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宽带综合业务数字网(B—ISDN)可提供从数kb/s到数百mb/s(如(HDTV),某些场合可达数Gb/S(如高速LAN的互连)等多种业务.速率的多样性及业务的突发性导致高速分组交换技术的产生.现有的高速分组交换技术由于采用电子交换,存在着数据传输时延大,协议处理和控制管理较复杂等问题;另一方面,宽带网络的传输都是基于光纤
Broadband Integrated Services Digital Network (B-ISDN) can provide services ranging from several kb / s to hundreds of mb / s (HDTV), up to several Gb / s in some applications (such as high-speed LAN interconnection) The diversity of the rate and the suddenness of the business lead to the emergence of high-speed packet switching technology.Existing high-speed packet switching technology has the problems of large data transmission delay, complicated protocol handling and control management due to the use of electronic switching. On the one hand, broadband network transmission is based on optical fiber