The value of vRtrRsvpGenRapidRetransmitTime specifies the value
of the rapid retransmission interval. This is used in the
retransmission mechanism based on an exponential backoff timer
in order to handle unacknowledged message objects.
vRtrRsvpGenRapidRetransmitTime must be smaller than the regular
refresh interval vRtrRsvpGeneralRefreshTime.