A few things are going on here: Your post title mentions MR74 (which is End of Sale), whereas the body mentions MR76. As it happens these work very similarly (see below), but it's probably worth clarifying the detail. I think much of the first part of your question is covered by the following documentation: https://documentation.meraki.com/MR/Deployment_Guides/Mesh_Deployment_Guide and more specifically: https://documentation.meraki.com/MR/WiFi_Basics_and_Best_Practices/Extending_the_LAN_with_a_Wireless_Mesh_Link One key thing to remember here is that there is no specific 'bridge mode' operation for Meraki MR APs; the functionality is based around Meraki meshing, which is more general than that; it looks to use a wireless uplink for a powered up AP who's wired uplink isn't working. You haven't said very much about how you want to logically treat clients connecting at the far side of the mesh link, which likely affects your options and matching functionality (see the docs for more) . For your question about antennas, I think you may be mixing up the guidance for different AP models, between those with dedicated radios for each frequency (MR74/6) and those supporting > 2 spatial streams, with both 2.4 and 5 GHz served by the same antenna posts (MR84/6) For the latter, the expectation wold be that a single client should be able to communicate via all four antenna posts simultaneously - in order to make use of the extra spatial streams - hence all the connected antennas need to provide essentially the same coverage. This is also why such APs require dual-band antennas. For the former you could indeed have entirely different coverage areas for the 2.4 GHz versus the 5 GHz - e.g. 5 GHz directional antennas, on the outside of the buildings, pointing at each other, with the expectaion that the mesh link will form across that path - with a 2.4 GHz (maybe omni-directional? or broad patch?) coverage area inside the building, for clients. You'd obviously have to choose an appropriate antenna for each and route the cables for one of them through the wall (depending on whether you have the AP indoors or out). You could not use this separate coverage areas concept with MR84/6
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