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Date: Mon, 11 Aug 1997 12:16:33 -0700 (PDT)
From: Tom Samplonius <tom@sdf.com>
To: hackers@freebsd.org
Subject: fxp driver full duplex packet loss problem
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  I have a Intel Etherexpress Pro100/B conneted into a 10BT port on a
lightly loaded Catlyst 1900 etherswitch.  The system is running 2.2-stable
(last week), and traffic ranges from about 50 to 150KB/s output (as
measured with netstat -I fxp0 -w 1)

  When I use "link0 link2" to enable full-duplex operation, I start seeing
about 1 to 4% packet loss (measured with ping to and from the server).
When I disable full-duplex, the packet loss disappears.

  Is it safe to change the full-duplex vs. half-duplex on-the-fly?  Should
I power-cycle/reboot between changes?

  Anyone else running this card in this kind of configuration?

Tom