How to Set Up DHCP Reservation on Your Router

What DHCP reservation means

DHCP stands for Dynamic Host Configuration Protocol. When a device joins your network, the router's DHCP server lends it an IP address from a pool. That address can change when the lease expires or the device reconnects. A DHCP reservation tells the router to always offer the same address to a particular device.

To identify the device, the router uses its MAC address, a hardware identifier for the network interface. Because the reservation exists on the router, the device does not need a manual network configuration. This is one of the cleanest ways to get a static IP address without touching the device itself. For more background on the identifier behind the reservation, see MAC address explained.

Why use a reservation

You mainly need a reservation for services that expect a device to be reachable at the same address. Examples include port forwarding, media servers, network printers, IP cameras, game consoles, and home automation hubs. Without a reservation, a device address can drift, and the rule or shortcut you created for it may stop working.

For most people, the most common target for a reservation is a device you want to reach from outside the house. Port forwarding works by sending incoming traffic to a specific local IP, so if that IP changes, the rule breaks. The same logic applies to remote desktop software, game servers, and video doorbells that need a consistent address.

• Port forwarding rules stay valid when the device address never changes.
• Network printers and network storage remain easy for computers and phones to find.
• Remote access tools and VPN clients can connect to a stable local destination.
• Parental controls and QoS rules tied to an IP address are more reliable.

Before you start

You need two things: access to the router's admin area and the MAC address of the target device. The exact name of the settings page varies by router, but most call it DHCP reservation, address reservation, or static DHCP. If you are not sure how to get into the router, follow the steps for logging in to the router admin page.

Find the target device's MAC address in the router's device list, or check the device itself in its network or about screen. The router often lists every connected device with its current IP and MAC. This is also a good time to decide which address to reserve. Pick one outside the router's automatic DHCP range to avoid a conflict, or use the router's built-in reservation tool so it can manage the address for you.

To identify a device quickly, disconnect it and see which entry disappears from the connected devices list. Many devices also print the MAC address on a label, usually on the bottom or back of the unit.

How to set up the reservation

The general process is the same across brands. Open the router's DHCP settings, find the list of connected clients, choose the device you want to reserve, and enter the IP address you want it to keep. Save the change and, if necessary, reboot the device or ask it to renew its DHCP lease.

If the device does not pick up the reservation right away, restarting the device is usually enough. Some routers also let you create a reservation manually by typing the MAC address, which is useful for a device that is not currently online. Router maker apps may offer the same feature in a simplified form, while the full web interface is more likely to give you control over the DHCP pool and lease settings. If your app hides the reservation option, check the router app versus web interface article for help.

• Log in to the router admin page or open the companion app.
• Go to the LAN, network, or DHCP settings section.
• Find the DHCP reservation or address reservation option.
• Select the device by its name or MAC address.
• Enter the reserved IP address.
• Save and apply the settings.
• Restart or reconnect the device if it keeps the old address.

Reservation, static IP, and lease time

A DHCP reservation is sometimes called a static DHCP assignment. It is different from setting a manual static IP on the device, because the device keeps using DHCP. The router simply always returns the same address when that device asks. This matters when a device needs a fixed address but you still want central control over IP assignments.

Lease time still applies to a reservation in most routers, but because the router always offers the same address, the result feels static. You can read more about DHCP lease time to understand renewal behavior. The practical difference shows up when you move a device to another network: a manual static IP may not work there, while a reservation is local to the router that hosts it.

Troubleshooting and security

If a device does not receive its reserved address, check that you selected the correct MAC address. Some devices have more than one network interface, such as Wi-Fi and Ethernet, and each one uses a different MAC. Also confirm that the reserved address is available and not already held by another device. If the reservation still fails, follow the usual steps for a DHCP reservation not working issue.

A DHCP reservation is not a security feature. It makes addressing predictable, but any device that knows the network can claim an address, and MAC addresses can be imitated. For a safer network, pair reservations with a strong Wi-Fi password and modern security methods. Wi-Fi Alliance security standards such as WPA3 provide stronger authentication for personal networks. Start with router security basics for next steps.

What to pick for your use

Questions

What is a DHCP reservation?

A DHCP reservation is a router setting that links a specific IP address to a specific device's MAC address. When that device asks for an address, the router always offers the same one.

Is a DHCP reservation the same as a static IP address?

Not exactly. A static IP is configured manually on the device. A DHCP reservation is configured on the router, and the device still goes through the normal DHCP process. The result is a fixed address, but the management stays centralized.

Will a DHCP reservation speed up my network?

No. A reservation changes address stability, not bandwidth or latency. It helps services that rely on a consistent address, but it will not make Wi-Fi faster.

Can I reserve an IP for a device that is currently offline?

Yes, if you already know the device's MAC address. Many routers let you add a reservation manually. Some routers only show connected devices, so you may need to connect the device once before it appears in the list.

Why does my device still show a different IP after I set a reservation?

The device may still have an active lease for its old address. Restart the device, disconnect and reconnect it, or ask it to renew its DHCP lease. Also check that you entered the correct MAC address and that the reserved IP is not already in use.

Do I need a reservation for every device?

No. Use reservations only for devices that need a predictable address, such as a printer, network storage device, game console, security camera, or a device used with port forwarding. Other devices can keep using dynamic addresses.