自上世纪末中国开始大规模建设IP网络以来,IP网络和业务都得到了迅速发展,网络流量的增长基本上保持了每年翻一番的速度。近年来,电信运营商大力促进宽带上网,为IP网络的发展增添了巨大动力。然而,网络流量分析指出,IP业务流量的增长远远快于IP业务收益的增长。如果IP业务收益 Since the start of the large-scale construction of IP networks in China by the end of the last century, IP networks and services have enjoyed rapid growth. Network traffic growth has basically doubled each year. In recent years, telecom operators have vigorously promoted broadband Internet access, which has added great impetus to the development of IP networks. However, network traffic analysis points out that the growth of IP traffic is much faster than the growth of IP services. If the IP business proceeds