System information

Command Reference to Check Your Memory 107
Command Reference to Check Your Memory
This section includes the most important configuration and EXEC commands covered in
this chapter. To see how well you have memorized the commands as a side effect of your
other studies, cover the left side of the table with a piece of paper, read the descriptions on
the right side, and see whether you remember the commands.
Table 3-13 Chapter 3 Configuration Command Reference
Command Description
enable secret
password
A global configuration mode command that configures a
router’s enable secret password
password password A line configuration mode command that configures a
password for a line (such as a con, aux, or vty line)
login A line configuration mode command that configures a line to
require a login
service password-
encryption
A global configuration mode command that encrypts plain-
text passwords in a router’s configuration
exec-timeout
minutes [seconds]
A line configuration mode command that specifies an
inactivity period before logging out a user
security
authentication
failure rate
number_of_failed_at
tempts log
A global configuration mode command used to specify the
maximum number of failed attempts (in the range of 2 to
1024) before introducing a 15-second delay; also generates a
log message if the specified threshold is exceeded
privilege mode
{level level
command | reset
command}
A global configuration mode command used to associate a
command (issued in a specific mode) with a specified
privilege level, in the range 0 to 15 (although custom privilege
levels are in the range 1 to 14), or to reset a command to its
default level
aaa new-model A global configuration mode command used to enable
authentication, authorization, and accounting (AAA)
parser view
view_name
A global configuration mode command used to create a new
view
secret 0 password A view configuration mode command used to set the password
required to invoke the view
commands
parser_mode
{include | include-
exclusive | exclude}
[all] [interface
interface_identifier |
command]
A view configuration mode command that allows an
administrator to specify a command (or interface) available to
a particular view
continues