This reports the actual running (operational) CFM state for this specific service, reflecting whether fault monitoring is genuinely active right now, as distinct from the admin state's configured intent. An admin uses a mismatch between admin and operational state here (admin enabled but oper not reflecting full activity) as a diagnostic clue that some dependency, such as an associated MEP or maintenance domain, isn't fully in place yet. For example, cienaCesCfmServiceAdminState reading 'enabled' while cienaCesCfmServiceOperState still shows something other than fully active would prompt the admin to check whether MEPs have actually been provisioned under this service.