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Date:      Tue, 16 May 2000 09:08:28 -0500 (CDT)
From:      Guy Helmer <ghelmer@cs.iastate.edu>
To:        Bruce Burden <brucegb@realtime.net>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Network performance is poor! Suggestions?
Message-ID:  <Pine.HPX.4.05.10005160906310.17627-100000@popeye.cs.iastate.edu>
In-Reply-To: <200005160518.AAA13361@sullivan.realtime.net>

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On Tue, 16 May 2000, Bruce Burden wrote:

>    Okay, I have two FreeBSD boxes running 4.0-STABLE, with a Netgear FA310-TX
>    card each. What bothers me is this message from boot (on both machines):
> 
> dc0: Ethernet address: 00:a0:cc:51:df:7b
> miibus0: <MII bus> on dc0
> ukphy0: <Generic IEEE 802.3u media interface> on miibus0
> ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
> 
> 	I don't like the fact that dc0 is "unknown" (well, that is how
>    I translate ukphy0, anyway). Nor do I like the idea that I am only
>    getting about 8kbps out of this link. Any ideas what migt be going
>    on?
> 
> dc0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         inet 192.168.1.2 netmask 0xffffff00 broadcast 192.168.1.255
>         ether 00:a0:cc:51:df:7b 
>         media: 100baseTX <full-duplex> status: active
>         supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP none
> 
>    Both machines repor this, which isn't surprising, since that is how I
>    have them set up...

Are these FA310 cards connected to a hub or a switch?  If they are
connected to a hub, they should not be in full-duplex mode -- this will
cause serious performance problems.

Guy

Guy Helmer, Ph.D. Candidate, Iowa State University Dept. of Computer Science 
Research Assistant, Dept. of Computer Science   ---   ghelmer@cs.iastate.edu
http://www.cs.iastate.edu/~ghelmer




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