From owner-freebsd-net Wed Nov 20 4:45:14 2002 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0810937B408; Wed, 20 Nov 2002 04:45:12 -0800 (PST) Received: from exchange.wan.no (exchange.wan.no [80.86.128.88]) by mx1.FreeBSD.org (Postfix) with ESMTP id E3E7C43E75; Wed, 20 Nov 2002 04:45:10 -0800 (PST) (envelope-from sten.daniel.sorsdal@wan.no) content-class: urn:content-classes:message Subject: RE: duplicate packets in ping? MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Date: Wed, 20 Nov 2002 13:45:26 +0100 Message-ID: <0AF1BBDF1218F14E9B4CCE414744E70F07D1C5@exchange.wan.no> X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: duplicate packets in ping? Thread-Index: AcKQkYrXWz5ncS2SRZ2fBE2TpgIaBwAAHi6Q From: =?iso-8859-1?Q?Sten_Daniel_S=F8rsdal?= To: "Randall Stewart" , "shubha mr" Cc: , Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org I've had similar issue with Intel Ethernet controllers (i82562ET and = i82801BA/BAM). It was practically no load, and on the wire there was no duplicates but = ping got duplicates anyway. - It only happens sporadically and it = happens to about 10 boxes with the same FreeBSD version (exact same). Havent had the chance to dig into it though.... Same with you? -----Original Message----- From: Randall Stewart [mailto:randall@stewart.chicago.il.us]=20 Sent: 20. november 2002 13:34 To: shubha mr Cc: freebsd-questions@FreeBSD.ORG; freebsd-net@FreeBSD.ORG Subject: Re: duplicate packets in ping? shubha mr wrote: > Ping on my device driver (for my NIC )gives duplicate packets.does=20 > anyone know why they occur and how to eliminate them? > thanks > shubha >=20 > __________________________________________________ > Do You Yahoo!? > Everything you'll ever need on one web page > from News and Sport to Email and Music Charts http://uk.my.yahoo.com >=20 > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message >=20 >=20 I have noticed a similar occurance in some of my SCTP testing with all = of the BSD's. In particular the linksys pcmcia cards seem to do this. In = my testing and analysis this always seems to occur when the card is busy = and what happens is you lose some packet and another appears to be = duplicated... I traced this out with ethereal a while ago and then just = stopped using that card when I figured out it was some sort of circular = buffer issue.. I did not dig in and find out if it was the card or = driver... I rather suspect it is the card (since it is a low end one).. = but one never knows... R --=20 Randall R. Stewart randall@stewart.chicago.il.us 815-342-5222 (cell phone) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message