thank you for your suggestion. i try to do sub-svi on fortigate but it's didn't work too. it work only vlan 10 for wan connectivity from the switch. for vlan 30 not working. is it bug from meraki.i open the case tac said The management IP for a switch (stack) performing L3 routing cannot have the gateway pointed to one of its own L3 interfaces as it will not be able to check in using the assigned management IP when the gateway is pointed to itself. For example, if 192.168.1.1 is one of the L3 interfaces on a switch (stack), you cannot have 192.168.1.1 as the gateway for its management IP (Switching > Switches > LAN IP). ref : https://documentation.meraki.com/MS/Layer_3_Switching/Layer_3_Switch_Example#Switch_Management_IP_and_Layer_3_Interfaces is it limitation fo meraki product. i have use cisco catalyst 3850 it's work fine.
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