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In-Reply-To: <86d39yknou.fsf@seastrom.com> Date: Fri, 3 Feb 2012 14:01:54 -0800 From: Matthew Petach <mpetach@netflight.com> To: "Robert E. Seastrom" <rs@seastrom.com> Cc: nanog@nanog.org Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org On Wed, Feb 1, 2012 at 5:51 PM, Robert E. Seastrom <rs@seastrom.com> wrote: > > Hi all, > > Any thoughts on products that screw up networks in deterministic (and > realistic found-in-the-wild) ways? =A0I'm thinking of stuff like > PacketStorm, Dummynet, etc. =A0Dial up jitter, latency, tail drop, RED, > whatever... > > (I know someone's gonna say "Just buy a Brand Z FubarSwitch 3k, they > will screw up your whole network and you don't even have to configure > it to do so!") > > I'm all-ears like Ross Perot. > > Thanks, > > -r Definite +1 for dummynet on freebsd; I've used in the lab at layer 2 in bridge mode, and layer 3 both, for doing testing. latency introduction is good down to a few ms, but isn't accurate below that--but for most of what we do, in terms of simulating latency and loss/jitter, it works like a charm. Matt
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