TP-Link Omada ER8411 VPN Router - Manual (Page 205)

User Guide 196
Configuring Authentication Radius Authentication Configuration
Primary Radius
Server
Enter the IP address of the primary Radius server.
Secondary
Radius Server
(Optional) Enter the IP address of the secondary Radius server. If the primary
server is down, the secondary server will be effective.
Authentication
Port
Enter the service port for Radius authentication. By default, it is 1812.
Authorized Share
Key
Specify the authorized share key. This key should be the same configured in the
Radius server.
Retry Times Specify the number of times the router will retry sending authentication requests
after the authentication failed.
Timeout Interval Specify the timeout interval that the client can wait before the radius server
replies.
Authentication
Method
Specify the authentication protocol as PAP or CHAP.