Hi WW,   Switch2 of stack B reports Switch1 as Root via the port connected to Switch2 ... View more

As @CoreyDavoll1 already mentioned.  In Meraki you cannot use a management IP on a switch that uses it's own routing table to reach the cloud. You have to see that management IP as being on another VRF.   So basically you have two choices. You can widen your uplink VLAN subnet to the upstream router/firewall to accomodate the extra IP's needed for MGMT.  For example: your L3 switch uses 10.0.0.0/29 as uplink subnet pointing to 10.0.0.1 for it's 0.0.0.0/0 route. and using 10.0.0.2 as routing IP but using 10.0.0.3, or 4 or 5 as MGMT IP. The other option is to have a separate VLAN subnet between your uplink device and your switch to get your MGMT IP's on. ... View more