User guide

Appendix B - Power Supply MIB 93
© 2012 Datacom Systems Inc
4.4.1 The dcomPowerSupplyStatusTable
This table contains object definitions providing essential statistics for power supplies associated
with the managed system.
An entry exists in this table for each power supply associated with the managed system.
A unique value for the dcomPowerSupplyIndex object identifies each power supply.
The value of the dcomPowerSupplyStatus object indicates the current state of a power supply.
A value of 'stateDown(2)' indicates the power suppply is not operating or is not plugged in. A
value of 'stateUp(3)' indicates the power supply is operating as intended.
A dcomPowerSupplyStatus value of 'stateUnknown(1)' indicates the current state of the power
supply is unknown. This value is defined for architectural purposes and is unlikely to be
observed in deployed systems.
The value of the dcomPowerSupplyLastChange object provides a TimeStamp indication of
when a power supply entered its current state. The special value of zero(0) indicates a power
supply was already in its current state when the SNMP agent last re-initialized.
4.4.2 Event Notifications
This MIB module defines two event notifications for reporting state transitions associated with
power supplies. These notifications are discussed in the following sections.
4.4.2.1 dcomPowerSupplyEventUp
A dcomPowerSupplyEventUp event notification provides an indication that a power supply has
transitioned into the 'up' state.
The power supply involved in this event is identified by the dcomPowerSupplyIndex value
appended to the object name of the dcomPowerSupplyStatus variable binding.
4.4.2.2 dcomPowerSupplyEventDown
A dcomPowerSupplyEventUp event notification provides an indication that a power supply has
transitioned into the 'down' state.
The power supply involved in this event is identified by the dcomPowerSupplyIndex value
appended to the object name of the dcomPowerSupplyStatus variable binding.
4.5 Notes for Management Applications
- when the SNMP agent re-initializes, subsequent to receiving the coldStart event notification, a
management application will receive a dcomPowerSupplyEventDown event notification for any