The value of tAtmIntfCurrentMaxVpcs indicates
the maximum number of VPCs that may be currently
configured on this ATM interface.
The value is the minimum of atmInterfaceMaxVpcs,
and the atmInterfaceMaxVpcs of the interface's
UNI/NNI peer as negotiated by ILMI.
If the interface does not negotiate with its peer
to determine the number of VPCs that can be
configured on the interface, then the value of
this object must equal atmInterfaceMaxVpcs.