From owner-freebsd-bugs@FreeBSD.ORG Wed Mar 21 00:52:23 2007 Return-Path: X-Original-To: freebsd-bugs@freebsd.org Delivered-To: freebsd-bugs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 3AE8E16A400; Wed, 21 Mar 2007 00:52:23 +0000 (UTC) (envelope-from hostmaster@Infra-Service.ca) Received: from server.Infra-service.ca (loghost.csas.com [204.138.67.1]) by mx1.freebsd.org (Postfix) with ESMTP id 0E17F13C465; Wed, 21 Mar 2007 00:52:22 +0000 (UTC) (envelope-from hostmaster@Infra-Service.ca) Received: from localhost by mail.infra-service.ca via sendmail with STDIO (/R:bind_hosts/T:inet_zone_bind_smtp/dest:remote) id (3166 bytes from ident using UNIX) for ; Tue, 20 Mar 2007 20:52:21 -0400 (EDT) (Smail-3.2.0.122-Pre 2005-Nov-17 #2; built 2006-May-8) Message-Id: From: Infraservice hostmaster To: jfvogel@gmail.com (Jack Vogel) Date: Tue, 20 Mar 2007 20:52:21 -0400 (EDT) In-Reply-To: <2a41acea0703201722l518d0fe1x78d6c0bf903754d2@mail.gmail.com> X-Mailer: ELM [version 2.5 PL8] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-bugs@freebsd.org, bug-followup@freebsd.org, kris@obsecurity.org Subject: Re: kern/110561 "em" driver shuts down interface when "ifconfig media 100baseTX" is invoked X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Mar 2007 00:52:23 -0000 | On 3/20/07, Infraservice hostmaster wrote: | > | On Tue, Mar 20, 2007 at 07:40:10AM +0000, Infraservice hostmaster wrote: | > | > The following reply was made to PR kern/110561; it has been noted by GNATS. | > | > | > | > From: Infraservice hostmaster | > | > To: bug-followup@freebsd.org | > | > Cc: | > | > Subject: Re: kern/110561 "em" driver shuts down interface when "ifconfig media 100baseTX" is invoked | > | > Date: Tue, 20 Mar 2007 03:31:54 -0400 (EDT) | > | > | > | > | | > | > | Synopsis: :"em" driver shuts down interface when "ifconfig media 100baseTX" is invoked | > | > | | > | > | State-Changed-From-To: open->closed | > | > | State-Changed-By: remko | > | > | State-Changed-When: Tue Mar 20 06:42:06 UTC 2007 | > | > | State-Changed-Why: | > | > | This is not a bug, this is a problem in the negotiation on the other | > | > | side. If the switch you are attaching to is not supporting the fixed | > | > | setting of the speed and duplex settings or incorrectly negotiates then | > | > | this is not a problem of the driver nor the card but a switching | > | > | problem. Please try to findout FIRST what the real problem is and THEN | > | > | get back to me if this really is a FreeBSD problem (Discuss this on the | > | > | networking mailinglist please > | > | > | http://lists.freebsd.org/mailman/listinfo/freebsd-net/). | > | > | > | > This happens to every interface we tried it on! | > | | > | Right, which is consistent with the switch failing to negotiate. | > | > wrong, each interface connects to distinctly different devices | > | > one is a cisco adsl router, another is a FBSD 6.2 box with an | > Intel fxp card - it ifconfigs media/mediaopt just fine BTW | | So, if each 'distinctly different device' can't handle forcing the speed | then Kris's assertion still holds. | | Our test group at Intel has a wide range of hardware, and they do | extensive tests on forcing speed/duplex, I am unaware of any | outstanding bugs on this issue. I think i am cunfused by this difference between what i see with a fxp interface: media: Ethernet 100baseTX status: active ... and an em interface: media: Ethernet 100baseTX (autoselect) status: no carrier I've not previously seen "(autoselect)" appended after doing "ifconfig media 100baseTX mediaopt full-duplex" to my recollection. Is a defective ethernet cable a possible cause even though it seems to pass packets just fine?