Date: Tue, 31 Dec 2002 16:16:02 +0700 From: Eugene Grosbein <eugen@grosbein.pp.ru> To: "Matthew N. Dodd" <winter@jurai.net> Cc: "M. Warner Losh" <imp@bsdimp.com>, silby@silby.com, net@FreeBSD.ORG Subject: Re: ep(4) does not support mediaopt full-duplex Message-ID: <20021231161602.B69220@grosbein.pp.ru> In-Reply-To: <20021231011427.A45498-100000@sasami.jurai.net>; from winter@jurai.net on Tue, Dec 31, 2002 at 01:20:14AM -0500 References: <20021230.222103.07268910.imp@bsdimp.com> <20021231011427.A45498-100000@sasami.jurai.net>
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On Tue, Dec 31, 2002 at 01:20:14AM -0500, Matthew N. Dodd wrote: > This doesn't mean that the 3c589D will support Full-Duplex. > > I suspect that the windows driver offers that option (since it is probably > for whole family of cards) and doesn't do anything if the card doesn't > support it. > > Its likely that the 'fxp' card under windows is doing NWAY regardless of > control panel settings. Since the reported config is a cross-over > environment there isn't any way to tell for sure that windows runs the > 589D in full duplex mode. Well, I guess there is a way. I did one more thing. I booted my desktop with Intel card into FreeBSD and commanded # ifconfig fxp0 media 10baseT/UTP mediaopt full-duplex Then I booted the noteboot into Win95 with full duplex enabled on 3com card. I started FTP transfer from FreeBSD to Win95 and got 500KBps. Then I commanded # ifconfig fxp0 media 10baseT/UTP and ran transfer again. I got only 10-13KBps then. Then I changed 3com to half duplex, Windows rebooted and I got another 500KBps FTP tranfser, while fxp0 is still in half duplex mode. Then I commanded again: # ifconfig fxp0 media 10baseT/UTP mediaopt full-duplex And now I see only 40KBps. I think it shows duplex mismatch. I believe fxp(4) set duplex correctly, so it must be that 3c589D changes duplex really. Eugene Grosbein To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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