Marc, OPNET supports the different flavors of TCP, and it provides some LEO
models as user contributed models.  I have never used the LEO models, so I
can't comment on their usefulness.
Bill Shvodian 
> -----Original Message-----
> From:	Marc Emmelmann [SMTP:[email protected]]
> Sent:	Tuesday, February 22, 2000 10:50 AM
> To:	'[email protected]'
> Subject:	Network Simulation Tools
> 
> Hello,
> 
> I need to run some experiments / simulations with TCP/IP in a LEO
> Satellite environment. My special interest is on how the different TCP
> flavors behave in the context of time-varying round trip delays.
> 
> I am planing to use the NS Network Simulator (ns2) for my trials and
> would like to ask if any of you has a suggestion about other simulator I
> should considder or (even better) has a pointer to previous work by some
> one else.
> 
> Thanks for your reply,
> 
> Marc
> 
> --
> German National Research            Research Center for
> Center for Information Technology   Open Communication Systems
> 
> Marc Emmelmann                      Phone:  +49-30-34 63 - 7265
> GMD-FOKUS                           Fax:    +49-30-34 63 - 8265
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> 
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