Patent ID: 9137174
Filing Date: 2015-09-15
Classification: H04L

Abstract:
1. A method comprising: sending, by a first OpenFlow controller device currently active within an OpenFlow network, a flow rule to an OpenFlow switching device of the OpenFlow network, the OpenFlow switching device to update a flow table at the OpenFlow switching device with the flow rule, the flow table at the OpenFlow switching device directing the OpenFlow switching device how to dispatch data and frame packets received by the OpenFlow switching device within the OpenFlow network; responsive to receiving the flow rule, transmitting, by the OpenFlow switching device, a message including the flow rule to a second OpenFlow controller device currently active within the OpenFlow network; and responsive to receiving the message, updating, by the second OpenFlow controller device, a flow table at the second OpenFlow controller device with the flow rule so that the flow table at the second OpenFlow controller device is synchronized with a flow table at the first OpenFlow controller device, wherein the flow table at the first OpenFlow controller device is for the OpenFlow switching device and is maintained by the first OpenFlow controller device, and the flow table at the second OpenFlow controller device is for the OpenFlow switching device and is maintained by the second OpenFlow controller device.