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Subject: Re: Routing protocol simulator ? 
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From: bmah@cs.berkeley.edu (Bruce A. Mah)
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Date: Thu, 18 Jul 1996 10:48:54 -0700
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Richard Lyon writes:

> Hey, if you find a good discrete event simulator for FreeBSD let me know. 
> I have been doing a lot of simulation work for mobile data networks. I 
> have tried a number of different tools but always come back to OPNET.

Apologies if this is getting off-topic...

For some work I'm doing to investigate the performance of different 
IP-over-ATM schemes, I've developed what I think is a pretty reasonable 
IP network simulator:  The Internet Simulated ATM Networking 
Environment (a.k.a. INSANE).  It's a discrete event simulator done in 
C++ and Tcl, it simulates the actions of various applications 
(telnet/ftp/http/audio/video) over TCP/UDP/IP and various primitive 
data-link layers (one of which is an approximation of an ATM stack).  
Works great under FreeBSD, as well as a number of other UNIX and 
UNIX-like OSs I've tried.

Eventually I would like to release this on a freely available basis.  
For right now, I'm deep in thesis-writing mode, and so the release sits 
on the back burner.  But if anyone is interested in a snapshot of the 
code with the usual disclaimers and caveats, send me email.

The downside (for the purposes of the original question) is that it 
doesn't deal with routing protocols at all (all routing is static).  
But it might not be too hard to add it...

Cheers,

Bruce.