How to change the IP Address on a 3com 3CRWDR101A-75 router

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Setup Router Staff
(Last Updated: ) | Reading Time: 3 minutes

This page shows how to change the LAN IP Address on the 3com 3CRWDR101A-75 router.

Other 3com 3CRWDR101A-75 Guides

This is the ip address guide for the 3com 3CRWDR101A-75. 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 3com 3CRWDR101A-75

To get started configuring the 3com 3CRWDR101A-75 LAN page you need to login to your router. If you are already logged in you can skip this step.

To login to the 3com 3CRWDR101A-75, follow our 3com 3CRWDR101A-75 Login Guide.

Change the LAN IP Address on a 3com 3CRWDR101A-75

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

subManu subModel router
This is the general page from your 3com 3CRWDR101A-75 router.

When you first log into the 3Com 3CRWDR101A-75 you see a Welcome page. To the left of the screen, in dark blue, click the second choice labeled LAN Settings.

Once on the LAN Settings page click the Unit Configuration tab near the top of the page.

Configure the LAN section of your 3com 3CRWDR101A-75

router setup
This is the setup page from your 3com 3CRWDR101A-75 router.

Now you are able to change your IP Address. In the top box labeled LAN Configuration type in your new IP Address. Our recommendation would be to use the IP Address of 192.168.1.1, and leave the Subnet Mask at 255.255.255.0

You can leave the DHCP Server on, the Router it picks them for you automatically. Don't forget to click Apply to save any changes you have made.

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 3com 3CRWDR101A-75 Info

Don't forget about our other 3com 3CRWDR101A-75 info that you might be interested in.

This is the ip address guide for the 3com 3CRWDR101A-75. We also have the following guides for the same router: