From owner-freebsd-net@FreeBSD.ORG Wed Jul 6 21:55:54 2011 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5983A106564A; Wed, 6 Jul 2011 21:55:54 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: from mail-iw0-f182.google.com (mail-iw0-f182.google.com [209.85.214.182]) by mx1.freebsd.org (Postfix) with ESMTP id 11DC18FC17; Wed, 6 Jul 2011 21:55:53 +0000 (UTC) Received: by iwr19 with SMTP id 19so415862iwr.13 for ; Wed, 06 Jul 2011 14:55:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:date:to:cc:subject:message-id:reply-to:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; bh=vsudQOi0U7YIL/GKpV7baqVnuWZl3V/y2+Cs/AJRvks=; b=VKudPXx3R6L9zj+XzTGrDSq/A9ulUkU58gIxUDvhFCLA9gS1niV3qK/xH2bQ4vcpQv e2yTFqRL6tEOKEBd93Ggo3oU7ZDkfL6PF2+E0M+LGL1LgEqenzZOOspg8PpZyD9d34QJ uI1hTVZoCKbkjCtnQ/NwwLgcKwzPO+yZW6Xko= Received: by 10.42.162.198 with SMTP id z6mr92557icx.233.1309989353346; Wed, 06 Jul 2011 14:55:53 -0700 (PDT) Received: from pyunyh@gmail.com ([174.35.1.224]) by mx.google.com with ESMTPS id fw9sm5084163ibb.30.2011.07.06.14.55.51 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 06 Jul 2011 14:55:52 -0700 (PDT) Received: by pyunyh@gmail.com (sSMTP sendmail emulation); Wed, 06 Jul 2011 14:54:21 -0700 From: YongHyeon PYUN Date: Wed, 6 Jul 2011 14:54:21 -0700 To: David Christensen Message-ID: <20110706215421.GC5559@michelle.cdnetworks.com> References: <20110706201509.GA5559@michelle.cdnetworks.com> <5D267A3F22FD854F8F48B3D2B523819385C32D9115@IRVEXCHCCR01.corp.ad.broadcom.com> <20110706214016.GB5559@michelle.cdnetworks.com> <5D267A3F22FD854F8F48B3D2B523819385C32D912B@IRVEXCHCCR01.corp.ad.broadcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5D267A3F22FD854F8F48B3D2B523819385C32D912B@IRVEXCHCCR01.corp.ad.broadcom.com> User-Agent: Mutt/1.4.2.3i Cc: Charles Sprickman , David Christensen , "freebsd-net@freebsd.org" Subject: Re: bce packet loss X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: pyunyh@gmail.com List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Jul 2011 21:55:54 -0000 On Wed, Jul 06, 2011 at 02:47:24PM -0700, David Christensen wrote: > > > > Data sheet says IfHCInBadOctets indicates number of octets received > > > > on the interface, including framing characters for packets that > > > > were dropped in the MAC for any reason. > > > > > > The IfHcInBadOctets counter says the controller received X bytes > > > that were bad on the wire (collisions, FCS errors, etc.). A value > > > > I thought that too. But other counters such as FCS, FAE, Collisions, > > Jabbers were all zero. > > > > Also includes frames dropped due to an incorrect destination MAC > address (i.e. perfect MAC filter mismatch). This means the NIC Thanks, that explains it. :-) > received a unicast frame for a MAC address that doesn't match the > NIC's MAC address. Very common on a hub and occurs occasionally > on switches as well. > > Dave > >