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authentication login
Use this command to define the login authentication method and
precedence. Use the no form to restore the default.
Syntax
authentication login {[local] [radius] [tacacs]}
no authentication login
• local - Use local password only.
• radius - Use RADIUS server password only.
• tacacs - Use TACACS server password only.
Default Setting
Local
Command Mode
Global Configuration
Command Usage
• RADIUS uses UDP while TACACS+ uses TCP. UDP only offers best
effort delivery, while TCP offers a connection-oriented transport. Also,
note that RADIUS encrypts only the password in the access-request
packet from the client to the server.
• RADIUS and TACACS+ logon authentication can control
management access via the console port, a Web browser, or Telnet.
These access options must be configured on the authentication server.
• RADIUS and TACACS+ logon authentication assigns a specific
privilege level for each user name and password pair. The user name,
password, and privilege level must be configured on the authentication
server.
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