Patent ID: 7424023

Claim:
A method for quick access to a data network, in which data terminal devices of subscribers are each connected by a modem to an access multiplexer each by way of a digital subscriber line, the method comprising: using the Point-to-Point Protocol over Ethernet (PPPoE) for a data transfer between the data terminal devices and an access server which is located downstream of the access multiplexer; checking the access authorization of the data terminal devices and establishing the access to the data network by the access server; establishing a link from the access multiplexer to the access server and to further components located downstream of the access server using an Ethernet network; assigning an Ethernet bridge to the access multiplexer or integrating an Ethernet bridge into the access multiplexer; evaluating an PPPoE header contained in a received Ethernet frame by the Ethernet bridge, the Ethernet bridge equipped with a filtering mechanism for evaluating; forwarding the Ethernet frame to the Ethernet bridge if the PPPoE header can be assigned to an existing connection confirmed by the access server, or if the PPPoE header can be assigned to a connection which is being set up; discarding all other Ethernet frames which contain a PPPoE header; and discarding all Ethernet frames which do not contain a PPPoE header.