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Gateway apparatus and its controlling method

  • US 20030154297A1
  • Filed: 02/07/2003
  • Published: 08/14/2003
  • Est. Priority Date: 02/08/2002
  • Status: Active Grant
First Claim
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1. A gateway apparatus comprising:

  • an IPoE/PPPoE forwarding table with which registered are network addresses, protocol types, destination IP addresses used in IPoE and retrieval indexes of PPPoE sessions used in PPPoE;

    a PPPoE session table with which registered are the retrieval indexes, destination MAC addresses and PPPoE session IDs; and

    an ARP table with which registered are destination IP addresses and destination MAC addresses; and

    a control section that controls output of an input frame using information registered with the IPoE/PPPoE forwarding table, the PPPoE session table, and the ARP table, wherein the control section selects a protocol type corresponding to a network address in the IPoE/PPPoE forwarding table that matches a destination IP address included in header information of an IP packet of the input frame, and when the protocol type selected is IPoE, controls output of an IPoE frame based on a destination IP address corresponding to the network address or a destination MAC address in the ARP table in relation to the destination IP address included in the header information, while when the protocol type selected is PPPoE, controlling output of a PPPoE frame based on a destination MAC address and a PPPoE session ID in the PPPoE session table in relation to a retrieval index corresponding to the network address.

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