To simplify the use of the command line, the interface supports automatic command completion. This function is activated when the command is incomplete and the <Tab> character is entered.
Another function that helps to use the command line is context help. At any stage of entering a command, you can get a prompt about the following command elements by entering <?> character.
To simplify the commands, the whole command system has a hierarchical structure. There are special branch commands for transition between levels of the hierarchy. This allows using brief commands on each level. To designate a current level where a user is located, the system prompt string changes dynamically.
Example
LTP-16N# LTP-16N# configure terminal // switch to the device configuration mode LTP-16N(configure)# LTP-16N(configure)# exit // return to the previous level LTP-16N#
The exit command is always used to return to the previous level. For convenience, you can also use common commands from the root block using the do prefix.
To set a default value or to disable a value, use the no prefix.
For the ease of command line use, shortcut keys listed in the Table 1 are supported.
Table 1 – Description of CLI shortcut keys
| Shortcut key | Description |
|---|---|
Ctrl+D | In a nested command mode – exit to the previous command mode (exit command), in a root command mode – exit from CLI |
Ctrl+A | Transition to the beginning of line |
Ctrl+E | Transition to the end of line |
Ctrl+U | Removal of characters to the left of a cursor |
Ctrl+K | Removal of characters to the right of a cursor |
Ctrl+C | Line clearing, command execution interruption |
Ctrl+W | Removal of a word to the left of a cursor |
Ctrl+L | Screen clearing |
For ease of reading, page-by-page output of a large of information is added.
Example
LTP-16N# show running-config all
configure terminal
interface pon-port 1
no shutdown
exit
interface pon-port 2
no shutdown
exit
interface pon-port 3
no shutdown
exit
interface pon-port 4
no shutdown
exit
interface pon-port 5
no shutdown
exit
interface gpon-port 6
no shutdown
exit
interface gpon-port 7
no shutdown
exit
interface pon-port 8
no shutdown
exit
(Enter:next line Space:next page Q:quit R:show the rest)
To disable page-by-page output, use the following command:
LTP-16N# terminal datadump
Command line interface enables user authorization and restricts access to commands depending on their privilege level, provided by the administrator.
All commands are distributed by preference groups, which can be assigned between preference levels as needed.
A required amount of users can be created in the system. The required privilege level is specified individually for each of them.
In factory configuration, the system includes one user with admin name and password password.