宽带IP网技术进展

Technical Progresses in Broadband IP Networking

宽带IP网技术近一年来发展迅速,由于它具有效率高、性能好、设备省、成本低、协议单一的优点,特别适合于我国的网络建设。运行统一的IP协议的以太网将取代B-ISDN及ATM成为局域网、企业网及城域网的主流。线速路由交换机和密集波分复用技术的成熟和走向商品化,结合产生了IP优化光学网络。由于省去了SDH和ATM设备,它将是宽带IP网的最优方案。宽带IP网将可以满足分类服务(COS)和质量保证(QOS)服务,提供虚拟专用网(IP-VPN)业务,在国家经济信息化进程中发挥日益重要的作用。

There have been rapid progresses in broadband IP networking since last year. Because broadband IP network has the advantages of high efficiency, high performance, less equipment, low cost and single protocol, it is espetially suit for chinese network construction. Ethemet operates under unified IP protocol will replace B-ISDN and ATM to become the main trend of LAN, MAN and enterprise network construction. As the technologies of line speed router switch and dense wave divided multiplex (DWDM) become mature and products been carried out, IP optimized optical network using these technologies has been formed. It is the optimal choice of broadband IP networking because it gets rid of SDH or AIM equipment. With the achievement of COS (Classification of Service) and QOS(Quality of Service) and the application of IPVPN (Virtual Private Network), broadband IP network will play an important role in the process of chinese informationization.