Cisco 2960 Stacked Switch Upgrade Issues

[mygsp06]

Hi All,

Ive started an upgrade program of C2960 (X/XR) switches but recently faced an issue where some / most STACKED switches fail to take the new image 152.7.(E7) and instead revert back to a historical image left in flash, presumably the first .bin file the switch finds after reloading.

All of the single chassis switches upgrade without issue, it just seems to be STACKED switches. Another detail regarding the issue is  some members in a STACK will take the target image but others don't causing a version mismatch reported by the switch.

The image being used is taken from the same TFTP server, all images are checked and verified after transfer, the  boot statements for all switch members are present and correct and the image is present in flash for all members.

Any thoughts / similar experience?

[Leo Laohoo]

Did the "upgrade" use the TAR file?  

Or was the "upgrade" was copying-the-BIN-file-to-each-switch-member, change the boot variable string and pray?

[mygsp06]

.bin to each member, boot variable changed and prayed!

[Flavio Miranda]

hahahhiahaiahiahaih!!!

  Very important!

[Leo Laohoo · Accepted solution]

(+1 for your sense of humour.)

Ok, let's do this the easy way.  

First step, download the TAR file.  

Last step, use the following command: 

archive download-sw /overwrite tftp://<TFTP_IP_ADDRESS>/filename.tar

Now let me explain what that one line can do: 

1. Extract/Unpack the BIN file from the TAR file and distribute the BIN file to all the switch members
2. Extract/Unpack the HTML file from the TAR file and distribute the HTML files to all the switch members.  (If you do not want the HTML files, use the option "/image-only".)
3. Change the boot variable string
4. Check every BIN file and confirm it is not corrupt.
5. Prayer not needed.