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How to change the IP Address on a Cisco DPC3941B router

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Setup Router Staff
(Last Updated: ) | Reading Time: 4 minutes

This page shows how to change the LAN IP Address on the Cisco DPC3941B router.

Other Cisco DPC3941B Guides

This is the ip address guide for the Cisco DPC3941B v303r2042173-151003a-CMCST Comcast. We also have the following guides for the same router:

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

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 Cisco DPC3941B

To get started configuring the Cisco DPC3941B LAN page you need to login to your router. If you are already logged in you can skip this step.

To login to the Cisco DPC3941B, follow our Cisco DPC3941B Login Guide.

Change the LAN IP Address on a Cisco DPC3941B

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

router status mac address internet IP
This is the status page from your Cisco DPC3941B router.

We begin this guide on the Home page of the Cisco DPC3941B router. To change your IP address click Connection on the left hand side of the page and then Local IP Network just beneath that.

Configure the LAN section of your Cisco DPC3941B

router IP address lan home network
This is the lan page from your Cisco DPC3941B router.

This brings you to the page you see above.

This page allows you to change your router's Gateway Address, also known as your router's IP address. Enter your desired address into the provided boxes. Not sure what you should change it to? One good option is 192.168.1.1

Just beneath that you'll see the Subnet Mask. Be sure to leave this as it is. It's important that this stay at 255.255.255.0

Congratulations! That's all there is to it. Just be sure to click Save Settings before leaving the page.

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.

Other Cisco DPC3941B Info

Don't forget about our other Cisco DPC3941B info that you might be interested in.

This is the ip address guide for the Cisco DPC3941B v303r2042173-151003a-CMCST Comcast. We also have the following guides for the same router: