Dell EMC SmartFabric OS10 User Guide Release 10.5.0

AAA authentication

An OS10 switch uses a list of authentication methods to define the types of authentication and the sequence in which they apply. By default, OS10 uses only the local authentication method.

The authentication methods in the method list execute in the order you configure them. Re-enter the methods to change the order. The local authentication method remains enabled even if you remove all configured methods in the list using the no aaa authentication login {console | default} command.

• Configure the AAA authentication method in CONFIGURATION mode.

  aaa authentication login {console | default} {local | group radius | group tacacs+}

  • console—Configure authentication methods for console logins.
  • default—Configure authentication methods for nonconsole such as SSH and Telnet logins.
  • local—Use the local username, password, and role entries configured with the username password role command.
  • group radius—Configure RADIUS servers using the radius-server host command.
  • group tacacs+—Configure TACACS+ servers using the tacacs-server host command.

Configure user role on server

If a console user logs in with RADIUS or TACACS+ authentication, the role you configured for the user on the RADIUS or TACACS+ server applies. User authentication fails if no role is configured on the authentication server.

To authenticate a user on OS10 through a TACACS+ server, configure the mandatory role with the value sysadmin along with 15 as privilege level on the TACACS+ Server. The following figure shows the Cisco ISE TACACS server configuration:

Also, you must configure the user role on the RADIUS or TACACS+ server using the vendor-specific attribute (VSA) or the authentication fails. The vendor ID of Dell EMC is 674. Create a VSA with Name = Dell-group-name, OID = 2, Type = string. Valid values for Dell-group-name are sysadmin, secadmin, netadmin, and netoperator. Use the VSA Dell-group-name values when you create users on a Radius or TACACS+ server.

For detailed information about how to configure vendor-specific attributes on a RADIUS or TACACS+ server, see the respective RADIUS or TACACS+ server documentation.

Configure AAA authentication

OS10(config)# aaa authentication login default group radius local 
OS10(config)# do show running-configuration aaa
aaa authentication login default group radius local
aaa authentication login console local

Remove AAA authentication methods

OS10(config)# no aaa authentication login default 
OS10(config)# do show running-configuration aaa
aaa authentication login default local
aaa authentication login console local