Can you provide clearer information? Knowing what you have in your infrastructure is not enough. Provide us configuration and topology details. As previously reported. just configure the switch port where the Linksys is as the access mode in the desired VLAN and the rest is configuration on the Linksys. If you are trying to mesh between the two APs this will not work, in other words you cannot bridge Meraki and non-Meraki APs. If you are configuring with the same SSID name, disable Air Marshal or configure a different SSID name.
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