Patent ID: 8605734
Filing Date: 2013-12-10
Classification: H04L

Abstract:
1. A communication system comprising: switches arranged in a network, the switches comprising a flow table; and a controller, wherein said switches are arranged in an order on a network route, and if a first switch of said switches receives a first packet of a communication flow, then the first switch determines whether the first packet comprises a first ordinary packet or a first encapsulated packet, and if the first packet is determined by the first switch to be a first ordinary packet and there is no matching condition in the flow table of the first switch, then said first switch transfers said first ordinary packet to said controller, wherein said controller generates an encapsulated packet having flow entries for said switches on said network route in response to the reception of said first ordinary packet, and transmits said encapsulated packet to said first switch, and wherein said switches on said network route sequentially retain said flow entries of said encapsulated packet in the flow tables while transferring said encapsulated packet, respectively, such that said ordinary packet is transferred from said first switch to a destination through at last one of said switches by using said flow entries.