5.5 How are VLANs Used in Oracle VM?

Oracle VM supports multiple virtual networks, or VLANs, on the same network port or bond. Each VLAN is essentially an independent logical network operating with other VLANs over the same physical connection. This means that virtual machines deployed on different networks, connected through the same Oracle VM Server port (or bond), can have traffic directed to different VLANs. This feature is implemented using VLAN Interfaces.

Configuring VLANs within Oracle VM Manager involves creating VLAN interfaces. A VLAN segment or ID is assigned to each VLAN interface when you create it. The VLAN interface is a virtual interface attached to the bond or port that physically handles the traffic for the entire VLAN. When configuring different logical networks within Oracle VM Manager, the VLAN interfaces that you have defined can be attached to the network in the same way as any ports or bonds. This allows you to treat each VLAN ID as a separate logical network interface. When traffic is routed through the VLAN interface, it is automatically tagged with the VLAN ID that is configured for that interface, and is then routed through the actual port or bond that the VLAN interface is attached to.

The VLAN ID is used by an attached VLAN switch to segregate traffic among the different VLANs operating on the same physical link. When a VLAN is configured, it functions exactly like a separate physical connection. The original physical port that the VLAN interface is attached to, can continue to be used as a separate port to route untagged traffic.