Router boot error

[mlomairy]

I get the following message when i boot my 2520 router:

%SYS-4-CONFIG_NEWER: Configurations from version 12.2 may not be correctly understood.
F3: 14575224+958356+908196 at 0x3000060

What does it mean and how can i fix it?

Regarsa

 

[baddos]

Maybe try a "write erase" then a "reload". This will erase the startup-config and will have the router reboot with a blank config.

 

[mlomairy]

Thanks, it's gone.

 

[jslaven]

I am getting the same error on a Cisco 2507. I forgot my enable password. I rebooted the router and pressed Break before 60 seconds to reload the software but pressing Break is not being recongnized. At the prompt (>), I type write erase but that isn't being recognized either. What can I do to get back into the router and reconfigure it?

Jeff

 

[jimmyzz]

Jeff,
If you are getting the prompt> then you did issue the break command successfully and now you are in ROMMON mode. You won't be able to use your usual cisco IOS commands in this mode. To perform the password recovery from rommon:

1. >o/r 0x2142 (sets the config register to bypass startup config)
2. >i (initalises router and reloads it)

The router will reload and come up as a clean router. Bypass the setup process as required.

3. Router> en (the enable password will be blank now)
4. Router> copy star run (copy the startup config back into running memory)
5. Router> config t
6. Router(config)> enable secret <new password>
7. Router(config)> config-register 0x2102 (reset normal boot mode)
8. Exit config mode and save your running config to startup and reload the router.

Step 4 is important if you want to keep your old startup config. Otherwise if you skip this step, your router will be &quot;reset&quot; as a blank router.

JimmyZ