Layer 2 protocols are disabled by default. To enable Layer 2 protocols, use the no disable command. For example, in PROTOCOLSPANNING TREE mode, enter no disable to enable Spanning Tree.Obtaining HelpObtain a list of keywords and a brief functional description of those keywords at any CLI mode using the ? or help command:• To list the keywords available in the current mode, enter ? at the prompt or after a keyword.• Enter ? after a command prompt to list all of the available keywords. The output of this command is the same as the help command.Dell#?bmp BMP commandscd Change current directoryclear Reset functionsclock Manage the system clock• Enter ? after a partial keyword lists all of the keywords that begin with the specified letters.Dell(conf)#cl?class-mapclockDell(conf)#cl• Enter [space]? after a keyword lists all of the keywords that can follow the specified keyword.Dell(conf)#clock ?summer-time Configure summer (daylight savings) timetimezone Configure time zoneDell(conf)#clockEntering and Editing CommandsNotes for entering commands.• The CLI is not case-sensitive.• You can enter partial CLI keywords.• Enter the minimum number of letters to uniquely identify a command. For example, you cannot enter cl as a partial keywordbecause both the clock and class-map commands begin with the letters “cl.” You can enter clo, however, as a partial keywordbecause only one command begins with those three letters.• The TAB key auto-completes keywords in commands. Enter the minimum number of letters to uniquely identify a command.• The UP and DOWN arrow keys display previously entered commands (refer to Command History).• The BACKSPACE and DELETE keys erase the previous letter.• Key combinations are available to move quickly across the command line. The following table describes these short-cut keycombinations.Short-Cut KeyCombinationActionCNTL-A Moves the cursor to the beginning of the command line.CNTL-B Moves the cursor back one character.CNTL-D Deletes character at cursor.CNTL-E Moves the cursor to the end of the line.CNTL-F Moves the cursor forward one character.CNTL-I Completes a keyword.CNTL-K Deletes all characters from the cursor to the end of the command line.CNTL-L Re-enters the previous command.Configuration Fundamentals 43
