Wednesday, May 7, 2008

Extract a file or copy a folder from TFTP to flash

Sometimes you need to copy a bunch of files or a folder or maybe extract an archive file to a Cisco device. For instance, you need to upgrade the IOS of your Cisco Catalyst Switch or Cisco Aironet Access Points. If you need to upgrade to a newer IOS, usually Cisco provides an archived IOS.
For example, a 1200 Aironet IOS image will be available like this in c1200-k9w7-tar.123-8.JA2.tar.
That is a bit different compared to a Cisco Router image that used to be a *.bin file.

If you extract the
c1200-k9w7-tar.123-8.JA2.tar file, then you will have the image with a name like this: c1200-k9w7-mx.123-8.JA2, with another couple of files.
You will need to copy all these files into your Access Point.

So how to copy the the image to the Access Point?
Do we need to copy it one by one from tftp using "copy tftp flash" command?
The answer is no, that's where the "archive tar" command comes into play.

The example below, I extract a c1200-k9w7-tar.123-8.JA2.tar
file from my TFTP server ( to Cisco Aironet 's flash:
ap#archive tar /xtract tftp:// flash:
Loading c1200-k9w7-tar.123-8.JA2.tar from (via BVI1): !
extracting info (274 bytes)
c1200-k9w7-mx.123-8.JA2/ (directory) 0 (bytes)
c1200-k9w7-mx.123-8.JA2/html/ (directory) 0 (bytes)
c1200-k9w7-mx.123-8.JA2/html/level/ (directory) 0 (bytes)
c1200-k9w7-mx.123-8.JA2/html/level/1/ (directory) 0 (bytes)
extracting c1200-k9w7-mx.123-8.JA2/html/level/1/appsui.js (557 bytes)
extracting c1200-k9w7-mx.123-8.JA2/html/level/1/back.shtml (498 bytes)!
(output truncated)

c1200-k9w7-mx.123-8.JA2/html/level/15/ap_contextmgr_scm_summary.shtml.gz (5559 bytes)!

extracting c1200-k9w7-mx.123-8.JA2/c1200-k9w7-mx.123-8.JA2 (3654874 bytes)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
extracting c1200-k9w7-mx.123-8.JA2/5001.img (131328 bytes)!!!!!!!!!!!!!!!!!!!!!!!!!!
extracting c1200-k9w7-mx.123-8.JA2/5101.img (131328 bytes)!!!!!!!!!!!!!!!!!!!!!!!!!
extracting c1200-k9w7-mx.123-8.JA2/6301.img (131328 bytes)!!!!!!!!!!!!!!!!!!!!!!!!!!
extracting c1200-k9w7-mx.123-8.JA2/6701.img (131328 bytes)!!!!!!!!!!!!!!!!!!!!!!!!!!
extracting c1200-k9w7-mx.123-8.JA2/6701_cal.img (131328 bytes)!!!!!!!!!!!!!!!!!!!!!!!!!!
extracting c1200-k9w7-mx.123-8.JA2/info (274 bytes)
extracting info.ver (274 bytes)!
[OK - 5017600 bytes]
This is just a trick. To upgrade an IOS/image of a Cisco device, you can use the archive download-sw command or use the web GUI (for Cisco Aironet Access Point).


rlyna said...

*mumet bacanya* hehehe

tas50 said...

Very helpful. Thanks for the info.

Anonymous said...

Thank you

KEGer said...

Awesome!! Thanks for posting!!!

eprosenx said...

Thanks for the post. Cisco's documentation on this sucks as usual.

One thing to note: I just upgraded a Cisco AP 1200 and I had to do a "format flash:" first to make space (and this is a good way to clean the file system up as well). Just make sure your configuration is completely backed up elsewhere.


Anonymous said...

Thanks! Been looking for that for a long time...

Anonymous said...

Thanks a lot!!!!

Kenneth said...

If flash is not big enough for both tarball and the extracted content, you are kind of screwed. :-/

Anonymous said...

and to create a tar (to copy a folder to tftp or whatever):
archive tar /create whateverNameYouLike.tar NameOfFolderInFlash

Mark Bryan said...

This method works when you don't have enough flash for both the tarball and the extracted content.

It's all good!
I just did it, and I'm thrilled btw.