Emerson MONITORING OpenComms - Manual (Page 20)

Operation
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4.0 O
PERATION
4.1 SNMP
The OpenComms Network Interface Card supports “get,” “getnext,”
“set,” “response” and “trap” packets of SNMP (Simple Network Man-
agement Protocol). The OpenComms NIC supports MIB-II, RFC1628
and Liebert Global Products MIBs. The terms “alarms” and “condi-
tions” will be used interchangeably through out this description.
Alarms are generated and maintained through the RFC 1628 UPS
MIB. Conditions are generated and maintained through the Liebert
Global Products MIB.
The RFC 1628 UPS MIB provides information for the supported UPS
devices. The Liebert Global Products MIB provides information for the
supported environmental devices. All conditions that are listed are
dependent upon what the unit itself supports. When a condition
occurs within the unit, it is logged into the condition table within the
appropriate MIB and a unique ID is assigned. A description of the con-
dition along with the value of the system up-time when the condition
was generated is placed into the table as well. A trap is then sent out
to the monitoring system.
4.2 Liebert Global Products MIB
Environmental units log conditions in the Liebert Global Products
MIB. Traps for the environmental units are generated out of the Lie-
bert Global Products MIB. Currently, there are only two traps that are
sent for environmental units through the MIB: Event Condition Entry
Added and Event Condition Entry Removed. The Event Condition
Entry Added is sent each time a condition is inserted into the condi-
tions table. This trap provides the condition ID, the condition descrip-
tion, and the condition time. The Event Condition Entry Removed is
sent each time a condition is removed from the conditions table. This
trap provides the condition ID, the condition description, and the con-
dition time.