OpenFlow port

	IMPORTANT: The loopback interfaces cannot be used as OpenFlow ports.

OpenFlow supports the following types of ports:

• Physical port—Corresponds to a hardware interface of a switch, such as an Ethernet interface. A physical port can be either an ingress port or an output port.

• Logical port—Does not correspond to a hardware interface of a switch and might be defined by non-OpenFlow methods, such as an aggregate interface. A logical port can be either an ingress port or an output port.

• Reserved port—Defined by OpenFlow to specify forwarding actions. Reserved ports include the following types:

  • All—All OpenFlow ports that can be used to forward a packet.

  • Controller—OpenFlow controller.

  • Local—Local CPU.

  • Normal—Normal forwarding process.

  • Flood—Flooding.

  Except the Any type, all reserved ports can be used only as output ports. Only ports of Controller and Local types can be used as input ports.