An entry in the table containing PPPoE session
related information on a VCL. The entry of this
table is created when the value of cPppoeVcEnable
object is set to `true` for the entry associated
VCL. The entry of this table is deleted when the
of cPppoeVcEnable object set to `false` or the
the entry associated VCL is deleted from
atmVclTable.