Installation of VM used in A0M32PST

• ./controller file.py [docker] - start Ryu controller with file.py (hub.py is used if file is omitted). docker parameter can be used to run Ryu in Docker.
• ./mininet.sh - run mininet with single topology and 5 hosts, enable OpenFlow 1.3, connect to controller at 127.0.0.1:6333 and return mininet console

Additional topics

You can establish GRE tunnels between multiple Open VSwitches and create L2/L3 overlay networkd.

ovs-vsctl add-port br0 gre0 -- set interface gre0 type=gre options:remote_ip=second_endpoint_ip

More information can be found at http://blog.scottlowe.org/2013/05/07/using-gre-tunnels-with-open-vswitch/