From what I can tell there is no build in sensor for Nexus 5548 switches. I am trying to add a sensor to monitor if one of the power supplies fails. I managed to download a copy of the CISCO-ENTITY-FRU-CONTROL-MIB version 1 from Cisco's site. I imported it into the Paessler MIB Importer tool and export out a .oidlib file that I copied to the "C:\Program Files (x86)\PRTG Network Monitor\snmplibs" directory.
I then tried adding SNMP Library sensors to the device and found it came with a fair amount of granular sensors that I could select from in the web interface. I selected a number of them that might be related to monitoring the power supply status but I was confused as to which sensor I would require and if additional configuration to the sensor would be required once it was added.
All the sensors I have added so far show green but currently one of the two power supplies are not functional so I should be getting some kind of error. Not familiar with managing mibs or pulling info from induvial OIDs so any help would be apricated.