From owner-freebsd-questions@FreeBSD.ORG Mon Mar 31 07:06:49 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E1D6C37B401 for ; Mon, 31 Mar 2003 07:06:49 -0800 (PST) Received: from grumpy.dyndns.org (user-24-214-34-52.knology.net [24.214.34.52]) by mx1.FreeBSD.org (Postfix) with ESMTP id 26E9D43FA3 for ; Mon, 31 Mar 2003 07:06:49 -0800 (PST) (envelope-from dkelly@grumpy.dyndns.org) Received: from grumpy.dyndns.org (localhost [127.0.0.1]) by grumpy.dyndns.org (8.12.8/8.12.7) with ESMTP id h2VF6l2T061355; Mon, 31 Mar 2003 09:06:47 -0600 (CST) (envelope-from dkelly@grumpy.dyndns.org) Received: (from dkelly@localhost) by grumpy.dyndns.org (8.12.8/8.12.7/Submit) id h2VF6iKh061354; Mon, 31 Mar 2003 09:06:44 -0600 (CST) Date: Mon, 31 Mar 2003 09:06:44 -0600 From: David Kelly To: "Jack L. Stone" Message-ID: <20030331150644.GB61141@grumpy.dyndns.org> References: <3.0.5.32.20030331082034.01414bf8@sage-one.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3.0.5.32.20030331082034.01414bf8@sage-one.net> User-Agent: Mutt/1.4.1i cc: freebsd-questions@freebsd.org Subject: Re: Interface collisions X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 31 Mar 2003 15:06:53 -0000 On Mon, Mar 31, 2003 at 08:20:34AM -0600, Jack L. Stone wrote: > For the first time within the past few days, I've noticed collisions being > reported on the public NIC for one of the servers. I'm not sure if it means > the switch or the NIC is the culprit, so not sure which component may need > to be replaced. > > Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll > rl1 1500 00:40:33:5b:bb:5f 6816063 0 7494432 0 66977 Lets see, 67e3 packets had to be retried within their first 64 octets out of 7.5e6 sent. Actually thats pretty darn good. But ideally if you are connected to a full duplex switch it should not happen. "Ideally". I have no idea how a switch behaves when its caches are momentarily full but I would guess forcing a "collision" might be a politer means with faster recovery to back off senders than to simply drop the packet. Then again a RealTek NIC is the scum at the bottom of the NIC bucket. -- David Kelly N4HHE, dkelly@hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system.