First , this paper presents some obs core node switch architectures . especially , analyses different switch and conflicting ability with different switch architectures . then this paper research a new switch architecture , . with simulation results , it compare with other artchitecture ’ s performances 首先,本文介紹了現(xiàn)有的幾種obs核心節(jié)點(diǎn)交換結(jié)構(gòu),主要分析了不同twc 、 fdl配置和不同交換矩陣所組成的交換結(jié)構(gòu)在交換能力和沖突情況上的不同。