Patent ID: 7590148

Claim:
An accessing method for supporting a Point to Point Protocol over Asynchronous Transfer Mode (PPPoA) terminal to a broadband access device, comprising: assigning, by the broadband access device, a Media Access Control (MAC) address to the PPPoA terminal; setting up a Point to Point Protocol over Ethernet (PPPoE) connection between the broadband access device and a Broadband Access Server (BAS), and acquiring, by the broadband access device, a Session ID assigned by the BAS; and converting, by the broadband access device, a PPPoA packet sent by the PPPoA terminal into a PPPoE packet and sending the converted PPPoE packet to the BAS; converting, by the broadband access device, a PPPoE packet sent by the BAS into a PPPoA packet and sending the PPPoA packet to the PPPoA terminal, according to the MAC address and the Session ID; upon detecting a logoff of the PPPoA terminal, the broadband access device instructing the BAS to remove the PPPoE connection; and upon receiving the instruction of removing the PPPoE connection, the BAS removing the PPPoE connection between the BAS and the broadband access device; wherein the detecting a logoff of the PPPoA terminal comprises: counting the data traffic between the PPPoA terminal and the BAS within a pre-configured time period, and determining whether the data traffic increases, if the data traffic increased, determining that the PPPoA terminal is online, if the data traffic does not increase, determining that the PPPoA terminal has logged off.