Question Re: Stacked Switches

[Aileron88]

Hi all,

Just a simple question. When stacking switches do they have to be running exactly the same version of IOS?

Also, what if we are running the latest IOS but one is running ipbase and the other ipservices?

Thanks,

Adam

[Leo Laohoo]

When stacking switches do they have to be running exactly the same version of IOS?

Correct.  All the members of the switch stack must and should run the same IOS version (example:  12.2(55)SE1) and should run the same feature set (example:  IP Services).

If you have a switch (for example E or X) that runs the "universal" IOS and stacked with switches that can't run "universal" then the  "E" or "X" switch should downgrade to the same feature set as the others.

Hope this helps.

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