Subject: Re: tlp won't do full duplex
To: Thilo Manske <Thilo.Manske@HEH.Uni-Oldenburg.DE>
From: Jim Bernard <>
List: current-users
Date: 07/02/2000 08:54:45
On Sun, Jul 02, 2000 at 09:48:46AM +0200, Thilo Manske wrote:
> On Sat, Jul 01, 2000 at 10:01:33PM -0600, Jim Bernard wrote:
> > I have an Intel system with a 10/100 Sohoware Fast (Macronix 98715AEC-C)
> > PCI ethernet card attached to a D-Link 10/100 switch.  Both are documented
> > to be capable of full duplex communication.  When the interface is down
> > (e.g., in single-user mode), the full-duplex light on the switch glows
> > nicely.  But as soon as ifconfig brings up the interface, the light goes
> > off.  This happens even though I specifically request "mediaopt
> > full-duplex".
> I have a D-Link 10/100 switch as well (DES-1005). If I configure *any*
> network card (this happens IIRC with epic, ex, rtl and probably vr cards) to
> full-duplex manually the switch goes half-duplex on that port. But giving no
> media/media-opt or "media auto" to ifconfig works fine. I guess that
> "mediaopt full-duplex" has negative side effects on this "N-Way" thingie...

  Unfortunately, that doesn't work with the tlp.  It defaults to 10baseT and
half duplex, so I need to specify 100baseT to get the higher speed, and
whether I specify full-duplex or not (or even -mediaopt full-duplex), the
full-duplex light on the switch goes out.