How to Backup the firmware, the configuration and perform IOS Upgrading IOS of Cisco1921/K9

[s8709251h]

Hi all experts,

It is my first time to backup and upgrading a router, i have no idea how should i start and what i should take note of before perform upgrading.

Please kindly advice me on this. Thank you very much. =)

Best regards to all,

william

[InayathUlla Sharieff · Accepted solution]

Chew,

Link to upgrade the firmware: http://www.cisco.com/en/US/docs/routers/access/1900/software/configuration/guide/upgrade.html

1- when upgrading the IOS, the configuration is preserved. You do not need to take any specific precautions - you simply store the new IOS file into the FLASH and configure your router to load it (using the boot system global configuration command). Optionally, you just erase the old IOS image and let the router boot the only IOS image it finds in the FLASH, in this case, the new one. Of course, making a backup of your running-config to a network server would be a wise precaution but once again, upgrading the IOS on Cisco devices does not affect the stored configuration.

2- I suppose you have the new IOS image available already. The 1921 router has an USB socket - one of the easiest ways to transfer the IOS into the FLASH memory of your router is to copy it to an USB key on your PC and then copy it from USB to FLASH on your router. The USB key would need to be formatted using either FAT16 or FAT32. Specifically, the router will not be able to read NTFS filesystem.

Another option would be to copy it via network using HTTP, SFTP or FTP you have such servers available and the router is capable of communicating with these servers over network. In both cases, the copy command is:

copy source destination

so in your case, either

copy usb:c1921-whatever.bin flash:

or

copy http://1.2.3.4/c1921-whatever.bin flash:

assuming the IOS is available via HTTP on the server 1.2.3.4. Please make sure beforehand using dir flash: that your FLASH has enough free space to hold both IOSes.

Ref:https://supportforums.cisco.com/thread/2188791

HTH

Regards

Inayath

*Plz rate if this info is helpfull and mark the thread as answered if this solved your query.

[s8709251h]

Hi InayathUlla Sharieff,

Thank you for your advice i will check out the link.

Appreciated. =))

Best regards,

William

[Leo Laohoo]

In addition to Inayath's post ...

1.  Make sure you check or compare the MD5 hash values of the IOS before you transfer into your router.   A valid MD5 hash value means that the file is not corrupt.

2.  You don't need to take a "backup" copy of the IOS.  Just download it from the Cisco website.

3.  You're going to upgrade the firmware?  While you are at it, upgrade the router's ROMmon too. If you are smart with it, you can upgrade the ROMmon and the IOS in just one reboot. 

[s8709251h]

Hi Leo LaoHoo,

Noted.

Thank you very much. =))

Best regards,

william

[Leo Laohoo]

Thanks for the ratings, William.