Each port on the front panel of the 9920-4D interface module contains one tri-color LED that indicates link rate and link status. Each port has three additional green LEDs that indicate sub-channel selection. The font panel also contains a Channel Selector button, which cycles through the eight selectable channels. The selected channel applies to all ports on the card.
| Channel Indicators | |||
|---|---|---|---|
| LED 0 (Green) | LED 1 (Green) | LED 2 (Green) | Channel Number |
| 1 | |||
| X | 2 | ||
| X | 3 | ||
| X | X | 4 | |
| X | 5 | ||
| X | X | 6 | |
| X | X | 7 | |
| X | X | X | 8 |
The rate indication determines if a port is channelized. The link status for the entire port is indicated regardless of the channel selected when the port is not channelized.
The rate/link/activity LEDs use the colors red, green, and blue and indicate the configured port rate, port linkage, and port traffic activity. The LEDs also indicate fault conditions.
| LED | Color and State | Description | Red | Green | Blue | Blink |
|---|---|---|---|---|---|---|
| Link/Activity | Off | No link or fault. The port is either administratively disabled, or is enabled but no transceiver is installed. | ||||
| Solid Cyan | Link in 400 Gbps mode for QSFPDD, 10 Gbps for all other port types. | X | X | |||
| Fast Blinking Cyan | Activity at 400 Gbps mode for QSFPDD, 10 Gbps for all other port types. | X | X | X | ||
| Solid White | Link in 100 Gbps mode. | X | X | X | ||
| Fast Blinking White | Activity in 100 Gbps mode. | X | X | X | X | |
| Solid Yellow | Link in 50 Gbps mode. | X | X | |||
| Fast Blinking Yellow | Activity in 50 Gbps mode. | X | X | X | ||
| Solid Blue | Link in 40 Gbps mode. | X | ||||
| Fast Blinking Blue | Activity in 40 Gbps mode. | X | X | |||
| Solid Magenta | Link in 200 Gbps mode. | X | X | |||
| Fast Blinking Magenta | Activity in 200 Gbps mode. | X | X | X | ||
| Solid Green | Link at 25 Gbps (also 10 Gbps for 400 Gbps ports). | X | ||||
| Fast Blinking Green | Activity at 25 Gbps (also 10 Gbps for 400 Gbps ports). | X | X | |||
| Solid Red | Local fault detected. | X | ||||
| Blinking Red | Remote fault detected. | X | X |