Configure WAN settings on your CenturyLink modem

WAN settings allow you to change the protocol and addressing type required by CenturyLink for internet access. Do not change these settings unless instructed by a CenturyLink technician. 

NOTE:  Depending on your model, your modem's user interface may appear slightly different from the images below.

First, access the WAN settings

There are a few types that can be set up, but all configuration types will begin with the same 5 steps below.

5.  Select "WAN Settings" in the left sidebar. This menu option may appear beneath the WAN Settings section, or the IP Addressing section, depending on your modem model.

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Next, choose your setup type

A PPP connection is used by some providers to deliver your internet. The DSL light on the modem should be solid green, indicating an active network connection, before configuring this setting.

Start by following steps 1-5 above to access your modem's WAN settings. Then continue with step 6: 

6.  Select "PPPoE" for the ISP Protocol.

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7.  Enter the PPP username and password details:

  • Enter your PPP username.
  • Enter your PPP password.
  • Enter the password again to confirm.
  • Select "Enable" for "PPP Auto Connect."
  • Select "Disable" for "No PPP Credentials."
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Note: If you don't know your PPP username or password, chat with tech support.  

From here, follow the steps specific to your type of PPPoE setup:

This setup applies to 99% of PPPoE customers.

Make sure you've completed steps 1-7 above, then continue with step 8: 

8.  Select "Dynamic IP" for the IP Addressing Type.

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9.  Select "Dynamic DNS" for the DNS type.

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10.  Select "Apply" to save your changes.

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This applies only if you have leased a single IP address. Please note that static IPs are not compatible with Prism® TV and are not available in all areas. 

Make sure you've completed steps 1-7 above, then continue with step 8: 

8.  Enter the IP addressing details.

  • Select "Single Static IP" for the IP Addressing Type.
  • Enter the single static IP address that you leased.
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9.  Select "Dynamic DNS" for the DNS type.

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10.  Select "Apply" to save your changes.

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This applies only if you have leased a block of IP addresses and want a private or a public LAN (local area network) Subnet. Please note that static IPs are not compatible with Prism® TV and are not available in all areas. 

  • The Private LAN Subnet tells the modem to assign all devices on the network a private LAN IP address (e.g. 192.168.0.4). The exception is for any device that has the TCP/IP settings manually configured with an "assignable" WAN IP address from your block.

 

  • The Public LAN Subnet option tells the modem to assign all devices on the network an assignable WAN IP address from your block of leased addresses.

Make sure you've completed steps 1-7 above before continuing with step 8: 

  8.  Enter the IP addressing details.

  • Select "Block of Static IP Addresses" for the IP Addressing Type.
  • Enter the "Gateway Address" that was provided to you when you leased your static IP addresses.
  • Enter the "Subnet Mask" that was provided to you when you leased your static IP addresses.
  • Select either "Private LAN Subnet" or "Public LAN Subnet" for "LAN DHCP Addressing."
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9.  Enter the DNS details.

  • Select "Static DNS" for the DNS type.
  • Enter your Primary and Secondary DNS (DNS lookup).
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10.  Select "Apply" to save your changes.

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The DSL light on the modem should be solid green, indicating an active network connection, before configuring this setting.

Start by following steps 1-5 above to access your modem's WAN settings. Then continue with step 6: 

6.   Select "IPoE" for the ISP Protocol.

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7.  Select "Dynamic" or "Static IP" for the IP Addressing Type.

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7b.  For Static IP only, enter your IP address, subnet mask, and gateway address.

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8.  For dynamic IP, select "Dynamic DNS." For static IP, select "Static DNS." Enter the primary and secondary DNS for your area.

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9.  Select "Apply" to save your changes.

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The DSL light on the modem should be solid green, indicating an active network connection, before configuring this setting.

Start by following steps 1-5 above to access your modem's WAN settings. Then continue with step 6:

6.  Select "Transparent Bridging" for the ISP Protocol.

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7.  Chat with tech support to get the transport mode (VLAN Setting) that works in your area (not available in all areas).

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8.  Select "Apply" to save your changes.

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