This object contains an appropriate value to be used for
nmsifthTemplateIndex when creating entries in the
nmsifthTemplateTable. The distinguished value 0 indicates that
no unassigned entries are available.
To obtain a suggested nmsifthTemplateIndex value for a new entry,
the manager issues a management protocol retrieval operation to
obtain the current value of this object. The manager may
ignore this object and use alternative mechanisms for choosing
an unused value of nmsifthTemplateIndex for a new entry.
The agent will modify the value to the next unassigned index,
when a new entry is created in nmsifthTemplateTable with the
current value of this object. After deletion of an entry in
nmsifthTemplateTable the agent will determine through its local
policy when its index value will be made available for reuse.