16.5. Bridge

You can find the Bridge Settings at Interfaces → Assign → Bridge.

Bridges are VLAN aware meaning that you can define VLANs on them and assign them to ports as either tagged or one of them as untagged.

A VLAN aware Bridge works like a switch.

Bridge can only be configured on top of:

  • Physical Interfaces
  • Bond
  • OpenVPN Interface

You can pick and change the interfaces in a Bridge on the Edit or Add option of the Bridge.

16.5.1. Bridge VLAN

The bridge must have a default (non tagged) VLAN defined. The bridge will not be active and enabled unless you assign the Bridge to an interface and enable it.

You can then define additional VLANs either single VLANs or a range (e.g. 100-200). Only defined VLANs will be forwarded on the Bridge.

In Order to use IP Addresses or firewall rules on the Bridge you have to create a VLAN on the bridge under VLAN and assign it to an Interface.

You can not filter traffic on the bridge itself but only on VLAN interfaces on the bridge. The bridge automatically passes all other traffic through the firewall.

16.5.2. STP/RSTP

VT AIR supports RSTP which works with STP and MSTP. You can enable RSTP and also set the STP Treepriority.

Assign to new Interface is an option shown when you create a new VLAN and it will automatically assign the Interfaces as described in Assign Interfaces.

16.5.3. Bridge Port Settings

After you saved the Bridge, you an also configure settings for each individual bridge port.

MTU can be set on a per port basis

Speed and Duplex can be set on a per port basis

Enable Untagged VLAN if you want an untagged VLAN on the port. You can also have only tagged VLANs by disabling this option.

Untagged Port VLAN sets the untagged VLAN.

Bridgevlans can be enabled individually when they are defined on the Bridge. Be aware that you can not enable a subset of the defined VLANS. You would need to define each VLAN or VLAN range that you want to enable individually and enable them on the corresponding ports.