Table which describes attributes associated to a particular VPI. Anytime you add to, delete from or modify any entry in this table, you must reboot the card in order for these changes to take effect. The reason for this is that the APC must be re-programmed and the only way to do this is by doing a reboot. In addition, you will not be allowed to modify, create or delete any atm-vcl entry which is on the same card as the VPI until after the card has been rebooted.