ns-2 vs. ns-3

[gammal]

Hi,

I'm just starting on a network simulation project and I have no
previous experience with neither ns-2 nor ns-3, but I would like to
know which one I should use. My scenario involves basic communication
in a wireless sensor network which might also include mobility. Is
ns-3 mature enough to handle this or should I better stick with ns-2?
Also, which of them is more likely to allow me to get up & running
faster (OTcl vs. Python is not an issue, and I'm already experienced
with C++)?

Thanks

-- Mahmoud

[francesco]

This is the suggestion I just gave to a student:

1. check whether the model(s) you need are available either in ns-3 or
in one of the experimental repositories (the ones listed at
http://code.nsnam.org/);
2. inquire (here ;) ) about their level of completeness, especially if
they are experimental;
3. decide whether you are ready to tweak someting, sooner or later.

If (1)-(3) hold, then you should definitively use ns-3, it's a great
tool to work with. Otherwise, unless developing a model is (or can
become) the focus of your work, ns-2 is likely to be a more
conservative choice. Nevertheless, do not underestimate its learning
curve.

[Nicola Baldo]

It also depends on how long you foresee that you will be working with
network simulators. The longer you will be using them, the more I
would recommend to choose ns3. While ns3 is being very actively
developed, the official ns2 development is minimal, and I guess the
ns2 community of developers and users will shrink over time. If you
are choosing your network simulator right now, I think that it would
not be not a wise choice to do a long-term commitment (say more than
one year) to ns2.

[Wilson Thong]

Agree.

And if you find there is anything missing in ns-3, you can develop it
and submit it for reviews (http://www.nsnam.org/contributing.html)

[Bernardo Augusto Garcia Loaiza]

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--
Bernardo Augusto García Loaiza
Ingeniero de Sistemas
Estudiante de Maestría en Ingeniería Informática - Universidad EAFIT