Don't forget that Meraki ACL's are basically a collection of VACL's (VLAN ACL's).  So basically it's a giant port ACL that is applied to every port, depending on the input VLAN if defined. This means you can block intra VLAN traffic which is different from a RACL (routed ACL) you applied on your 3750 SVI. ... View more

Configure the MS425 uplink management interface to use DHCP.   If it goes wrong, then you can plug it into the 4G router, power cycle the MS425 switch, and it'll get a DHCP IP address from the 4G router and get you back in. ... View more