Mixed stack made of X460-G2-48t-10GE4 and X440-24x-20G

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Can I form stack using two X460-G2-48t-10GE4 units and two X440-24x-10G ?
I have 2 VIM-2ss cards in X460 units and total of 8 SR SFP+ modules. I would like to use 2 VIM cards + 1 cable and 6 pcs. of SR SFP+ modules as alternate 10G stack-v ports to form a ring.
This equipment is already bought and there is no real chance to replace the hardware (unless it's faulty, of course).
Did anyone make such a stack (or similar) working ?
I know that theoretically this can be possible, but can anyone confirm ?

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Robert Zdzieblo

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Posted 1 year ago

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Patrick Voss, Employee

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Hello Robert,

I have not set this up myself. If you want you can check this out in our stacking tool. It lets you simulate building a physical stack and will let you know if there are any caveats:


Paired up with this document explaining how to use it:


You should be able to find what you are looking for.

Please feel free to reach out if you have any questions.
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Paul Russo, Alum

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Hello Robert

This is explained in the SummitFamily_HW_install guide that you can download from our website here http://documentation.extremenetworks.com/summit/Summit_Family_HW_Install/Switch_ovrvu/summit-family-...

there is a section about building stacks and provides examples using stacking ports and Alternate ports.

Hope this helps

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Robert Zdzieblo

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Hello Patrick and Paul,
Thank you for info about StakingTool - this tool confirmed that it is possible to build the stack using switches I mentioned.

In fact, I was able to build such a stack "in real life" today with properly elected X460G2 nodes as master and backup and X440 nodes as standby. The only difference is that I was using exos image on all nodes - StackingTool says 16.1 is the max. hardware supported version (?), I guess this needs updating. Stack didn't come up automatically, I have to make some extra configuration steps manually, but then I got full ring topology.
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Drew C., Community Manager

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Hi Robert, I cleaned up the replies here, per your request.
I'll also pass your note about the 16.1 maximum along to the stacking tool developer.  Should be an easy fix.

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Mac Lee, Application Developer

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Robert, we've updated the tool so that it more correctly references the maximum versions -- 16.x in this case, to show a "soft maximum" compatibility with 16.1, 16.2, and potential future sub-versions beyond 16.2. The same notation is in place to cover hardware compatible through 22.x as well. Thanks for the feedback!

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Robert Zdzieblo

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Thank you, guys for quick response !