Why my Wi-Fi Router cannot get WAN parameters from my modem (new designed blue UI)?

User Application Requirement
Updated 11-25-2021 07:40:03 AM 169653
This Article Applies to: 

Precondition: Make sure Internet works fine if you connect the computer directly to the modem, by pass the TP-Link router.

Problem Description:

There is no internet access after installing the TP-Link Router and there is no WAN IP Address on the router’s status page.

Note: If you are not sure how to log into the router's web interface to check the WAN IP Address, please click  How do I log into the web-based Utility (Management Page) of TP-Link wireless router?


Solution 1Check the Physical connection between the modem and the router.

If you see a message “WAN Port is unplugged” on the Basic-Internet page of the router, it means the modem is NOT plugged into the WAN Port of the router properly. Please plug it in and make sure the red message will be gone.

Also, you can see this message on Advanced-->Network-->Internet page.

Please plug your modem into the internet port.

Solution 2: Power Cycle Modem and Router.

TP-Link routers can Plug&Play with most modems, but sometimes we need to do a "Power Cycle" to re-establish the connection:

1) Power off your modem and TP-Link router, leave them off for 1 minute; 

2) Power on your Router first and wait for about 1-2 mins;

3) Power back on your modem, wait about 2 minutes until it get a solid cable or Internet light;
4) Wait another 1 or 2 minutes and check the Internet access.

Solution 3Clone the MAC address of your PC.

Some ISP will register the MAC address of your computer when you access the Internet for the first time through their Cable modem, if you add a router into your network to share your Internet connection, the ISP will not accept it as the MAC address is changed, so we need to clone your computer's MAC address to the router.

1.Make sure that you are connected to the TP-Link Router with the computer that was originally connected to your Cable modem, then log on to the management page , click Advanced->Network->Internet ->MAC Clone on the left side.

2.Select Use Current Computers MAC Address, this function will clone your PC’s MAC address to WAN MAC Address of the router.

Solution 4: Change the LAN IP address of the router. 

Most TP-Link routers use as their default LAN IP address, it may be conflicting with the IP range of your existent ADSL modem/router. If so, the router is not able to communicate with your modem and cause that you can’t access the Internet. To resolve the problem, we need to change the LAN IP address of the router to avoid such conflict, for example, 

Click Network->LAN on the left side menu, then change the IP Address to another one (for example,, then click “Save”.

Note: after you changed the LAN IP address, next time you need to use the new IP address to access the router’s management page and renew a IP address for your computer.


Solution 5: Double check the WAN Connection Type.

1) Refer to Application Requirement/Choose WAN Connection Type on my TP-Link router for guidance of choosing correct WAN Connection Type of the router. Contact your ISP for suggestion if necessary.

2) Click Network->Internet in the left menu to configure the correct Internet Connection Type->Save.

3. Power cycle the modem and the router again.



Get to know more details of each function and configuration please go to Download Center to download the manual of your product.


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