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文章基于ISO/OSI七层模型,介绍了数据链路层协议设计的算法,并对该协议所采用的技术和方法加以讨论.这里,协议中采用编号的方法解决传输中的顺序控制问题,流量控制采用滑动窗口技术,及重发纠错处理差错问题.文中还定义了一种帧结构格式,传输控制规程采用HDLC,规定ACK、NAK控制帧作为传输中的肯定应答和否定应答.文中全部进程采用PASCAL语言进行编写.
Based on the ISO / OSI seven-layer model, this paper introduces the design of data link layer protocol and discusses the techniques and methods used in this protocol.Here, the protocol uses numbering method to solve the problem of sequential control in transmission, Control the use of sliding window technology, and error correction error retransmission processing.This paper also defines a frame format, the transmission control procedures using HDLC, the provisions of ACK, NAK control frame as the transmission of the positive response and negative response. Written in PASCAL language.