Prerequisites: ryu, mininet, and behave
For the best results download the Virtual Machine Image with Ryu and Mininet following the steps here https://github.com/osrg/ryu/wiki/OpenFlow_Tutorial
For using BeA through ONOS, you can install ONOS from https://onosproject.org/software/
Once the virtual machine is ready and running it is time to install the Behave function To do so run the command "pip install behave" If you have any issues the guide can be found here http://pythonhosted.org/behave/install.html
Once you have all of this downloaded and running it is time to install our code. This picture shows how the file structure should be set up
Once this is done, you are ready to run the code
First we need to launch mininet to do so we run to prompt "sudo mn --mac --controller remote --switch ovsk" This will run an instance of mininet with a basic topology and no running controller
If you have a custom topology you can run the command as shown in the picture, I have included our own as an example
(note: your custom topology files will need to be located in the mininet/custom folder)
Then open up a second terminal window and navigate to either "behave/simple_switch" or "behave/rest_firewall"
Once you are in the folder containing the "steps" folder and a ".feature" file run the command "behave"
(ex: simple_switch)
As you can see now, when you run a pingall test on the mininet network there is now a connection and all packets have been recieved
To run a simple example of Service Function Chaining (SFC) through ONOS platform (assuming ONOS is installed on the vm), start ONOS locally. Open a tab of the Terminal and enter ONOS directory:
ubuntu@sdnhubvm:~$ cd onos
ubuntu@sdnhubvm:~/onos$ tools/build/onos-buck run onos-local -- clean debug
After ONOS is successfully started, open another tab and connect to the ONOS command line interface (CLI):
ubuntu@sdnhubvm:~$ onos localhost
From the CLI, start the SFC application as follow:
onos> app activate org.onos.unibo
Once application is active, start Mininet topology as described above, and from the Terminal of behave directory, navigate one of the 3 examples: simple_sfc simple_sfc2 simple_sfc3 . Depending on which directory you decide to enter, enter “behave” command so that proper scenario is started. For example, to start the simple_sfc scenario, enter corresponding folder and run the following command:
behave --no-capture sfc01_natural_language.feature
The same apply for the other two examples, by changing the name of the feature file accordingly.
To exit out of the behave file simply enter "ctrl+c" and for mininet enter ">exit"
Extra note: Please remember to put "export BDNM_ROOT=~/bdnm" or in the .bashrc and source it.