From owner-freebsd-stable@FreeBSD.ORG Mon Mar 5 06:49:50 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 D552816A400 for ; Mon, 5 Mar 2007 06:49:50 +0000 (UTC) (envelope-from cheeks@swcp.com) Received: from mx1a.swcp.com (mx1a.swcp.com [216.184.2.64]) by mx1.freebsd.org (Postfix) with ESMTP id A2CE513C471 for ; Mon, 5 Mar 2007 06:49:50 +0000 (UTC) (envelope-from cheeks@swcp.com) Received: from ame9.swcp.com (ame9.swcp.com [216.184.2.164]) by mx1a.swcp.com (8.13.4/8.13.4/Debian-3sarge1) with ESMTP id l256U9tJ017697 for ; Sun, 4 Mar 2007 23:30:09 -0700 Received: from same.swcp.com (same.swcp.com [216.184.2.4]) by ame9.swcp.com (8.13.8/8.13.6) with ESMTP id l256U7jW012665 for ; Sun, 4 Mar 2007 23:30:08 -0700 (MST) (envelope-from cheeks@swcp.com) Received: (from cheeks@localhost) by same.swcp.com (8.8.8/8.8.7) id GAA19750 for freebsd-stable@freebsd.org; Mon, 5 Mar 2007 06:30:07 GMT Date: Sun, 4 Mar 2007 23:30:07 -0700 From: Mark Costlow To: freebsd-stable@freebsd.org Message-ID: <20070305063006.GA17079@same.swcp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.1i X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (ame9.swcp.com [216.184.2.164]); Sun, 04 Mar 2007 23:30:08 -0700 (MST) X-Virus-Scanned: ClamAV 0.88.7/2723/Sun Mar 4 13:50:33 2007 on ame9.swcp.com X-Virus-Status: Clean X-Spam-Checker-Version: SpamAssassin 3.1.7 (2006-10-05) on ame9.swcp.com X-Spam-Level: X-Spam-Status: No, hits=-0.0 required=10.0 tests=NO_RELAYS autolearn=no version=3.1.7 Subject: 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 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 06:49:50 -0000 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. 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? 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