A mechanism associated with a network management system (NMS) interprets and predicts the impact on a network of a network configuration change proactively. By providing pre-configuration analysis in this manner, a network administrator can determine the potential effect of the proposed configuration change in advance of actually inserting a configuration command in the network that might otherwise have unforeseen and damaging consequences. The technique is implemented using a predictive analytics engine that receives a proposed network command and, using a current network topology, executes the command against one or more NMS algorithms to verify that the command can be implemented safely.