This text field describes the specific stage within the current FSM task that is executing against the port-discovery object that runs the neighbor-discovery process for a fabric-interconnect port. An administrator tracking a long-running discovery process on this PortDiscover instance uses fsmStageDescr to see which sub-step (rather than just which overall task) is presently underway. For example, fsmStageDescr progressing through a series of named stages over successive polls confirms to the operator that the workflow on this PortDiscover instance is actively moving forward.