| Line Status | Protocol Status | Interface Status | Typical Root Cause |
| Administratively Down |
Down | disabled | The interface is configured with the shutdown command. |
| Down | Down | notconnect | No cable; bad cable; wrong cable; pinouts;the speeds are mismatched on the two connected devices; the device on the other end of the cable is powered off or the other interface is shutdown. |
| Up | Down | notconnect | An interface up/down state is not expected on LAN switch interfaces. |
| Down | Down (err-disabled) |
err-disabled | Port security has disabled the interface. |
| Up | Up | connect | The interface is working. |
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