From owner-freebsd-questions@FreeBSD.ORG Tue Oct 5 09:41:49 2004 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 9C56A16A4CE for ; Tue, 5 Oct 2004 09:41:49 +0000 (GMT) Received: from smtp.infracaninophile.co.uk (smtp.infracaninophile.co.uk [81.2.69.218]) by mx1.FreeBSD.org (Postfix) with ESMTP id 56DD943D62 for ; Tue, 5 Oct 2004 09:41:48 +0000 (GMT) (envelope-from m.seaman@infracaninophile.co.uk) Received: from happy-idiot-talk.infracaninophile.co.uk (localhost [IPv6:::1]) i959fh2k011172 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 5 Oct 2004 10:41:43 +0100 (BST) (envelope-from matthew@happy-idiot-talk.infracaninophile.co.uk) Received: (from matthew@localhost)i959fhj1011171 for freebsd-questions@freebsd.org; Tue, 5 Oct 2004 10:41:43 +0100 (BST) (envelope-from matthew) Date: Tue, 5 Oct 2004 10:41:43 +0100 From: Matthew Seaman To: freebsd-questions@freebsd.org Message-ID: <20041005094143.GB9642@happy-idiot-talk.infracaninophile.co.uk> Mail-Followup-To: Matthew Seaman , freebsd-questions@freebsd.org References: <20041004222645.GW3633@gentoo-npk.bmp.ub> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="3uo+9/B/ebqu+fSQ" Content-Disposition: inline In-Reply-To: <20041004222645.GW3633@gentoo-npk.bmp.ub> User-Agent: Mutt/1.4.2.1i X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.5.6 (smtp.infracaninophile.co.uk [IPv6:::1]); Tue, 05 Oct 2004 10:41:43 +0100 (BST) X-Virus-Scanned: clamd / ClamAV version devel-20040904, clamav-milter version 0.75l on smtp.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, hits=-4.8 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=2.64 X-Spam-Checker-Version: SpamAssassin 2.64 (2004-01-11) on happy-idiot-talk.infracaninophile.co.uk Subject: Re: netstat 'Ierrs' - meaning and possible causes 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: Tue, 05 Oct 2004 09:41:49 -0000 --3uo+9/B/ebqu+fSQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Oct 04, 2004 at 04:26:45PM -0600, Nathan Kinkade wrote: > What possible type of errors comprise 'Ierrs'? Here is an example of > the output: >=20 > Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll > xl0 1500 92977239 5723973 95001292 0 2070292 >=20 > According to this, input errors amount to about 6% of the total input > packets. This number definitely exceeds the level of acceptable errors, > but since I'm not quite sure what Ierrs signifies I'm not sure where to > begin. Bad hardware or media? Are Ierrs received packets that are > identifiable by a header, but otherwise mangled? Yes -- this sort of error rate is almost always going to be bad hardware, given that you're on an ethernet network. (Things may be different for wireless). Since it's only affecting the receive side of one network card, it may well be just that the network cable has been kinked or that there's a bad spot in one of the conductors. It can even be simply that some RJ45 plugs aren't pushed into their sockets quite right. Generally that results in signals being reflected off the fault and so interfering with themselves. Try swapping in a new network cable -- at least it's fairly cheap if that is the case. Other causes can be broken network card on the PC, broken port on your switch. I should be pretty easy to diagnose by swapping cards in and out and so forth. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks Savill Way PGP: http://www.infracaninophile.co.uk/pgpkey Marlow Tel: +44 1628 476614 Bucks., SL7 1TH UK --3uo+9/B/ebqu+fSQ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBYmxXiD657aJF7eIRAnftAKCy+1ypUTVrEOQgRx+byeKSIkmjzACfaeVx +mMnhp042RVF8rg6K5vOm+I= =0Ibd -----END PGP SIGNATURE----- --3uo+9/B/ebqu+fSQ--