动态域名系统客户端的设计与实现

发布时间：2018-06-16 15:06

本文选题：动态域名系统 + 接口管理　；参考：《华中科技大学》2014年硕士论文

【摘要】：互联网的高速发展带来了数量巨大的网络服务，而要在互联网上对服务或者资源进行访问需要找到IP地址，而IP地址并不容易被人们记住，因此有了域名系统。互联网用户只需要记住访问的域名，即可通过DNS服务得到IP地址。但随着互联网技术的发展，传统的域名与单个IP地址一一对应的限制，已经越来越不适应当下互联网服务灵活、快速的变更需求。DDNS（动态域名系统）能够有效解决域名与IP地址的动态变更需求，提供灵活、及时、准确的域名解析服务。DDNS客户端基于交换机硬件平台，以Comware网络操作系统为软件环境，设计并实现了动态域名系统客户端。动态域名系统是一种客户端/服务器架构。DDNS客户端作为变更发起端，需要及时响应网络设备的IP变更事件，并向DDNS服务器端发起更新请求，然后DDNS服务器向DNS服务器发送更新后的域名和IP地址，DNS服务器就能够提供正确的DNS查询结果。DDNS客户端需要处理交换机上的接口事件。网络操作系统下的接口管理模块是管理接口事件的核心模块。在Comware中，接口管理模块采用统一的数据结构存储接口信息，对外统一采用接口索引标识各种接口并提供了各种函数接口，包括公共数据结构、接口数据访问、接口类型数据访问、接口遍历、应用模块私有数据组织等内容。设计、实现的客户端系统，能够满足DDNS客户端的功能需求，正确及时响应网络设备的接口事件响应，发送正确的DDNS更新请求。
[Abstract]:The rapid development of the Internet has brought a large number of network services, and to access services or resources on the Internet, we need to find IP addresses, and IP addresses are not easy to remember, so there is a domain name system. Internet users only need to remember the visited domain name, can get IP address through DNS service. However, with the development of Internet technology, the limitation of one-to-one correspondence between traditional domain name and single IP address has become more and more inadaptable to current Internet services. Dynamic Domain name system (DDNS) can effectively solve the dynamic change demand of domain name and IP address, and provide flexible, timely and accurate domain name resolution service. DDNS client is based on switch hardware platform. The dynamic domain name system client is designed and implemented under the software environment of Comware network operating system. Dynamic domain name system is a kind of client / server architecture. DDNS client is the initiator of the change. It needs to respond to the IP change event of the network device in time and initiate the update request to the DDNS server. Then the DDNS server sends the updated domain name and IP address to the DNS server and the DNS server can provide the correct DNS query result. DDNS client needs to handle the interface events on the switch. The interface management module under network operating system is the core module of managing interface events. In Comware, the interface management module uses unified data structure to store interface information, uses interface index to identify all kinds of interfaces and provides various functional interfaces, including common data structure, interface data access, etc. Interface type data access, interface traversal, application module private data organization and so on. The design and implementation of the client system can meet the functional requirements of DDNS client, respond correctly and timely to the interface event response of network equipment, and send the correct DDNS update request.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.07

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