Modifying The Supervisor Engine Startup Configuration; Understanding The Supervisor Engine Boot Configuration - Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual

Chapter 3 Configuring the Switch for the First Time
View or change the password, or erase the configuration.
Step 5
Reconfigure the switch to boot up and read the NVRAM as it normally does.
Step 6
Reboot the system.
Step 7
Password recovery requires the Break signal. You must be familiar with how your terminal or PC
Note
terminal emulator issues this signal. For example, in ProComm, the Alt-B keys generate the Break
signal. In a Windows terminal session, you press the Break or Ctrl and Break keys simultaneously.

Modifying the Supervisor Engine Startup Configuration

These sections describe how the startup configuration on the supervisor engine works and how to modify
the configuration register and BOOT variable:
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Understanding the Supervisor Engine Boot Configuration

These next sections describe how the boot configuration works on the supervisor engine.
Understanding the Supervisor Engine Boot Process
The supervisor engine boot process involves two software images: ROM monitor and supervisor engine
software. When the switch is powered up or reset, the ROM-monitor code is executed. Depending on the
NVRAM configuration, the supervisor engine either stays in ROM-monitor mode or loads the supervisor
engine software.
Two user-configurable parameters determine how the switch boots: the configuration register and the
BOOT environment variable. The configuration register is described in the
and Using the boot Command" section on page
the
Understanding the ROM Monitor
The ROM monitor executes upon power-up, reset, or when a fatal exception occurs. The switch enters
ROM-monitor mode if the switch does not find a valid software image, if the NVRAM configuration is
corrupted, or if the configuration register is set to enter ROM-monitor mode. From ROM-monitor mode,
you can manually load a software image from bootflash or a Flash PC card.
OL-11439-03
Understanding the Supervisor Engine Boot Configuration, page 3-19
Configuring the Software Configuration Register, page 3-20
Specifying the Startup System Image, page 3-23
Understanding Flash Memory, page 3-24
CONFIG_FILE Environment Variable, page 3-25
Controlling Environment Variables, page 3-25
"Specifying the Startup System Image" section on page
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
Modifying the Supervisor Engine Startup Configuration
3-21. The BOOT environment variable is described in
3-23.
"Modifying the Boot Field
3-19