This object indicates whether the association between a VPLS instance and a pseudo wire was created manually(1) or via autodiscovery(2), and this value must be set at row creation and cannot change while the row is active. Admins check this to distinguish operator-provisioned pseudo wire bindings from those the system discovered and bound automatically. For example, a binding showing autodiscovery(2) indicates the pseudo wire association was formed by the signaling protocol rather than by explicit operator configuration.