I feel like this has to be a stupid question and I should be able to find the answer somewhere - but I can't find it...

Is there, anywhere, a concise document that explains how to configure Dell Z9100-ON network switches in a stack? In particular (or at least, to start with), I can't figure out how to set a given switch's stack-unit number, and all of my usual Google searching and documentation scouring is failing me. I can find stacking configuration information for other (primarily FTOS) Dell switches, but not the Open Networking type switches. I'm not sure where to even begin looking in the documentation - I expected to find a section like "Configuring Switch Stacking" or something like that (as I find such documentation for other switches), but I find no such thing for the Z9100-ON.

Am I missing something very very obvious?

  • I don't think that switch is a stackable switch; not all switches are stackable. There is nothing about it in the data sheets, and that is something about which Dell would brag. Nor do I find any mention of it in any of the reviews.
    – Ron Maupin
    Nov 8, 2017 at 3:10
  • I was led to believe it was. If that's actually the case ... that would indeed be "missing something very very obvious"... :-)
    – patbarron
    Nov 8, 2017 at 3:15
  • 1
    I think you are going to have to bite the bullet and call Dell...
    – Ron Maupin
    Nov 8, 2017 at 3:35
  • 1
    Also, if you find out anything, please post an answer and accept it so that the question doesn't keep popping up forever, looking for an answer.
    – Ron Maupin
    Nov 8, 2017 at 3:36
  • Datasheet don't mention stacking. You can try a command like "stack-unit 1 renumber 2"... If it's not working, I'm 99% sur this is not a stackable switch
    – Golgot
    Nov 8, 2017 at 10:25

1 Answer 1


This switch support "L2 multipath support via Virtual Link Trunking (VLT) and multiple VLT (mVLT) multi-chassis link aggregation technology"

This is supposed to be a "a more resilient and manageable alternative to stacking".

try this link for configuration


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