Cisco Systems C819GUK9, C819HG4GVK9 manual Understanding Command Modes

Appendix A Cisco IOS Software Basic Skills

Understanding Command Modes

Table A-1	Types of Terminal Emulation Software
PC Operating System		Terminal Emulation Software
Windows 95, Windows 98, Windows 2000,		HyperTerm (included with Windows software),
Windows NT, Windows XP		ProComm Plus
Windows 3.1		Terminal (included with Windows software)
Macintosh		ProComm, VersaTerm

You can use the terminal emulation software to change settings for the router that is connected to the PC. 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 the “ROM Monitor” section on page C-1. To change the router flow control setting, use the flowcontrol command in global configuration mode.

For information on how to enter global configuration mode so that you can configure your router, see the “Entering Global Configuration Mode” section on page A-5.

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

Table A-2lists the command modes that are used in this guide, describes how to access each mode, shows the prompt for each mode, and explains how to exit to a mode or enter another 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 Release 12.3 documentation set.

Cisco 819 Integrated Services Routers Software Configuration Guide

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