Resolving no internet IP address on the router's web interface

In setting up your router with your Internet Service Provider's (ISP) modem, one of the challenges you may encounter is when there is no WAN or internet IP address registered on the web interface of your router. This is a known issue for cable modems that are not immediately recognized by the router. To resolve this issue, you may need to manually configure your router to communicate better with your modem.
The WAN IP Address is provided by your ISP and can be located in the Status tab of the web interface.  


Copy the MAC address of the computer that was originally connected to your modem directly
1. Click the Windows sf135930-001_en_v5 icon and enter “Command Prompt” in the search field.
2. Click Command Prompt from the search results.
3. In the Command Prompt window, enter “ipconfig/all” and press [Enter].

4. Locate the Ethernet adapter section and take note of the Physical Address. This is what you will use on the router’s web interface.

The Physical Address is also called theMAC address.
5. Connect your computer and modem to the Linksys router.

Manually enter the computer's MAC address in the router’s web interface
1. Unplug your ISP’s modem from the power outlet.
2. Access the router’s web interface.

3. On the Setup page, click the MAC Address Clone sub-tab.
4. Click Enabled and manually enter the MAC address in the available boxes. Do not click the Clone My PC’s MAC button.
5. Click Save Settings.
6. Click the Status tab.
7. Verify that the Internet MAC Address matches the one from the Command Prompt for the ethernet adapter. When you are sure that the MAC address is a definite match, power OFF the router by unplugging it from the power outlet.

8. Plug the modem back into the power outlet and wait for all the lights to sync up including the upstream and downstream lights.
9. Power back ON the router and wait for the lights to sync up.
10. Access the router’s web interface and click the Status tab to verify your ISP’s Internet Address.
The internet IP address from your modem will now reflect on the router’s Status page. You may now test websites to verify your connection to the internet.
If you can’t access a website and there is no internet IP address on the Status page of the router yet, click the Release IP Address or Renew IP Address button.


Find out more:

Using global and virtual MAC addresses when enabling Wireless MAC filter

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