Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

By default, the sampling rate of an interface is set to the same value as the current global default sampling rate. If the value entered is not a correct power of 2, the command generates an error message with the previous and next power-of-2 value. Select one of these two numbers and re-enter the command. (For more information on values in power-of-2, refer to Sub-Sampling.)

To change the sampling rate either globally or on an interface, use the following command.