This object specifies a relative percentage of unreachable hosts. The relative unreachable host percentage is based on a comparison of short-term and long-term measurements. The short-term measurement reflects the percentage of hosts that are unreachable within a 5-minute period. The long-term measurement reflects the percentage of unreachable hosts within a 60-minute period. The following formula is used to calculate this value: Relative percentage of unreachable hosts equals to the difference between short-term percentage and long-term percentage divided by long-term percentage. The master controller measures the difference between these two values as a percentage. If the percentage exceeds the user-defined or default value, the exit link is determined to be out-of-policy. The value of this object is valid if the corresponding value of cpfrMapUnreachableType is set to 'relative'.