An ctEntStateOperDisabled notification signifies that the SNMP entity, acting in an agent role, has detected that the ctEntStateOper object for one of its entities has transitioned into the 'disabled' state. The entity this notification refers can be identified by extracting the entPhysicalIndex from one of the variable bindings. The ctEntStateAdmin and ctEntStateAlarm varbinds may be examined to find out additional information on the administrative state at the time of the operation state change as well to find out whether there were any known alarms against the entity at that time that may have affect on the physical entity's ability to stay operationally enabled.