Re: [p2p-hackers] Software Network Simulator

Thu, 28 Jun 2007 20:31:14 -0700

ns2 is a full simulation environment. It sounds almost like David wants something more like Dummynet (FreeBSD) or NISTNet (Linux) or Modelnet (Linux?) or one of the other variants that lets you do traffic shaping/emulation. It takes some work to get them to work with virtual interfaces, and even more work to get them to work with virtual routing tables, but it can be done. The Emulab folks have done this with Dummynet on FreeBSD machines putting each node in a jail; I think others have done it by using virtual machines for the per-process encapsulation. 

  -Dave

On Jun 28, 2007, at 11:03 PM, Priyanka Sinha wrote:
ns2 ? ... there are quite a few more as well... (like j-sim.. opnet is a pretty well known commercial one) .. If you'd like an emulator,. i think ns2 also allows you to emulate ( as in then the simulated traffic uses your network drivers i suppose .. havent tried it) 

Priyanka
On 6/28/07, David Barrett <[EMAIL PROTECTED]> wrote:
Does anybody know of a software network simulator that works on a single computer (ie, isn't a separate device that you plug into)? I'm thinking the ideal thing would create two virtual network interfaces that in practice work like localhost, except with configurable latency and packet loss characteristics. 


Any tips?


-david






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