Allied Telesis AT-S63 - Manual (Page 704)

Chapter 42: TACACS+ and RADIUS Commands
704 Section IX: Management Security
PURGE AUTHENTICATION
Syntax
purge authentication
Parameters
None.
Description
This command disables authentication, returns the authentication method
to TACACS+, deletes any global secret, and returns the timeout value to
its default setting of 10 seconds. This command does not delete the IP
address or secret of any RADIUS or TACACS+ authentication servers you
may have specified.
Example
The following command returns the authentication settings to their default
values:
purge authentication