| 术语 | delayed duplicates |
| 释义 | delayed duplicates 延迟复制 Duplicated packets. These occur when the routing algorithm gets into a loop or when congestion causes a long delay. The sending host retransmits. If a new route is taken, the next packet may arrive before the original, and the extra packet will be forgotten. If the delayed packet shows up at the receiver after the sequence numbers have wrapped around, it will be accepted, and the correct packet rejected as a duplicate. The user will receive incorrect data from the transport station, and no error will be detected. 重复的报文分组,当路径算法进入循环或因阻塞引起长时间延迟时出现的情况,发送主机 将重发报文分组。如果选择了新的路径,则后面一个报文分组可能在原来一个之前到达,且此 多余的报文分组会被忽略。如果因序列号折转而在接收端出现延迟报文分组时,则它将被接 收,而正确的报文分组作为重复报文而被拒绝,用户将从传输站收到不正确的数据,而且错误 检测不出来。 |
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