The MX67's Use Case Recommendations are 50 devices, so if you connect 200 devices, it may exceed its capacity. https://documentation.meraki.com/MX/MX_Sizing_Information/MX_Sizing_Principles#Use_Case_Recommendations The MX84's Recommended Device Count is 200 devices based on the datasheet, so the number of connections may be too much. https://documentation.meraki.com/MX/MX_Overviews_and_Specifications/MX84_Datasheet#Context_and_Comparisons It may be a good idea to try it with a successor model such as the MX85 using a trial. The MX85's recommended connection limit is 250 devices, so there should be no problem.
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