10.3. How and When SNMP Traps are Sent:
1. When the buffer port first reaches the trap level, SNMP
Traps are immediately sent to each manager defined.
SNMP uses the UDP protocol (an "unreliable" protocol).
Successful manager receipt of traps are assisted by the
a) The CMS verifies that the ARP table is updated
completely before sending a trap to each manager
b) The user may choose to use the 2nd manager as a
"backup" in the event that the 1st manager fails to
receive the SNMP trap sent by the CMS to the 1st
2. When an SNMP trap is sent to a manager for a particular
port, the CMS also sets a one hour timer for that port:
a) If, during the hour, the buffer NEVER DROPS BELOW
the trap level, then SNMP Traps are re-sent and the one
hour timer is reset.
b) If, during the hour, the buffer DOES DROP BELOW
the trap level at any time, the timer is immediately
cleared. No more traps will be sent unless the buffer
level once again climbs higher again the trap trigger