From owner-freebsd-net@FreeBSD.ORG Fri Sep 13 07:42:50 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id ACA17654 for ; Fri, 13 Sep 2013 07:42:50 +0000 (UTC) (envelope-from marek_sal@wp.pl) Received: from mx3.wp.pl (mx3.wp.pl [212.77.101.7]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 2FFD72DBE for ; Fri, 13 Sep 2013 07:42:49 +0000 (UTC) Received: (wp-smtpd smtp.wp.pl 20093 invoked from network); 13 Sep 2013 09:42:47 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wp.pl; s=1024a; t=1379058167; bh=oiAbDm/qY6O0/MehpQAi4XY4llipavgbIbtLNbhbqn0=; h=From:To:CC:Subject; b=H3zJpbP4Sw2oPgdfZ+2NvicYlkDt01zTkAddoY+n7/6zRmS9ww9vV78p3QVqnZwNg 1J7w0imNXH4SSxQ9ea8bKNrOoRokmzIDxehGtc4e+Zi8SNN/W1OW4wfgfgkuZkfo0S B7c9LQRge1V1Eud1y808pCwZDWcnVQRpVGlugjZk= Received: from user-164-126-70-132.play-internet.pl (HELO [192.168.1.112]) (marek_sal@[164.126.70.132]) (envelope-sender ) by smtp.wp.pl (WP-SMTPD) with CAMELLIA256-SHA encrypted SMTP for ; 13 Sep 2013 09:42:47 +0200 Message-ID: <5232C1F8.1080600@wp.pl> Date: Fri, 13 Sep 2013 09:42:48 +0200 From: Marek Salwerowicz User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130801 Thunderbird/17.0.8 MIME-Version: 1.0 To: Mark van der Meulen Subject: Re: igb Intel Gigabit Network Connection I350, lagg, vlan - increase mtu References: <522DC6DE.3040908@wp.pl> <522DC7DD.705@wp.pl> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-WP-DKIM-Status: good (id: wp.pl) X-WP-AV: skaner antywirusowy poczty Wirtualnej Polski S. A. X-WP-SPAM: NO 0000000 [0SOM] Cc: freebsd-net@freebsd.org, Marek Salwerowicz X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Sep 2013 07:42:50 -0000 W dniu 2013-09-09 15:11, Mark van der Meulen pisze: > As far as I can tell, if you are using the links in a lagg then you are going to need to make the change in /etc/rc.conf and reboot or perhaps restart netif. I recently came across a similar situation where I had to change the MTU across a bunch of different bsdrp boxes running as firewalls and routers and in the end after a lot of research I worked out the only way was either a reboot or possibly a restart of networking. Some machines had Intel(em) and Broadcom(bcd and bge) interfaces. > > I never tried restarting networking as there are a few things on my boxes which that will break so I am better off just rebooting. Hi, after setting up in /etc/rc.conf: ifconfig_igb{0,1,2,3}="mtu 9000 up" and rebooting everything worked and I have mtu 9000 in lagg0 and 2 vlans Thanks for hints! -- Marek Salwerowicz