Methods - Dell PowerConnect 8024 User Configuration Manual

Each service is configured using method lists. The method lists define how
each service is to be performed by specifying the methods available to
perform a service. The first method in a list is tried first. If the first method
returns an 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 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 10-1 summarizes the various
methods:
Table 10-1. AAA Methods
Method
enable
ias
line
local
none
radius
tacacs
Methods that never return an error cannot be followed by any other methods
in a method list.
• The enable method uses the enable password. If there is no enable
password defined, then the enable method will return an error.
178
Configuring Authentication, Authorization, and Accounting
Username?
no
yes
no
yes
no
yes
yes
Password?
yes
yes
yes
yes
no
yes
yes
Can Return an Error?
yes
no
yes
no
no
yes
yes