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如何将一个域名解析到多个IP地址?
2022-07-25 22:01:00 【中科三方】
众所周知,一个域名可以解析到一个IP地址,那么一个域名可以解析到多个IP地址吗?
当然可以!
如何将一个域名解析到多个IP地址?
当为域名添加A类型或者AAAA类型解析记录时,参数“值”支持填写多个IP地址,将域名解析到多个IP地址。
当解析记录的“值”包含多个IP地址时,域名解析会返回所有的IP地址,但返回IP地址的顺序是随机的,浏览器默认取第一个返回的IP地址作为解析结果。
其解析流程如下:
1.网站访问者通过浏览器向Local DNS发送解析请求。
2.Local DNS将解析请求逐级转发至权威DNS。
3.权威DNS在收到解析请求后,将所有IP地址以随机顺序全部返回Local DNS。
4.Local DNS将所有IP地址返回浏览器。
5.网站访问者的浏览器随机访问其中一个IP地址,通常选取返回的第一个IP地址。
6.根据大量测试数据显示,解析到各IP地址的比例接近相等。
例如,某网站的域名为“example.com”,部署了3台服务器,对应的IP地址分别为:192.168.1.1、192.168.1.2、192.168.1.3。
为域名“example.com”配置一条A类型记录集,将记录集值设置为3个IP地址。
图1 记录集列表(多个IP)
不同用户访问网站时,返回的解析结果如表1所示。
表1 解析结果示例
关于中科三方
以上就是如何将一个域名解析到多个IP地址的整个流程,域名解析对网站的正常访问至关重要,所以要选择专业的解析服务平台。中科三方作为中国科学院控股有限公司(简称“国科控股”或“中科院控股”)旗下域名管理品牌,专注域名安全领域二十余年,提供专业智能云解析,解析速度更快、稳定性更高,有效提升域名解析安全防护能力。多年来凭借专业的技术和经验,为众多省市政府部门、央企、金融、科研等重点行业和重点客户提供了域名解析、域名注册等域名管理服务。
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