I have a setup of Mx67, two M120 switches connected and working fine with few VLAN's setup
I have new requirements to connect few ports from both Switches to another Meraki Firewall Z3, and the machine will get the DHCP IP address from that Meraki Z3 not the main Mx67.
And all traffic should be passed to the Z3.
I connected the Z3 to one port on Switch1, and another port on Switch 2 and setup these two ports from the switches as Trunk port as they will use VLAN 20 which created from Z3.
Then i configured the the other ports as access with VLAN 20 only on the switch port not the Meraki.
VLAN 20 is not been used in the Mx67.
When i did that 1st to Switch 2 it works fine, but when i connect the Z3 to Switch 1 went down nd had to remove all the config and cabled in order to work again.