This network is too good...

Thu Feb 2 21:50:09 UTC 2012

I know people who have been very happy with Apposite. They have a couple
different lines that can simulate a lot of different conditions.

http://www.apposite-tech.com

I know they call them WAN simulators but I know a company that strictly
uses them for layer2 to simulate congestion between switches, etc.

On Wed, Feb 1, 2012 at 7:05 PM, Thomas Maufer <tmaufer at gmail.com> wrote:

> IWL's "Maxwell" is probably what you want:
>
>
> http://www.iwl.com/press-releases/new-capabilities-for-maxwell-the-network-impairment-system.html
>
> Good luck breaking stuff!
>
>
>
>
>
> On Wednesday, February 1, 2012, Leo Bicknell <bicknell at ufp.org> wrote:
> > In a message written on Wed, Feb 01, 2012 at 08:51:13PM -0500, Robert E.
> Seastrom wrote:
> >> Any thoughts on products that screw up networks in deterministic (and
> >> realistic found-in-the-wild) ways?  I'm thinking of stuff like
> >> PacketStorm, Dummynet, etc.  Dial 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!")
> >
> > The only good L2 solutions I've ever seen are expensive commercial
> > testing.  DummyNet, on a L3 aware FreeBSD box is extremely useful and
> > easy to configure to simulate varous loss or latency patterns.
> >
> > What tool is right depends on if you want to test at L2 (simulate a
> > circuit/cable with a particular problem) or L3 (just a router in the
> > middle dropping packets), or testing an end user application.  L2,
> > particularly if you want to simulate things like a duplex mismatch is
> > hard, and not often needed.
> >
> > If your goal is to test applications against network conditions, OSX has
> > a nifty new tool, "Network Link Conditioner".  It's basically just
> > dummynet with various throughput, delay, and packet loss settings but it
> > makes it dead simple to select from various pull downs.
> >
> >
>
> http://www.thegeeksclub.com/simulate-internet-connectivity-speed-mac-os-lion-107-network-link-conditioner
> >
> > I bring it up mainly because if you want to set your own DummyNet
> > settings for other testing it's a nice database of average case
> > performance for a number of link types!
> >
> > --
> >       Leo Bicknell - bicknell at ufp.org - CCIE 3440
> >        PGP keys at http://www.ufp.org/~bicknell/
> >
>
> --
>
> ~tom
>
> +1 408 890-7548 (Google Voice)
>