Well, I got it figured out. It was simple. In order to use network equipment other than Meraki downstream, you need to create the network for the MX as type of "Security Appliance", not combined. I had the network created as "combined" to begin with so I couldn't select "IP address" as the Client tracking method. Default is MAC address. Once I created a new network for my MX with the type of "Security appliance" and select IP address as client tracking method, I was able to get a response from the switch when I pinged the gateway, which is the VLAN IP on the Meraki. ... View more