From owner-freebsd-net@FreeBSD.ORG Thu Apr 22 07:29:21 2004 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A587B16A4CE for ; Thu, 22 Apr 2004 07:29:21 -0700 (PDT) Received: from xorpc.icir.org (xorpc.icir.org [192.150.187.68]) by mx1.FreeBSD.org (Postfix) with ESMTP id 735F943D62 for ; Thu, 22 Apr 2004 07:29:21 -0700 (PDT) (envelope-from rizzo@icir.org) Received: from xorpc.icir.org (localhost [127.0.0.1]) by xorpc.icir.org (8.12.9p1/8.12.8) with ESMTP id i3METKgd026451; Thu, 22 Apr 2004 07:29:20 -0700 (PDT) (envelope-from rizzo@xorpc.icir.org) Received: (from rizzo@localhost) by xorpc.icir.org (8.12.9p1/8.12.3/Submit) id i3METK08026450; Thu, 22 Apr 2004 07:29:20 -0700 (PDT) (envelope-from rizzo) Date: Thu, 22 Apr 2004 07:29:20 -0700 From: Luigi Rizzo To: Heinz Knocke Message-ID: <20040422072920.A26354@xorpc.icir.org> References: <003301c42875$ccd62f10$df5561d9@ALFA> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <003301c42875$ccd62f10$df5561d9@ALFA>; from knockefreebsd@o2.pl on Thu, Apr 22, 2004 at 04:26:26PM +0200 cc: net@freebsd.org Subject: Re: simulating an LFN over 1Gb LAN Ethernet? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 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, 22 Apr 2004 14:29:21 -0000 On Thu, Apr 22, 2004 at 04:26:26PM +0200, Heinz Knocke wrote: > Hi! > > I'd like to simulate an LFN over LAN - my idea is to install testing software on 2 hosts, traffic between them would be routed by the 3rd one - a FreeBSD based router. To simulate long RTT the router would have to delay packet forwarding in at least one direction - does anyone know how to do it? Is it at all possible withou some changes in kernel source code? http://info.iet.unipi.it/~luigi/ip_dummynet/ luigi