can stackwise and stackwise plus technologies be stacked together ?

[Aashutosh Mahajan]

we have WS-C3750G-12S-E [c3750-ipservices-mz.122-35.SE5] and we are getting one C3750X,

Can these two switches be stacked together ?

would we have to upgrade or change the  firmware on WS-C3750G-12S-E ? if yes what should be it.

I already checked below links but not getting clear answer.

https://supportforums.cisco.com/discussion/11024151/mixing-catalyst-3750-and-3750x-switches-same-stack

Please advise,

Thanks,

Aashutosh

[Leo Laohoo]

Can these two switches be stacked together ?

Yes, the two can be stacked.  

would we have to upgrade or change the  firmware on WS-C3750G-12S-E ? if yes what should be it.

The current 3750G-12S needs to be upgraded to a version the 3750X can "understand" or support.  May I recommend IOS version 12.2(55)SE10?

[Joseph W. Doherty]

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Posting

As Leo noted, you should be able to stack the two.  However, did want to add that the 3570G-12S supports SDM templates unique to it, so you need to insure it uses a compatible SDM template.  Also, when you mix StackWise and StackWisePlus 3750s, the latter gives up most of its "Plus" features.  If possible, I recommend you don't mix StackWise and StackWisePlus units.