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1. (WO2017167359) METHOD OF FORWARDING PACKET FLOWS IN A NETWORK AND NETWORK SYSTEM

Pub. No.:    WO/2017/167359    International Application No.:    PCT/EP2016/056929
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Thu Mar 31 01:59:59 CEST 2016
IPC: H04L 12/721
H04L 12/715
H04W 84/18
Applicants: NEC LABORATORIES EUROPE GMBH
Inventors: LESSMANN, Johannes
BIFULCO, Roberto
Title: METHOD OF FORWARDING PACKET FLOWS IN A NETWORK AND NETWORK SYSTEM
Abstract:
The present invention relates to a method of forwarding packet flows in a network, wherein said packet flows originate from a plurality of end hosts (6) in the network and wherein said packet flows are transmitted from the respective one of said end hosts (6) to a sink node (8) via predefined routing paths. A routing path for packet flows of an end host (6) includes one or more SDN switches (2) that are under control of an SDN controller (4), wherein said one or more SDN switches (2) include an edge switch (7) having at least one port connected to said end host (6). The forwarding of a packet flow from a particular of said end hosts (6) by the respective edge switch (7) is enabled by means of a dedicated packet - door-opener packet - that, when being processed at said switches (2, 7), effectuates the activation or installation of a forwarding rule within said switches (2, 7) for forwarding said packet flow to the next switch along its routing path or to its final destination.