From owner-freebsd-questions@FreeBSD.ORG Thu Dec 6 06:00:49 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id F27F11988 for ; Thu, 6 Dec 2012 06:00:49 +0000 (UTC) (envelope-from Olivier.Nicole@cs.ait.ac.th) Received: from mail.cs.ait.ac.th (mail.cs.ait.ac.th [192.41.170.16]) by mx1.freebsd.org (Postfix) with ESMTP id 96CB98FC0C for ; Thu, 6 Dec 2012 06:00:49 +0000 (UTC) Received: from mail.cs.ait.ac.th (localhost [127.0.0.1]) by mail.cs.ait.ac.th (Postfix) with ESMTP id 500BD3A387C for ; Thu, 6 Dec 2012 12:51:42 +0700 (ICT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cs.ait.ac.th; h= subject:subject:from:from:message-id:date:date:received:received :received; s=selector1; t=1354773102; x=1356587503; bh=EaYdlZYex jHSnSW8R5jAbnU1Eo/q9r+FhjgRd1xTRMY=; b=Zp82PE/xtyIyJJAJQLxEwMbDd rCgDFtwZnSowSOhpyDB0QNbPOSD6xrexHoFGvKoqUpR42GcPYYPAvOGrrNmIZfPJ hzfbEI8wQBUm9M/j5VtHRyidGJcEGW7wFLIFxFoftizH0RrQppsK+dDSZMn2dzaW 587+bYDiff1D/++bC4= X-Virus-Scanned: amavisd-new at cs.ait.ac.th Received: from mail.cs.ait.ac.th ([127.0.0.1]) by mail.cs.ait.ac.th (mail.cs.ait.ac.th [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id C4-SWl0uEvIk for ; Thu, 6 Dec 2012 12:51:42 +0700 (ICT) Received: from banyan.cs.ait.ac.th (banyan.cs.ait.ac.th [192.41.170.5]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.cs.ait.ac.th (Postfix) with ESMTPS id DFD003A3844 for ; Thu, 6 Dec 2012 12:51:41 +0700 (ICT) Received: (from on@localhost) by banyan.cs.ait.ac.th (8.14.5/8.14.5/Submit) id qB65phdO016130; Thu, 6 Dec 2012 12:51:43 +0700 (ICT) (envelope-from on) Date: Thu, 6 Dec 2012 12:51:43 +0700 (ICT) Message-Id: <201212060551.qB65phdO016130@banyan.cs.ait.ac.th> From: Olivier Nicole To: freebsd-questions@freebsd.org Subject: netstat -i X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 06 Dec 2012 06:00:50 -0000 Hello, I used netstat -i for the first time and I saw something I cannot understand: # netstat -ibh -I em1 Name Mtu Network Address Ipkts Opkts em1 9000 00:0e:0c:5c:32:29 92M 129M em1 9000 10.41.170/24 ufo2000 924K 926K I understand that the line reporting MAc address means the traffic seen at layer2, while the line reporting IP address means the traffic seen at layer3. How would that be possible to have suh a difference (on a switched network)? Best regards, Olivier