Table 5 : Interactions Between Different Operational Modes of Routing Node 

In the first row of Table 5 , if the static status of a VLR is whitelisted, the dynamic status of the VLR (or other foreign mobility management node) is don’t care or DC. The terms “completeor partial”in column 1 of Table 5 refer to a complete or partial match on the VLR identity extracted from a received signaling message. In the first row, the overall node status is whitelisted. In all of the modes of operation, a received message from the particular VLR is treated as a validation success. In learn and test modes, a dynamic entry for the VLR is created. In active and off modes, dynamic entries are not created. 

In the second row of Table 5, if the static status of a network node is blacklisted, the dynamic status is don’t care. The overall status of the node is blacklisted. In all of the modes of operation, the receipt of a message from a network node whose static status is blacklisted is treated as a validation failure. Dynamic entries are not created in any of the operational modes. 

In the third row of Table 5 , if the static status of a network node is graylisted, the dynamic status is don’t care, and the overall status is graylisted. In all of the modes of operation, validation testing is performed. In the learn and test modes, dynamic entries are created. In the active and off modes, dynamic entries are not created. 

