Cisco 3750X/3750G stack upgrade

Here's the command to upgrade a Cisco Switch stack that is mixed with 3750X switches and 3750G switches:

switch#archive download-sw /allow-feature-upgrade /overwrite 

tftp://<address>/c3750e-universalk9-tar.122-55.SE.tar 

tftp://<address>/c3750-ipservicesk9-tar.122-55.SE.tar

The /allow-feature-upgrade allows you to bypass the new sanity check from 

Cisco if you're trying to change from ipbase to ipservices.

NOTE:  The universal IOS won't work on the 3750Gs 

Get the Serial Number on a Cisco Callmanager

Login to the callmanager via ssh and run the following command to get the serial number of the Callmanager:

utils snmp walk 2c community127.0.0.1 .1.3.6.1.4.1.232.2.2.2.1.0

Make sure to replace community with the proper snmp community string