From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 26 Jan 2001 10:25:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 26 Jan 2001 10:25:36 -0500 Received: from pcep-jamie.cern.ch ([137.138.38.126]:54799 "EHLO pcep-jamie.cern.ch") by vger.kernel.org with ESMTP id ; Fri, 26 Jan 2001 10:25:22 -0500 Date: Fri, 26 Jan 2001 16:24:27 +0100 From: Jamie Lokier To: "David S. Miller" Cc: Lars Marowsky-Bree , James Sutherland , Matti Aarnio , "H. Peter Anvin" , linux-kernel@vger.kernel.org Subject: Re: hotmail not dealing with ECN Message-ID: <20010126162427.D7096@pcep-jamie.cern.ch> In-Reply-To: <20010126124426.O2360@marowsky-bree.de> <20010126154447.L3849@marowsky-bree.de> <20010126160342.B7096@pcep-jamie.cern.ch> <14961.37986.469902.496834@pizda.ninka.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <14961.37986.469902.496834@pizda.ninka.net>; from davem@redhat.com on Fri, Jan 26, 2001 at 07:14:42AM -0800 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org David S. Miller wrote: > > Does ECN provide perceived benefits to the node using it? > > Yes, endpoints and intermediate routers can tell the TCP sender about > congestion instead of TCP having to guess about it based upon observed > packet drop. > > It is a major enhancement to performance over any WAN. > > The endpoint based congestion notification happens _now_ if both > sides speak ECN. The router based notification will be happening > in the near future as Cisco and others deploy ECN speaking versions of > their router software. So there is no need to force everyone to upgrade to ECN right away. They will eventually do so for the performance increase. Presumably ISPs also benefit from ECN because they need less bandwidth for the same traffic -- fix your firewall and SAVE MONEY on pipes!!! -- Jamie - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/