From owner-freebsd-questions@FreeBSD.ORG Thu Sep 1 18:12:18 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org 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 C33A116A41F for ; Thu, 1 Sep 2005 18:12:18 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from pi.codefab.com (pi.codefab.com [199.103.21.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4724B43D48 for ; Thu, 1 Sep 2005 18:12:17 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from localhost (localhost [127.0.0.1]) by pi.codefab.com (Postfix) with ESMTP id 937D15DE0; Thu, 1 Sep 2005 14:12:16 -0400 (EDT) Received: from pi.codefab.com ([127.0.0.1]) by localhost (pi.codefab.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 42682-01; Thu, 1 Sep 2005 14:12:11 -0400 (EDT) Received: from [192.168.1.3] (pool-68-161-79-217.ny325.east.verizon.net [68.161.79.217]) by pi.codefab.com (Postfix) with ESMTP id 37D035CA7; Thu, 1 Sep 2005 14:12:11 -0400 (EDT) Message-ID: <4317447C.6030201@mac.com> Date: Thu, 01 Sep 2005 14:12:12 -0400 From: Chuck Swiger Organization: The Courts of Chaos User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.11) Gecko/20050801 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Greg Barniskis References: <20050901124405.GA6432@darth-vader.org> <43171963.80502@mac.com> <20050901153458.GA39443@darth-vader.org> <43173FC9.5050707@scls.lib.wi.us> In-Reply-To: <43173FC9.5050707@scls.lib.wi.us> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at codefab.com Cc: Bryan Albright , freebsd-questions@freebsd.org Subject: Re: How can I stop "discard oversize frame" errors? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Sep 2005 18:12:18 -0000 Greg Barniskis wrote: [ ... ] >> I've tried to do that, but the fxp cards do not seem to allow >> modifying the mtu settings. It does have the capability of modifying >> the vlanmtu, but I don't know if this will affect/help this issue. > > Isn't this message being generated when the router sends a packet that > exceeds fxp0's MTU, so... the solution is to tune the router's MTU, > rather than fxp0? I am admittedly just guessing, but intuitively that > seems right. You want to tune the MTU of whatever is generating the oversize packets, agreed. The messages in syslog do not reveal the source of the oversize packets, but "tcpdump -n greater 1520" should. -- -Chuck