Subject: Re: Odd behavior--explainable?
To: Allen Briggs <>
From: Gentry A. Bieker <gbieker@crown.NET>
List: tech-net
Date: 06/19/1998 11:12:23
This may have nothing to do with it, but it was the problem with my
NetBSD/sun3 system communicating on a local network at home...  Check the
broadcast address.  SOMETIMES it would eventutally get through but very
very slow...

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On Thu, 18 Jun 1998, Allen Briggs wrote:

> I've got two NetBSD/i386 systems--one running -current as of a couple of
> days ago (+ bouyer's IDE patches), one running 1.3.1.  I was trying to
> ftp get on the 1.3.1 machine, pulling from the -current machine.  Both
> systems have DEC ethernet controllers (both AF, I think) running at
> 100Mbit, half-duplex.  They're attached to a hub with an uplink to a
> switch and one other (relatively low-trafficed) host on the hub.
> The ftp was stalling.  I said to myself--"This isn't right.  I should
> run tcpdump to see what, if anything, is transpiring."  So I ran
> 'tcpdump "host hostA and host hostB"'.  As soon as I did that, I started
> getting something like 1-2MB/sec.  Still not fabulous, but respectable.
> Since this was a relatively huge file (1.2G), I stopped tcpdump and
> restarted it a couple of times.  Whenever I stopped tcpdump, the ftp would
> slow way down.  Whenever I restarted tcpdump, the ftp would proceed at a
> more acceptable pace again.
> Any thoughts?
> -allen
> -- 
>                     Allen Briggs -