1  –  FACTOR

 Specifies the number by which to multiply one sixteenth of the
 estimated round trip delay to a node to set the retransmission
 timer to that node.  Use a number in the range 16 to 255.  The
 default value is 80.

2  –  WEIGHT

 Specifies the weight to apply to a new round trip delay data
 point when updating the estimated round trip delay to a node.
 Use a number in the range of 1 to 255.  The default value is 5.