This object reports the value of sysUpTime at the most recent point when jnxRsvpSessionMplsOctets or jnxRsvpSessionMplsPackets experienced a discontinuity, or zero if none has occurred since the management subsystem last reinitialized. Admins check it before trusting a delta calculated from those counters, since a discontinuity means the counter reset rather than genuinely stayed flat. For example, a nonzero discontinuity time that postdates the last polling interval tells a monitoring script to discard that interval's traffic-rate calculation.