Intel 480T, User Manual

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C H A P T E R 1 8 Software Upgrade and Boot Options
To access the BootROM menu, follow these steps:
1 Attach a serial cable to the console port of the switch, as
described in Chapter 3, Accessing the Switch.
2 Attach the other end of the serial cable to a properly config-
ured terminal or terminal emulator, power cycle the switch
while depressing the spacebar on the keyboard of the terminal.
As soon as the
BootROM->
prompt appears, release the
spacebar. You can see a simple help menu by pressing
h
.
Options in the menu include:
- Selecting the image to boot from
- Booting to factory default configuration
- Performing a serial download of an image
For example, to change the image that the switch boots from in flash
memory, press
1
for the image stored in primary or
2
for the image
stored in secondary. Then, press the
f
key to boot from newly
selected on-board flash memory.
To boot to factory default configuration, press the
d
key for default
and the
f
key to boot from the configured on-board flash.
To perform a serial download, you can optionally change the baud
rate to 38.4K using the
b
command, and then pressing the
s
key to
prepare the switch for an image to be sent from your terminal using
the XMODEM protocol. After this has completed, select the
g
command, to boot the image that is currently in RAM. The switch
restores the console port to 9600 bps, and begins the boot process.
Note Doing a serial download does not store an image into
flash, it only allows the switch to boot an operational
image so that a normal TFTP upgrade from CLI can then
be performed.
Boot Option Commands
Table 77 lists the CLI commands associated with switch boot
options.