I've configured RADIUS on my switch as below:

aaa new-model


aaa authentication login default group radius local

aaa authorization exec default group radius local 


radius-server host auth-port 1812 acct-port 1813

radius-server key sokootsk


line vty 0 30

login authentication default


username mbazgir secret 5 $1$cKA6$x.x.x.x.x.x.x.x.x.x.x.x.x 

when attempt to login to the switch from users on my server through telnet, it successfully be done, but when I use the local user (mbazgir) to login to switch through its console while the RADIUS server is not accessible, the logging fails and the switch replays "Authentication fails".

why it fails?? How to solve it??


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