【作者】 王强；

【导师】 周洁敏；

【作者基本信息】 南京航空航天大学 ， 交通信息工程及控制， 2008， 硕士

【摘要】 现在,随着民航业务的飞速发展,基于开放系统互联(OSI)模型的航空电信网(ATN)逐渐显示出了它的不足。它不仅限制了ATN的容量及其进一步扩展,而且也不能支持安全性、保密性和组播技术。由于IP技术的不断发展,ATN网IP化成了当前发展的一大热点。但是由于ATN网络规模大,不可能在实际的网络环境中进行实验,所以如何在实验室环境下仿真ATN网络及其协议成了研究重点。基于这一背景,本文重点研究了基于OPNET的IDRP协议模型的建立与实现。首先,论文在分析ATN网络结构和基本的地址访问规则的基础上,重点研究了ATN网络的路由协议(域间路由协议IDRP)。分析了IDRP协议的工作层次,基本组成部分和工作原理,深入系统的分析了IDRP协议中关于建立连接的BIS-BIS协议、路由信息选择,汇聚和信息简化等概念,给出了三者之间协同工作的模型,最后描述了IDRP协议对移动路由的支持。论文还介绍了OPNET网络仿真软件的使用,并在这一平台上建立了IDRP协议的基本模型。本文将IDRP协议分成两个进程:根进程idrp和连接进程idrp_conn,并且用两个有限状态自动机描述和实现了它们,完成了IDRP协议的基本功能模型并在在OPNET软件中仿真了该模型。实验表明该模型实现了IDRP路由协议的主要功能和用途。更多还原

【Abstract】 Now, as the rapid development of civil aviation, the deficiency of Aeronautical Telecommunication Network (ATN) based on the Open System Interconnection (OSI) model, becomes more and more obvious. It not only limits the capacity of ATN and its further improvement, but also can’t support the security, privacy and multicast technology. Conversely, with the growth of IP technique, applying IP technique in ATN attracts more and more attentions over the world. However, because the ATN network is a large-scale network, and some related experiments can’t be done on it, so how to simulate ATN network and its protocols in laboratory is becoming a hot point in this field. Due to this background,this paper mainly researchs how to build an IDRP protocol model based on OPNET.Combining with the anlysis of ATN network architecture and basic knowledge of naming and addressing, this paper has well researched the ATN routing protocol (Inter Domain Routing Protocol IDRP). It analyzes the working layer, basic component and principle of IDRP, and particularly researches the BIS-BIS protocol, IDRP’s concept such as routing selection, aggregation, reduction, and send out the relationship of the above three concepts. At last, it describes the support of mobile routing.In the last part of this paper, it introduces the OPNET network simulation software, and gives the IDRP protocol model on this platform. This paper uses two processes to describe IDRP protocol. The first one is root process idrp, and the other is child process idrp_conn. Then, it describes and implements the two processes by the finite state machine (FSM). It gets the basic function of IDRP through this FSM. At last, the IDRP model is simulated in OPNET, and the result shows that the model achieves the funtions defined in IDRP protocol.更多还原