DHCP Option 常见取值及含义

Options号Options作用
1设置子网掩码选项。
3设置网关地址选项。
6设置DNS服务器地址选项。
12设置域名选项。
15设置域名后缀选项。
33设置静态路由选项。该选项中包含一组有分类静态路由(即目的地址的掩码固定为自然掩码,不能划分子网),客户端收到该选项后,将在路由表中添加这些静态路由。如果存在Option121,则忽略该选项。
44设置NetBios服务器选项。
46设置NetBios节点类型选项。
50设置请求IP选项。
51设置IP地址租约时间选项。
52设置Option附加选项。
53设置DHCP消息类型。
54设置服务器标识。
55设置请求参数列表选项。客户端利用该选项指明需要从服务器获取哪些网络配置参数。该选项内容为客户端请求的参数对应的选项值。
58设置续约T1时间,一般是租期时间的50%。
59设置续约T2时间。一般是租期时间的87.5%。
60设置厂商分类信息选项,用于标识DHCP客户端的类型和配置。
61设置客户端标识选项。
66设置TFTP服务器名选项,用来指定为客户端分配的TFTP服务器的域名。
67设置启动文件名选项,用来指定为客户端分配的启动文件名。
77设置用户类型标识。
121设置无分类路由选项。该选项中包含一组无分类静态路由(即目的地址的掩码为任意值,可以通过掩码来划分子网),客户端收到该选项后,将在路由表中添加这些静态路由。
148EasyDeploy中Commander的IP地址。
149SFTP和FTPS服务器的IP地址。
150设置TFTP服务器地址选项,指定为客户端分配的TFTP服务器的地址。

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