CCNA Network Technology Lab Manual: vro password recovery

[Lab environment]

Cisco Packet Tracer 5.3.2

[PURPOSE]

Do not describe the basic commands of Cisco IOS too much. Focus on learning Common Cisco IOS skills to improve the efficiency of subsequent experiments.

[Experiment topology]

Lab procedure]

1. Connect the device to the vro using the Console line according to the topology.

2. Turn off the router power (figure shows the power position of the simulator. The real machine is usually behind the device)

3. Turn on the vro power, and press "Ctrl" + "Break" in the Super Terminal within 30 s (Break in the upper right corner of the keyboard, three side-by-side keys, the rightmost one) to enter the rommon mode.

Program load complete, entry point: 0x8000f000, size: 0xd49718
Self decompressing the image :############################
Monitor: command "boot" aborted due to user interrupt
Rommon 1>

4. Use the confreg command to change the value of the configuration register to "0x2142"

Rommon 1> confreg 2142
You must reset or power cycle for new config to take effect

5. Use the reset command to reload IOS

Rommon 2> reset

6. At this time, the vro will bypass the startup configuration file and enter the Setup Mode.

7. Go to privileged mode and change the privileged Password

Router> en
Router # conf t
Router (config) # enable secret slyar
Router (config) # end

8. The configuration register value is 0x2102.

Machine (config) # config-register 0x2102
Router (config) # end

9. Save the configuration file

Router # wr
Building configuration...