In IP over Ethernet (IPoE) scenario, a PC is connected to the Ethernet interface of a BRAS through a Layer 2 device (such as LAN Switch). When the PC accesses the IPv4 network, a user IP packet is encapsulated into an IPoE packet on the Ethernet interface. The IPoE packet is forwarded to the BRAS through the Layer 2 device. The BRAS then authenticates the user and authorizes user services based on physical or logical information carried in the IPoE packet, such as the MAC address, VLAN ID, and Option 82 (line information).
Compared with Point-to-Point over Ethernet (PPPoE), IPoE is easy to use and does not need any client dial-in software.
In addition, the IPTV or PPPoE access can no longer meet the customers' new requirements, especially new services that need to be deployed with multicast. IPoE is an access technology that can meet requirements of multiple services.
IPoE offers the following benefits to carriers:
IPoE is a simple method of accessing the Internet, and does not need any client dial-in software.
IPoE is an economic method of accessing the Internet, and does not need any user device (such as modem) at the client.
IPoE is an access method that facilitates the deployment of multicast services. It provides users with value-added services, such as IPTV, NGN telephone, and broad vision.
IPoE offers the following benefits to users:
IPoE is easy to use. After connecting the PC to the Internet, a user can access the Internet directly after the computer is started.