From owner-freebsd-questions@FreeBSD.ORG Thu Sep 1 15:48:27 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 D7D8A16A41F for ; Thu, 1 Sep 2005 15:48:27 +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 79D4843D49 for ; Thu, 1 Sep 2005 15:48:27 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from localhost (localhost [127.0.0.1]) by pi.codefab.com (Postfix) with ESMTP id BE3A05E18; Thu, 1 Sep 2005 11:48:26 -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 42033-02; Thu, 1 Sep 2005 11:48:24 -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 D219E5D8C; Thu, 1 Sep 2005 11:48:23 -0400 (EDT) Message-ID: <431722C9.9080608@mac.com> Date: Thu, 01 Sep 2005 11:48:25 -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: Bryan Albright References: <20050901124405.GA6432@darth-vader.org> <43171963.80502@mac.com> <20050901153458.GA39443@darth-vader.org> In-Reply-To: <20050901153458.GA39443@darth-vader.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at codefab.com Cc: 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 15:48:28 -0000 Bryan Albright wrote: > On 09/01/05 at 11:08AM, Chuck Swiger wrote: >>>fxp0: discard oversize frame (ether type 800 flags 3 len 1573 > max 1514) >>>fxp0: discard oversize frame (ether type 800 flags 3 len 1533 > max 1514) >>>fxp0: discard oversize frame (ether type 5555 flags 3 len 1520 > max 1514) >>>fxp0: discard oversize frame (ether type 800 flags 3 len 1564 > max 1514) >>> >>>I have 2 NICs in my machine, both intel etherexpress pro: >> >>Try setting an mtu of 1450 or so. You can add that to the ifconfig lines >>in /etc/rc.conf, or run "ifconfig fxp0 mtu 1400" directly. > > 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. Of course, it may be some other machine on your network which is generating those oversize packets, or someone may be using some form of encapsulation (PPTP?) which is pushing the frame size above the limit. tcpdump would help... -- -Chuck PS: Oh, BTW, the fxp cards absolutely let you change the mtu? What does ifconfig say...?