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the default authentication mode.
Default: No configuration is enabled for the console login method by default. Local
authentication is enabled for the VTY and Web login method by default.
Command Mode: Global Mode.
Usage Guide: The authentication method for Console, VTY and Web login can be
configured respectively. And authentication method can be any one or combination of
Local, RADIUS or TACACS. When login method is configuration in combination, the
preference goes from left to right. If the users have passed the authentication method,
authentication method of lower preferences will be ignored. To be mentioned, if the user
receives correspond protocol‘s answer whether refuse or incept, it will not attempt the next
authentication method (Exception: if the local authentication method failed, it will attempt
the next authentication method); it will attempt the next authentication method if it receives
nothing. And AAA function RADIUS server should be configured before the RADIUS
configuration method can be used. And TACACS server should be configured before the
TACACS configuration method can be used.
The authentication line console login command is exclusive with the ―login‖
command. The authentication line console login command configures the switch to use
the Console login method. And the login command makes the Console login to use the
passwords configured by the password command for authentication.
If local authentication is configured while no local users are configured, users will be
able to login the switch via the Console method.
Example: Configure the remote login authentication mode to radius.
Switch(config)#authentication login radius
Relative Command: aaa enable, radius-server authentication host, tacacs-server
authentication host, tacacs-server key
1.2.4 authentication securityip
Command: authentication securityip <ip-addr>
no authentication securityip <ip-addr>
Function: To configure the trusted IP address for Telnet and HTTP login method. The no
form of this command will remove the trusted IP address configuration.
Parameters: <ip-addr> is the trusted IP address of the client in dotted decimal format
which can login the switch.
Default: No trusted IP address is configured by default.
Command Mode: Global Mode.
Usage Guide: IP address of the client which can login the switch is not restricted before
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