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一旦发送站发现了碰撞后就会发出一个32比特长的“Jam”(阻塞)信号,在标准中并没有规定阻塞信号是什么样子。(只要它不产生一个与它发送信号的FCS相应的信号)。所以大多数网卡只用一个简单的100MHz的时钟信号。如要这个时钟信号民比信息发送的早并正好将帧首部分替换,则发送站地址和接收站的地址可能被转换成一种的值。例如全是5。中继器在一个口发现有碰撞后会向其它口发送阻赛信号从而保持所有站都能查到碰撞。 在碰撞以后剩余的信息帧的部分称为碎帧(Fragment)这是因为原来的帧已经被损坏而且不完整。根据碎帧的情况我们可以定义三种类型的碰撞。
Once a collision is detected at the transmitting station, a 32-bit “Jam” signal is issued, which does not specify in the standard what the blocking signal is. (As long as it does not generate a signal corresponding to the FCS it sends). So most network cards only use a simple 100MHz clock signal. If the clock signal is sent earlier than the message and replaces the first part of the frame, the address of the sending station and the receiving station may be converted into a value. For example, all five. The repeater sends an obstructing signal to the other ports after it detects a collision so that all stations can detect the collision. The part of the remaining information frame after the collision is called a Fragment because the original frame is corrupted and incomplete. According to the broken frame we can define three types of collisions.