How to change the IP Address on a Linksys WRT51AB router

This page shows how to change the LAN IP Address on the Linksys WRT51AB router.

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This is the ip address guide for the Linksys WRT51AB. We also have the following guides for the same router:

Linksys WRT51AB - Linksys WRT51AB User Manual

Linksys WRT51AB - Linksys WRT51AB Login Instructions

Linksys WRT51AB - How to change the DNS settings on a Linksys WRT51AB router

Linksys WRT51AB - Setup WiFi on the Linksys WRT51AB

Linksys WRT51AB - How to Reset the Linksys WRT51AB

Linksys WRT51AB - Information About the Linksys WRT51AB Router

Linksys WRT51AB - Linksys WRT51AB Screenshots

What is the LAN IP Address of a Router

The LAN IP Address of a router is also known as its internal IP address. It is also the IP address that you connect to when you want to configure your router. It is only useful from inside your network and has no use from the Internet side.

Routers have 2 IP addresses: an internal ip address and an external ip address. The external IP address is assigned to you by your Internet Service Provider, or ISP, and is generally not something that you can change. The internal IP address is set to a default value at the factory but can be changed if you want.

Common internal IP addresses for routers are:

192.168.0.1
192.168.1.1
10.0.0.1

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It is generally a good idea to make the last number of your router's internal IP address a '1', as in 192.168.0.1 or 10.0.0.1. This is not necessary, but many people do it and it makes it a bit easier to remember which IP address is assigned to your router. If you want to change the internal IP address of your router, this guide shows you how.

Login To The Linksys WRT51AB

To get started configuring the Linksys WRT51AB LAN page you need to login to your router. If you are already logged in you can skip this step.

To login to the Linksys WRT51AB, follow our Linksys WRT51AB Login Guide.

Change the LAN IP Address on a Linksys WRT51AB

If you followed our login guide above then you should see this screen.

router setup — This is the *setup* page from your Linksys WRT51AB router.

Now that you have logged into the Linksys WRT51AB you should see the Setup page. This is the only page you need when changing your Router's IP Address, the address you are actually looking at while inside your network.

Configure the LAN section of your Linksys WRT51AB

On the blue side bar, find the heading of LAN, then, IP Address. There are four boxes next to this, this is where you need to enter the new address you have chosen for your Router. We suggest using the same address as you see in these screenshots, 192.168.1.1

While changing the Router IP Address, please leave the Subnet Mask at 255.255.255.0

Last of all, save by clicking the Apply button.

Possible Problems when Changing your LAN IP Address

When you change your LAN IP Address you are making a fundamental change to how your network functions and all computers on your network will be affected. You will lose your Internet connection when you apply these changes. Your router may reboot and require a couple of minutes to start responding again.

Also note that some computers may need to be rebooted after you make this change before they can talk to the router or on the Internet again.