From owner-freebsd-stable Thu Apr 16 16:46:03 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id QAA17809 for freebsd-stable-outgoing; Thu, 16 Apr 1998 16:46:03 -0700 (PDT) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from freebie.dcfinc.com (freebie.dcfinc.com [138.113.2.8]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA17718 for ; Thu, 16 Apr 1998 23:45:46 GMT (envelope-from chad@freebie.dcfinc.com) Received: (from chad@localhost) by freebie.dcfinc.com (8.8.7/8.8.3a) id QAA09188; Thu, 16 Apr 1998 16:45:16 -0700 (MST) From: "Chad R. Larson" Message-Id: <199804162345.QAA09188@freebie.dcfinc.com> Subject: Re: various PCI Ethernet cards v.s. SMC Ethernet switches.... To: freebsd-stable@FreeBSD.ORG Date: Thu, 16 Apr 1998 16:45:15 -0700 (MST) Cc: freebsd-stable@FreeBSD.ORG In-Reply-To: <199804161611.MAA07218@brain.zeus.leitch.com> from "Greg A. Woods" at "Apr 16, 98 12:11:58 pm" Reply-to: chad@dcfinc.com X-Mailer: ELM [version 2.4ME+ PL22 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk > The cables seem OK -- they're all four-pair, and we've interchanged > them and used quite a number of different ones. We do not have a full > cable test set though, and have never verified that they work with > full-duplex connections between any other pieces of equipment. > However I think we can rule out cables when the switch still doesn't > work in half-duplex mode. I've run across some commercial cables that were manufactured with better (tighter twist, proper gauge wire) pairs on the pins you would use in half-duplex. The other two pairs were electrically connected, but not twisted and had thinner wire (maybe 26 gauge). I'd guess the manufacturer was trying to save money (and perhaps cable thickness) by scrimping on the part he figured you'd never use. -crl -- Chad R. Larson (CRL22) Brother, can you paradigm? 602-953-1392 chad@dcfinc.com chad@anasazi.com larson1@home.com DCF, Inc. - 14623 North 49th Place, Scottsdale, Arizona 85254 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message