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New Member

Cisco 2611 loosing configuration after router restart


I have a router at a customer that looses its configuration after a restart.

I of course made a write mem, and it looks like this has been before.

Is there anything to check (hard/soft) befoire changing the router?

thanks in advance

Pierre Barrat


Re: Cisco 2611 loosing configuration after router restart

Check to see the configuration register value. You can do that by issuing the command 'show version'. At the bottom of the output of the command you will see the config-register value. Under normal circumstances this value should be 0x2102. If you see something like 0x2142 it means that the router is going to ignore the start-up configuration.

If the config-register value is indeed incorrect then you need to change it to 0x2102 by:

Router# copy start run

Router# config t

Router(config)# config-register 0x2102

Router(config)# exit

Router# wr mem

Router# reload

After the reload it should come up with the right config; that is if the problem was indeed with the configuration register.

New Member

Re: Cisco 2611 loosing configuration after router restart

I have more information.

AFter making "dir NVRAM:" I see my configuration, so I guess it is just that I can not load it after start up.

Pierre Barrat


Re: Cisco 2611 loosing configuration after router restart

atif.awan is correct with his response. Your configuration register is probably set to 0x2142 which tells the router to ignore the saved config when it boots. You will be able to see the config text file in your flash system as everytime you save, it really is saving, its just the config register telling it to be ignored. Set the register to 0x2102 and then reload. This should solve your issue.

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