The question:
What is the best way to model quota through ovs? Right now the best thing we could come up with is to periodically poll a flow stat and install a drop flow when the flow stat goes past the quota.
The answer given (which provides some food for thought on better mechanisms):
Open vSwitch includes sFlow / NetFlow instrumentation. Using flow data to drive your quota controller reduces the complexity of the OpenFlow rules since you no longer need granular rules to provide the traffic measurements.
The following article describes building a quota controller using sFlow:
