|
|
Table Of Contents
Understanding the User Interface
ATM Accounting File Configuration Mode
ATM Accounting Selection Configuration Mode
ATM E.164 Translation Table Configuration Mode
ATM Signaling Diagnostics Configuration Mode
Configuring Help for Terminal Sessions
Displaying Context-Sensitive Help
Using the Command History Features
Setting the Command History Buffer Size
Disabling the Command History Feature
Enabling Enhanced Editing Mode
Moving Around on the Command Line
Completing a Partial Command Name
Editing Command Lines That Wrap
Scrolling Down a Line or a Screen
Redisplaying the Current Command Line
Transposing Mistyped Characters
Designating a Keystroke as a Command Entry
Disabling Enhanced Editing Mode
Cisco DSLAM User Interface
This chapter describes the Cisco DSLAM user interface, provides instructions for using the command-line interface, and describes how to use the help system. The chapter also describes the command editing and command history features that you can use to recall previous command entries and edit previously entered commands.
This chapter includes the following sections:
•
Understanding the User Interface
•
•
Understanding the User Interface
The Cisco DSLAM user interface provides access to several different command modes, each with related commands. For security, the user interface provides three levels of access to commands:
•
•
Note
From the privileged EXEC mode, you can access global configuration mode and three specific configuration modes:
–
–
–
•
You can enter commands in uppercase, lowercase, or both. Only passwords are case sensitive. You can abbreviate commands and keywords to a unique number of characters. For example, you can abbreviate the show command to sh. After you enter the command line at the system prompt, press Return to execute the command.
Most configuration commands have a no form. In general, follow these guidelines:
•
•
You can use the context-sensitive help system to obtain a list of commands available for each command mode or a list of available options for a specific command by entering a question mark (?).
Accessing Command Modes
This section describes how to access the Cisco DSLAM command modes. Table 1-1 lists the following information:
•
•
•
•
Note
Understanding Command Modes
This section describes the various command modes and their levels of user access, including:
•
•
•
•
•
•
•
•
•
User EXEC Mode
When you log in to the Cisco DSLAM, you are in user EXEC, or simply EXEC, command mode. The EXEC mode commands available at the user level are a subset of those available at the privileged level. In general, the user EXEC mode commands allow you to connect to remote switches, change terminal settings on a temporary basis, perform basic tests, and list system information.
The user EXEC mode prompt consists of the DSLAM host name followed by the angle bracket (>):
Frodo>or
DSLAM>The default host name is DSLAM, unless you used the host name global configuration command to change the name of the host.
Privileged EXEC Mode
The privileged EXEC mode command set includes all user EXEC mode commands and the configure command, through which you can access global configuration mode and the remaining configuration submodes. Privileged EXEC mode also includes high-level testing commands, such as debug, and commands that display potentially secure information.
To enter or exit privileged EXEC mode, follow these steps:
Step 1
DSLAM> enable
Password:password
Enter privileged EXEC mode from EXEC mode.1
Step 2
DSLAM#
Enter privileged EXEC commands.
Step 3
DSLAM# disable
DSLAM>
Exit privileged EXEC mode and return to EXEC mode.2
1 The prompt changes to the DSLAM host name followed by the pound sign (#).
2 The prompt changes back to the DSLAM host name followed by the angle bracket (>).
The system administrator uses the enable password global configuration command to set the password, which is case sensitive. If an enable password was not set, you can access privileged EXEC mode only from the console.
ROM Monitor Mode
ROM monitor mode provides access to a basic system kernel from which you can boot the Cisco DSLAM or perform diagnostic tests. The system can enter ROM mode automatically if the Cisco DSLAM does not find a valid system image, or if the configuration file is corrupted. The ROM monitor prompt is rommon x> without the DSLAM host name. The x represents the number of commands entered into the prompt.
You can also enter ROM monitor mode by intentionally interrupting the boot sequence by using the Break key during loading.
To return to EXEC mode from ROM monitor mode, use the cont command:
rommon 1> contDSLAM>Global Configuration Mode
Global configuration mode provides access to commands that apply to the entire system. From global configuration mode, you can also enter the other configuration modes described in these sections.
Interface Configuration Mode
Interface configuration mode provides access to commands that apply to an interface. Use these commands to modify the operation of an interface such as an ATM, Ethernet, or asynchronous port.
Profile Mode
Profile mode provides access to DSL profile commands. (See "Using DSL Profiles.")
Line Configuration Mode
Line configuration mode provides access to commands used to configure lines on the DSLAM.
ATM Router Configuration Mode
ATM router configuration mode provides access to commands that you use to configure Private Network-to-Network Interface (PNNI) routing.
PNNI Node Configuration Mode
The PNNI node configuration mode is a submode of ATM router configuration mode and provides access to commands that you use to configure PNNI nodes on the Cisco DSLAM.
Redundancy Configuration Mode
The redundancy configuration mode provides access to commands that you use to configure redundancy on the DSLAM.
VRF Configuration Mode
The VPN routing/forwarding instance (VRF) configuration mode provides access to commands that you use to configure a VRF on the DSLAM.
