From owner-freebsd-net@FreeBSD.ORG Wed Mar 8 22:13:15 2006 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6DE5316A422 for ; Wed, 8 Mar 2006 22:13:15 +0000 (GMT) (envelope-from freebsd-net@m0z.net) Received: from panoramix.m0z.net (panoramix.m0z.net [213.201.236.120]) by mx1.FreeBSD.org (Postfix) with SMTP id 51D7B43D53 for ; Wed, 8 Mar 2006 22:13:10 +0000 (GMT) (envelope-from freebsd-net@m0z.net) Received: (qmail 49777 invoked by uid 0); 8 Mar 2006 22:13:09 -0000 Received: from unknown (HELO ?192.168.1.100?) (ruben@vdzwan.net@84.245.38.254) by panoramix.m0z.net with SMTP; 8 Mar 2006 22:13:09 -0000 Message-ID: <440F56F4.1070509@m0z.net> Date: Wed, 08 Mar 2006 23:13:08 +0100 From: Ruben van der Zwan User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Carp: checksum failed on em0 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Mar 2006 22:13:15 -0000 Hi all, I have 2 routers running carp: router1: ifconfig_carp0="vhid 1 pass hYYgtsRE 192.168.1.1/24" ifconfig_carp0_alias0="vhid 1 pass hYYgtsRE 192.168.2.1/24" router2: ifconfig_carp0="vhid 1 advskew 100 pass hYYgtsRE 192.168.1.1/24" ifconfig_carp0_alias0="vhid 1 advskew 100 pass hYYgtsRE 192.168.2.1/24" There are vlan's present on the routers, but the 192.168.1.2/2.2 for router1 and 192.168.1.3/2.3 for router2 IP addresses are present on an em0 interface. /var/log/messages (on both router1 and router2) is flooded with these messages: Mar 8 21:53:58 router1 kernel: carp_input: checksum failed on em0 Mar 8 21:53:58 router1 kernel: carp_input: received len 20 < sizeof(struct carp_header) once every second... I've tried to remove the alias on the carp0 interface, but this had no effect. The servers are Dell PowerEdge SC1425 with a single Xeon configuration, HT is off: FreeBSD 5.4-RELEASE-p11 #2: Mon Feb 6 11:14:13 UTC 2006 root@router1.m0z.net:/usr/obj/usr/src/sys/CUSTOM Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Intel(R) Xeon(TM) CPU 2.80GHz (2800.11-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf43 Stepping = 3 Features=0xbfebfbff real memory = 1073479680 (1023 MB) avail memory = 1040941056 (992 MB) ACPI APIC Table: [....] em0: port 0xecc0-0xecff mem 0xfeae0000-0xfeafffff irq 32 at device 4.0 on pci2 em0: Ethernet address: 00:41:44:c4:52:22 em0: Speed:N/A Duplex:N/A pcib3: at device 0.2 on pci1 pci3: on pcib3 lspci: 00:00.0 Host bridge: Intel Corporation E7520 Memory Controller Hub (rev 09) 00:02.0 PCI bridge: Intel Corporation E7525/E7520/E7320 PCI Express Port A (rev 09) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2) 00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02) 01:00.0 PCI bridge: Intel Corporation 6700PXH PCI Express-to-PCI Bridge A (rev 09) 01:00.2 PCI bridge: Intel Corporation 6700PXH PCI Express-to-PCI Bridge B (rev 09) 02:04.0 Ethernet controller: Intel Corporation 82541GI/PI Gigabit Ethernet Controller (rev 05) 03:07.0 RAID bus controller: Promise Technology, Inc. PDC20571 (FastTrak TX2200) (rev 02) 04:03.0 Ethernet controller: Intel Corporation 82541GI/PI Gigabit Ethernet Controller (rev 05) 04:0d.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY [Radeon 7000/VE] It seems CARP is running fine, the first router has the shared IP, but two lines every second in /var/log/messages makes other debugging virtually impossible.... Does anybody know what's causing this messages and what I can do to stop them?