User-defined and vendor-specific options

In addition to the DHCP options specified in RFC 2132, you can define new options with codes in the range 128 through 254. These user-defined options become part of the total set of DHCP options configurable globally or for any client, subnet, user class or vendor class. To define a new option, you need to specify the following information for it:

• the option's name

• a description of the option

• the option's type (for example, IP address, string, integer, and so on)

• the minimum and maximum allowed values for the option (if the option is an integer)

• the minimum and maximum allowed length for the option (if the option is an IP address, string, binary or array)