3750E Stack IPBase to IP Services upgrade

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Jul 31st, 2008
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I have a stack of 3750E (2 switches) and need to upgrade the software image. I understand that I generate the licence file using the PUK code however i am wondering when i load the licence file will it unlock both the master and the slave in the stack? Do i have to break the stack and upgrade each switch individually?

any help rated



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Sebastian Helmer Sun, 08/03/2008 - 02:59
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Hey Gav,

No, I always Updated the master for example, he will copy the software automaticaly to the slave. The hole stack will restart and the new software is online.

These are my expericene.

best regards,


will.cullen Sun, 08/03/2008 - 04:06
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I've just done a few of these, you need 2 licences,if you still want your stack to run ipservices if the master fails. The license is tied to the serial number of the switch, you will need to copy the master license to flash: and slave license to flash2: then install by using the "licence install flash:filename" and "license install flash2:filename" commands. Confirm all is OK by using "show license detail" command then reboot to take effect.


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