Patent ID: 7249194

Claim:
A gateway apparatus comprising: an IPoE forwarding table in which network addresses and destination IP addresses are registered; a PPPoE proxy table in which source MAC addresses and PPPoE session IDs on input side and destination MAC addresses and PPPoE session IDs on output side are registered; an ARP table in which destination IP addresses and destination MAC addresses are registered; and a control section that controls output of an input frame using the IPoE forwarding table, the PPPoE proxy table and the ARP table, wherein: when a PPPoE frame is input and an entry that matches header information of the PPPoE frame is registered in the PPPoE proxy table, the control section controls output of the PPPoE frame based on a destination MAC address and a PPPoE session ID on the output side registered in the entry; and when an IPoE frame is input, the control section selects a destination IP address in association with a network address in the IPoE forwarding table that matches another destination IP address included in header information of an IP packet of the IPoE frame, and controls output of the IPoE frame based on the destination IP address or a destination MAC address in the ARP table in association with the another destination IP address included in the header information.