From owner-freebsd-atm Fri Jul 30 8:14:40 1999 Delivered-To: freebsd-atm@freebsd.org Received: from btm4r4.alcatel.be (btm4r4.alcatel.be [195.207.101.110]) by hub.freebsd.org (Postfix) with ESMTP id 65ED514C9A for ; Fri, 30 Jul 1999 08:14:28 -0700 (PDT) (envelope-from livensw@rc.bel.alcatel.be) Received: from btmq9s.rc.bel.alcatel.be (btmq9s.rc.bel.alcatel.be [138.203.65.182]) by btm4r4.alcatel.be (8.9.1a/8.9.1) with ESMTP id RAA08657; Fri, 30 Jul 1999 17:13:51 +0200 (MET DST) Received: from btm0uk.rc.bel.alcatel.be (btm0uk [138.203.64.189]) by btmq9s.rc.bel.alcatel.be (8.8.8+Sun/8.8.8) with ESMTP id RAA07595; Fri, 30 Jul 1999 17:16:17 +0200 (MET DST) Received: (from livensw@localhost) by btm0uk.rc.bel.alcatel.be (8.8.8+Sun/8.8.8) id RAA09347; Fri, 30 Jul 1999 17:14:02 +0200 (MET DST) Date: Fri, 30 Jul 1999 17:14:02 +0200 From: Wim Livens To: Mike Tancsa Cc: freebsd-atm@freebsd.org Subject: Re: NIC questions Message-ID: <19990730171402.I20292@rc.bel.alcatel.be> References: <4.1.19990726222130.03ca7500@granite.sentex.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.5i In-Reply-To: <4.1.19990726222130.03ca7500@granite.sentex.ca>; from Mike Tancsa on Mon, Jul 26, 1999 at 11:04:17PM -0400 Sender: owner-freebsd-atm@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Mon, Jul 26, 1999 at 11:04:17PM -0400, Mike Tancsa wrote: > Where can I find more information, such as if single mode fiber comes into > the building, but the interface is multimode (in this case the ENI), what > can I do to make it compatible. ? I've had the same problem, connecting multimode NICs to a singlemode switch. This was all in one room so I just used multimode fiber from the NIC to the switch and whatever fiber with an attenuator ($50) in the other direction. It was a trial and error thing but it's working now for over two years without any problem. You might have a problem in the NIC to outside direction. Connecting MM fiber to SM fiber will loose almost all of the signal but it might work if you use single mode fiber up to the NIC and use as little as possible connectors (they all loose some signal). -- Wim Livens. Alcatel - Corporate Research Center wim.livens@alcatel.be Fr. Wellesplein 1 livensw@rc.bel.alcatel.be B-2018 Antwerpen Tel: +32 3 240 7570 Belgium. Fax: +32 3 240 9932 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-atm" in the body of the message