H3C Technologies H3C S6800 Series Switches - Manual (Page 10)

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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.
OpenFlow instance
You can configure one or more OpenFlow instances on the same device. A controller considers each
OpenFlow instance as a separate OpenFlow switch and deploys forwarding instructions to it.
In this chapter, an OpenFlow switch is the same as an OpenFlow instance, unless otherwise specified.
Associated VLAN
When an OpenFlow instance is associated with VLANs, the flow tables take effect on packets only within
those VLANs.
Activation and reactivation
The configurations for an OpenFlow instance take effect only after the OpenFlow instance is activated.
The controller can deploy flow entries to an openflow instance only after the openflow instance reports
the following information to the controller:
• Support capabilities for OpenFlow.
• Ports that belongs to the openflow instance.
An activated OpenFlow instance need be reactivated when any of the OpenFlow instance configurations
is changed.
After reactivation, the OpenFlow instance is disconnected from all controllers and then reconnected to
them.
OpenFlow instance port
An OpenFlow instance sends information about following ports to the controller: