From: Andrew Lee Lissitz (alissitz@corvil.com)
Date: Tue Apr 05 2005 - 11:04:43 GMT-3
Hey All,
If you place a server between the traffic generator, and traffic recipient
then you can do a lot of cool things like drops, latency, jitter, corrupted
payloads (but good CRC values, bad packets etc...
Here is a Linux version (free): http://www-x.antd.nist.gov/nistnet/ --> this
does most of what is mentioned above
Here is a windows (a bit expensive - I think 10K) version with a lot of
awesome features: http://www.shunra.com/ --> this price is nothing if you
are trying to setup a test lab for your company...
When I used to do a lot of testing, we would setup something like this:
PC - TestServer - Switch / Router ---Simulated WAN Link--- Router - PC
-OR-
PC - TestServer - PC
The test server is the device that would introduce all the chaos...Obviously
there are other combinations of devices that you can do... Good luck John!
Andrew
908-303-4762
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Jerry Hulbert
Sent: Tuesday, April 05, 2005 6:21 AM
To: Sheahan, John; ccielab@groupstudy.com
Subject: Re: Help with simulating latency across two routers
John,
Try a Spirent SX-12 or SX-13.
http://www.spirentcom.com/analysis/product_product.cfm?PL=4&PS=4&PR=202&D=10
Not sure what the price is, but you can simulate delay and path errors.
Jerry
----- Original Message -----
From: "Sheahan, John" <John.Sheahan@priceline.com>
To: <ccielab@groupstudy.com>
Sent: Monday, April 04, 2005 12:48 PM
Subject: Help with simulating latency across two routers
> I am trying to simulate 70ms latency between two or more routers in
> order to test an application that we think is having problems if the
> latency is that high.
>
>
>
> When I setup my lab with back to back serial cables and set the
> clockrate down low, I can achieve a 70ms latency when pinging. The
> problem with that is that application itself requires more bandwidth
> than the clockrate I am setting.
>
>
>
> I would like to be able to provide 1.5mb of bandwidth yet keep the
> response times of my pings down to 70 ms.
>
> Does anyone know an easy way to do this?
>
>
>
>
>
> Thanks.
>
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