OK, I understand the aspect of being able to hear one's own transmissions. I
had a look at the flags in net/if.h and I understand your point. My problem
is that transmission rates across this interface are literally half what NT
can do so I strongly suspected an inappropirately configured device. From a
channel point of view, simplex and full-duplex are opposites. For a network
interface I understand your point of simplex/duplex which is different.
	I don't understand the reason network transfer rates are SO slow and
I really want them cranked up. Mind you this could be happening from the
daemon that I am communicating with. In this case ftp.
	Do you have an ideas as to what I can do or what I am
misunderstanding?

	High regards,
				Murray.

Murray Armfield
Murray@gem.com.au <mailto:Murray@gem.com.au> 

	-----Original Message-----
	From:	Thilo Manske [SMTP:Thilo.Manske@HEH.Uni-Oldenburg.DE]
<mailto:[SMTP:Thilo.Manske@HEH.Uni-Oldenburg.DE]> 
	Sent:	Friday, 2 July 1999 10:32
	To:	Murray Armfield
	Cc:	port-i386@netbsd.org <mailto:port-i386@netbsd.org> 
	Subject:	Re: NE2000 driver

	On Fri, Jul 02, 1999 at 09:32:57AM +1000, Murray Armfield wrote:
	> 	I have a simple NE2000 network card which I can't get into
full
	> duplex. I have ifconfig.ne2 configured to use a full duplex medium
using the
	> keyword detected on boot. Consequentially when I go ifconfig I get
media as
	> full duplex but the flags tell me its in SIMPLEX and it runs as
SIMPLEX. I
	> know the card supports FDX and I have seen it doing it. How do I
make it run
	> in full duplex? Don't know if driver supports FDX.
	Simplex is not the opposite of full-duplex.

	I didn't find an explanation of "simplex" in any manpage, but from
the
	system headers (<net/if.h>):
	#define IFF_SIMPLEX     0x800           /* can't hear own
transmissions */

	This means: The card can't receive what it sends. Full-duplex is
about
	receiveing foreign packages and sending at the same time.

	AFAIK: You (as a user) can ignore the simplex flag, the
	kernel must take care of it, so that a tcpdump (or something like
	that) will show packages sent out of the interface. 
	-- 
	Dies ist Thilos Unix Signature! Viel Spass damit.