If your system is configured with a RADIUS server you can display the RADIUS server information.

Note
no RADIUS server configured
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                                    Radius Server Entries
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                                                              SECURE  SECURE SECURE   SECURE   SECURE    ACCT ACCT    
NAME           USEDBY  SECRET PORT PRIO RETRY TIMEOUT ENABLED ENABLED MODE   INSTANCE PROFILE  LOG-LEVEL PORT ENABLED 
---------------------------------------------------------------------------------------------------------------------------
192.0.2.14     cli     ****** 1812 10   1     8       true    true    tls    0        radsecp  error     1813 true    
192.0.2.15     cli     ****** 1812 10   1     8       true    false   tls    -1       default  error     1813 true