The switch does not receive a response to RADIUS authentication requests

In this case, the switch attempts authentication using the secondary method configured for the type of access you are using (console, Telnet, or SSH).

There can be several reasons for not receiving a response to an authentication request. Do the following:

• Use ping to ensure that the switch has access to the configured RADIUS servers.

• Verify that the switch is using the correct encryption key (RADIUS secret key) for each server.

• Verify that the switch has the correct IP address for each RADIUS server.

• Ensure that the radius-server timeout period is long enough for network conditions.