Cisco has delibrately created an avenue for network engineers/administrators to recover devices whose passwords have been forgotten, provided such engineers/administrators have physical access to the devices whose passwords are to be recovered. The following steps will help network administrators perform Cisco perorm Cisco password recovery a Cisco router.
1. Connect to the router through the terminal via the console.
2. Power off and On the router. As soon as it starts loading the ios, press the key combination (CTRL+Break). This takes you to rommon
3. Type confreg 0x2142
4. Type reset
5. Type no. Go to privilege mode and copy the start-up configuration to running-configuration.
6. Go to the global config mode and change the passwords to what you can remember
7 Change the configuration register back to 0x2102
8. Save and reload the router. Now you can login with the new passwords.
Find below the procedure as implemented on a cisco router.
Digitally Signed Release Software program load complete, entry point: 0x81000000, size: 0x3bcd3d8 Self decompressing the image :
########################
monitor: command “boot” aborted due to user interrupt
rommon 1 > confreg 0x2142
rommon 2 > reset
— System Configuration Dialog —
Continue with configuration dialog? [yes/no]: n
You may also like: How to perform password recovery on a Cisco switch
Press RETURN to get started!
Router>en
Router#copy start run
Cisco#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Ciscor(config)#enable secret cisco
Cisco(config)#line con 0
Cisco(config-line)#pass cisco
Cisco(config-line)#login
Cisco(config-line)#exit
Cisco(config)#config-reg 0x2102
Cisco(config)#copy run start
Cisco#
%SYS-5-CONFIG_I: Configured from console by console
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