The value of the object tIPvXFltrEntryActActionId specifies a unique identifier of an action within the filter entry. Per one filter entry up to two actions can be configured (the primary and the secondary). Destination availability checking is turned on when both actions (the primary and the secondary) are configured for an entry. This is allowed only for the following combinations of actions: - both actions are PBF to SAP - both actions are PBF to SDP - the primary action is PBF to SAP and the secondary action is forward SDP or vice versa - both actions are PBR to next-hop router If the PBR/PBF destination of the primary action is available, then the primary action will be taken on a packet matching the filter entry. If the PBR/PBF destination of the primary action is not available and the PBR/PBF destination of the secondary action is available then the secondary action will be taken on a packet matching the filter entry. If none of the actions for the entry has an available PBR/PBF destination then the action specified by the object tIPFilterParamsExtPbrDwnActOvr(for IPv4 filters) or tIPv6FilterParamsExtPbrDwnActOvr(for IPv6 filters) will be taken on a packet matching the filter entry. There is a limit to the number of entries with the destination availability checking turned on.