Overview
In some scenarios, the Inovelli VZW32-SN switch may not properly save configuration changes made to the onboard mmWave module. When this occurs, parameter values appear to save initially but later revert to their previous settings.
This article explains how to identify the issue and provides a recommended workaround to ensure the mmWave parameters are successfully written.
How to Identify the Issue
After changing mmWave parameters, you can verify whether the values were saved correctly by following these steps:
Change one or more mmWave parameters.
Refresh the mmWave properties in your hub.
Observe the values:
If the values remain as configured, the settings were saved correctly.
If the values revert back to their previous state, the mmWave module did not retain the changes.
Affected Parameters
This issue has been observed with the following mmWave parameters:
Parameters 101–106
Recommended Workaround
If your mmWave settings are reverting, follow the steps below carefully. Timing is important.
Step 1: Set Parameters Individually
Set Parameter 101 to your desired value.
Wait 10 seconds.
Set Parameter 102.
Wait 10 seconds.
Repeat this process for Parameters 103 through 106, waiting 10 seconds between each parameter change.
⚠️ Do not change multiple parameters at once.
Important Note About Existing Values
If you already have your preferred mmWave values configured and are only performing this process to force the settings to save, you do not need to make large changes.
Changing a parameter by a value of ±1 is sufficient.
This ensures the switch writes the value to the mmWave module without significantly impacting your measurements.
Example:
If Parameter 101 is currently set to -100 and that is your desired value, you may temporarily change it to -101.
This allows the parameter to be re-written while keeping behavior effectively the same.
Repeat this small adjustment for each parameter (101–106) during the process.
Step 2: Reboot the Switch Using the Air Gap
Wait at least 10 seconds after the last setting was changed.
Pull the air gap on the switch to fully power it down.
Leave the air gap pulled for 5 seconds.
Push the air gap back in to restore power.
Step 3: Verify the Settings
Wait for the switch to fully boot (wait at least 30 seconds).
Refresh the mmWave properties in your hub.
Confirm that Parameters 101–106 remain at the values you set.
If the values remain unchanged after the refresh, the settings have been successfully saved.
Additional Notes
This behavior is intermittent and does not affect all devices.
Performing parameter changes too quickly or in bulk may prevent the mmWave module from committing the values.
Using the air gap ensures the mmWave module fully reinitializes with the new configuration.