Emerson MONITORING OpenComms Manuel D’Utilisation

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.

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.