Date: Mon, 5 Mar 2007 08:41:01 -0800 From: "Jack Vogel" <jfvogel@gmail.com> To: "Duane Whitty" <duane@dwlabs.ca> Cc: freebsd-stable@freebsd.org, Mark Costlow <cheeks@swcp.com> Subject: Re: ARP problem with 6.2-STABLE Intel PRO/1000 NIC, latest em driver Message-ID: <2a41acea0703050841ub56c513y1504ebe0af8052de@mail.gmail.com> In-Reply-To: <20070305072535.GA6589@dwpc.dwlabs.ca> References: <20070305063006.GA17079@same.swcp.com> <20070305072535.GA6589@dwpc.dwlabs.ca>
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On 3/4/07, Duane Whitty <duane@dwlabs.ca> wrote: > 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: <ACPI CPU> on acpi0 > > em0: <Intel(R) PRO/1000 Network Connection Version - 6.2.9> 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? No he can't these are LOMs (on the motherboard). > > 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 Yes, agreed, this might be revealing. Jack
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