This object contains the reason for the BERT failure.
This object gives the additional information when
cbOperStatus is set to bertFailed(6).
The possible values are :
aborted(1) : BERT test is completed as
a result of a user request.
loopbackFailed(2) : loop up operation failed.
interfaceStateChange(3) : interface State changed due to
module state change.
processorModuleStateChange(4) : Processor module
changed state.
unknown(5) : Failure Reason Unknown.