DHCP Pool Configuration Mode
The DHCP configuration mode provides access to commands that you use to configure a DHCP server on the DSLAM.
ATM Accounting File Configuration Mode
ATM accounting file configuration mode provides access to commands that you use to configure a file for accounting and billing of virtual circuits (VCs).
ATM Accounting Selection Configuration Mode
ATM accounting selection configuration mode provides access to commands that you use to specify the connection data that the DSLAM will gather.
ATM E.164 Translation Table Configuration Mode
ATM E.164 translation table configuration mode provides access to commands that you use to configure the translation table that maps native E.164 format addresses to ATM end system (AESA) format addresses.
ATM Signaling Diagnostics Configuration Mode
ATM signaling diagnostics configuration mode provides access to commands that you use to configure the signaling diagnostics table.
Using Context-Sensitive Help
The user interface provides context-sensitive help in all modes. This section describes how to configure and display context-sensitive help.
Configuring Help for Terminal Sessions
The following commands configure full help.
Displaying Context-Sensitive Help
To get help that is specific to a command mode, a command, a keyword, or an argument, perform one of these tasks:
Using Word Help
To view a list of commands that begin with a particular character sequence, type those characters followed immediately by the question mark (?). Do not include a space. This form of help is called word help, because it completes a word for you.
In this example, the system displays the possible commands in privileged EXEC mode that begin with "co."
DSLAM# co?configure connect copyThis feature helps you determine the minimum subset that you can use when you abbreviate a command.
Command Syntax Help
To list keywords or arguments, enter a question mark (?) in place of a keyword or argument. Include a space before the ?. This form of help is called command syntax help, because it reminds you which keywords or arguments are applicable, based on the command, keywords, and arguments you have already entered.
This example demonstrates the use of command syntax help to complete the access-list command. Entering the question mark (?) displays the allowed arguments:
DSLAM(config)# access-list ?<1-99> IP standard access list<100-199> IP extended access listEnter the access list number, 99, followed by a question mark (?) to display the allowed keywords:
DSLAM(config)# access-list 99 ?deny Specify packets to rejectpermit Specify packets to forwardEnter the deny argument followed by a question mark (?) to display the next argument (host name or IP address) and two keywords:
DSLAM(config)# access-list 99 deny ?Hostname or A.B.C.D Address to matchany Any source hosthost A single host addressEnter the IP address followed by a question mark (?) to display a final (optional) argument. The <CR> indicates that you can press Return to execute the command:
DSLAM(config)# access-list 99 deny 131.108.134.0 ?A.B.C.D Wildcard bits<cr>DSLAM(config)# <cr>The system adds an entry to access list 99 that denies access to all hosts on subnet 131.108.134.0.
Checking Command Syntax
The user interface provides an error indicator (^) that appears in the command string in which you have entered an incorrect or incomplete command, keyword, or argument.
This example shows a command entry that is correct up to the last element:
DSLAM# clock set 13:04:30 28 apr 98^% Invalid input detected at '^' marker.The caret symbol (^) and help response indicate the location in which the error occurs. To list the correct syntax, reenter the command, substituting a question mark (?) where the error occurred:
DSLAM# clock set 13:32:00 23 February ?<1993-2035> YearDSLAM# clock set 13:32:00 23 FebruaryEnter the year using the correct syntax and press Enter to execute the command:
DSLAM# clock set 13:32:00 23 February 1993Using the Command History Features
The user interface provides a history or record of commands you enter. You can use the command history feature for recalling long or complex commands or entries, including access lists. With the command history feature, you can complete the following tasks:
•
•
Setting the Command History Buffer Size
By default, the system records ten command lines in its history buffer. Use the following commands to set the number of command lines the system records.
Recalling Commands
To recall commands from the history buffer, perform one of these tasks:
Press Ctrl-P or the up arrow key.1
Recall commands in the history buffer, beginning with the most recent command. Repeat the key sequence to recall each previous command that you entered.
Press Ctrl-N or the down arrow key.1
Return to more recent commands in the history buffer after you recall commands with Ctrl-P or the up arrow key. Repeat the key sequence to recall successively more recent commands.
DSLAM> show history
While in EXEC mode, list the last several commands you have just entered.
1 The arrow keys function only on ANSI-compatible terminals such as VT100s.
Disabling the Command History Feature
The command history feature is automatically enabled. Use the following commands to disable it.
Using the Editing Features
The user interface includes an enhanced editing mode that provides a set of editing key functions similar to those of the Emacs editor.
Using the editing features, you can perform the following tasks:
•
•
•
•
•
•
•
•
•
Enabling Enhanced Editing Mode
Although the current software release enables the enhanced editing mode by default, you can disable it and revert to the editing mode of previous software releases. Use the following commands to reenable the enhanced editing mode.
Moving Around on the Command Line
Use these keystrokes to move the cursor around on the command line for corrections or changes:
Press Ctrl-B or press the Left Arrow key.1
Move the cursor back one character.
Press Ctrl-F or press the Right Arrow key.1
Move the cursor forward one character.
