From owner-freebsd-stable@FreeBSD.ORG Mon Mar 5 07:58:50 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id C9F4516A404 for ; Mon, 5 Mar 2007 07:58:50 +0000 (UTC) (envelope-from duane@dwlabs.ca) Received: from smtpout.eastlink.ca (smtpout.eastlink.ca [24.222.0.30]) by mx1.freebsd.org (Postfix) with ESMTP id 8E83C13C46B for ; Mon, 5 Mar 2007 07:58:50 +0000 (UTC) (envelope-from duane@dwlabs.ca) Received: from ip02.eastlink.ca ([24.222.10.10]) by mta01.eastlink.ca (Sun Java System Messaging Server 6.2-4.03 (built Sep 22 2005)) with ESMTP id <0JEF0080G63MHAC1@mta01.eastlink.ca> for freebsd-stable@freebsd.org; Mon, 05 Mar 2007 03:28:34 -0400 (AST) Received: from blk-224-199-230.eastlink.ca (HELO dwpc.dwlabs.ca) ([24.224.199.230]) by ip02.eastlink.ca with ESMTP; Mon, 05 Mar 2007 03:28:49 -0400 Received: from dwpc.dwlabs.ca (ftp.dwlabs.ca [192.168.0.10]) by dwpc.dwlabs.ca (8.13.8/8.13.8) with ESMTP id l257PaUo006867; Mon, 05 Mar 2007 03:25:42 -0400 (AST envelope-from duane@dwpc.dwlabs.ca) Received: (from duane@localhost) by dwpc.dwlabs.ca (8.13.8/8.13.8/Submit) id l257PZt9006866; Mon, 05 Mar 2007 03:25:35 -0400 (AST envelope-from duane) Date: Mon, 05 Mar 2007 03:25:35 -0400 From: Duane Whitty In-reply-to: <20070305063006.GA17079@same.swcp.com> To: Mark Costlow Message-id: <20070305072535.GA6589@dwpc.dwlabs.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Content-disposition: inline X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgAAAMZV60UY4MfmdGdsb2JhbACPKgE X-IronPort-AV: i="4.14,247,1170648000"; d="scan'208"; a="109416114:sNHT33023898" X-Virus-Scanned: ClamAV 0.88.6/2723/Sun Mar 4 16:50:33 2007 on dwpc.dwlabs.ca X-Virus-Status: Clean X-Spam-Checker-Version: SpamAssassin 3.1.4 (2006-07-25) on dwpc.dwlabs.ca References: <20070305063006.GA17079@same.swcp.com> User-Agent: Mutt/1.4.2.2i X-Spam-Status: No, score=-1.8 required=5.0 tests=AWL,BAYES_00, UNPARSEABLE_RELAY autolearn=ham version=3.1.4 Cc: freebsd-stable@freebsd.org Subject: Re: ARP problem with 6.2-STABLE Intel PRO/1000 NIC, latest em driver X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Duane Whitty List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Mar 2007 07:58:51 -0000 On Sun, Mar 04, 2007 at 11:30:07PM -0700, Mark Costlow wrote: > The Machine: > > I have a dual Xeon 5130 machine, Supermicro motherboard, with > the 82563EB NIC. From dmesg: > > CPU: Intel(R) Xeon(R) CPU 5130 @ 2.00GHz (2000.08-MHz 686-class CPU) > cpu0: on acpi0 > em0: port 0x2000-0x201f mem 0xda000000-0xda01ffff irq 18 at device 0.0 on pci4 > > The machine has 4G RAM and a 3ware 9000 series RAID controller with 2 drives. > > pciconf -l says: > > em0@pci4:0:0: class=0x020000 card=0x000015d9 chip=0x10968086 rev=0x01 hdr=0x00 > em1@pci4:0:1: class=0x020000 card=0x000015d9 chip=0x10968086 rev=0x01 hdr=0x00 > > > The symptom: > > The machine boots OK, but can only intermittently make netork connections. > Eventually determined that it seems to only see a few ARP packets, so > it's falling out of other machines' ARP tables, and is often unable to > see the replies to its own ARP requests. It does see SOME ARPs > though. When it is able to communicate with another machine, it > does not appear to drop any packets between them (e.g. I scp'd a 500M file > at 300Mbps to this machine). > > When I run "tcpdump -n arp" I see a few ARPs, but not many. In a 1-minute > period, I saw 3 ARP who-has/reply packets. On a different machine on > the same ethernet switch, I saw 225 who-has/reply packets in the same > 1-minute period. > > I've tried different cables, and a different switch. I started with > 6.2-RELEASE, and then went to 6.2-STABLE on 3/3/07 to get the latest > em driver fixes. I've used SMP and GENERIC kernels. I get the same > results in all cases. > > There are no firewall rules installed. > > I plugged in a USB ethernet adapter (realtek), and it works straight away. > "tcpdump -n arp" sees the same noise as other machines on that LAN. > Sounds like it could be bad hardware. Can you swap nics? > I read through the recent threads on the em driver, but didn't see any > reported symptoms like this. Has anyone seen anything like this? Got > any hints for me? Am I doing something stupid? Did I leave out any > useful information about my configuration? > Maybe more of your dmesg might help as it could show interrrupt issues that perhaps others could help diagnose --Duane > Thanks, > > Mark > -- > Mark Costlow | Southwest Cyberport | Fax: +1-505-232-7975 > cheeks@swcp.com | Web: www.swcp.com | Voice: +1-505-232-7992 > > abq-strange.com -- Interesting photos taken in Albuquerque, NM > Last post: Art Is OK...And Dangerous - 2007-03-02 10:27:17 >