It kind of depends how you had port security set up previously. Meraki supports both explicit MAC address whitelisting and sticky MAC address whitelisting. https://documentation.meraki.com/MS/Port_and_VLAN_Configuration/Switch_Ports#Port_configuration It doesn't however support a MAC address maximum where (for example) you enforce only 1 MAC address to be allowed on the port at any one time, but that MAC address can change. The equivalent of Switch(config-if)#switchport port-security maximum 1
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