This table contains all the Fibre Channel Address Identifiers that have recently been released by the Fabric Address Manager in a switch. So, it lists all the Fibre Channel Address Identifiers that have valid WWN-to-Fibre Channel Address Identifier mappings and are currently not assigned to any ports. These Fibre Channel Address Identifiers were assigned to ports but have since been released. These cached Fibre Channel Address Identifiers contain only Area_ID and Port_ID information. This cache is kept to provide best-effort re-assignment of same Fibre Channel Address Identifiers; i.e., when an Nx_Port asks for a Fibre Channel Address Identifier, soon after releasing one, the same value is re-assigned, if possible.