Neutron/OFAgent/ComparisonWithOVS

Two neutron agents, openvswitch and ofagent, implement mostly same functionalities in different ways.


 * What's same?
 * Basic architecture
 * the agent runs on each compute/network node.
 * it controls an OpenFlow switich on the node.


 * What's different?
 * The following is a summary of the differences.
 * note: this list is intended to show differences wrt designs and development directions. some of items (noted as "planned") have not been implemented  in neutron master yet.