Press Ctrl-A.
Move the cursor to the beginning of the command line.
Press Ctrl-E.
Move the cursor to the end of the command line.
Press Esc B.
Move the cursor back one word.
Press Esc F.
Move the cursor forward one word.
1 The arrow keys function only on ANSI-compatible terminals such as VT100s.
Completing a Partial Command Name
If you cannot remember a complete command name, you can use Tab to allow the system to complete a partial entry:
If your keyboard does not have Tab, press Ctrl-I instead.
In this example, when you enter the letters conf and press Tab, the system provides the complete command:
DSLAM# conf<Tab>DSLAM# configureIf you enter an ambiguous set of characters, the system generates an error message. To display the list of legal commands beginning with the specified string, enter a question mark (?) after you see the error message. See the "Using Word Help" section.
Pasting in Buffer Entries
The system provides a buffer that contains the last ten items that you deleted. You can recall these items and paste them in the command line by using these keystrokes:
Press Ctrl-Y.
Recall the most recent entry in the buffer.
Press Esc Y.
Recall the next buffer entry.
The buffer contains only the last ten items that you have deleted or cut. If you press Esc Y more than 10 times, you cycle back to the first buffer entry.
Editing Command Lines That Wrap
The new editing command set provides a wraparound feature for commands that extend beyond a single line on the screen. When the cursor reaches the right margin, the command line shifts ten spaces to the left. You cannot see the first ten characters of the line, but you can scroll back and check the syntax at the beginning of the command. To scroll back, use these keystrokes:
Press Ctrl-B or the Left Arrow key1 repeatedly.
Scroll back one character at a time to the beginning of a command line to verify that you entered a lengthy command correctly.
Press Ctrl-A.
Return directly to the beginning of the line.
1 The arrow keys function only on ANSI-compatible terminals such as VT100s.
In this example, the access-list command entry extends beyond one line. When the cursor reaches the end of the line, the line is shifted ten spaces to the left and redisplayed. The dollar sign ($) indicates that the line has been scrolled to the left. Each time the cursor reaches the end of the line, the line is again shifted ten spaces to the left.
DSLAM(config)# access-list 101 permit tcp 131.108.2.5 255.255.255.0 131.108.1DSLAM(config)# $ 101 permit tcp 131.108.2.5 255.255.255.0 131.108.1.20 255.25DSLAM(config)# $t tcp 131.108.2.5 255.255.255.0 131.108.1.20 255.255.255.0 eqDSLAM(config)#$108.2.5 255.255.255.0 131.108.1.20 255.255.255.0 eq 45When you complete the entry, press Ctrl-A to check the complete syntax before pressing Return to execute the command. The dollar sign ($) appears at the end of the line to indicate that the line has scrolled to the right:
DSLAM(config)# access-list 101 permit tcp 131.108.2.5 255.255.255.0 131.108.1$The Cisco DSLAM default is a terminal screen that is 80 columns wide. If you have a width other than that, use the terminal width command to provide the correct width of your terminal.
Use line wrapping together with the command history feature to recall and modify previous complex command entries.
Deleting Entries
Use any of these keystrokes to delete command entries if you make a mistake or change your mind:
Scrolling Down a Line or a Screen
When you use the help facility to list the commands available in a particular mode, the list is often longer than the terminal screen can display. In such cases, a More prompt appears at the bottom of the screen. To respond to the More prompt, use these keystrokes:
Press Return.
Scroll down one line.
Press Space.
Scroll down one screen.
Press Esc.
Stop scrolling and return to the main prompt.
Redisplaying the Current Command Line
If you enter a command and a message appears on your screen, you can easily recall your current command line entry. To do so, use these keystrokes:
Transposing Mistyped Characters
If you have mistyped a command entry, you can transpose the mistyped characters by using these keystrokes:
Press Ctrl-T.
Transpose the character to the left of the cursor and the character located at the cursor.
Controlling Capitalization
You can capitalize a word, set a word to lowercase, or capitalize a set of letters with these keystrokes:
Press Esc C.
Capitalize at the cursor.
Press Esc L.
Change the word at the cursor to lowercase.
Press Esc U.
Capitalize letters from the cursor to the end of the word.
Designating a Keystroke as a Command Entry
To use a particular keystroke as an executable command, insert a system code:
Press Ctrl-V or Esc Q.
Insert a code to indicate to the system that it should treat the following keystroke as a command entry, not an editing key.
Disabling Enhanced Editing Mode
To disable enhanced editing mode and revert to the normal editing mode, use this command in privileged EXEC mode:
If you have prebuilt scripts that do not interact well when enhanced editing is enabled, you can disable enhanced editing mode. To reenable enhanced editing mode, use the terminal editing command.
Ending a Session
After you use the setup command or other configuration command, exit the Cisco DSLAM and quit the session.
To end a session, use this EXEC command:
Posted: Mon May 10 22:10:55 PDT 2004
All contents are Copyright © 1992--2004 Cisco Systems, Inc. All rights reserved.
Important Notices and Privacy Statement.
