There is not a lot to share.   I have three Vans configured  Vlan23 172.23.151.0/24 GW 172.23.151.1   1 Port configured as Access in Vlan Vlan26 172.26.151.0/24 GW 172.26.151.1   Port configured as Access  in Vlan Vlan10 192.168.1.0/24    GW 192.168.1.1     Port configured as Access  in Vlan   If I activate DHCP on any of these Vlans, the operation is fine Vlan10 192.168.1.0/24 works with or without DHCP Vlan23 & 26 does not work with Static address on a Windows Client mchine If I set a DHCP static reservation on Vlan23 & 26 they work fine   This is not a config typo as the same issues has been seen across different sites and across different models of the MX by different configuring engineers.   There are no FW rules except the default Deny. The client Machine being tested is plugged directly into an MX port    Personally I think it is a firmware bug and I am liaising with Meraki support but wondered if this  had been seen before.   ... View more

No rules etc stopping communication.   Even the MX ping tool does not work to 8.8.8.8 if the source address is a Vlan starting with 172.x.x.x Works fine with other options ... View more