Table 2: Common CLI Error Messages
How to Get HelpMeaningError Message
Reenterthe command followed by
aquestion mark (?) with a space
betweenthe command and the
questionmark.
Thepossible keywords that you can
enterwith the commandappear.
Youdid not enter enough
charactersfor your switchto
recognizethe command.
% Ambiguous command: "show
con"
Reenterthe command followed by
aquestion mark (?) with a space
betweenthe command and the
questionmark.
Thepossible keywords that you can
enterwith the commandappear.
Youdid not enter all the keywords
orvalues required bythis
command.
% Incomplete command.
Entera question mark (?) to display
allthe commands that are available
inthis commandmode.
Thepossible keywords that you can
enterwith the commandappear.
Youentered the command
incorrectly.The caret (^) marks the
pointof theerror.
% Invalid input detected at
‘^’marker.

Configuration Logging

Youcan log and view changes to the switch configuration. You can use the Configuration Change Logging
andNotification feature to track changes on a per-session and per-user basis. The logger tracks each
configurationcommand that is applied, the userwho enteredthe command, the timethat the command was
entered,and the parser return code for the command. This feature includes a mechanism for asynchronous
notificationto registered applications whenever the configuration changes. You can choose to have the
notificationssent to thesyslog.
OnlyCLI or HTTP changes are logged.Note
How to Use the CLI to Configure Features

Configuring the Command History

Thesoftware provides a history or record of commands that you have entered. The command history feature
isparticularly useful for recalling long or complex commands or entries, including access lists. You can
customizethis feature to suit your needs.
Catalyst 2960-XR Switch VLAN Configuration Guide, Cisco IOS Release 15.0(2)EX1
OL-29440-01 5
Using the Command-Line Interface
Configuration Logging