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1. (WO2017190579) METHOD FOR REALIZING PROTECTION SWITCHING IN SDN ARCHITECTURE AND FORWARDING DEVICE

Pub. No.:    WO/2017/190579    International Application No.:    PCT/CN2017/080147
Publication Date: Fri Nov 10 00:59:59 CET 2017 International Filing Date: Wed Apr 12 01:59:59 CEST 2017
IPC: H04L 12/707
Applicants: ZTE CORPORATION
中兴通讯股份有限公司
Inventors: WEI, Jianjie
魏建杰
Title: METHOD FOR REALIZING PROTECTION SWITCHING IN SDN ARCHITECTURE AND FORWARDING DEVICE
Abstract:
Disclosed is a method for realizing protection switching in an SDN architecture and a forwarding device. The method comprises: a driver module in an SDN forwarding device receiving a service flow table and a service group table from a controller, extracting information from the service flow table and the service group table, forming same into a complete ingress/egress service tree and then delivering same to a side-hung FPGA; the side-hung FPGA creating, according to the ingress/egress service tree, a complete inflow point, outflow point and egress service tree; and when it is detected that a service path is interrupted, the side-hung FPGA directly modifying a service forwarding table entry of a switching chip in the SDN forwarding device using the inflow point, the outflow point and egress service and a protection path and a protection parameter saved thereby, so as to switch a service forwarding path, thereby realizing fast protection switching of the service forwarding path.