This object identifies the class-ID of a class at the
first (highest) level of a hierarchical policy. A value
of 0 indicates class default. For a non-hierarchical
policy, the value of this object is always 0.
This object is deprecated for the same reason as
mentioned in cportQosClassEgressStatsTable.
There is no mapping for this object. All classes must be
referred by class name object cbQosCMName of
cbQosCMCfgEntry in CISCO-CLASS-BASED-QOS-MIB.