From owner-freebsd-current Thu Feb 24 11:15:23 2000 Delivered-To: freebsd-current@freebsd.org Received: from area51.v-wave.com (area51.v-wave.com [24.108.26.39]) by hub.freebsd.org (Postfix) with SMTP id CE5F337BF1D for ; Thu, 24 Feb 2000 11:15:20 -0800 (PST) (envelope-from flatline@area51.v-wave.com) Received: (qmail 2437 invoked by uid 1001); 24 Feb 2000 19:16:11 -0000 Date: Thu, 24 Feb 2000 12:16:11 -0700 From: Chris Wasser To: Dieter Rothacker Cc: freebsd-current@FreeBSD.ORG Subject: Re: dc0 wierdness with Compex Freedomline Message-ID: <20000224121611.A2411@area51.v-wave.com> References: <20000224120438.A24299@shadowmere.student.utwente.nl> <20000224102131.A1796@area51.v-wave.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: ; from didi@Xterminator.STUDFB.UniBw-Muenchen.de on Thu, Feb 24, 2000 at 07:48:35PM +0100 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, Feb 24, 2000 at 07:48:35PM +0100, Dieter Rothacker wrote: > No, it is not. It is 100Mbps upstream and 100Mbps downstream. You cannot get > 200Mbps in one direction. FDX (Full Duplex) simply means that the RX and TX > cables are used simultaneous. Due to the small ethernet frame size, it is > next to impossible to get the full speed for data transmission. You're right, I stand corrected. FDX is 100Mbps wide, but bi-directional, so it's only 12MB/s maximum theoretical speed (not including protocol overhead and what-not) .. I was basing the original opinion posted on assumed total bandwidth (100Mbps both ways) which is incorrect. I apologize for my ignorance :) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message