Defining the RADIUS Server Priority for RADIUS Redundancy

If more than one server has been defined for any type of authentication or accounting, you can define the priority of the servers.

You have the option to specify up to three RADIUS servers for authentication and accounting. The first server in the list is the first active server for both Primary-Backup and Round-Robin. For Primary-Backup, the first server is also the primary server. In the event of the first server fails, the next server in the list (backup server) becomes active. In the case of Round-Robin configuration, each server in the list is contacted in a round-robin fashion starting with the first server. See Configuring Advanced RADIUS Servers Settings.

If all defined RADIUS servers fail to respond, a critical message is generated in the logs.

To define the RADIUS server priority for RADIUS redundancy: