This read-only object reports the secondary service state of the Ethernet entry, using the CyanSecServiceStateTc enumeration, which supplements the primary operational state with additional service-level status. Admins consult it when the primary operational state alone doesn't explain why a service riding on the port isn't behaving as expected. For example, a port showing a normal primary operational state but an abnormal secondary service state might indicate a service-layer problem, such as a misconfigured flow point, rather than a physical link fault.