From owner-freebsd-net Fri May 17 7:42:13 2002 Delivered-To: freebsd-net@freebsd.org Received: from arjun.niksun.com (gwnew.niksun.com [63.148.27.34]) by hub.freebsd.org (Postfix) with ESMTP id CC7BA37B40A for ; Fri, 17 May 2002 07:42:05 -0700 (PDT) Received: from there (localhost.niksun.com [127.0.0.1]) by arjun.niksun.com (8.9.3/8.9.3) with SMTP id KAA15877; Fri, 17 May 2002 10:41:52 -0400 (EDT) (envelope-from arao@niksun.com) Message-Id: <200205171441.KAA15877@arjun.niksun.com> Content-Type: text/plain; charset="iso-8859-1" From: Amit Rao To: jimmy@CS.cofc.EDU Subject: for networking course exercises Re: [freebsd-net] Date: Fri, 17 May 2002 10:45:59 -0400 X-Mailer: KMail [version 1.3.2] References: <1021596067.311.91849.m12@yahoogroups.com> In-Reply-To: <1021596067.311.91849.m12@yahoogroups.com> Cc: freebsd-net@freebsd.org MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Jimmy, Take a look at http://www.netlab.ohio-state.edu/cise/ On Thursday 16 May 2002 08:41 pm, you wrote: >    Date: Thu, 16 May 2002 20:24:45 -0400 >    From: "James B. Wilkinson" > Subject: (unknown) > > I've got to teach a new graduate course in networking this fall. I'm > looking at using vol 1 and maybe vol 2 of "TCP/IP Illustrated" by > Richard Stevens. The basic premise of the book seems to be to do > experiments on a working network in order to learn about the > protocols. One thing that I thought about doing is to have them do > that sort of thing here as well as to read about what he did to do > the book. It seemed useful to me to have some of the machines set up > with a version of FreeBSD that let you fool around with what the IP > and TCP layers were doing. E.g. introduce delays in the transmission > of ack's so that packets get retransmitted or so that you can watch > the RTT estimate catch up. Maybe pick out particular TCP segments and > lose them. When I started looking at how one might do this, it seemed > like it might be hard. So I got to wondering if somebody had already > done it so that I don't have to. I have no idea how to do a Google > search for something like that. > > Do any of you guys know about any software like that. I spose it > would have to be a hacked version of a kernel. > > Thanks To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message