文章首先分析了新时期的巨大挑战及其对网络的深远影响 ,特别指出了网络面临的巨大容量压力。接下来分别就主宰网络时代的三个基本定律 :摩尔定律、光纤定律和迈特卡尔夫定律的内涵、影响和技术极限进行了论述。最后探讨了骨干网传输链路、传送节点和业务节点的容量演进策略 The article first analyzes the tremendous challenges of the new era and its far-reaching impact on the Internet, with particular emphasis on the enormous capacity pressures that the Internet faces. Then we discuss the connotation, influence and technical limit of Moore’s Law, Fiber Law and Meitecal’s Law, respectively, which dominate the three basic laws of the Internet age. Finally, the capacity evolution strategy of backbone transmission links, transmission nodes and service nodes is discussed