TP-Link T1600G-18TS Configuration Manual page 597

Configuring Network Security
Figure 6-5 Add Server to Group
 Configuring the Dot1x List
Choose the menu Network Security > AAA > Dot1x List to load the following page.
Figure 6-6 Configuring the Dot1x List
Follow these steps to configure RADIUS server groups for 802.1X authentication and
accounting:
1) In the Authentication Dot1x Method List section, select an existing RADIUS server
group for authentication from the Pri1 drop-down list and click Apply.
2) In the Accounting Dot1x Method List section, select an existing RADIUS server group
for accounting from the Pri1 drop-down list and click Apply.
802.1X Configuration
Configuration Guide 574