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Date:      Mon, 10 May 1999 23:00:22 +0200 (CEST)
From:      Wilko Bulte <wilko@yedi.iaf.nl>
To:        mjacob@feral.com
Cc:        peter@netplex.com.au, dillon@apollo.backplane.com, pjlobo@euitt.upm.es, freebsd-hackers@FreeBSD.ORG
Subject:   Re: What is a "transmit underflow"?
Message-ID:  <199905102100.XAA01411@yedi.iaf.nl>
In-Reply-To: <Pine.LNX.4.04.9905101243190.13071-100000@feral.com> from Matthew Jacob at "May 10, 1999 12:44:33 pm"

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As Matthew Jacob wrote ...

> This almost always happens for tulip chips && and alpha platforms and Matt
> Thomas' de driver.

I have also seen it quite often on i386, it is not limited to alpha

> On Tue, 11 May 1999, Peter Wemm wrote:
> 
> > Matthew Dillon wrote:
> > > :Hi, all.
> > > :
> > > :I've got two FreeBSD boxes (3.1-R) working as routers, one with two 4-port
> > > :ZNYX 10/100 ethernet cards and the other with one of those cards. The
> > > :cards have DEC chips (21140A).
> > > :
> > > :The routers are working perfectly, but from time to time I get the
> > > :following messages:
> > > :
> > > :de0: abnormal interrupt: transmit underflow (raising TX threshold to 96|256)
> > > :de1: abnormal interrupt: transmit underflow (raising TX threshold to 96|256)
> > > :
> > > :What do they mean? Everything seems to be OK, but I'd like to know wether
> > > :I have to worry about this or not.

Not to worry, it keeps working just fine in my experience. 

Groeten / Cheers,

|   / o / /  _  	 Arnhem, The Netherlands	- Powered by FreeBSD -
|/|/ / / /( (_) Bulte 	 WWW  : http://www.tcja.nl 	http://www.freebsd.org


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