Provides operational state of the given module. The exact definition of the values is implementation specific. A value of unknown(1) implies some undetermined state, possibly as a result of a module failing the low-level selftest. A value of invalid(2) may mean that the module exists but the chassis manager has no direct control over it. A value of operational(3) implies that the entity is running with no errors or warnings. A value of disabled(4) reflects the response to the chasModuleAdminStatus of disable(4). A value of resetInProgress(5) also reflects the equivalent AdminStatus reset(5).

Note that the states warning(8), nonFatalError(9), and fatalError(10) reflect conditions detected during operation. The module may or may not be fuctional at this point.

For example a module's value of AdminStatus is disable(4), the OperStatus will reflect that. The AdminStatus is set to enable(3), the OperStatus might then change to testing(7) then change to operational(3).