Those VLAN interface IP addresses will be the default gateway for each respective VLAN. Same for the other company, only pointing to the other edge device.

The notes include how to setup VLANs, plus how to setup firewall rules. I had one main "Trusted" VLAN for myself, and a guest VLAN and an "IoT" VLAN.

Does VLAN setup have your head spinning? Whether you're trying to set up a VLAN router or switch, make sure you follow these 5 tips for an easy transition!