This is an implementation of the Hedera controller supporting Global First Fit from https://bnrg.cs.berkeley.edu/~randy/Courses/CS294.S13/7.3.pdf.

It is built on top of Brandon Heller's Ripl library and POX controller with minor changes to both to support version consistency and Hedera functionality.

Use a CS 244 Mininet VM to run the code (either from the class website or an Amazon EC2 instance).

1. Switch to the CS 244 version of Mininet

   $ cd ~/mininet

   $ git checkout -b cs244 origin/class/cs244

2. Fix the module dependencies for this version

   $ vim ~/mininet/mininet/moduledeps.py

   (^change this line: "-OVS_KMOD = 'openvswitch_mod'" to: "OVS_KMOD = 'openvswitch'")

3. Install the correct version

   $ cd ~/mininet

   $ sudo make install

4. Switch to the 'dart' branch of POX

   $ cd ~/pox

   $ git checkout dart

   $ git pull origin dart

5. Clone our project repo

   $ cd ~

   $ git clone https://github.com/iwalsh/244proj.git

   cd 244proj/

   $ sudo python setup.py install

6. Run it!

   $ cd ~/244proj

   $ sudo ./run.sh

7. Plot the results

   $ cd ~/244proj

   $ python plot_results myAwesomePlot.png

BONUS:

If you don't want to run the full measurement suite, you can run one measurement at a time, like so:

$ cd ~/244proj

Terminal #1 - start the remote controller using ECMP flow scheduling

$ ~/pox/pox.py controllers.riplpox --topo=ft,4 --routing=hashed --mode=reactive

Terminal #2 - run our measurement script on a sample traffic pattern

$ sudo python hedera.py ecmp traffic/stride2.json

Alternate Terminal #1 - start the Hedera controller using Global First-Fit flow scheduling

~/pox/pox.py controllers.hederaController --topo=ft,4