From owner-freebsd-net@FreeBSD.ORG Tue Feb 25 07:24:44 2014 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 ESMTPS id DA80C40A for ; Tue, 25 Feb 2014 07:24:43 +0000 (UTC) Received: from mail-pd0-f178.google.com (mail-pd0-f178.google.com [209.85.192.178]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id B359114ED for ; Tue, 25 Feb 2014 07:24:43 +0000 (UTC) Received: by mail-pd0-f178.google.com with SMTP id fp1so7400965pdb.23 for ; Mon, 24 Feb 2014 23:24:42 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:date:message-id:subject:from:to :content-type; bh=9AWWlYydHS+IEJdqsvKhZKaN8nFVTaEw7Q+AcdC7CuQ=; b=NPyCtbMbVMoE8WyRBeMeG90Il5HlZVQksJFhycIJhLgc/tMYVqUyUizNPgVCbb5QZw V4ESOGmVf2FMlmSauLGN8ySf7T9Xs9lfl0rM86EYHuP6AK131DHh3pj8anCEFSy97jf/ cQEBzayPn0QvK+dJTOkwrNWXbOt5CgEjOwkeEIJpaLCDYphEEFXYoQXO9Uh6H0AkNQ3V 0BmGIfJ2/nRQuk/p9cfvKu7f+eoAzneqt2Ggc5DfTb6m+5gHukBmbH1FoWhJ0F4/sHEe d9Jduu9E0i2adUwO6zSBK81d0KK70nyinlSESZ9m/716BlwW5ZkKCEGELTrqa+rE1O2S QWeQ== X-Gm-Message-State: ALoCoQm56vP/IJHgQFnrVuT1CdiixTuJL5UlXyNM2VC3QE7bUZ9Fj3Ew7flr00O88g8pwDHBGK0F MIME-Version: 1.0 X-Received: by 10.68.163.3 with SMTP id ye3mr4899871pbb.78.1393312742067; Mon, 24 Feb 2014 23:19:02 -0800 (PST) Received: by 10.68.111.37 with HTTP; Mon, 24 Feb 2014 23:19:01 -0800 (PST) Date: Tue, 25 Feb 2014 08:19:01 +0100 Message-ID: Subject: Network loss From: Johan Kooijman To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.17 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Feb 2014 07:24:44 -0000 Hi all, I have a weird situation here where I can't get my head around. One FreeBSD 9.2-STABLE ZFS/NFS box, multiple Linux clients. Once in a while the Linux clients loose their NFS connection: Feb 25 06:24:09 hv3 kernel: nfs: server 10.0.24.1 not responding, timed out Not all boxes, just one out of the cluster. The weird part is that when I try to ping a Linux client from the FreeBSD box, I have between 10 and 30% packetloss - all day long, no specific timeframe. If I ping the Linux clients - no loss. If I ping back from the Linux clients to FBSD box - no loss. The errors I get when pinging a Linux client is this one: ping: sendto: File too large What we already did: - switched interfaces in the FreeBSD box: switched from ixgbe to a gbe interface. Both have the same issue. - After that I configured the ixgbe interface with a different IP & subnet and I'm able to ping without any issue to any client. - Verified MTU's - all default; - Cheched switch config - is empty now, it's as much configured as a fridge :) Any hints on where to search from here? -- Met vriendelijke groeten / With kind regards, Johan Kooijman T +31(0) 6 43 44 45 27 F +31(0) 162 82 00 01 E mail@johankooijman.com