DHCP Options
DHCP Options |
|
18
Length varies depending on data in value. Minimum length is 1 octet.
ASCII character text.
Specifies a file that can be retrieved using Trivial File Transfer Protocol (TFTP) containing information to be interpreted in the same way as the 64-octet vendor-extension field within a BOOTP response. To allow more than 64 octets of BOOTP vendor extension information, this option can be used. When this option is used, the length of the specified extension path file is not constrained in size and all references in the extensions file to tag 18 (such as instances of the BOOTP Extensions Path field) are ignored.
| Code | Length | Extensions Path |
|---|---|---|
| 18 | n | filename |
Note
For all option types provided in "Extensions Path" that use a list of IP addresses as the valued options data, IP addresses are always used in order of preference by the DHCP client, so that the first address in the list is used first.