The value of the next available QoS Rule index. This
object is used by an NMS to select an index value
for row-creation in the extremeQosRuleTable. The
current value of this object is changed to a new
value when the current value is written to an agent's
table. Row creation using the current value of this object
allocates a extremeQosRuleIndex. Note the following:
1. A newly created row does not have to be active(1)
for the agent to allocate the extremeQosRuleIndex.
2. Race conditions between multiple NMS's end when
a row is created. Rows are deemed created when
a setRequest is successfully committed (i.e.
the errorStats is noError(0)).
3. An agent that exhausts its supply of extremeQosRuleIndex
values returns zero as the value of this
object. This can be used by an NMS as an indication
to deleted unused rows and reboot the device.