Upgrade Cisco 3750 Stack Configuration

This is a very short help how to Upgrade the IOS on a 3750 Switch Stack. For more details please refer to the official Cisco documentation. As this doc is made for my self, don’t use this in your production environment without knowing what you are doing.

1. Verify there is enough space left on the Flashs of the different stack members:
   dir all
2. If there is not enough room to store another IOS because you kept a few older versions delete them with:
   delete /force /recursive flash:c3750-ipbase-mz.122-35.SE5
3. Now start the upgrade:
   archive download-sw /image tftp://server/c3750-ipbase-tar.122-52.SE.tar
4. After the installation went thru without errors check if both members are ready:
   show switch details