The minimum delay between the transmission of two consecutive
NCDP configuration PDUs on an interface.
The value of this object should normally be set to match the
value of cwnMessageInterval. If the value of this object
is higher than the value of cwnMessageInterval, NCDP
configuration PDUs will end up being propagated at the
rate specified by the value of this object instead.
This object is only used if the distribution method is 'ncdp'.