Abstract: A method and apparatus of a management device that determine a root cause of a device failure is described. In an exemplary embodiment, the management device receives an indication of the device failure for a first device, where the first device is part of a system of a plurality of devices. The management device further applies a set of one or more rules to measure a set of input signals of the first device. if the set of input signals are within a corresponding operating range, the management device marks the first device as failed. Alternatively, if one or more of the set of input signals are outside the corresponding operating range, the management device iteratively determines that a second device of the plurality devices that is coupled to the first devices has at least one output signal that is outside of the corresponding operating range and the input signals of the second device is within the corresponding operating range, and marks the second device as a root cause failure of the first device.

Abstract: A method and apparatus of a management device that sends a command to a device is described. In an exemplary embodiment, the management device receives an operation for a managed device, wherein the operation includes an operation request, operation command, and operation response. The management device determines a device type and protocol and identifies an operation request for the device protocol. The management device further populates a device command for the device from at least one of the operation command and operation request. In addition, the management device sends the device command to the managed device and receives a device response from the managed device. Furthermore, the management device populates an operation response from the device response. The management device additionally sends the operation response to a software system that stores the operation response.

Abstract: A method and apparatus of a management device that determine a root cause of a device failure is described. In an exemplary embodiment, the management device receives an indication of the device failure for a first device, where the first device is part of a system of a plurality of devices. The management device further applies a set of one or more rules to measure a set of input signals of the first device. if the set of input signals are within a corresponding operating range, the management device marks the first device as failed. Alternatively, if one or more of the set of input signals are outside the corresponding operating range, the management device iteratively determines that a second device of the plurality devices that is coupled to the first devices has at least one output signal that is outside of the corresponding operating range and the input signals of the second device is within the corresponding operating range, and marks the second device as a root cause failure of the first device.