DNS权威服务器选择方式研究  

Research on selection of authoritative DNS server

作　　者：王圣元 张宇[1] 李东[1] 

机构地区：[1]哈尔滨工业大学计算机科学与技术学院,哈尔滨150001

出　　处：《智能计算机与应用》2017年第6期122-127,共6页Intelligent Computer and Applications

摘　　要：本文研究了DNS权威服务器的选择问题。为了提升域名的容灾能力和解析的性能,大多数的域都会配置有多个DNS权威服务器。当DNS递归服务器收到针对该域名的查询时,需要选择其中的一个DNS权威服务器进行查询。但具体选择的方式并不明确,且相关RFC标准也没有对递归服务器采用何种方式选择权威服务器做出规定,本文分析了各个常见的DNS服务器版本对权威服务器的选择算法,分析这些算法的选择效果和影响其选择效果的因素。并对全国范围内的开放DNS递归服务器进行测量,分析其对权威服务器的选择效果。This paper studies the selection of authoritative DNS server. In order to enhance the robustness and performance of a domain name,most domains are configured with multiple authoritative DNS servers. When the DNS recursive server receives a query for the domain name,it needs to select one of the authoritative DNS server to query. However,the specific manner of choice is unclear,and the relevant RFC standards do not stipulate the way in which the recursive server chooses the authoritative DNS server. This paper analyzes the selection algorithm of each common DNS server version for the authoritative server,and discusses the selection effects of these algorithms and the factors influencing the selection effect.The paper also measures the open DNS recursive server throughout China and analyzes its selection effect on the authoritative server.

关 键 词：DNS权威服务器选择 域名系统 网络测量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]