The real DESCRIPTION field here is just the auto-generated stub "Cisco UCS fabric:FcoeSanEp:fltAggr managed object property", so it carries no real prose -- but the property name and its Unsigned64 type tell you what it holds: It holds an aggregated 64-bit fault code that rolls up every fault currently raised against this FCoE SAN uplink port into one bitmask. Rather than a human-readable message, this is meant for correlation: a monitoring system can compare this number against the Cisco UCS fault catalog to see, in one field, whether this specific FCoE SAN uplink port has any open faults at all before drilling into the Faults tab for the details. A value of 0 means this FCoE SAN uplink port has no outstanding faults; a nonzero value like 4398046511104 encodes one or more specific fault codes bit-packed together.