Port Statuses
An enumeration of all the LED colors you might see on a switch or router.
| Color | Status |
|---|---|
| Solid Green 🟢 | Link connected, no traffic |
| Flickering Green 🟩 | Link operational (connected with traffic) |
| No light | Port isn't working or is shut down |
| Blinking Amber 🟥 | Fault has been detected (duplex mismatch, excessive collisions, redundancy check errors, etc.) |
| Solid amber 🔴 | Port has been blocked by Spanning Tree |
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