DHCP Option Reference & Builder
Browse RFC 2132 DHCP options and build hex payloads for option 43, 60, 66, 67, and 51 - VoIP phone and router provisioning with ISC dhcpd output. Free.
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What is DHCP Option Reference & Builder?
DHCP Option Reference lists the most-used RFC 2132 DHCP options with their codes, types, and purposes, and includes a builder that encodes option 43, 60, 66, 67, and 51 payloads into the hex bytes VoIP phones and routers expect - complete with a ready-to-paste ISC dhcpd configuration line.
Key Benefits
- Provision VoIP phones and APs without hand-computing hex
- Option table doubles as an offline troubleshooting reference
- ISC dhcpd config line is ready to paste, format-free
- Byte-order-correct encoding for strings and uint32 values
- Instant and offline - encoding happens in your browser
Common Use Cases
- •Rolling out IP phones that discover their TFTP server via option 66
- •Configuring PXE boot entries with options 66 and 67
- •Setting classless static routes with option 121 on a router
- •Teaching network engineers the DHCP option landscape
How to Build a DHCP Option Payload
- Find the option: Search the reference table by code or name to confirm the option number and type.
- Enter the value: Pick the option in the builder and type the value - text for 43/60/66/67, seconds for lease time.
- Copy the payload: Copy the hex bytes or the ready ISC dhcpd config line into your DHCP server configuration.
Key Features
- 25 most-used RFC 2132 options with codes, types, and descriptions
- Instant filtering by option code or name
- Hex payload builder for options 43, 60, 66, 67, and 51
- Proper byte-order encoding for strings and uint32 values
- Copy-ready hex plus the matching ISC dhcpd config line
- Instant, offline encoding - nothing leaves your browser