How to Set Up PPPoE Internet Access

PPPoE identifies a specific consumer on a broadband internet connection

By
Bradley Mitchell
Bradley Mitchell
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  • Massachusetts Institute of Technology
  • University of Illinois
An MIT graduate who brings years of technical experience to articles on SEO, computers, and wireless networking.
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Updated on April 23, 2022
Reviewed by
Jerrick Leger
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Reviewed by Jerrick Leger
Jerrick Leger is a CompTIA-certified IT Specialist with more than 10 years' experience in technical support and IT fields. He is also a systems administrator for an IT firm in Texas serving small businesses.
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What to Know

  • Go to Setup or Internet menus of router > select PPPoE as connection type > enter necessary information.
  • PPPoE internet providers assign each of their subscribers a unique PPPoE username and password.
  • PPPoE works on either a broadband router or a broadband modem.

This article explains how to set up Point to Point Protocol over Ethernet (PPPoE) internet access, as well as how the protocol works and potential issues. Specific instructions for setting up PPPoE differ by manufacturer, with different approaches by Belkin, Linksys, Netgear, and TP-LINK.

How to Set Up PPPoE Internet Access

  1. In the Setup or Internet menus of your router, select PPPoE as the connection type.

  2. Enter the required parameters in the fields provided. You need to know the PPPoE username, password, and (sometimes) Maximum Transmission Unit size.

Because the protocol was initially designed for intermittent connectivity, such as with dial-up-networking connections, broadband routers also support a keep-alive feature that manipulates PPPoE connections to ensure always-on internet access. Without keep-alive, home networks would automatically lose their internet connections.

How PPPoE Works

PPPoE internet providers assign each of their subscribers a unique PPPoE username and password. Providers use this network protocol to manage IP address allocations and track each customer's data usage.

The protocol works on either a broadband router or a broadband modem. The home network initiates an internet connection request, sends PPPoE usernames and passwords to the provider, and receives a public IP address in return.

PPPoE uses a protocol technique called tunneling, which is essentially the embedding of messages in one format within the packets of another format. PPPoE functions similarly to virtual private networking tunneling protocols like Point-to-Point Tunneling Protocol.

Does Your Internet Service Use PPPoE?

Many, but not all, DSL internet providers use PPPoE. Cable and fiber internet providers do not use it. Providers of other types of internet service such as fixed wireless internet may or may not use it. Check with your service provider to confirm whether the company uses PPPoE.

Some internet providers may supply their customers with a broadband modem with the necessary PPPoE support configured.

Problems With PPPoE

PPPoE connections might require special MTU settings to function properly. Providers tell their customers if their network requires a specific MTU value—numbers like 1492 (the maximum PPPoE supports) or 1480 are common. Home routers support an option to set the MTU size manually when needed.

A home network administrator can accidentally erase PPPoE settings. Because of the risk of error in home networking configurations, some ISPs have moved away from PPPoE in favor of DHCP-based customer IP address assignment.

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