I do not think this is true. We just renewed our Meraki license as well and are having to decom and rebuild every vMX to move from vmx100 to vMX-m, I totally agree it is basically the exact same thing and it is extremely dumb, but in the Meraki dashboard you cannot apply a vmx-m to a vmx100 instance. Pretty disappointed in the lack of intelligence in the meraki licensing overall.
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