The value of tIngClassPlcyDefActionFC specifies the forwarding class or the sub forwarding class to be used for this ingress classification policy. Specification of a sub forwarding class is also allowed. The format of a sub forwarding class is the concatenation of the base forwarding class and a sub class identifier in the form base-fc-name[.sub-fc-name] To reference a sub forwarding class, the mapping of the sub forwarding class should be existing in this QoS policy. Unless tIngClassPlcyDefActionFC is specified explicitly, this match will be ignored for classification purposes.