Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S270022AbTHFQ2T (ORCPT ); Wed, 6 Aug 2003 12:28:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S270219AbTHFQ2S (ORCPT ); Wed, 6 Aug 2003 12:28:18 -0400 Received: from zcars0m9.nortelnetworks.com ([47.129.242.157]:3781 "EHLO zcars0m9.nortelnetworks.com") by vger.kernel.org with ESMTP id S270022AbTHFQ1e (ORCPT ); Wed, 6 Aug 2003 12:27:34 -0400 Message-ID: <3F312C65.9000201@nortelnetworks.com> Date: Wed, 06 Aug 2003 12:27:17 -0400 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Chris Friesen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.8) Gecko/20020204 X-Accept-Language: en-us MIME-Version: 1.0 To: Andy Isaacson Cc: Werner Almesberger , linux-kernel@vger.kernel.org Subject: Re: TOE brain dump References: <20030802140444.E5798@almesberger.net> <3F2BF5C7.90400@us.ibm.com> <3F2C0C44.6020002@pobox.com> <20030802184901.G5798@almesberger.net> <20030804162433.L5798@almesberger.net> <20030806021304.E5798@almesberger.net> <20030806103758.H5798@almesberger.net> <20030806105830.B26920@hexapodia.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1377 Lines: 39 Andy Isaacson wrote: > On Wed, Aug 06, 2003 at 10:37:58AM -0300, Werner Almesberger wrote: > >>Eric W. Biederman wrote: >> >>>to keep your latency down. Do any ethernet switches do cut-through? >>> >>According to Google, many at least claim to do this. >> > > Do you have any references for this claim? I have never seen one that > panned out (at least not since the high-end-10mbps days). > > Just to be clear, I am asking for an example of a Gigabit Ethernet > switch that supports cut-through switching. I contend that there is no > such beast commercially available today. > > (It would be even more interesting if it could switch 9000-octet jumbo > frames, too.) A few seconds of googling shows that these claim it: http://www.blackbox.com.mx/products/pdf/europdf/81055.pdf http://www.directdial.com/dd2/images/pdf_specsheet/J4119AABA.pdf I'm sure there are others... Chris -- Chris Friesen | MailStop: 043/33/F10 Nortel Networks | work: (613) 765-0557 3500 Carling Avenue | fax: (613) 765-2986 Nepean, ON K2H 8E9 Canada | email: cfriesen@nortelnetworks.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/