> For the complete documentation index, see [llms.txt](https://docs.islandrouter.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.islandrouter.com/island-router-cli-2.3.2/commands/ip-global-context/ip-dhcp-reserve.md). # ip dhcp-reserve ## Syntax ``` [no] ip dhcp-reserve ``` ## Syntax Description
KeywordDescription
no(Optional) Removes an existing DHCP reservation
ipThe IP address to be assigned to the device.
macThe MAC address of the device.
## Defaults There are no DHCP reservations by default. ## Usage Guidelines This command reserves an IP address for a client. The DHCP server will not assign a reserved IP address to any other client. When the client makes a DHCP request to the Island, the DHCP server will assign the specified address to the client, if able. If the server is unable to assign the address (perhaps because the address is already in use by another client), it will assign another address from the DHCP scope. When the client renews its DHCP lease, the DHCP server will again try to assign the reserved address. The reserved IP address must be a valid address on one of the interfaces on the Island. However, it does not need to be within the DHCP scope assigned to the interface. Only one DHCP reservation is allowed for a given device. ## Examples ``` ip dhcp-reserve 192.168.3.77 00:00:5E:00:53:7A ``` ## Related Commands --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.islandrouter.com/island-router-cli-2.3.2/commands/ip-global-context/ip-dhcp-reserve.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.