Hi,   The configuration seems to be fine. You could use /21 subnet in guest VLAN from where you are able to access the WAP. By doing this, we may eliminate the issue with /21 subnet.   If that does not resolve the issue, please open a service request...

Hi,   You might consider resetting the switch and reconfiguring it after taking the backup of the existing configuration.   The firmware is already the latest one. Hence, firmware doesn't seem to be an issue here. In case that doesn't work, you may n...

Hi,   Since, the device seems to be rebooting on its own-it seems there might be a hardware failure with the device. Please call the SBSC to get a case opened and they will help you with the replacement of this switch.   Cisco Support Frontline Phone...