Description: The Access control list item number for an entry. This is a unique number that identifies different Access list entries combined with the Access list name and Access list number. This one has to be unique even though the name and number are not unique for a given Access list with same or different source address, subnet mask, destination address and destination mask, protocol type, action (permit/deny) type and the operator (neq, eq, gt and, lt) which makes the index a unique tuple (name, number, itemnumber).