From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: want to randomly drop packets based on percent Date: Mon, 17 Apr 2006 09:46:34 -0700 Message-ID: <20060417094634.7191fea5@localhost.localdomain> References: <444345F9.4090100@cmu.edu> <20060417091915.67e28361@localhost.localdomain> <4444171B.90507@cmu.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, matt.keenan@btinternet.com Return-path: Received: from smtp.osdl.org ([65.172.181.4]:59082 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1750734AbWDQQqg (ORCPT ); Mon, 17 Apr 2006 12:46:36 -0400 To: George Nychis In-Reply-To: <4444171B.90507@cmu.edu> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Mon, 17 Apr 2006 18:30:51 -0400 George Nychis wrote: > > > Stephen Hemminger wrote: > > >On Mon, 17 Apr 2006 03:38:33 -0400 > >George Nychis wrote: > > > > > > > >>Hey, > >> > >>I'm using the 2.4.32 kernel with madwifi and iproute2 version > >>2-2.6.16-060323.tar.gz > >> > >>I wanted to insert artificial packet loss based on a percent so i found: > >>network emulab qdisc could do it, so i compiled support into the kernel > >>and tried: > >>tc qdisc change dev eth0 root netem loss .1% ^^^^^^ You need to do add not change. Add will set the queue discipline to netem (default is pfifo_fast). Change is for changing netem parameters after it is loaded.