Date: Wed, 30 Dec 1998 13:01:48 -0600 (CST) From: Kevin Day <toasty@home.dragondata.com> To: lem@cantv.net (Luis Munoz) Cc: eischen@vigrid.com, mrcpu@internetcds.com, wilko@yedi.iaf.nl, FreeBSD-hackers@FreeBSD.ORG Subject: Re: comments on de driver error message? Message-ID: <199812301901.NAA16814@home.dragondata.com> In-Reply-To: <3.0.6.32.19981230121001.0088e6e0@pop.cantv.net> from Luis Munoz at "Dec 30, 1998 12:10: 1 pm"
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> > FWIW, I had the same configuration (with switches instead of hubs) > and were getting the same errors in a couple of boxes. > > When I certified the patch cords of the top two machines appearing > in the logs with a WireScope 155 I found one of them bad. After > replacing both of them, I've seen no more messages like those. > > At first I was bitching about the cheap cards or the driver but hey, > it was the cable. What stroke me is that even with an expensive > cable-testing device one of the cables was 'good'! > > Regards. > > -lem One other thing to consider though. Most other ethernet drivers in FreeBSD don't report the errors at all. de is just talkative. So, just because the driver complains of a crc error once or twice a day, doesn't mean you really need to go out and change cables. If you had picked another card, you wouldn't even know the problem existed. (After mucking with lanmeters, swapping cables, and even swapping cards and switches, I gave up looking for the demon that caused my error's, and just commented the errors out) On an unrelated note: Anyone here see 'ghost' packets from 55:55:55:55:55:55 or aa:aa:aa:aa:aa:aa floating around? I've seen cards report packets from these addresses, my switch end up with them in it's tables, and even my lanmeter saw them a few times..... AC noise? Kevin > > At 11:30 PM 29/12/98 -0500, Daniel Eischen wrote: > >> I tested all mine with a Fluke Lanmeter 6802 to 100mbit, and they all > >> checked fine. Only the de0 card reports any errors, nothing else > >> (including the hubs and the lan tester) think anything is wrong at all... > > > >Does the Lanmeter also validate the CRCs in the packets? > > > >If the de error messages always indicate teh same Ethernet > >address(es) and there are other systems in the network that > >don't evoke these same messages, then it is hard to point > >the finger at the de card. > > > >In my case, the error message always indicated the same > >Ethernet address. It turned out the RJ58 connector was > >crimped too hard, so that the metal contacts were recessed > >too much and didn't make a good connection when it was > >plugged in. The fault was mine because I made the [bad] > >cables in the first place :( > > > >Dan Eischen > >eischen@vigrid.com > > > >To Unsubscribe: send mail to majordomo@FreeBSD.org > >with "unsubscribe freebsd-hackers" in the body of the message > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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