From owner-freebsd-current Sun Oct 5 18:54:37 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id SAA24314 for current-outgoing; Sun, 5 Oct 1997 18:54:37 -0700 (PDT) (envelope-from owner-freebsd-current) Received: from mail.uniserve.com (dns1-van.uniserve.com [204.244.163.48]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id SAA24306 for ; Sun, 5 Oct 1997 18:54:33 -0700 (PDT) (envelope-from tom@uniserve.com) Received: from shell.uniserve.com [204.244.210.252] by mail.uniserve.com with smtp (Exim 1.70 #1) id 0xI2G1-0006G6-00; Sun, 5 Oct 1997 18:46:49 -0700 Date: Sun, 5 Oct 1997 18:46:44 -0700 (PDT) From: Tom To: Terry Lambert cc: phk@critter.freebsd.dk, sthaug@nethelp.no, jas@flyingfox.com, freebsd-current@freebsd.org Subject: Re: Which PCI Ethernet card is best for FreeBSD-current? In-Reply-To: <199710060125.SAA02857@usr05.primenet.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Mon, 6 Oct 1997, Terry Lambert wrote: > > > > >However, currently ethernet interfaces that do not have carrier/link > > > > >active, still show us UP. I wish that loss of carrier/link would force > > > > >the interface into a DOWN state automatically. I realize this would > > > > >require some driver changes. > > > > > > > > Well, go for it :-) > > > > > > Question: If I DOWN an interface, do that effect its own transmission > > > of carrier/link? > > > > I think this is rather silly. You can't even control this on most > > cards. They transmit carrrier from power-up till power-off. I don't see > > any sense in it all. > > > > A configured ethernet device should always be attempting to get link. > > It would be nice if this link state was reflectetd in the interface state. > > If it's DOWN, what happens to the link state? Nothing. It is only DOWN if link/carrier is lost. If carrier/link is lost, set interface to DOWN. If carrier/link resumes set interface to UP. > Are you only considering 10bT here? Even 10b5 can detect loss of carrier, perhaps not all adapters. > Terry Lambert > terry@lambert.org > --- > Any opinions in this posting are my own and not those of my present > or previous employers. > > Tom