312
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.
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Страница 16: ...14 P R E F A C E...
Страница 88: ...86 C H A P T E R 4 Configuring Switch Ports...
Страница 112: ...110 C H A P T E R 5 Virtual LANs VLANs...
Страница 152: ...150 C H A P T E R 8 Quality of Service QoS...
Страница 166: ...164 C H A P T E R 9 Enterprise Standby Router Protocol...
Страница 198: ...196 C H A P T E R 1 0 IP Unicast Routing...
Страница 228: ...226 C H A P T E R 1 1 RIP and OSPF...
Страница 254: ...252 C H A P T E R 1 3 IPX Routing...
Страница 274: ...272 C H A P T E R 1 4 Access Policies...
Страница 296: ...294 C H A P T E R 1 6 Using Web Device Manager...
Страница 320: ...318 A P P E N D I X A...
Страница 328: ...326 A P P E N D I X B...
Страница 346: ...344 A P P E N D I X C...
Страница 358: ...356 I N D E X...
Страница 366: ...364 I N D E X...