Understanding Command Modes - ADTRAN AOS Version R10.1.0 Command Reference Manual

Command Reference Guide
Unit Boot Up
After configuring your PC (or VT100 terminal), plug the unit into the wall and turn on the power. The unit
begins the boot up process, which includes the following:
• The Power-On Self Test runs. This test checks the unit hardware for normal operation. The hard-
ware includes the central processing unit (CPU), the memory, and the interfaces.
• The Bootstrap Startup Program (factory set in the ROM) runs.
• The Bootstrap Startup Program is read by the unit to discover the proper source for the operating
system image.
• The operating system image is loaded into RAM.
• The configuration file saved in NVRAM is loaded into RAM, where it is accessed by the unit and
then executed one line at a time.
If no configuration file is found in NVRAM (there will not be one found on initial setup), you are
presented with the following prompt on your terminal or HyperTerminal screen:
Session Now Available
Press RETURN to get started
After pressing return, a prompt appears for communication with your unit.

Understanding Command Modes

As you begin communication, you should understand the command modes. Just as there are different
levels of commands in the CLI, there are different modes for commands within AOS itself. Each command
mode enables the user to access more commands, and make more changes in the unit's configuration.
The CLI has three command modes: Basic, Enable, and Global. The three command modes are organized
in a three-tiered hierarchy with Basic at the bottom, Enable in the middle, and Global at the top.
Basic Mode
Interaction with your unit begins at the Basic mode. The commands supported at this command tier are
limited, as is interaction with the unit itself. The Basic mode is to keep users without access to the higher
tiered commands from changing the preferred configurations of the unit. The following table describes the
Basic mode.
Mode Access By...
Basic Beginning an AOS session >
For more information on the Basic mode, please refer to
60000CRG0-35E
Mode Prompt
Basic Mode Command Set on page
Copyright © 2012 ADTRAN, Inc.
Understanding Command Modes
Accessible Commands
• Display system information
• Perform traceroute and ping
functions
• Open a Telnet session
36.
12