This read-write Integer32, in milliseconds and ranging 75 to 60000, sets the minimum delay between transmission of two consecutive NCDP configuration PDUs on an interface, and per the description should normally match cwnMessageInterval, since a higher hold time value than the message interval causes Hello PDUs to actually propagate at the rate this object specifies instead. An admin generally leaves this equal to cwnMessageInterval to avoid unintentionally slowing down Hello propagation below the configured message interval. Setting this higher than cwnMessageInterval without realizing it would silently throttle how often Hello PDUs actually go out on that interface, even though cwnMessageInterval suggests a faster rate.