Does RADIUS authentication require reachable routes between terminals and the RADIUS server on S series switches

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An access device exchanges packets with the RADIUS server to implement RADIUS authentication. Therefore, if there are reachable routes between the access device and the RADIUS server, reachable routes between terminals and the RADIUS server are not required.

Other related questions:
Does Portal authentication require a RADIUS server
A RADIUS server is required by external Portal authentication but not by built-in Portal authentication.

Why does RADIUS authentication fail when the RADIUS server template and RADIUS server are properly configured
This problem has the following possible causes: -The IP address of the router (a RADIUS client) is not configured on the RADIUS server, so the RADIUS server cannot send an authentication response packet to the router. -Different shared keys are configured on the router and the RADIUS server.

Why does authentication fail when the RADIUS server template is correct and the AAA authentication mode is RADIUS
The possible causes are as follows: 1. The client's IP address is not configured on the server, the IP address is configured incorrectly, and the RADIUS server does not respond to authentication packets. 2. The shared keys on the AR and RADIUS server are different. 3. The user configuration of the RADIUS server is incorrect.

Do S series switches support RADIUS server functions
S series switches can only function as RADIUS clients but not RADIUS servers.

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