From owner-freebsd-questions  Thu Apr 22 11:37: 5 1999
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Date: Thu, 22 Apr 1999 11:34:16 -0700 (PDT)
From: Doug White <dwhite@resnet.uoregon.edu>
To: Khetan Gajjar <khetan@os.org.za>
Cc: questions@FreeBSD.ORG
Subject: Re: de0: abnormal interrupt: transmit underflow
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On Thu, 22 Apr 1999, Khetan Gajjar wrote:

> Around Yesterday, "Doug White" wrote :
> 
> DW>  Is something (like an internal soundcard) sitting on IRQ 5?  Try
> DW>  overriding it from the BIOS.
> 
> No, not that I'm aware of. I'll try it though.
> 
> DW>  This is bad.  Check your cabling.  What brand/model of hub?
> 
> Ovislink, I think.

Hm.  I've found several cheap hubs that have crappy collision detection,
and will completely spam NFS traffic by calling collisions and temporarily
partitioning ports for non-error situations.  FreeBSD just overloads the
hub. :)

Good vendors include:
Netgear
Asante
HP

Bad vendors include:
Kingston (SOHO line especially)
LinkSys (?)

Doug White                               
Internet:  dwhite@resnet.uoregon.edu    | FreeBSD: The Power to Serve
http://gladstone.uoregon.edu/~dwhite    | www.freebsd.org



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