View and Interpret Presence Sensor Type Values

Before You Begin

• The IPMItool supports the output of a States Asserted field for each presence sensor type record. This States Asserted field can appear in the IPMItool output as either:

  • States Asserted = Entity Presence

    When the States Asserted = Entity Presence field appears, the sensor output for a hardware component can show one of three valid values: Present(=1), Absent(=2), Disabled(=4).

  • States Asserted = Availability State

    When the States Asserted = Availability State field appears, the sensor output for a hardware component can show one of two valid values: Device Absent(=1) and Device Present(=2).

    Note:

    Oracle ILOM supports the output of both States Asserted fields. However, some Oracle hardware platforms might support both or one of the possible States Asserted fields (Entity Presence or Availability State).

  For additional information about how to interpret values presented for IPMI presence sensor types, refer to Section 42 - Sensor and Event Code Tables in the IPMI 2.0 Specifications. Understanding all of Section 42 is critical in understanding how to interpret a sensor value.

To view and interpret IPMItool present sensor type values, follow these steps:

1. To view the actual sensor reading for hardware components, use the IPMItool sdr list command.

   For example, after issuing the sdr list command the following presence sensor type readings appear for PCIe hardware components.

   PCIE_CC/PRSNT    | 0x02              | ok
   PCIE0/F20/PRSNT  | 0x01              | ok
   

2. To determine the States Asserted field value for a presence sensor type, use the IPMItool sensor get command.

   One of the following States Asserted fields appear after issuing the sensor get command from the IPMItool:

   • States Asserted = Entity Presence

     In the following example, the value shown for the States Asserted = Entity Presence field is Absent.

     $ ipmitool sensor get  PCIE_CC/PRSNT
     Locating sensor record...
     Sensor ID              : PCIE_CC/PRSNT (0xad)
     Entity ID             : 49.0
     Sensor Type (Discrete): Entity Presence
     States Asserted       : Entity Presence
     [Absent]
     

   • States Asserted = Availability State

     In the following example, the value shown for the States Asserted = Availability State field is Device Absent.

     $ ipmitool sensor get PCIE1/PRSNT
     Locating sensor record...
     Sensor ID              : PCIE1/PRSNT (0xe6)
     Entity ID             : 11.0
     Sensor Type (Discrete): Entity Presence
     States Asserted       : Availability State
     [Device Absent]