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Issues with adding and using DHCPv6 "Predefined Options" on Windows Server 2019

Charles 71 Reputation points
2022-03-02T01:28:01.133+00:00

I want define option59 and option16 for network boot.
But when I use " set predefined options" to add a "DHCP Standard Options", It's not work
I click "add" and type "name","code","description", select "data type", then I click "OK"
Nothing happened, no option was added. I do this again then give me an error "The given option identifier is already in use"
Did I miss some thing?
How to add options for DHCPv6 on Windows Server 2019?
Thanks

Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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Windows DHCP
Windows DHCP
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.DHCP: Dynamic Host Configuration Protocol (DHCP). A communications protocol that lets network administrators manage centrally and automate the assignment of Internet Protocol (IP) addresses in an organization's network.
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  1. Limitless Technology 44,121 Reputation points
    2022-03-09T08:05:46.53+00:00

    Hi @Charles

    The "Vendor Class ID" and "Bootfile Name" options in IPv6 can be added manually in the pre-defined options with Option Code 16(Vendor Class ID) and 59(Bootfile Name). Maybe you are missing some pre-setup which is giving you the error message "The given option identifier is already in use".

    You can follow the steps as per this thread and try to add options for DHCPv6 on Windows Server 2019
    https://learn.microsoft.com/en-us/answers/questions/172999/how-to-use-windows-server-2016-dhcpv6-server-to-se.html

    Just for your understanding, Predefined options are the option codes defined in RFC 3315. You cannot redefine these options or delete them from the DHCP option space. Option codes 1-48 are reserved and cannot be used to define custom options.

    Custom options are option codes 49 to 254. They are not defined by IETF standards and are available for private use. You can use these option codes to provide configuration or service information that none of the predefined options provide.

    Hope this resolves your Query!!

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