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Chapter 3 Command Line Interface
This chapter describes the basic commands to access the router through console interface or
telnet. Be noted if you want to login to ERT-805 through the telnet, then enable password
must be configure.
The user can input system command configuring system protocol by command line port. When
you first login a new router by terminal, the system will give a prompt router>. Now you are in
user mode. After typing the command "enable", the prompt will change to router#, and now you
are in privilege mode so that you could input more commands including some privilege
command. To enter the global configuration mode, you should type the command "configure
terminal" or "config T". Then the prompt will change to router(config)#, and you could input
global configuration commands configuring the parameter of the router. If you type the
command "interface serial 0/0" or "int s0/0",you will notice that the prompt change to
router(config-serial0/0)# and then you are in port configuration。
Prompt
Router>
Router#
Rouer(config)#
Rotuer(config-serial0/0)
In different configuration mode, the system will give different prompt, and every configuration
mode has its due commands collect. From the prompt you could know what configuration
mode you are in. The left most word of the prompt is the name of the router, from which you
can know that which router you are configuring. You can set the hostname of the router with
the hostname command as below:
router# config terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)# hostname ERT_805
ERT_805(config)# exit
ERT_805#
3.1 Help command
"?" and "Tab" keys are two help keys that help user to configure ERT-805. By using a "?" key in
different operate mode, the system will display the help message that tell user what command
they can use in different operate mode. For example:
Mode
Normal User mode
Enable mode for privilege operation
Configuration mode
Configuration mode of object control
Table for different configure mode
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