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Cisco 1720 router not saving configuration

                  I currently am trying to program the config for a 1720 router however i cannot get the config to stick. I boot up to the command prompt put in all the configurations use the "write mem" command and then hard reset the router but when it boots back up I get the initial system configuation dialog.

I have tried booting to the rommon prompt and typing "confreg" and following the prompts keeping all options set to no except for  this setting

"enable "ignore system config info"? y/n [n]: Y"

Is set to yes. but when i get to the end of the config it just loops and starts over with

"you wish to change the configuration? y/n [n]: Y"

If i choose yes it loops if I choose no it goes back to the rommon prompt. Am i doing something wrong?

Everyone's tags (5)
1 ACCEPTED SOLUTION

Accepted Solutions
Purple

Cisco 1720 router not saving configuration

Hi,

reconfigure the router and use as first command:

-enable

-conf t

- config-register 0x2102

- do wr

-do reload

You should have solved your problem and then you can finish configuration and write to startup-config.

Regards.

Alain

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5 REPLIES
New Member

Cisco 1720 router not saving configuration

here is the current system  config

    Configuration Summary

enabled are:

ignore system config info

console baud: 9600

boot: image specified by the boot system commands

      or default to: cisco2-C1700

    Configuration Summary

enabled are:

ignore system config info

console baud: 9600

boot: image specified by the boot system commands

      or default to: cisco2-C1700

Hall of Fame Super Gold

Cisco 1720 router not saving configuration

Check your config register using the command "sh version".  The correct setting should be 0x2102.

New Member

Cisco 1720 router not saving configuration

I used the "sh version" command at the bottom I get this

Configuration register is 0x142

Purple

Cisco 1720 router not saving configuration

Hi,

reconfigure the router and use as first command:

-enable

-conf t

- config-register 0x2102

- do wr

-do reload

You should have solved your problem and then you can finish configuration and write to startup-config.

Regards.

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.
New Member

Cisco 1720 router not saving configuration

Input from your commands.

Router>en
Router#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#config-register 0x2102
Router(config)#do wr
                  ^
% Invalid input detected at '^' marker.

Router(config)#do reload
                  ^
% Invalid input detected at '^' marker.

Router(config)#

After that I input my base settings for the router reset the router and it seems that my settings have stuck. Thank you so much for your help!!!

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