MIB: HOST-RESOURCES-MIB
The current operational state of the device described by this row of the table.
* `unknown(1)` indicates that the current state of the device is unknown.
* `running(2)` indicates that the device is up and running and that no unusual error conditions are known.
* `warning(3)` indicates that the agent has been informed of an unusual error condition by the operational software (e.g., a disk device driver) but that the device is still operational.
* `testing(4)` indicates that the device is not available for use because it is in the testing state.
* `down(5)` is used only when the agent has been informed that the device is not available for any use.