一种数字中继卡路由器的技术研究与分析

RESEARCH AND ANALYSIS OF A ROUTER BASED ON DIGITAL RELAY CARDS IN PC

基于采用数字中继线和数字中继卡来实现远程ＬＡＮ间的互连，将远程的多个以太网连接成一个大型的网络系统。对于远程网络的互连，必须选择合适的互连链路即对路由器进行设计。本文对网络层协议和路由选择算法等核心部分的设计与实现作了深入探讨，并提出一个改进的路由更新算法，以加快路由收敛、防止形成环路。分析及试验结果表明，设计是成功的。

This paper discusses the interconnections of the long distance LANs by means of trunk lines and trunk cards. It involves a number of ethernets to a large network system through the telecommunications system or a special utility data transmission system. For the interconnection of remote networks, it is necessary to choose suitable line types of interconnection. The design and implementation of the key technologies such as the protocol of network layers and the routing algorithm is discussed. A revised algorithm to improve the route convergence and avoid the routing loop is proposed in the paper. It is demonstrated that the design is successful through analysis and experiments.