From owner-freebsd-net@FreeBSD.ORG Thu Dec 18 16:15:53 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 897EE2FE for ; Thu, 18 Dec 2014 16:15:53 +0000 (UTC) Received: from mail-pa0-x233.google.com (mail-pa0-x233.google.com [IPv6:2607:f8b0:400e:c03::233]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4507F1223 for ; Thu, 18 Dec 2014 16:15:53 +0000 (UTC) Received: by mail-pa0-f51.google.com with SMTP id ey11so1680201pad.38 for ; Thu, 18 Dec 2014 08:15:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dpdtech.com; s=google; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=piVU0wtfimoBsO9GOVnAmFVQTJgbf1PYjysJItECP2M=; b=WSxcDMi2LpTu9MEvETtM7gFeOB5Y/0R3xjf18z5IlKQ0hQnqob+LXOKxgg233EO5Aj 6BCZSg+0H2+WDDOEVze0kGVUYmShYvLcMKqBK7+ZH7k94QqmDP0Cm027eDBtphmIze30 cKJbaEu1y0rKFw9F8S83wQbaTOYFQ/0XxeLVc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:content-type:mime-version:subject:from :in-reply-to:date:cc:content-transfer-encoding:message-id:references :to; bh=piVU0wtfimoBsO9GOVnAmFVQTJgbf1PYjysJItECP2M=; b=DOiE+qVf/gbGhirep+5zjVIxzi+sGVjHbQNf0bga7FgLlL16EY2fp9r5tC634kaQqG UpD/0RIgv9utwILNndutac3yuZnCBrTUYrIVgTqBChyHqi3w96pSqUXmlUpm6H4AZuwQ M8qYpQeGafnaexNCvGWWfoa2U5naShd/b6KhhgqwiZnfGQieni/m0YEIIfFpw3/Qz+Jk nsruzEei3/RC/yauuoJBIbQcvLFVvcDfvXaAVS0E+Mkgj9HZHvxihTAzbIwTG4d7ulzo EGPdWSY4T2/ci9LqAM5EtHPW3iUoVz7x1ORpLtAjU03zKsOQQJiaTSdUDjPPuq7YvE3S 9IQQ== X-Gm-Message-State: ALoCoQlz3Xzpl31aC5fT2WLvwmwmaJD4IzHaTbURAdQHhqEjbQxFmLtqKN2ft0Yuf6VfoeGJCEnZ X-Received: by 10.70.91.142 with SMTP id ce14mr4797483pdb.138.1418919352527; Thu, 18 Dec 2014 08:15:52 -0800 (PST) Received: from 173-13-188-41-sfba.hfc.comcastbusiness.net (173-13-188-41-sfba.hfc.comcastbusiness.net. [173.13.188.41]) by mx.google.com with ESMTPSA id x16sm7149534pbt.70.2014.12.18.08.15.51 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 18 Dec 2014 08:15:52 -0800 (PST) Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Subject: Re: FreeBSD 10-stable (r274577) LACP / IEEE 802.3ad with TP-Link TL-SG2008 - not working From: "David P. Discher" In-Reply-To: Date: Thu, 18 Dec 2014 08:16:04 -0800 Content-Transfer-Encoding: quoted-printable Message-Id: References: <1A44709E-7D0C-4932-8A28-383EAC3F340B@dpdtech.com> <9AE69175-92D9-49FA-A651-119C7046A1FA@dpdtech.com> <5480D8EF.9000804@egr.msu.edu> <3D993418-E632-44BA-8FE2-2F3F34188F20@dpdtech.com> <34276C9E-CAEF-4E3F-AA2A-568F2D3099EC@dpdtech.com> <2BCFC9D3-3B7D-421F-9FDA-0C4E1018F8F5@dpdtech.com> To: Craig Rodrigues X-Mailer: Apple Mail (2.1878.6) Cc: FreeBSD Net , Adam McDougall X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Dec 2014 16:15:53 -0000 On Dec 17, 2014, at 9:11 PM, Craig Rodrigues = wrote: >=20 >=20 > And here: >=20 > http://www-01.ibm.com/support/docview.wss?uid=3Disg1VM64842 >=20 Ah, wow =85 that IBM article - what I=92m seeing is the four-byte Frame = Check Sequence (FCS). I download the IEEE Std 802.1AX-2008 PDF, Figure = 5=968=97 LACPDU structure, page 33, shows this structure with the FCS = field. (802.3ad has evolved into 802.1AX) - The 802.3ad spec PDF is = $155.=20 It=92s unclear if this was added to a later version spec. And with FCS = field, FreeBSD LACP just does not work. So =85 it would seem that big = iron routers and switches either are not adding in the FCS field. Or - = it is possible, with how the IBM support article is written - it is = possibly this field might be getting stripped by some NIC hardware or = drivers. Ok =85 I=92m going to investigate this further. I=92m working on = getting/borrowing a few different vendors switches with LACP and see = what I can find out. - David P. Discher http://davidpdischer.com/ AIM: DavidDPD | Y!M: daviddpdz=20