Indicates whether the port is a member or a forbidden member in the forwarding information for this VLAN. 'addTagged' - to add the port in the tagged portlist. 'addUntagged' - to add the port in the untagged portlist. 'addForbidden' - to add the port in the forbidden portlist. 'delTagged' - to delete the port from the tagged portlist. 'delUntagged' - to delete the port from the untagged portlist. 'delForbidden' - to delete the port from the forbidden portlist.