From mboxrd@z Thu Jan 1 00:00:00 1970 From: WeipingPan Subject: Re: Is 802.3ad mode in bonding useful ? Date: Fri, 29 Apr 2011 11:17:48 +0800 Message-ID: <4DBA2DDC.80502@gmail.com> References: <4DB9185E.4050103@gmail.com> <20110428122102.GB4165@hmsreliant.think-freely.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: Neil Horman Return-path: Received: from mail-vw0-f46.google.com ([209.85.212.46]:39530 "EHLO mail-vw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758158Ab1D2DRe (ORCPT ); Thu, 28 Apr 2011 23:17:34 -0400 Received: by vws1 with SMTP id 1so2459805vws.19 for ; Thu, 28 Apr 2011 20:17:33 -0700 (PDT) In-Reply-To: <20110428122102.GB4165@hmsreliant.think-freely.org> Sender: netdev-owner@vger.kernel.org List-ID: On 04/28/2011 08:21 PM, Neil Horman wrote: > On Thu, Apr 28, 2011 at 03:33:50PM +0800, WeipingPan wrote: >> Hi, all, >> >> 802.3ad mode in bonding implements 802.3ad standard. >> >> I am just wondering 802.3ad mode is useful, >> since bonding has many modes like balance-rr, active-backup, etc. >> > Yes, of course its usefull. For switches which support 802.3ad, this mode > allows for both peers to understand that the links in the bond are acting as an > aggregate, which makes it easier to prevent things like inadvertently looped > back frames, for which the other modes have to have all sorts of hacks to > prevent. What is looped back frames here ? I didn't see any special code to handle looped back frames in other modes in bonding, can you take an example ? thanks Weiping Pan > Neil >