An entry in the caviTable table for each ATM virtual interface.
An entry in this table can only be created if values for all
objects in a row are provided.
The caviVpiNum object is applicable only to interfaces of
caviIfType vnni (3) or vuni (4).
The caviMinVpiNum and caviMaxVpiNum are applicable only to
interfaces of caviIfType evuni(5) or evnni(6).