Patent ID: 9319241
Filing Date: 2016-04-19
CPC Classification: H04L

Claim Text:
1. A packet managing method of a packet forwarding device, comprising: receiving a packet; extracting flow information from the packet; searching a flow entry associated with the packet; searching a flow entry request table, when a flow entry associated with the packet is not found, to judge whether a request on another flow entry corresponding to the same flow is transferred to the controller within a reference time or not; reserving a request of transmitting the flow entry associated with the packet when a request on the other flow entry corresponding to the same flow is transferred to the controller within the reference time; and transferring the request of transmitting the flow entry associated with the packet to a controller after the reference time, wherein when the request on the flow entry associated with the packet is determined to already be transferred to the controller once, the request is not repeatedly transferred within a reference time.