Virtual
Configuration
Register
Settings
Step
At
the
privileged
level
system
prompt
router
enter
the
command
configure
terminal
You
will
be
prompted
as
shown
in
the following
example
router
configure
term
Enter
configuration
commands
one
per
line
Edit
with
DELETE
CTRL/W
and
CTRL/LJ
end
with
CTRL/Z
Step
To
set
the
contents
of
the
configuration
register
enter
the config-register
value
configuration
command
where
value
is
hexadecimal
number
preceded
by Ox
see
Table
B-i
as
follows
config-register
Oxvalue
The
virtual
configuration
register
is
stored
in
nonvolatile
memory
Step
Exit the configuration
mode
by
entering
Ctrl-Z
The
new
value
settings
will
be
saved
to
memory
however
the
new
settings
do
not take
effect
until
the
system
software
is
reloaded
by
rebooting
the
router
Step
To
display
the configuration
register
value
currently
in effect
and
the value
that
will
be used
at
the next reload
enter
the
show
version
EXEC
command
The
value
will
be displayed
on
the
last
line
of the screen
display
as
in
the
example
following
Configuration
register
is
0x142
will
be
0x102
at
next
reload
Step
Reboot
the
router
The
new
value
takes
effect
Configuration
register
changes
take
effect
only
when
the server
restarts
such
as
when
you
switch
the
power
off and
on
or
when
you
issue
reload
command
from
the
console
Boot
Field
The
lowest
four
bits
of
the
processor
configuration
register
bits
and
form
the
boot field
See
Table
B-2
The
boot
field
specifies
number
in
binary
If
you
set
the boot
field
value
toO
you
must
boot
the operating
system
manually by
entering
the
command
at
the bootstrap
prompt
as
follows
flash
filename
Definitions
of
the
various
command
options
follow
bBoots
the
default
system
software
from
ROM
flashBoots
the
first file
in
Flash
memory
filename
using
TFTP
flash
the
file
filename
from
Flash
memory
For more
information
about
the
flash filename
command
see the router
products
software
documentation
If
you
set
the boot
field
value
to
value
of
through
and
there
is
valid system
boot
command
stored
in
the configuration
file
the router
boots
the
system
software
as
directed
by
that
value
See
Table
B-3
If
you
set
the boot
field
to
any
other
bit
pattern
the router uses the
resulting
number
to
form
default
boot
filename
for netbooting
Virtual
Configuration
Register
8-3
Summary of Contents for CRM3
Page 1: ...ems en SYsTEM ...
Page 7: ...vi CRM3 Hardware Installation and Maintenance ...
Page 11: ...CRM3 Hardware Installation and Maintenance ...
Page 17: ...System Specifications 1 4 CRM3 Hardware Installation and Maintenance ...
Page 35: ...Inspecting the System 2 18 CRM3 Hardware Installation and Maintenance ...
Page 57: ...Bootstrap Program 4 14 CRM3 Hardware Installation and Maintenance ...
Page 67: ...Recovering Lost Password 5 10 CRM3 Hardware Installation and Maintenance ...
Page 87: ...Virtual Configuration Register Settings B fl CRM3 Hardware Installation and Maintenance ...