Allied Telesis AT-S60 - Manual (Page 558)

AT-S60 Management Software User’s Guide
Section IV: Web Browser Management 557
4. To select an authentication protocol, click either TACACS+ or RADIUS
in the Authentication Method section of the tab. The default is
TACACS+.
Note
Only one authentication protocol can be active on the switch at a
time.
5. Click Apply.
6. To save your changes, return to the General tab and click Save
Changes. The changes you made are saved on the switch.