8.12.11/8.12.11) with ESMTP id j259u1N2036521; Sat, 5 Mar 2005 10:56:01 +0100 (CET) (envelope-from wb@freebie.xs4all.nl) Received: from freebie.xs4all.nl (localhost [127.0.0.1]) by freebie.xs4all.nl (8.13.3/8.12.9) with ESMTP id j259u17I004840; Sat, 5 Mar 2005 10:56:01 +0100 (CET) (envelope-from wb@freebie.xs4all.nl) Received: (from wb@localhost) by freebie.xs4all.nl (8.13.3/8.13.1/Submit) id j259u1QF004839; Sat, 5 Mar 2005 10:56:01 +0100 (CET) (envelope-from wb) Date: Sat, 5 Mar 2005 10:56:01 +0100 From: Wilko Bulte To: sthaug@nethelp.no Message-ID: <20050305095601.GA4821@freebie.xs4all.nl> References: <20050304233814.U4084@carver.gumbysoft.com> <21136.1110016329@bizet.nethelp.no> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <21136.1110016329@bizet.nethelp.no> X-OS: FreeBSD 4.11-STABLE User-Agent: Mutt/1.5.6i X-Virus-Scanned: by XS4ALL Virus Scanner cc: stable@freebsd.org Subject: Re: 1000baseTX? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Mar 2005 09:56:04 -0000 On Sat, Mar 05, 2005 at 10:52:09AM +0100, sthaug@nethelp.no wrote.. > > > In man pages, dmesg and ifconfig of FreeBSD5, GbE operation over > > > twisted pair is mostly referred as '1000baseTX'. I guess most of them > > > should be replaced by '1000baseT'. 1000base"TX" and 1000base"T" are > > > different standard and they are not compatible ("TX" needs CAT6 cable > > > and uses pairs in different way). Also 1000baseTX support is very > > > rare yet. I'm sorry I'm not sure if some devices really support "TX". > > > > Do you have any documentation to back up this claim? > > 1000baseTX was an attempt at producing less expensive hardware (NICs > etc) that could be used with Cat6 cabling. It is basically dead, and > was never blessed by the IEEE. > > The IEEE is quite clear on the fact that Gigabit Ethernet on Cat5 UTP > is called 1000Base-T. See for instance Chapter 34, "Introduction to > 1000 Mb/s baseband network", in IEEE 802.3-2002, available from > > http://standards.ieee.org/getieee802/802.3.html > > So using 1000baseTX as the name in FreeBSD is clearly wrong. Probably just as right or wrong as 99% of the NIC cards docs. Next to every gigE card I have had my hands one mandated at least CAT5e but generally preference was expressed for CAT6. -- Wilko Bulte wilko@FreeBSD.org