From owner-freebsd-questions Sun Apr 2 0:57: 1 2000 Delivered-To: freebsd-questions@freebsd.org Received: from ns1.networkiowa.com (ns1.networkiowa.com [209.234.64.192]) by hub.freebsd.org (Postfix) with ESMTP id 477D437BCD3 for ; Sun, 2 Apr 2000 00:56:54 -0800 (PST) (envelope-from johnl@raccoon.com) Received: from raccoon.com (dsl.72.145.networkiowa.com [209.234.72.145]) by ns1.networkiowa.com (8.9.3/8.9.3) with ESMTP id DAA14713; Sun, 2 Apr 2000 03:59:54 -0500 Message-ID: <38E70B57.B66CD842@raccoon.com> Date: Sun, 02 Apr 2000 03:56:55 -0500 From: John Lengeling X-Mailer: Mozilla 4.7 [en] (Win98; I) X-Accept-Language: en MIME-Version: 1.0 To: Veaceslav Revutchi Cc: freebsd-questions@FreeBSD.ORG Subject: Re: late collisions, how to detect them? References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I think freebsd just increments the input/output error counter on the device driver for ethernet errors like late collisions, bad checksums, and frame alignment. The netstat -i command lists the input/output errors. The driver for the ethernet card would have access to what ever the ethernet chip tracks. You could write a program to get the individual error counts. If you see your ierror or oerror counters increasing between a couple of invocations of netstat -i, you have a physical layer problem. Check the transeiver, cabling, nic card. johnl Veaceslav Revutchi wrote: > > Hello, > > How can one detect on a FreeBSD machine if there is late collisions > happening on the LAN? > I had a problem recently with a faulty card which was causing late > collisions and I was happy to have a cisco router on the same segment > which reported late collisions so at least I knew I have to look for > a troubled card. > > thank you. > Veaceslav > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message