From owner-freebsd-stable@FreeBSD.ORG Sat Mar 5 20:42:49 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 5286B16A4CE for ; Sat, 5 Mar 2005 20:42:49 +0000 (GMT) Received: from mail27.sea5.speakeasy.net (mail27.sea5.speakeasy.net [69.17.117.29]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0814843D49 for ; Sat, 5 Mar 2005 20:42:49 +0000 (GMT) (envelope-from jmg@hydrogen.funkthat.com) Received: (qmail 20817 invoked from network); 5 Mar 2005 20:42:47 -0000 Received: from gate.funkthat.com (HELO hydrogen.funkthat.com) ([69.17.45.168]) (envelope-sender ) by mail27.sea5.speakeasy.net (qmail-ldap-1.03) with SMTP for ; 5 Mar 2005 20:42:47 -0000 Received: from hydrogen.funkthat.com (qjylqn@localhost.funkthat.com [127.0.0.1])j25KgkGH015674; Sat, 5 Mar 2005 12:42:46 -0800 (PST) (envelope-from jmg@hydrogen.funkthat.com) Received: (from jmg@localhost) by hydrogen.funkthat.com (8.12.10/8.12.10/Submit) id j25KgjHU015673; Sat, 5 Mar 2005 12:42:45 -0800 (PST) Date: Sat, 5 Mar 2005 12:42:45 -0800 From: John-Mark Gurney To: Peter Jeremy Message-ID: <20050305204245.GF89312@funkthat.com> Mail-Followup-To: Peter Jeremy , Doug White , stable@freebsd.org References: <20050303.181823.216808984.kasahara@nc.kyushu-u.ac.jp> <20050304233814.U4084@carver.gumbysoft.com> <20050305115604.GD4394@cirb503493.alcatel.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050305115604.GD4394@cirb503493.alcatel.com.au> User-Agent: Mutt/1.4.1i X-Operating-System: FreeBSD 4.2-RELEASE i386 X-PGP-Fingerprint: B7 EC EF F8 AE ED A7 31 96 7A 22 B3 D8 56 36 F4 X-Files: The truth is out there X-URL: http://resnet.uoregon.edu/~gurney_j/ X-Resume: http://resnet.uoregon.edu/~gurney_j/resume.html cc: stable@freebsd.org Subject: Re: 1000baseTX? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: John-Mark Gurney 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 20:42:49 -0000 Peter Jeremy wrote this message on Sat, Mar 05, 2005 at 22:56 +1100: > On Fri, 2005-Mar-04 23:39:36 -0800, Doug White wrote: > >On Thu, 3 Mar 2005, Yoshiaki Kasahara 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? > > I'm not sure about the pairing but there are two distinct standards > for gigabit ethernet over UTP. Try typing "1000base-t 1000base-tx > differences" (without the quotes) into Google. The interesting thing about that is that most sites talking about the differences say 1000base-T require CAT-5e cabling, though the IEEE standard says only CAT-5.. :) And also the IEEE standard makes no mention of 1000base-TX... So, I would say most modern cards are 1000base-T compatible, though making sure we don't futz with an older card's description will be difficult... -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."