How to configure your TP-Link Deco with CenturyLink’s fiber service

Configuration Guide
Updated 03-14-2025 06:20:18 AM Number of views for this article88014
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When you sign up for CenturyLink’s fiber internet service (FTTH), they’ll install an optical network terminal (ONT) somewhere in your house that converts the fiber optical into an ethernet cable. Usually, CenturyLink will also install their own modem in your house to provide Wi-Fi networks and make you pay around $10/month for the device.

You may have the following two topologies when configuring your TP-Link router with CenturyLink’s fiber service. Here, we take the TP-Link Deco router as an example to show how to configure it.

Topology 1: ONT (Ethernet cable) --- CenturyLink Modem --- TP-Link Deco

Case1. The PC can get network access when connecting it to the CenturyLink Modem directly.

Step1. Connect the modem’s LAN port to the port of the main deco via an Ethernet cable.

Step2. Do the configuration step by step. When it comes to selecting a connection type, we need to choose Dynamic IP.

Display the Internet Connection Type position on the page.

Case2. No network access when connecting the PC to the CenturyLink Modem directly.

If there is no network access when connecting the PC to the CenturyLink Modem directly, you might have configured the modem as Transparent Bridging mode, and in this case, please refer to the following steps to configure it.

Step1. Connect the modem’s LAN port to the port of the main deco via an Ethernet cable.

Step2. Refer to Step 3 in Topology 2 to configure the Deco.

Topology 2: ONT (Ethernet cable) --- TP-Link Deco

If you want to use your own hardware bypassing CenturyLink’s modem, please follow the steps below.

Step 1. Call CenturyLink for your PPPoE credentials.

Step 2. Remove the CenturyLink modem, and plug the Ethernet cable from ONT in the port of the main deco instead.

Step 3. Do the configuration step by step. When it comes to selecting a connection type, please choose PPPoE. Type in your PPPoE credentials (username and password).

Click on Advanced Settings and enable IPTV/VLAN Settings. Next, select American-CenturyLink Fiber on the ISP Profile, then VLAN ID and Internet VLAN Priority will be filled in automatically.

After that, click on Done to save the settings, and tap NEXT to complete the setup process.

Display the Internet Connection Type and Advanced Settings position on the page. Locate the IPTV/VLAN Settings button in the middle of the page. Display the details of the IPTV/VLAN Settings page.

Note: If you have chosen PPPOE and select American-CenturyLink Fiber but still have no internet, please choose Dynamic IP as internet connection type and select American-CenturyLink Fiber on the ISP Profile.

If the issue persists, we recommend contacting CenturyLink for more details.

Display the Internet Connection Type position on the page.Locate the IPTV/VLAN Settings button in the middle of the page.Display the details of the IPTV/VLAN Settings page. Select American-CenturyLink Fiber on the ISP Profile, then VLAN ID and Internet VLAN Priority will be filled in automatically.

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