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Ubiquiti - VLAN

Ubiquiti always uses VLAN 1 as the untagged native VLAN.

VLAN is a Layer 2 (L2) technology that limits a broadcast/flooding domain. Only clients in the same VLAN can talk to each other.

NOTE: There are many different network types that can be created:

Any of these networks can be allocated to a VLAN.

Corporate is a general purpose network and by default is assigned to LAN.
- The UniFi controller will provision not only the VLAN itself but also a matching IP subnet for this VLAN.
- IP subnets exist at Layer 3, whereas UniFi switches are purely Layer 2.
- Therefore, if you have no USG, there's no point in creating a “Corporate” VLAN.

Guest will apply the Guest Control setting if you enable the Guest Portal.
VLAN Only will remove any subnet options and can be used to define VLANs for pure VLAN tagging purposes by Unifi switches.
- This allows you to add/remove a VLAN tag to network packets on a switch port (for instance) connected to another, non-Unifi network device that expects/sends these.
- This is the best choice to use for a VLAN, if not using a USG.