Cisco Systems OL-6426-02 Benutzerhandbuch

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Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Appendix A      Cisco IOS Software Basic Skills
  Understanding Command Modes
You can use the terminal emulation software to change settings for the type of device that is connected 
to the PC, in this case a router. Configure the software to the following standard VT-100 emulation 
settings so that your PC can communicate with your router:
9600 baud
8 data bits
No parity
1 stop bit
No flow control
These settings should match the default settings of your router. To change the router baud, data bits, 
parity, or stop bits settings, you must reconfigure parameters in the ROM monitor. For more information, 
see 
 To change the router flow control setting, use the flowcontrol line 
configuration command.
For information on how to enter global configuration mode so that you can configure your router, see 
the 
 section later in this chapter.
Understanding Command Modes
This section describes the Cisco IOS command mode structure. Each command mode supports specific 
Cisco IOS commands. For example, you can use the interface type number command only from global 
configuration mode.
The following Cisco IOS command modes are hierarchical. When you begin a router session, you are in 
user EXEC mode.
User EXEC
Privileged EXEC
Global configuration
 lists the command modes that are used in this guide, how to access each mode, the prompt you 
see in that mode, and how to exit to a mode or enter the next mode. Because each mode configures 
different router elements, you might need to enter and exit modes frequently. You can see a list of 
available commands for a particular mode by entering a question mark (?) at the prompt. For a 
description of each command, including syntax, see the Cisco IOS 12.3 documentation set.