Cisco 3000 Series

Entering
the
Bootstrap
Program
Available
Bootstrap
Commands
Once in the
bootstrap mode
enter at the
prompt
to
display
list of available
commands and
options
as follows
Toggle
cache state
Server IP address
TFTP Server Name
Load and execute
system image from ROM or from TFTP server
Continue
address
/S
Deposit
value
of size
into location with modifier
/S Examine location with
size with modifier
Begin
execution
Help
for commands
Initialize
Displays
Stack
trace
Server IP address TFTP Server
Name
Load
system image from RDM or from TFTP
server
but do not
begin
execution
Show software
configuration register option settings
Set break
point
Single step next instruction
function
Test device for
help
Deposit
and Examine sizes
may
be
byte long or short
Modifiers
may
be
register or
byte swap
Register names are DO-D7
AO-A7
SS US SR
and
PC
The
following system bootstrap
commands
are
among
the
most
useful
BootThe
command with no
argument
reboots the
system
and boots the default
software from
ROM
as
defined
by
the
lower four bits of the
configuration register
which form the
boot
field
You
can
include
an
argument filename
to
specify
file
to
be booted
over
the
network
using
the
Trivial File
Transfer Protocol
TFTP
You
can
also include second
argument
host
which is
the
Internet
address
or name of
particular server
host
You must enter and
press
Return before
entering
The
various forms of the command
follow
bboots
the default
system
software from ROM
filename
using
TFTP
flashboots the first file in Flash
memory
flash
Ifilenamelboots
the file
filename
from
Flash
memory
To
prevent
the router from
automatically netbooting
enter the olr OxO command
as
follows
o/r OxO
ContinueThe command allows
you
to exit the
bootstrap
mode without
rebooting
the router
after
you press
the Break
key
while
running
the
system
software
image
HelpThe
command
prints
summary
of the
bootstrap
commands to the console screen.This
is the
same
output
as
entering
InitializeThe command
causes
the
bootstrap
program
to reinitialize the
hardware
clear the
contents of
memory
and boot the
system
if so directed
by
the boot field in the virtual
configuration register It
is best
to use the command before
running any
tests
or
booting
software
Display
Stack TraceThe
command
displays
stack trace of the last
running system
software
This will be useful
as
diagnostic reading
in the event of
problem
such
as an
unexpected system
crash
C-2 Cisco 3000 Hardware Installation
and Maintenance