Date: Sun, 6 Nov 2005 07:19:53 -0600 (CST) From: David Fleck <david.fleck@mchsi.com> To: Steve Bertrand <iaccounts@ibctech.ca> Cc: 'FreeBSD Questions' <questions@freebsd.org> Subject: RE: getting an old NIC to work Message-ID: <20051106071527.B278@grond.sourballs.org> In-Reply-To: <200511051530.jA5FU5qs000530@grond.sourballs.org> References: <200511051530.jA5FU5qs000530@grond.sourballs.org>
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On Sat, 5 Nov 2005, Steve Bertrand wrote: > It appears as though everything is in order. The routes are in place, > IP/SN is all correct etc. > > You are going to have to take a step down now to the lower layers of the > network stack. > > Perform this command while plugged into the network and let it run a > while: > > # tcpdump -n -i pcn0 > > What this will do is see if the nic can see traffic coming from other > machines. Throw some pings at it from another box, and even if the other > box doesn't get a reply, tcpdump will tell you if the nic can at least > see the incoming traffic. Also, run tcpdump on another box, and repeat > the process, but ping from the box with the 'bad' nic in it. Perhaps it > can send traffic, but just not receive. Doing this both ways will > indicate either way and may give you a clue. No indication of activity either way - 'tcpdump' on the affected machine sees no packets from elsewhere, 'tcpdump' on a working machine sees tons of packets, but none from this machine. > Further that, even farther down, try a different cable and switch port > (one at a time). I know that may seem silly, but weirder things have > happened. Yes, I know... tried swapping cables/hub ports, no change. > If all of that fails, due to the fact there is a driver loaded for the > device, and it is taking all of it's parameters ok, I would say slap a > new nic in the box and see if you can rx/tx traffic via it. If you can, > I'd say then there is a problem with the nic itself, and you have > confirmed it logically and completely. Well, that may take a few days, until I scrounge up an extra NIC... but thanks for the assistance. At least I know I was going about the testing the right way. -- David Fleck david.fleck@mchsi.com
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