From owner-freebsd-stable Tue Aug 18 17:20:45 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA07255 for freebsd-stable-outgoing; Tue, 18 Aug 1998 17:20:45 -0700 (PDT) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from couatl.uchicago.edu (couatl.uchicago.edu [128.135.21.64]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA07250 for ; Tue, 18 Aug 1998 17:20:43 -0700 (PDT) (envelope-from sfarrell@couatl.uchicago.edu) Received: (from sfarrell@localhost) by couatl.uchicago.edu (8.9.1/8.9.0) id TAA00653; Tue, 18 Aug 1998 19:20:01 -0500 (CDT) To: Tom Cc: Vadim Belman , "freebsd-stable@FreeBSD.ORG" Subject: Re: Intel EtherExpress Pro 10/100B network collisions References: From: stephen farrell Mime-Version: 1.0 (generated by tm-edit 7.108) Content-Type: text/plain; charset=US-ASCII Date: 18 Aug 1998 19:20:01 -0500 In-Reply-To: Tom's message of "Tue, 18 Aug 1998 10:10:30 -0700 (PDT)" Message-ID: <87af51bz66.fsf@couatl.uchicago.edu> Lines: 29 X-Mailer: Gnus v5.6.22/XEmacs 20.4 - "Emerald" Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Tom writes: > On Tue, 18 Aug 1998, Vadim Belman wrote: > > ... > > Surprisingly, we found that Intel board produces a _huge_ > > number of network collisions, almost for every output > > packet. > ... > > We have 3COM switches installed in our location. > > > > Did anyone experience the same or similar problem with > > cards in question? > > Yes, this will hapen if the card isn't configured with the same duplex > mode as the switch port it is plugged in. You might just need to do a > "ifconfig fxp0 mediaopt full-duplex" Note that full-duplex can also SLOW your network down. I don't understand this, and am too looking for answers. However, I switched a 100+ to full-duplex and went from 10Mbps -> 10bps transfer rates to a sparc/sol2.5 box on 10baseT LAN (though connections off the LAN were normal). Clearly some care needs to be taken in how to configure this card. -- Steve Farrell To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message