BMC Sensor Data

SDR Sensor List

The following is a list of the available sensors maintained by the BMC including their type and name.

Sensor Name	Sensor Type	Source	Description
`p0_link`	Discrete	IPMB	Uplink port 0 link status 0x100 – connection OK 0x200 – connection error
`p1_link`	Discrete	IPMB	Uplink port 1 link status 0x100 – connection OK 0x200 – connection error
`bluefield_temp`	Temperature	IPMB	Bluefield DPU Temperature
`p0_temp`	Temperature	IPMB	Uplink port 0 SFP temperature
`p1_temp`	Temperature	IPMB	Uplink port 1 SFP temperature
`1V_BMC`	Voltage	BMC ADC
`1_2V_BMC`	Voltage	BMC ADC
`1_8V`	Voltage	BMC ADC
`1_8V_BMC`	Voltage	BMC ADC
`2_5V`	Voltage	BMC ADC
`3_3V`	Voltage	BMC ADC
`3_3V_RGM`	Voltage	BMC ADC
`5V`	Voltage	BMC ADC
`12V_ATX`	Voltage	BMC ADC	Input power rail from ATX (power from gold fingers in case of Sub75 when ATX power is off)
`12V_PCIe`	Voltage	BMC ADC	Input power rail from gold fingers
`DVDD`	Voltage	BMC ADC
`HVDD`	Voltage	BMC ADC
`VDD`	Voltage	BMC ADC
`VDDQ`	Voltage	BMC ADC
`VDD_CPU_L`	Voltage	BMC ADC
`VDD_CPU_R`	Voltage	BMC ADC

Sensor Redfish Commands

Get List of Support Sensors

BlueField sensors are stored within the Sensors schema under the Chassis schema. To retrieve the list of supported sensors, execute the following command:

Copy
Copied!

            
            curl -k -u root:'<password>' -H 'Content-Type: application/json' -X GET https://<bmc_ip>/redfish/v1/Chassis/Card1/Sensors

The following is an example of the anticipated output:

Copy
Copied!

            
            {
  "@odata.id": "/redfish/v1/Chassis/Card1/Sensors",
  "@odata.type": "#SensorCollection.SensorCollection",
  "Description": "Collection of Sensors for this Chassis",
  "Members": [
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/bluefield_temp"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/p0_temp"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/p1_temp"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/12V_ATX"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/12V_PCIe"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/1V_BMC"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/1_2V_BMC"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/1_8V"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/1_8V_BMC"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/2_5V"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/3_3V"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/3_3V_RGM"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/5V"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/DVDD"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/HVDD"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/VDD"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/VDDQ"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/VDD_CPU_L"
    },
    {
      "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/VDD_CPU_R"
    }
  ],
  "Members@odata.count": 19,
  "Name": "Sensors"
}

Get Data for Specific Sensor

Copy
Copied!

            
            curl -k -u root:'<password>' -H 'Content-Type: application/json' -X GET https://<bmc_ip>/redfish/v1/Chassis/Card1/Sensors/<sensor_name>

The following is an example of a temperature sensor BlueField reading:

Copy
Copied!

            
            curl -k -u root:'<password>' -H 'Content-Type: application/json' -X GET https://<bmc_ip>/redfish/v1/Chassis/Card1/Sensors/bluefield_temp
{
  "@odata.id": "/redfish/v1/Chassis/Card1/Sensors/bluefield_temp",
  "@odata.type": "#Sensor.v1_2_0.Sensor",
  "Id": "bluefield_temp",
  "Name": "bluefield temp",
  "Reading": 43.0,
  "ReadingRangeMax": 255.0,
  "ReadingRangeMin": 0.0,
  "ReadingType": "Temperature",
  "ReadingUnits": "Cel",
  "RelatedItem": [
    {
      "@odata.id": "/redfish/v1/Systems/Bluefield"
    }
  ],
  "Status": {
    "Conditions": [],
    "Health": "OK",
    "HealthRollup": "OK",
    "State": "Enabled"
  },
  "Thresholds": {
    "LowerCaution": {
      "Reading": 5.0
    },
    "LowerCritical": {
      "Reading": 0.0
    },
    "UpperCaution": {
      "Reading": 95.0
    },
    "UpperCritical": {
      "Reading": 105.0
    }
  }
}

Configure Sensor Thresholds

The following commands set the thresholds for sensors that support setting a threshold:

Copy
Copied!

            
            curl -k -u root:'<password>' -X PATCH https://<bmc_ip>/redfish/v1/Chassis/Card1/Sensors/<sensor name>/ -d '{"Thresholds":{"<Threshold name>": {"Reading":<value>}}}'

The following is an example of how to set the upper critical threshold for the BlueField temperature sensor:

Copy
Copied!

            
            curl -k -u root:'<password>' -X PATCH https://<bmc_ip>/redfish/v1/Chassis/Card1/Sensors/bluefield_temp -d '{"Thresholds":{"UpperCritical": {"Reading":100}}}'
{
  "@Message.ExtendedInfo": [
    {
      "@odata.type": "#Message.v1_1_1.Message",
      "Message": "The request completed successfully.",
      "MessageArgs": [],
      "MessageId": "Base.1.15.0.Success",
      "MessageSeverity": "OK",
      "Resolution": "None"
    }
  ]
}

Sensor IPMI Commands

BMC software supports reading chassis sensor information using the IPMItool.

The following table lists commands which allow reading SDR data:

Command	Description
Copy Copied! `ipmitool -C 17 -I lanplus -H <bmc_ip> -U ADMIN -P ADMIN sdr list`	Displays sensor data repository entry readings and their status
Copy Copied! `ipmitool -C 17 -I lanplus -H <bmc_ip> -U ADMIN -P ADMIN sdr elist`	Displays extended sensor information
Copy Copied! `ipmitool -C 17 -I lanplus -H <bmc_ip> -U ADMIN -P ADMIN sensor list`	Displays sensors and thresholds in a wide table format
Copy Copied! `ipmitool -C 17 -I lanplus -H <bmc_ip> -U ADMIN -P ADMIN sdr get <name>`	Displays information for sensor data records specified by sensor ID
Copy Copied! `ipmitool -C 17 -I lanplus -H <bmc_ip> -U ADMIN -P ADMIN sdr type <type>`	Displays all records from the SDR repository of a specific type
Copy Copied! `ipmitool -C 17 -I lanplus -H <bmc_ip> -U ADMIN -P ADMIN sensor get <sensor_name>`	Displays information for sensors specified by name
Copy Copied! `ipmitool -C 17 -I lanplus -H <bmc_ip> -U ADMIN -P ADMIN sensor reading <name>…<name>`	Displays readings for sensors specified by name (only for numeric sensors)
Copy Copied! `ipmitool -C 17 -I lanplus -H <bmc_ip> -U ADMIN -P ADMIN sensor thresh <sensor_name> upper <non_critical_value> <critical_value> 0 ipmitool -C 17 -I lanplus -H <bmc_ip> -U ADMIN -P ADMIN sensor thresh <sensor_name> lower 0 <critical_value> <non_critical_value>`	If the original threshold value is >0, the new threshold values must be between 0-255 If the original threshold value is <0, the new threshold values must be between 0-127 If a threshold is crossed, a message is added to the Redfish event log, SEL, and journal.

On This Page