100% agree. I would also review the STP Guard settings on all the ports to make sure it is intended and in alignment with Meraki documentation and best practices. And as always, remember that MX firewalls do not participate in STP. Configuration: https://documentation.meraki.com/MS/Port_and_VLAN_Configuration/Configuring_Spanning_Tree_on_Meraki_Switches_(MS) https://documentation.meraki.com/MS/Port_and_VLAN_Configuration/Spanning_Tree_Protocol_(STP)_Overview <- this links to a basic eLearning module that might be helpful, esp. if there are other switches in your network Design docs: https://documentation.meraki.com/Architectures_and_Best_Practices/Cisco_Meraki_Best_Practice_Design/Best_Practice_Design_-_MS_Switching/General_MS_Best_Practices https://documentation.meraki.com/MS/Meraki_Campus_LAN%3B_Planning%2C_Design_Guidelines_and_Best_Practices
... View more
