域名系统 – Windows Server – DHCP / DNS更新 – 清除过时的DNS记录

我们运行 Windows 2008 Server并向网络提供DHCP和DNS服务.到目前为止,一切都很好.

问题是,从DHCP提供IP的客户端会自动在DNS中列出其各自的主机名.客户端列出2-4次,名称相同但IP不同.总有一个正确的IP /主机名组合,2-4个过时的组合.

是否有任何简单的自动方式摆脱所有过时的？我假设当过时的记录被清除时,必须有某种方式在DNS中过期？

是的,您可以在屏幕截图中更改老化设置.展开左列中的域,右键单击并转到属性,然后从常规选项卡中单击老化.从帮助文件：

No-refresh interval Specifies an interval of time,in either days or
hours. When a resource record is refreshed,it is not refreshed again
until this interval of time has elapsed.

Refresh (interval) Specifies the
minimum time that records are expected to remain in the DNS database
after the no-refresh interval expires.

This interval should not be smaller than the maximum refresh period
for any resource records. In most networks,this interval corresponds
to the Dynamic Host Configuration Protocol (DHCP) lease renewal
interval. For DHCP servers running Windows Server 2008,the default
lease renew interval is four days.

换句话说,如果将其设置得太低,而没有DCHP尝试更新其设置,则客户端计算机无法自动重新注册DNS.