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一、局域网带宽告急 由于微机和局域网(LAN)已对企业计算机应用构成了巨大影响,过去网络所认为的高传输速度,并不能满足今天迅速增长的如客户/服务器运算、E-mail、桌面视频会议和多媒体等宽带需求。目前,令牌环(Token Ring)网络被认为是最具高效率的局域网技术。令牌环网络能提供16Mbps带宽,而且由于利用令牌传送协议,即使负载带宽达到或超过95％,系统的响应时间仍可得到保证。反观以太网(Ethernet)就略显逊色:当负载带宽超过40％时,会出现竞争情况,因而耗用所有余下的带宽,使不同用户觉得系统的响应时间有极
First, the LAN bandwidth emergency Since the computer and the local area network (LAN) has a huge impact on the application of computer business, the network in the past that the high transmission speed, and can not meet today’s rapid growth, such as client / server computing, E-mail, desktop video Conference and multimedia and other broadband needs. Currently, the Token Ring network is considered the most efficient LAN technology. Token Ring networks provide 16Mbps of bandwidth, and because of the token transfer protocol, the system’s response time is guaranteed even when the load bandwidth reaches or exceeds 95%. On the other hand, Ethernet is slightly inferior: when the load bandwidth exceeds 40%, there is a competitive situation, thus consuming all the remaining bandwidth so that different users feel that the system has very fast response time