From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: Is 802.3ad mode in bonding useful ? Date: Fri, 29 Apr 2011 08:21:02 -0700 Message-ID: <1304090462.9358.1617.camel@tardy> References: <4DB9185E.4050103@gmail.com> <20110428122102.GB4165@hmsreliant.think-freely.org> <4DBA2DDC.80502@gmail.com> <20110429104342.GA22387@hmsreliant.think-freely.org> <4DBAC552.507@hotmail.com> Reply-To: rick.jones2@hp.com Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Neil Horman , WeipingPan , netdev@vger.kernel.org To: John Lumby Return-path: Received: from g4t0017.houston.hp.com ([15.201.24.20]:45666 "EHLO g4t0017.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932177Ab1D2PVF (ORCPT ); Fri, 29 Apr 2011 11:21:05 -0400 In-Reply-To: <4DBAC552.507@hotmail.com> Sender: netdev-owner@vger.kernel.org List-ID: > >> What is looped back frames here ? > > In this case they are frames that get received by the bond, which the bond > > itself sent. In modes where more than one slave is active, and in which the > > switch has no additional knoweldge of the aggregate (e.g. round robin mode), the > > bond can send a frame on one slave, which the switch may broadcast to all ports, > > > Isn't this (broadcasting or repeating on all ports other than incoming) > more associated with simple hubs rather than switches? I would think > any switch with layer 2 capability does not do that (does it?) Perhaps when a frame is sent via the bond to a destination MAC not yet learned by the switch? Until a switch sees a MAC as a src, it does not know to which port the frame(s) should be forwarded, so it must send the frame out all ports but the ingress port. rick jones