Symptom
When connecting an Ethernet cable to the secondary controller’s management port, the port’s LED does not light up.
Diagnosis
The secondary controller’s management port is in standby mode, so the LED does not light up when an Ethernet cable is connected. This port remains inactive unless the secondary controller takes over as the primary.
Explanation
This is expected behavior. Only the primary controller’s management port LED will light up. If the primary controller fails, the secondary controller will take over its IP address, and its management port LED will then light up.