1. A method, comprising: receiving, by a server device, specification information specifying a threshold level of a key performance indicator (“KPI”) for traffic that traverses one or more nodes of a network; receiving, by the server device, information regarding measured values of the KPI at the one or more nodes of the network; comparing, by the server device, the specification information to the information regarding the measured values of the KPI; determining, by the server device and based on the comparing, that the threshold level of the KPI is not met; modifying, by the server device and based on the determining, a configuration of at least a particular one of the one or more nodes.