How to download and interpret diagnostic logs
A diagnostic log file captures historical information about a device's operation. It is important to download the diagnostic file before rebooting or power-cycling a device as part of troubleshooting. Rebooting or power-cycling will clear the log file history.
Follow these steps to download a diagnostic file for connected devices from the WebUI:
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Access the WebUI of the D621. In your browser's address bar, type:
https://hostname
where hostname is the hostname (KB-XX-XX-XX) or IP address of the radio. See Connecting to the AltoPlex radio for more information.
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Click the login link in the WebUI header to log in as administrator. The default password is admin.

- Click on the Admin tab.
- Click on the Download Diagnostic File button in the Device control section.

- The file is sent to your system's default download location. The file name includes the host name (KB MAC) of the device and the date. For example, KB-C7-00-01_diag_2025-11-07-20-32-26.txt
- Zip the file and attach it to an email to support@altowav.com or a ticket at support.altowav.com.
Create a diagnostic file from the REST API
- Use the admin/diagdump API to create a diagnostic file from the REST API. For example, use the curl command to save the diagnostic information to a file named diag_dump, created in the current directory:
curl -k -o diag_file.txt -u admin:<password> https://<hostname>/rest/v002/admin/diagdump
where:
- password is the password to log into the device. The default password is admin.
- hostname is the hostname or IP address of the device.
- Zip the file and attach it to an email to support@altowav.com or the ticket at support.altowav.com.