DHCP Reservation

This blog moved to kiewic.com

Routers with DHCP enabled assign IP addresses dynamically. It means that a random IP address is assigned to each device connected to the router, but that IP address may change later.

Some routers offer a “client lease time” setting, to make sure all devices connected will get the same IP address for a given amount of time. Even if the devices are rebooted or disconnected from the network.

DHCP Client Lease Time Setting

However, if you require a device to keep the same IP Address always, there are other options:

  1. Use a static IP address.
  2. Use DHCP Reservation/Static DHCP Assignment.

The DHCP Reservation method can be configured from the router. On a Linksys E2500 router, follow the next steps:

  1. Enter the router settings.
  2. Go to Setup > Basic Setup.
  3. Click DHC Reservation.
  4. Find the device you want it to keep always the same IP address and mark it.
  5. Click Add.
  6. Voila! This device will get always the same IP address when connected to your router.

DHCP Settings

DHCP Reservation Settings

Advantages?

By preferring DHCP Reservation over a static IP address, you do not need to modify the adapter settings on your device each time it gets connected to a different network.

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