Controller Packet-Forwarding When Hybrid Mode Is Disabled - HP HPE VAN SDN Controller 2.7 Administrator's Manual

Controller packet-forwarding when hybrid mode is disabled

Figure 48 Controller operation with hybrid mode disabled
When hybrid mode is disabled (set to "false"), the controller examines and directs the packets
in all flows for the given OpenFlow instance. The controller forwarding decisions for flows in a
given instance are based on the requirements of the installed applications. The forwarding
decision is communicated to controlled switches through OpenFlow. In instances where the
controller has not provided the switch with a rule for how to forward a packet type, the switch
sends the packet to the controller and waits for the controller to provide forwarding instructions.
Hybrid mode is commonly disabled in networks that are either used for experimental OpenFlow
work (such as developing a controller application) or for networks that are completely new and
designed to be fully controlled by OpenFlow.
84 Hybrid mode for controlling packet forwarding