PPPoE, an acronym for Point-to-Point Protocol over Ethernet, is a network protocol used to establish a connection between network clients and Internet Service Providers (ISPs) over Ethernet networks. It is an extension of the more common PPP (Point-to-Point Protocol) that is commonly used over dial-up connections.
PPPoE enables the encapsulation of PPP frames within Ethernet frames, allowing the transmission of PPP packets over Ethernet-based networks such as DSL (Digital Subscriber Line) or cable modem. Through PPPoE, ISP clients can establish a connection by logging in with their user credentials, much like dial-up connections.
This protocol works by creating a session between the client device, known as the PPPoE client, and the ISP's server, known as the PPPoE server. It employs a session initiation process involving the exchange of control packets for authentication and session setup. Once authenticated, the client device is assigned an IP address and can communicate with the ISP's network.
PPPoE is widely used in many broadband and DSL connections, as it enables the ISP to manage and control user sessions effectively. It provides features like authentication, so only authorized clients can access the ISP network, as well as error detection and packet sequencing, ensuring reliable and secure communication over Ethernet-based connections.
Overall, PPPoE serves as a means to establish and maintain connectivity over Ethernet networks while incorporating features and functionality of traditional PPP protocol.
