[ns] Why ns-2??

[Nima Nafisi]

A few elements of answer:

 * Opnet is not free. You have to get a license, which has to renewed 
after a while. Why pay, when ns-2 is making the job.
 *  You have a big community of users, who can give you feedback, as 
other free software projects.
 *  There are many additional contributed code
 * NS-2 provides emulation functionalities
 * NS-2 can be used for  parallel  and  distributed  simulation: PDNS
 *  The contributed modules you produce can be reused by other people 
without the need for them to pay a license.
 *  It is matter of taste. I personnaly prefer free open-source softwares.

Nima.
   
 


Asim wrote:

>I've been working on ns-2 for the past 4-5 months but whenever i give
>a presentation, the first question asked is why are you using ns-2 and
>not any other network simulator like OPNET? and most of the time i
>dont have any good answer so can anyone please tell me why is ns-2 the
>best option to be used.
>Thanks
>
>Asim
>
>
>  
>