Software Defined Networks (SDN) has disseminated the decoupling
between the control plane and the data plane in network technologies. Although
promising, this logical separation added complexity in the initial configuration
of routing rules. In this context, this article aims to investigate two configuration
policies for routing rules on SDN: reactive and proactive. The reactive
approach seeks to install the rule on the switch when a packet arrives, while
the proactive approach aims to install the rule on all switches involved in the
datapath. Experimental results using Floodlight as a controller quantified the
time required to configurate a new flow, indicating that the proactive approach
is superior in the analyzed scenarios.