Radius, group named-group,local, or line options

Authentication, Authorization, and Accounting Commands on Cisco IOS XR Software

aaa authentication

Command History	Release	Modification
	Release 2.0	This command was introduced on the Cisco CRS-1.

	Release 3.0	No modification.

	Release 3.2	This command was supported on the Cisco XR 12000 Series Router.

	Release 3.3.0	The method-listargument was added to specify either group tacacs+, group
		radius, group named-group,local, or line options.

Usage Guidelines			To use this command, you must be in a user group associated with a task group that includes the proper
			task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on
			Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.
			Use the aaa authentication command to create a series of authentication methods, or method list. You
			can specify up to four methods in the method list. A method list is a named list describing the
			authentication methods to be used (such as TACACS+ or RADIUS) in sequence. The subsequent
			methods of authentication are used only if the initial method is not available, not if it fails.
			The default method list is applied for all interfaces for authentication, except when a different named
			method list is explicitly specified—in which case the explicitly specified method list overrides the
			default list.
			For console and vty access, if no authentication is configured, a default of local method is applied.

Note			• The group tacacs+, group radius, and group group-nameforms of this command refer to a set of
			previously defined TACACS+ or RADIUS servers.
			• Use the tacacs-server host or radius-server host command to configure the host servers.
			• Use the aaa group server tacacs+ or aaa group server radius command to create a named subset
			of servers.
			• The login keyword, remote keyword, local option, and group option are available only in
			administration configuration mode.

Examples

The following example shows how to specify the default method list to be used for authentication, and also enable authentication for console:

RP/0/RP0/CPU0:router# configure

RP/0/RP0/CPU0:router(config)# aaa authentication login default group tacacs+

Related Commands	Command	Description
	aaa accounting	Creates a method list for accounting.

	aaa authorization	Creates a method list for authorization.

Cisco IOS XR System Security Command Reference

Cisco Systems XR manual Radius, group named-group,local, or line options, SR-7