The value of vRtrRsvpGenRapidRetryLimit specifies the rapid retry
limit. This is used in the retransmission mechanism based on an
exponential backoff timer in order to handle unacknowledged message
objects. The node stops retransmission of unacknowledged RSVP
messages whenever the updated backoff interval exceeds the value of
vRtrRsvpGeneralRefreshTime or the number of retransmissions reaches
the value of the vRtrRsvpGenRapidRetryLimit, whichever comes first.