Zahra - OpenDaylight is in my opinion the most comprehensive tool:

https://www.opendaylight.org/in-the-news/2017/07/17/virtualization-review-new-opendaylight-sdn-controller-boosts-iot-support

you can use the Cooja/Contiki simulator ..

http://www.contiki-os.org/start.html

As patform, you can also use FIT/IoT Lab:

https://www.iot-lab.info

You can also try NetSim from http://www.tetcos.com. 

It is pretty easy and simple to use IOT library.

Thanks, how about mininet-wifi?

I think mininet only for SDN i am not sure because i also have this problem

All of introduced simulators are complex

net sim does not support SDN

Mehdi,

Yes, mininet is for SDN. However, I'm talking about mininet-wifi which is a little different from mininet in terms of supporting WiFi networks. It's a fork of mininet which allows the using of both WiFi stations and access points.

Hola Zahra, Which simulator did you use for SDN IoT integration?

Hi Liz,

Mininet-wifi and SDN-WISE can be good choices for SDN IoT integration.

Hi Zahra,

What do you suggest for IoT-SDN integration in smart city environment

What do you mean about this?

" Mininet-wifi and SDN-WISE can be good choices for SDN IoT integration "

You have not tried these simulators or you only heard that they are good?

Mehdi, I have tried both of them.

Take a look at this link: http://sdn-wise.dieei.unict.it/docs/guides/GetStartedONOS.html - It uses Cooja/Contiki simulator and ONOS controller for controlling a heterogeneous network.

I'm using Mininet-wifi at this time which is intended to emulate wireless OpenFlow/SDN scenarios and according to it's developer, it will be extended to IoT in a near future. however, it already supports 6lowpan.

So This is you who should decide which one to use based on the complexity of your work, the controller you want to use and ...

Hola Zahara no tuviste problemas al ejecutar este escenario? : http://sdn-wise.dieei.unict.it/docs/guides/GetStartedONOS.html

It is better to use opendaylight since it is more latest in 2013 and almost has all things positively and it also support IOT.sorry I want to say controller.

The latest version of NetSim (https://tetcos.com/new-releases.html) seems to have SDN support for IOT / WSN

omnet++

there is an ongoing fork of Mininet-WiFi for IoT (with or without SDN): https://github.com/ramonfontes/mininet-iot as well as simple examples to start learning how to emulate some IoT scenarios: https://github.com/intrig-unicamp/mininet-wifi/blob/master/examples/iot.py

Mininet

Mininet with pox controller, Pyretic and Frenetic controller can also be used for flexible traffic engineering.

If you wish to operate live network then OpenDaylight is good option.