Cisco CCNA Packet Tracer Ultimate labs: Switch and Router Password Recovery. Answer Part 2
David Bombal
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Can you perform a password recovery and restore the device configurations?
Details of the Password Recovery Procedure Perform the following steps to recover or replace a lost enable, enable secret, or console login password:
Troubleshooting Guide for the Cisco 4000 Series Integrated Services Router: https://www.cisco.com/c/en/us/td/docs/routers/access/4400/troubleshooting/guide/isr4400trbl/isr4400trbl02.html
Catalyst 3560 Software Configuration Guide, Release 12.2(52)SE: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/3560scg/swtrbl.html#wp1021182
Transcription: So, on router 2, I don’t know what the password is. Once again, I need a physical access to the device, so I’m going to turn the power off and turn it back again and press CTRL C to break.
I’m in ROM monitor again, question mark enter, shows me options, help does something similar, confreg allows me to set the configuration register 2142 is what I’m going to set it to and then reset allows me to get the router to reboot.
Router is now rebooting and will hopefully reboot without a startup configuration applied. In other words the startup configuration installed is still there but as you can see here is not applied to the running configuration.
I’m going to bypass the initial configuration dialog. Again I can go to enable or privilege mode and use commands such as show run to see a default configuration.
Make sure that you go to privileged mode before you copy the startup configuration. Notice the startup configuration has the secret password set. We don’t know what that password is. We can see some other configuration on the router but note, I went from user mode to privilege or enable mode and now I can copy the startup configuration to the running configuration and apply it without knowing what the password is.
So show run now shows us that password, and shows us configuration of interfaces and EIGRP. I still don’t know what the secret password is but I can now simply type enable secret cisco to override the secret password. I’ll save the configuration.
What I still need to do however is enable interfaces that’s not done by default. So no shut the various interfaces on the router. I don’t actually need to no shut gigabit 0/0/1 down, that’s not part of the lab. So I’ll shut that again.
show ip interface brief there are our device IP addresses, interfaces are up
show ip protocols we ... https://www.youtube.com/watch?v=_NJZzCeh0DQ
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