Allied Telesis AT-S63 - Manual (Page 242)

Chapter 15: File Download and Upload Commands
242 Section II: Advanced Operations
After the switch receives the file, it marks the file as its active boot
configuration file and automatically resets itself so that it starts running
with the new settings.
Since the configuration file was designated by its filename, the entire file
without modifications is uploaded. This type of configuration file upload
should be performed with care. If the configuration file contains a
command that assigns the switch a set IP address, more than one switch
could end up with the same IP address.