set
To set or display environment variables, use the set command in boot loader mode. Environment variables
can be used to control the boot loader or any other software running on the device.
set variable value
Syntax Description
Use one of the following keywords for variable and the appropriate value for value:
MANUAL_BOOT—Decides whether the device automatically or manually boots.
Valid values are 1/Yes and 0/No. If it is set to 0 or No, the boot loader attempts to automatically
boot the system. If it is set to anything else, you must manually boot the device from the boot
loader mode.
variable
value
BOOT filesystem:/file-url—Identifies a semicolon-separated list of executable files to try to
load and execute when automatically booting.
If the BOOT environment variable is not set, the system attempts to load and execute the first
executable image it can find by using a recursive, depth-first search through the flash: file
system. If the BOOT variable is set but the specified images cannot be loaded, the system
attempts to boot the first bootable file that it can find in the flash: file system.
ENABLE_BREAK—Allows the automatic boot process to be interrupted when the user
presses the Break key on the console.
Valid values are 1, Yes, On, 0, No, and Off. If set to 1, Yes, or On, you can interrupt the
automatic boot process by pressing the Break key on the console after the flash: file system
has initialized.
HELPER filesystem:/file-url—Identifies a semicolon-separated list of loadable files to
dynamically load during the boot loader initialization. Helper files extend or patch the
functionality of the boot loader.
PS1 prompt—Specifies a string that is used as the command-line prompt in boot loader mode.
CONFIG_FILE flash: /file-url—Specifies the filename that Cisco IOS uses to read and write
a nonvolatile copy of the system configuration.
BAUD rate—Specifies the number of bits per second (b/s) that is used for the baud rate for
the console. The Cisco IOS software inherits the baud rate setting from the boot loader and
continues to use this value unless the configuration file specifies another setting. The range is
from 0 to 128000 b/s. Valid values are 50, 75, 110, 150, 300, 600, 1200, 1800, 2000, 2400,
3600, 4800, 7200, 9600, 14400, 19200, 28800, 38400, 56000, 57600, 115200, and 128000.
The most commonly used values are 300, 1200, 2400, 9600, 19200, 57600, and 115200.
SWITCH_NUMBER stack-member-number—Changes the member number of a stack member.
SWITCH_PRIORITY priority-number—Changes the priority value of a stack member.
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
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set
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