From owner-freebsd-hackers Sat Sep 27 05:39:56 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id FAA21526 for hackers-outgoing; Sat, 27 Sep 1997 05:39:56 -0700 (PDT) Received: from verdi.nethelp.no (verdi.nethelp.no [195.1.171.130]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id FAA21512 for ; Sat, 27 Sep 1997 05:39:49 -0700 (PDT) From: sthaug@nethelp.no Received: (qmail 17059 invoked by uid 1001); 27 Sep 1997 12:39:45 +0000 (GMT) To: tlambert@primenet.com Cc: hackers@FreeBSD.ORG, stable@FreeBSD.ORG Subject: Re: 'fxp' driver/hardware lossage (was Re: Alexander B. Povol's mail) In-Reply-To: Your message of "Sat, 27 Sep 1997 11:42:14 +0000 (GMT)" References: <199709271142.EAA24360@usr04.primenet.com> X-Mailer: Mew version 1.05+ on Emacs 19.28.2 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Date: Sat, 27 Sep 1997 14:39:45 +0200 Message-ID: <17057.875363985@verdi.nethelp.no> Sender: owner-freebsd-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > That's only true of coaxial media. Over twisted pair, if you see > > data start arriving on the receive pair while your transmitting then > > you have to assume that the data is being sent by another station > > and you've got a collision situation. > > Isn't this the hub's responsibility to distinguish and prevent? Nope. A hub doesn't do anything with collisions - it just propagates them bit by bit. The NICs sense the collision. Steinar Haug, Nethelp consulting, sthaug@nethelp.no