Emerson MONITORING OpenComms Manuel D’Utilisation

UPS units log alarms in the RFC 1628 UPS MIB. Traps for the UPS 

units are generated out of the RFC 1628 UPS MIB. There are four 

traps that may be sent for the UPS units: Trap On Battery, Trap Test 

Completed, Trap Alarm Entry Added and Trap Alarm Entry Removed.
The trap On Battery is sent when the UPS is operating on battery 

power. This trap will be sent once a minute until the UPS either shuts 

down or is no longer running on battery power. This trap provides the 

Estimated Minutes Remaining on Battery, the Seconds on Battery 

and the Configured Low Battery Time. The Trap Test Completed is 

sent when a UPS diagnostic test is completed. This trap provides the 

Test ID of the test that has been performed, the Test Spin Lock, the 

Test Results Summary, the Test Results Detail, the Test Start Time 

and the Test Elapsed Time. The Trap Alarm Entry Added is sent 

when an alarm is placed into the alarm table and provides the alarm 

ID and the alarm description. This trap is not sent on the following 

alarms: On Battery and Test In Progress. The Trap Alarm entry 

Removed is sent when an alarm is removed from the alarm table and 

provides the alarm ID and the alarm description. This trap is not sent 

out when the Test In Progress alarm is removed from the alarm table.

Below is the definition on how events are handled in RFC1628.
* Two similar event traps (notifications) are sent to their destination 

or NMS system. The event traps are differentiated by their trap type. 

Type 3 = Condition ADDED to the event table, Type 4 = Condition 

REMOVED from the event table.
*Each event trap contains the following three bindings of information:
1. Trap ID. The ID represents the location or placeholder in the table 

to find event information.

2. The OID reference of the well-known alarm. Note: Below are the 

OID references for RFC1628 alarms. These are not Liebert-unit 

specific, but rather RFC1628 specific.

3. Time ticks or system uptime that represents when an event 

occurred.