Date: Thu, 4 Mar 2004 12:08:46 +0000 From: ict technician <ict@cardinalnewman.coventry.sch.uk> To: freebsd-stable@freebsd.org Subject: Re: em0 checksum errors Message-ID: <200403041208.46884.ict@cardinalnewman.coventry.sch.uk> In-Reply-To: <200403021434.27420.ict@cardinalnewman.coventry.sch.uk> References: <200403021228.17716.ict@cardinalnewman.coventry.sch.uk> <200403021434.27420.ict@cardinalnewman.coventry.sch.uk>
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On Tuesday 02 March 2004 2:34 pm, ict technician wrote: > On Tuesday 02 March 2004 12:28 pm, ict technician wrote: > > I've been testing an application which uses UDP. I was having > > difficulties so I started taking packet dumps. I noticed that many > > packets have bad checksums. The errors are mostly on UDP packets but I do > > see some TCP packets with errors also. This occurs on system applications > > without the new app. running, e.g. dns/ssh > > > > This is reproducable on more than one system, although the NICs are > > probably from the same batch, as I bought a box of 5 out of 7 in use. > > Systems are 4.9-RELEASEp1/p2. > > > > The cards are Intel PRO/1000 MT Server. I'll get the numbers off the card > > shortly. > > > > One box on stable (18th Feb) seems okay so I'm going to try stable on my > > test box and see if that cures it. > > > > I won't spam the list with the dump. > > replies to self - how uncouth. > > While it's building I decide to re-read the recent thread > http://docs.freebsd.org/cgi/mid.cgi?6.0.3.0.0.20040226131930.10513908 > > I'd discounted this as I wasn't seeing the EEPROM message. > > Sure enough, moving the em0 card seems to fix the problem. > > I'll reply to self again once I confirm the conflicting item ;) Aaarrrgghhh, evil PC hardware. Once I'd moved the NIC it decided to work. However, I moved the card back to it's original slot and could no longer reproduce the fault. All the other boxes with these cards are production but I can play with the "backup server" which only need to run at night. Tried a cold boot. No joy. Then I swapped the NIC. No joy. Noted that it's different C31527-002 vs A92165-004. Not listed as supported but according to Intel it's the same part. Much swapping of cards to no avail. Trying more stuff :(( -- i j hart ICT Technician Cardinal Newman Catholic School & Community College
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