HP Bc1500 - BladeSystem - Blade PC Reference Manual page 46

AAA Commands
Create a list by entering the aaa authentication login list-name method command for a
particular protocol, where list-name is any character string used to name this list. The method
argument identifies the list of methods that the authentication algorithm tries, in the given
sequence.
The additional methods of authentication are used only if the previous method returns an error,
not if it fails. To ensure that the authentication succeeds even if all methods return an error,
specify none as the final method in the command line.
Example
The following command configures the authentication login.
Console(config)# aaa authentication login default radius local enable none
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