From owner-freebsd-net@FreeBSD.ORG Sun Feb 16 02:32:52 2014 Return-Path: <owner-freebsd-net@FreeBSD.ORG> Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 992A6D14 for <freebsd-net@freebsd.org>; Sun, 16 Feb 2014 02:32:52 +0000 (UTC) Received: from plane.gmane.org (plane.gmane.org [80.91.229.3]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 525DB101E for <freebsd-net@freebsd.org>; Sun, 16 Feb 2014 02:32:52 +0000 (UTC) Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from <freebsd-net@m.gmane.org>) id 1WErXE-0002KR-Pi for freebsd-net@freebsd.org; Sun, 16 Feb 2014 03:32:48 +0100 Received: from tempe0.bbox.io ([24.249.180.233]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for <freebsd-net@freebsd.org>; Sun, 16 Feb 2014 03:32:48 +0100 Received: from kevin.bowling by tempe0.bbox.io with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for <freebsd-net@freebsd.org>; Sun, 16 Feb 2014 03:32:48 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-net@freebsd.org From: Kevin Bowling <kevin.bowling@kev009.com> Subject: Re: FreeBSD 10 network flapping, ix driver unreliable? Date: Sat, 15 Feb 2014 19:32:39 -0700 Lines: 28 Message-ID: <ldp7vp$hf7$1@ger.gmane.org> References: <ldohqb$s2c$1@ger.gmane.org> <61748F81-A763-4504-BC81-132D394F0170@neville-neil.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: tempe0.bbox.io User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:27.0) Gecko/20100101 Thunderbird/27.0 In-Reply-To: <61748F81-A763-4504-BC81-132D394F0170@neville-neil.com> X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-net>, <mailto:freebsd-net-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net/> List-Post: <mailto:freebsd-net@freebsd.org> List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>, <mailto:freebsd-net-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sun, 16 Feb 2014 02:32:52 -0000 On 2/15/2014 4:43 PM, George Neville-Neil wrote: > > On Feb 15, 2014, at 15:14 , Kevin Bowling <kevin.bowling@kev009.com> wrote: > >> Hi, >> >> I have FreeBSD 10.0-RELEASE installed on two Dell C6100 nodes. Each node has an Intel X520-DA2 dual port 10gig card. One of the ports on each go to a switch using direct attach coaxial cables. The other port is directly connected between the two nodes (think crossover in twisted pair terminology) again using direct attach coaxial cables. >> >> On both machines, and on both ports (including the "crossover"), the links flap several times per day. >> >> I've pasted the output of lspci -vv and dmesg here: >> https://gist.github.com/kev009/9024442 >> >> There's nothing outstanding about the setup otherwise. I suspected some interaction with the switch initially but the "crossover" has eliminated that suspicion. >> >> It seems the ix driver is not very reliable under common conditions, i.e. https://forums.freebsd.org/viewtopic.php?f=7&t=44570 and a search of this list. Any recommendations or tests? >> > > Can you post (to your gist link) the output of sysctl dev.ix ? Hi George, sysctl info added to gist link. ix0 has been up for around 27 days. ix1 for about 24hrs. Regards, Kevin Bowling