From owner-freebsd-questions Mon Oct 30 10:22:18 1995 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id KAA06958 for questions-outgoing; Mon, 30 Oct 1995 10:22:18 -0800 Received: from pelican.com (pelican.com [134.24.4.62]) by freefall.freebsd.org (8.6.12/8.6.6) with SMTP id KAA06951 for ; Mon, 30 Oct 1995 10:22:14 -0800 Received: from puffin.pelican.com by pelican.com with smtp (Smail3.1.28.1 #5) id m0t9yqT-000K2lC; Mon, 30 Oct 95 10:22 WET Received: by puffin.pelican.com (Smail3.1.29.1 #9) id m0t9yqR-0000ReC; Mon, 30 Oct 95 10:22 PST Message-Id: Date: Mon, 30 Oct 95 10:22 PST From: pete@puffin.pelican.com (Pete Carah) To: aevans@kaiwan.com Subject: Re: utp to utp networking ? Newsgroups: freebsd.questions In-Reply-To: <199510301804.KAA01166@kaiwan009.kaiwan.com> Cc: questions@freebsd.org Sender: owner-questions@freebsd.org Precedence: bulk In article <199510301804.KAA01166@kaiwan009.kaiwan.com> aevans writes: >This may be a little off base for this list, but . . . >I have two FreeBSD machines that have a 3c509 each. >I would like to plug a RJ45 into the UTP port on each >one and run a mini-lan between these two machines. OK so far. >Has anybody done this and if so, what steps did you >take in order to get this to work ? Is this even >possible in this configuration (no hub) ? Yes. It works fine with two caveats. 1. You need a special crossover arrangement; Eagle electronics (in Glendale) (at least) has plugs for this or you can make up a custom cable. If you choose to make a custom cable MAKE SURE IT'S MARKED because someone will get burned later if not. (I've been there several times :-) (also, if you have coax ethernets in a video house (also been there) make sure you get the green-colored terminators rather than plain metal ones. The possibilities for screwups there are endless :-) If you're in Orange County, Marvac/Dow or Orvac *may* have these plug adapters too. (actually you can use video cable and terminators on *short* ethernet runs. Don't mix either cable or terms, though...) 2. If you take one of the machines down you'll get a console message on the other of 'unexpected interrupt'. That can (at least for DEC 21040 boards) safely be ignored. Hubs inhibit this message. -- Pete