two configuration in a router

[Madhan Kumar]

Hi All,

I have a requirement. One of my customer wants to keep two configuration file in the router and whenever he wants he may switch the configuration file.

Is it possible?. If so kindly let me know the details.

Thanks & Regards

R.MADHANKUMAR

Hyderabad.

[mtsb]

Hi Madhan,

Usually I save multiple config files in the flash disk of my router.

Whenever I need to change the config I will do a write erase and reload

the router without literally empty configs. Then copy from flash to

running config. I hope you know this. If the requirement is not to

reload the router but to switch configs on fly I am not sure. May be

others in this forum might know.

Thanks,

Madhu

[milan.kulik · Accepted solution]

Hi,

you can either

a) copy a file to your startup config and reload the router

b) use the configure replace command, see

http://www.cisco.com/en/US/docs/ios/12_3t/12_3t7/feature/guide/gtrollbk.html

for details. Just be careful when replacing the running config, you might lose routing to the URL you are copying from, so IMHO the safest way is to keep the source file on your router flash memory (or to copy it there from your FTP/TFTP server before starting the replacement).

HTH,

Milan

[Madhan Kumar]

Thanks for both of you giving me valuable information.

Thanks & Regards

R.MADHANKUMAR

[mlund]

Hi

I saw Milan has pointed out an excellent example. Here is how I did this for a customer.

host#dir
Directory of disk2:/

    1  -rw-    24366316  Jan 11 2000 03:26:52 +01:00  c7200-is-mz.124-12.bin
    2  -rw-        3908   Apr 3 2008 14:06:52 +02:00  32out-confg
    3  -rw-        3882   Apr 3 2008 14:08:12 +02:00  16out-confg

host#more disk2:32out-confg
!
< removed>
!
username abc privilege 15 nopassword
username abc autocommand menu abc
!
< removed>
!
menu abc title ^CC

32M is running now

^C
menu abc prompt ^C

make a choice 
         
^C
menu abc text 1 16M
menu abc command 1 conf replace disk2:16out-confg
menu abc text 2 32M
menu abc command 2 conf replace disk2:32out-confg
menu abc text 3 show policy
menu abc command 3 show policy-map int g0/1.541
menu abc text 4 exit
menu abc command 4 exit
menu abc command 5 menu abc1
menu abc command 76 menu-exit
menu abc command 6 exit
menu abc command 7 exit
menu abc command 8 exit
menu abc command 10 exit
menu abc command 0 exit
menu abc default 5
menu abc line-mode
menu abc single-space
!
menu abc1 text 1 choose an alternativ between 1 and 4
menu abc1 command 1 menu-exit
menu abc1 command 2 menu-exit
menu abc1 command 3 menu-exit
menu abc1 command 4 menu-exit
menu abc1 default 1
!

/Mikael

Don't forget to have an valid config in startup-config otherwise router will not get online after a powerfailure.