Auto-diagnostics consists of the following monitoring options, all of which are enabled by default:
- Identify blocked ports. The switch can automatically identify a blocked port that is caused by a loop condition. If this condition occurs, the Power LED lights or blinks solid amber and the icon for the affected port on the AUTO-DIAGNOSTICS page shows blue. If the condition is resolved, the Power LED is reset automatically. Regardless of whether the condition is resolved, you can clear the event on the AUTO-DIAGNOSTICS page and reset the Power LED.
- Identify ports with CRC error packet events. The switch can automatically identify a CRC error packet event. If this condition occurs, the Power LED lights or blinks solid amber and the icon for the affected port on the AUTO-DIAGNOSTICS page shows blue. You can clear the event on the AUTO-DIAGNOSTICS page and reset the Power LED. This action does not affect the statistics that are shown in the CRC Error Packets column on the Port Statistics page (see View the Port Statistics on page 64). However, if you clear the statistic on the Port Statistics page, the event on the AUTO-DIAGNOSTICS page is also cleared and the Power LED is reset.
- Identify ports with LAG problems. The switch can automatically identify whether a problem occurs with a port that is a member of a LAG or whether such a port is shut down. If this condition occurs, the Power LED lights or blinks solid amber and the icon for the affected port on the AUTO-DIAGNOSTICS page shows blue. Regardless of whether the condition is resolved, you can clear the event on the AUTO-DIAGNOSTICS page and reset the Power LED.
- Identify an unsuccessful firmware upgrade. The switch can automatically identify an unsuccessful firmware upgrade, including an attempt to load an invalid image. If a power cycle occurs during a firmware upgrade, a notification does not occur. If an unsuccessful firmware upgrade occurs, the Power LED lights or blinks solid amber and the FAILED button on the AUTO-DIAGNOSTICS page shows blue. You can clear the event on the AUTO-DIAGNOSTICS page and reset the Power LED.
You can enable and disable these monitoring options individually.
To manage the auto-diagnostics options or clear an event or problem on the AUTO-DIAGNOSTICS page and reset the Power LED:
- Open a web browser from a computer that is connected to the same network as the switch or to the switch directly through an Ethernet cable.
- Enter the IP address that is assigned to the switch.
The login page opens. - Enter the switch password.
The default password is password. The password is case-sensitive.
The Home page displays. - From the menu at the top of the page, select MONITORING.
The CABLE TEST page displays. - From the menu on the left, select AUTO-DIAGNOSTICS.
The AUTO-DIAGNOSTICS page displays. - To enable or disable an individual auto-diagnostic option, click the Monitor OFF/ON button in the individual section.
The button for an enabled auto-diagnostic option shows blue. - Click the APPLY button.
Your settings are saved.
If an event or problem occurs, the icons for the affected ports show blue. If an unsuccessful firmware upgrade occurs, the FAILED button shows blue. (The FAILED button is not operable, but the CLEAR button is. See the following step.) - To clear an event or problem that displays for an individual auto-diagnostic option and reset the Power LED, click the CLEAR button in the individual section.
If it is displayed, the CLEAR button shows blue. After you click the CLEAR button, it no longer displays. However, if you do not resolve a blocked port condition or a problem with a LAG port, after a while the CLEAR button will display again. - If you restart the switch, all conditions are cleared. However, if you do not resolve a blocked port condition or a problem with a LAG port, the condition will occur again.
Last Updated:07/07/2025
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Article ID: 000051457