Information Technology Reference
In-Depth Information
Figure25-1 PasswordRecovery:PlatformsRunningCurrentCiscoIOSReleasesandRecentSoftware
Releases
Lost
password
Cisco 2000, 2500, 3000,
4000 series; Cisco 7000
series running Software
Release 9.17(4) or later
(Flash/netboot) or Cisco IOS
Release 10.0 or later (ROM);
Cisco IGS running Software
Release 9.1 or later
Issue the
break
key
sequence
within 60
seconds
Enter
e/s 2000002
at the ROM
monitor(
>
) prompt
(does not apply
to Cisco 7000)
Record the
output value.
(For example,
2102
)
. This is
the software
configuration
register.
Power-cycle
the r
o
uter
Platform?
Cisco CGS, MGS, AGS, AGS+
running Software Release 9.1(7)
or later; Cisco 7000 series running
Software Releases 9.17(4) through
9.21 from ROM
Enter
q
to
return to the
(
>
) prompt
Enter
o/r 0x42
at the (
>
) prompt
(or
o/r 0x41
for
Cisco 2500)
Enter
i
at the (
>
)
prompt
If necessary,
reinsert the
processor
card into the
router chassis
If necessary,
remove the
processor
card from the
router
Move the
hardware
configuration
register jumper
to bit
position 6
Answer
no
to
all the Setup
questions
Power down
the r
o
uter
Power up
the router
Enter the
enable
command at the
Router>
prompt
Enter the
show
startup-config
or
show
configuration
command
Enter the
configure
memory
command
Configure
your new login
and/or enable
password(s)
Enter the
configure
terminal
command
Ye
s
Encrypted
Password?
No
Exit
configuration
mode by
entering
Z
Locate and
record the
forgotten login
and/or enable
password(s)
Cisco 2000, 2500, 3000, 4000
series; Cisco 7000 series running
Software Release 9.17(4) or
later (Flash/netboot) or Cisco IOS
Release 10.0 or later (ROM);
Cisco IGS running Software
Release 9.1 or later
Enter the
copy running
startup
or
write memory
command
Router is
now functioning
normally....
Enter the
conf
i
gure
terminal
command
Enter the
config-register
command using
the configuration
register value
recorded earlier
(config-register 2102)
Restore the
configuration
register
Enter the
reload
command or
power-cycle the
router
Exit
configuration
mode by
entering
Z
Platform?
Return the
config
u
ration
register jumper
to its original
position. Remove
the processor
card if necessary
Cisco CGS, MGS, AGS, AGS+
running Software Release 9.1(7)
or later; Cisco 7000 series running
Software Releases 9.17(4) through
9.21 from ROM
Power down
the router
Power up
the router
Password
recovery
complete
The next procedure describes the password-recovery process for the following platforms only:
Cisco 2000, Cisco 2500, Cisco 3000, and Cisco 4000 series routers
•
Cisco 7000 series routers running Software Release 9.17(4) or later (Flash memory or netboot) or
Cisco IOS Release 10.0 or later from ROM
•
Cisco IGS Running Software Release 9.1 or later
•
