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, the threshold level of the KPI including a threshold measure of occupancy of one or more queues associated with the one or more nodes; receiving, by the server device, information regarding measured values of the KPI, the measured values being associated with a segment of the network, the segment including at least two nodes of the network; comparing, by the server device, the specification information to the information regarding the measured values of the KPI, the comparing including: comparing measured values, of a measure of occupancy of the one or more queues associated with at least two nodes of the network, to the threshold measure of occupancy specified by the specification information; determining, by the server device and based on the comparing, that the threshold level of the KPI is not met, the determining including: determining that the measured values, of the measure of occupancy of the at least two nodes, exceeds the threshold measure of occupancy; and modifying, by the server device and based on the determining, a configuration of at least a particular node, of the one or more nodes of the network.