Date: Thu, 9 Mar 1995 10:54:10 -0600 From: Mark Tinguely <tinguely@plains.nodak.edu> To: brian@mediacity.com Cc: freebsd-questions@FreeBSD.org Subject: Re: Slow machine messing up my ethernet? Message-ID: <199503091654.AA20653@plains.NoDak.edu>
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> I have about 6 machines on my private little ethernet. > > I was ftp'ing some stuff between a 486DX2/66 running BSD/OS 1.1 > with an SMC WD8013EPC and a P5/90 running FreeBSD 2.1.0-Development > with a DEC PCI Ethernet card. Each file was about 240K and I was > seeing around 50 to 100K per second transfers. > > Every 5 or 10 files the ethernet would be wedged. None of the > machines on my net could talk to any of the others. > > I found that turning of a third machine, 486DX2/66 running > FreeBSD 2.1.0-Development with a SMC Ultra Elite, allowed the transfers > between the 1st two machines to proceed without incident. > > I haven't exhaustively tested this, but thought I'd check if anyone > else had run into something similar. is the wedge permanent or take about a minute or so to clear? do you have a thin net (10Base-2)? if so, pull on each connector on both ends of all the wires to see if one is loose or has a bad ground. also make sure you have at least half a meter of wire between the last tee and the terminator. to check for a bad ethercard, run tcpdump from the pentium. if you see a broadcast storm coming from one machine that may explain the problem. --mark
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