The value of tmnxStdReplayStart indicates the SNMP notification
request ID of the first event that cound not be generated because
there is no route to this notification target address.
Events will be resent when this notification target address is
readded to the route tables, on either an in-band or out-of-band
interface. The agent searches backwards in the event log and
begins resending events from the oldest event that has a timestamp
<= 5 hundredths of a second less than the timestamp of the
event with this request ID. Note that if the outage is long
and a large number of events are generated in the meantime,
it is possible that the log memory storage has wrapped and the
event data for this request ID is no longer available. In that case,
the oldest event saved in the log will be the first event resent.
A value of 0 indicates that there are no missed events waiting
to be resent.