DELL N3000 User Manual

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Configuring Authentication, Authorization, and Accounting
• The aaa authorization exec “tacex” tacacs command creates an exec 
authorization method list called tacex which contains the method tacacs.
• The 
authorization exec tacex command assigns the tacex exec 
authorization method list to be used for users accessing the switch via 
Telnet.
Notes:
• If the privilege level is zero (that is, blocked), then authorization will fail 
and the user will be denied access to the switch.
• If the privilege level is higher than one, the user will be placed directly in 
Privileged EXEC mode. Note that all commands in Privileged EXEC mode 
require privilege level 15, so assigning a user a lower privilege level will be 
of no value.
• A privilege level greater than 15 is invalid and treated as if privilege level 
zero had been supplied.
• The shell service must be enabled on the TACACS+ server. If this service 
is not enabled, authorization will fail and the user will be denied access to 
the switch.
TACACS+ Authorization Example—Administrative Profiles
The switch should use the same configuration as for the previous 
authorization example.
The TACACS+ server should be configured such that it will send the “roles” 
attribute. For example:
shell:roles=router-admin
The above example attribute will give the user access to the commands 
permitted by the router-admin profile.
NOTE: 
If the priv-lvl attribute is also supplied, the user can also be placed directly 
into privileged EXEC mode.