BY Pass Password Router

The process that we want here is to bypass booting from NVRAM so we'll configuration bits are bits where bits 0 to 9 shows the boot process with NVRAM and bit 1 shows the bypass NVRAM as indicated by the table above. Cisco router password recovery process is bypassing this process NVRAM. This can be done as follows:

    * Shut down and restart and quickly pressing Ctrl + break

*** System received an abort due to Break Key ***

signal = 0 × 3, code = 0 × 500, context = 0 × 813ac158

PC = 0 × 802d0b60, Vector = 0 × 500, SP = 0 × 80006030

rommon 1>

    * Move memory allocation to the allocation of the other with the command: confreg 0 × 2142 (where the default router memory allocation is 0 × 2102)

rommon 1> confreg 0 × 2142

    * Type "reset" and press "Enter"

You must reset or power cycle for new config to take effect

rommon 2> reset

System Bootstrap, Version 11.3 (2) XA4, RELEASE SOFTWARE (fc1)

Copyright (c) 1999 by cisco Systems, Inc..

TAC: Home: SW: IOS: Specials for info

C2600 platform with 32768 Kbytes of main memory

program load complete, entry point: 0 × 80008000, size: 0 × 6fdb4c

Self decompressing the image: # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # [OK]

    * After loading back and go to "System Configutation Mode" type "No" and press "Enter"

- System Configuration Dialog -

Would you like to enter the initial configuration dialog? [Yes / no]: n

Press RETURN to get started!

00:00:19:% LINK-3-UPDOWN: Interface BRI0 / 0, changed state to up

00:00:19:% LINK-3-UPDOWN: Interface Ethernet0 / 0, changed state to up

00:00:19:% LINK-3-UPDOWN: Interface Ethernet0 / 1, changed state to up

    * Go to Priviledge mode by typing "enable" or "en"

Router> enable

Router #

    * Copy configuration from NVRAM to RAM with the command

Router # copy startup-config running-config

    * To see the configuration can use the command "show run"

Router # show run

    * Type the command "configure terminal" or "config t"

Router # configure terminal

Router (config) #

    * Add the username and the new user: cisco, password: secret

Router (config) # username cisco password cisco

Router (config) # enable secret secret

Router (config) # exit

Router #

    * Copy configuration from RAM into NVRAM

Router # copy running-config startup-config

    * Restore position memory allocation to 0 × 2102

Router # configure terminal

Router (config) # confreg-register 0 × 2102

    * Wait for the process and reload to view the results.
    * You can login with user: cisco and password: secret