Replacing Or Recovering A Lost Password; Overview Of The Password Recovery Procedure - Cisco ASR 1013 Hardware Installation Manual

Troubleshooting Initial Startup Problems
Symptom
Autoboot has been enabled by using the
config-register 0x2102 command. The
following error message is displayed when
the router restarts automatically:
no valid BOOT image found
Final autoboot attempt from default
boot device...
Located l2tp_rmcd_alg
Image size 10271 inode num 12, bks
cnt 3 blk size 8*512
#
Boot image size = 10271 (0x281f)
bytes
.
.
.
Boot image size = 11262 (0x2bfe)
bytes
Unknown image structure
Located test
Image size 11506 inode num 63, bks
cnt 3 blk size 8*512

Replacing or Recovering a Lost Password

This section describes how to recover a lost enable or console login password, and how to replace a lost enable
secret password on your Cisco ASR 1000 Series Router.
It is possible to recover the enable or console login password. The enable secret password is encrypted,
Note
however, and must be replaced with a new enable secret password.

Overview of the Password Recovery Procedure

Following is an overview of the steps in the password recovery procedure:
Cause
The boot system command has not been
configured by running a command similar
to the following example:
boot system
b o o t f l a s h : a s r 1 0 0 0 r p 1 - i p b a s e k 9 . 0 3 . 0 5 . 0 1 . S . 1 5 2 - 1 . S 1 . b i n
Cisco ASR 1000 Series Router Hardware Installation Guide
Replacing or Recovering a Lost Password
Corrective Action
rommon >
IP_SUBNET_MASK=255.255.255.0
TFTP_SERVER=192.0.2.2
T F T P _ F I L E = a s r 1 0 0 0 r p 1 - i p b a s e k 9 . 0 3 . 0 5 . 0 1 . S . 1 5 2 - 1 . S 1 . b i n
DEFAULT_GATEWAY=192.0.2.1
IP_ADDRESS=192.0.2.26
rommon > boot tftp:
Perform the following steps:
1 Press the Break key, or run the break
command from the console terminal. If
Break is enabled, the router enters the
rommon mode. Proceed to the last step.
If Break is disabled, power cycle the
router (turn the router off or unplug the
power cord, and then restore power
after waiting for 30 seconds).
2 Within 30 seconds of restoring power
to the router, press the Break key or run
the break command. This action causes
the router to enter the rommon mode
and display the rommon prompt.
3 Install a previously working version of
the image from bootflash: or harddisk:.
Alternatively, copy onto a USB stick
the image to which you want to upgrade
the router and then install that image
on the router.
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