DHCP custom options are used to define a nonstandard DHCP Client option that might be required by your software or applications.
A small number of custom options including option 150 (TFTP server), 176 (IP Telephones), and 252 (WPAD) are available in the Address Manager user interface as DHCP client options. Options that aren't included can be added as DHCP custom options.
You can create a DHCP custom option definition from a configuration’s DHCP Settings tab. After creating a custom option definition, it's available as a DHCP Client option. Add a DHCP custom option at any level where a native DHCP client deployment option can be assigned.
| Option Data Type | Specifies |
|---|---|
| IPv4 Address | An IPv4 address. Example: 192.0.2.10 |
| Text | An NVT ASCII string. Example:
|
| Unsigned Integer 8bit | An unsigned 8-bit integer. Range: 0 to 255 |
| Signed Integer 8bit | A signed 8-bit integer. Range: - 128 to 127 |
| Unsigned Integer 16bit | An unsigned 16-bit integer. Range: 0 to 65,535 |
| Signed Integer 16bit |
A signed 16-bit integer. Range: -32,768 to 32,767 |
| Unsigned Integer 32bit |
An unsigned 32-bit integer. Range: 0 to 65,535 |
| Boolean |
True (enabled) or False (disabled). Default: False (disabled) |
| IPv4 mask | An IPv4 subnet mask. Example: 255.255.255.0 |
| String | An NVT ASCII string (works the same as the text data type), or a
series of hexadecimal octets separated by colons. Example:
or 43:4c:49:45:54:2d:46:4f:4f |