Refer to the exhibit.
Examine the packet capture shown in the exhibit, which contains a RADIUS access request packet sent by FortiSwitch to a RADIUS server.
Why does the User-Name field in the RADIUS access request packet contain a MAC address?
The FortiSwitch interface is configured for 802 IX port authentication with MAC address bypass, andthe connected device does not support 802.1X.
FortiSwitch authenticates itself using its MAC address as the user name.
The connected device is doing machine authentication
FortiSwitch is replying to an access challenge packet sent by the RADIUS server and requesting the client MAC address.