From owner-freebsd-stable@FreeBSD.ORG Tue Jan 12 22:30:19 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DD3BB1065672 for ; Tue, 12 Jan 2010 22:30:19 +0000 (UTC) (envelope-from info@martenvijn.nl) Received: from smtp-vbr7.xs4all.nl (smtp-vbr7.xs4all.nl [194.109.24.27]) by mx1.freebsd.org (Postfix) with ESMTP id 796AE8FC16 for ; Tue, 12 Jan 2010 22:30:19 +0000 (UTC) Received: from [192.168.178.71] (martenvijn.xs4all.nl [80.101.161.153]) by smtp-vbr7.xs4all.nl (8.13.8/8.13.8) with ESMTP id o0CMUHp2028123; Tue, 12 Jan 2010 23:30:17 +0100 (CET) (envelope-from info@martenvijn.nl) From: Marten Vijn To: Marin Atanasov In-Reply-To: <717f7a3e1001120714m37aada69gfaa35f0f9b17f435@mail.gmail.com> References: <717f7a3e1001120714m37aada69gfaa35f0f9b17f435@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Date: Tue, 12 Jan 2010 23:30:16 +0100 Message-ID: <1263335416.7891.33.camel@mvn-desktop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: by XS4ALL Virus Scanner Cc: freebsd-stable@freebsd.org, freebsd-hardware@freebsd.org Subject: Re: Multiple serial consoles via null modem cable X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Jan 2010 22:30:19 -0000 On Tue, 2010-01-12 at 17:14 +0200, Marin Atanasov wrote: > Hello there, > > I'd like to ask you about the following - is it possible to have multiple > serial consoles coming from a single host? > > What I am talking about is connecting multiple machines using a null modem > cable - I know it is possible only to connect two machines and they need to > be connected on sio0 (COM1). > > I'm thinking about the following situation - 1 system acting like a host > with a serial port hub, each port of the hub is connected to a different > machine on sio0, using null modem cables. > > This would make the first machine something like a cheaper kind of a > terminal concentrator :) > > What do you think, have someone tried this and is it possible at all? I have a dozen UBS2serial (uplcom) up 24/7 over more than 6 months, on 8.0 (NanoBSD on ITX-board) in our serverrooms. They work pretty stable and are dead cheap. Max 20 Euro per line, including a null-modem adapter. like: http://www.gridconnect.com/numomatomadb.html or http://www.buyextras.com/numoaddb9fef.html I payed about ~3 dollars per adapter. (shipping to Europe was most expensive) Kind regards, Marten > > Thanks and regards, > DNAeon > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" -- http://www.voedselbankleiden.nl needs your help! http://martenvijn.nl http://bsd.wifisoft.org/nek/ http://opencommunitycamp.org OCC 2010