From owner-freebsd-stable Tue Aug 18 17:37:06 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA10634 for freebsd-stable-outgoing; Tue, 18 Aug 1998 17:37:06 -0700 (PDT) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from pop.uniserve.com (pop.uniserve.com [204.244.156.3]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id RAA10607 for ; Tue, 18 Aug 1998 17:37:02 -0700 (PDT) (envelope-from tom@uniserve.com) Received: from shell.uniserve.ca [204.244.186.218] by pop.uniserve.com with smtp (Exim 1.82 #4) id 0z8wEd-000146-00; Tue, 18 Aug 1998 17:36:19 -0700 Date: Tue, 18 Aug 1998 17:36:16 -0700 (PDT) From: Tom X-Sender: tom@shell.uniserve.ca To: stephen farrell cc: Vadim Belman , "freebsd-stable@FreeBSD.ORG" Subject: Re: Intel EtherExpress Pro 10/100B network collisions In-Reply-To: <87af51bz66.fsf@couatl.uchicago.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 18 Aug 1998, stephen farrell wrote: > 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 Yes, this setting must match the setting on your port on your switch. If you don't have a switch, it MUST be set to half-duplex. > 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. You probably have your card connected to a hub. This means that you MUST use half-duplex. > -- > > Steve Farrell Tom Systems Support Uniserve To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message