Dell N3200-ON EMC Networking N-Series Switches User Guide version 6.6.3 - Page 288

error, the next method in the list is tried. This continues until all methods in the list have been attempted. If no method can perform the service, then the service fails. A method may return an error due to lack of network access, misconfiguration of a server, and other reasons. If there is no error, the method returns success if the user is allowed access to the service and failure if the user is not. AAA gives the user flexibility in configuration by allowing different method lists to be assigned to different access lines. In this way, it is possible to configure different security requirements for the serial console than for Telnet, for example. Methods A method performs authentication or authorization for the configured service. Not every method is available for every service. Some methods require a username and password and other methods only require a password. Table 9-1 summarizes the various methods: Table 9-1. AAA Methods Method enable ias line local none radius tacacs Username? no yes no yes no yes yes Password? yes yes yes yes no yes yes Can Return an Error? yes no yes yes no yes yes 288 Authentication, Authorization, and Accounting