Technical Tip: How to configure ASCII value in DHCP option

[ksivadas]

Description	This article explains how to configure ASCII values in DHCP options when the FortiGate (FGT) is acting as a DHCP server.
Scope	FortiOS.
Solution	Configuring ASCII values for Polycom devices in DHCP options on an NPS server. On the FortiGate, there is no direct option to configure ASCII values in DHCP options. Typically, ASCII values are used in DHCP option 43 and DHCP option 60. Use any ASCII to hexadecimal converter to convert the ASCII value (text) to a hexadecimal value. The converter used here is: https://www.rapidtables.com/convert/number/ascii-to-hex.html. In the GUI, go to Network -> Interface -> Edit -> Advanced -> Additional DHCP Options. CLI Configuration: config system dhcp server     edit 1         set dns-service default         set default-gateway 192.168.1.99         set netmask 255.255.255.0         set interface "internal"             config options                 edit 1                     set code 43                     set value "50 6F 6C 79 63 6F 6D" <---                 next             end     next end Packet capture in the DHCP option should show us the hexadecimal configured on the FortiGate Troubleshooting debugs: diagnose debug reset diagnose debug console timestamp enable diagnose debug application dhcps -1 diagnose debug enable To disable: diagnose debug disable