The meaning of the colors and states for the QSFP28 port LEDs are described in QSFP28 Link/Activity Port LEDs.
| State | Description | Red | Green | Blue | Blink |
|---|---|---|---|---|---|
| Solid cyan | Link at 400Gbps for QSFP-DD, 10Gbps for all other port types. | 0 | 1 | 1 | 0 |
| Fast blinking cyan | Activity at 400Gbps for QSFPDD, 10Gbps for all other port types. | 0 | 1 | 1 | 1 |
| Solid white | Link at 100Gbps. | 1 | 1 | 1 | - |
| Fast blinking white | Activity at 100Gbps. | 1 | 1 | 1 | 1 |
| Solid blue | Link at 40Gbps. | 0 | 0 | 1 | 0 |
| Fast blinking blue | Activity at 40Gbps. | 0 | 0 | 1 | 1 |
| Solid green | Link at 25Gbps or 10Gbps. | 0 | 1 | 0 | 0 |
| Fast blinking green | Activity at 25Gbps or 10Gbps. | 0 | 1 | 0 | 1 |
| Solid red | Local fault Detected. | 1 | 0 | 0 | 0 |
| Blinking red | Remote fault detected. | 1 | 0 | 0 | 1 |
| Off | No link or fault. Port is either administratively disabled or enabled but no transceiver is installed | 0 | 0 | 0 | 0 |