US 8,948,201 B2 · Packet transfer apparatus

Abstract

A packet transfer apparatus connects two networks of different protocols. The packet transfer apparatus, connected to a first communication network and a second communication network, performs the steps of: storing first destination correspondence information; receiving a packet of the first communication protocol; based on the first destination correspondence information, determining destination information of a packet of the second communication protocol corresponding to destination information of the received packet of the first communication protocol; generating the header of the packet of the second communication protocol, based on the determined destination information of the packet of the second communication protocol; converting the received one or more packets of the first communication protocol into one or more packets of the third communication protocol; and adding the generated header of the packet of the second communication protocol to the packets of the third communication protocol.

Claims20

Dependent claims

A packet transfer system comprising:

a first packet transfer apparatus in a first network operated with a first communication protocol;
and
a second packet transfer apparatus in the first network operated with the first communication protocol,
wherein the first packet transfer apparatus comprises:
a first interface that
receives a second communication protocol packet from a second network operated with a second communication protocol, the second communication protocol packet being generated by a third communication protocol packet,
converts the second communication protocol packet into the third communication protocol packet with terminating the second communication protocol, and
converts the third communication protocol packet with terminating the second communication protocol into a first communication protocol packet by adding a header of the first communication protocol packet, and
a second interface that sends the first communication protocol packet into the first network, and
wherein the second packet transfer apparatus comprises:
a third interface that receives the first communication protocol packet from the first network, and
a fourth interface that
converts the first communication protocol packet into the third communication protocol packet, and
sends the third communication protocol packet to a third network.

11 more elements

A method for packet transfer between a first network operated with a first communication protocol and a second network operated with a second communication protocol, the method comprising:

receiving a second communication protocol packet from the second network at a first packet transfer apparatus, the second communication protocol packet being generated by a third communication protocol packet;
converting the second communication protocol packet into the third communication protocol with terminating the second communication protocol at the first packet transfer apparatus;
converting the third communication protocol packet with terminating the second communication protocol into a first communication protocol packet by adding a header of the first communication protocol packet at a first communication apparatus;
sending the first communication protocol packet into the first network;
receiving the first communication protocol packet from the first network at a second packet transfer apparatus;
converting the first communication protocol packet into the third communication protocol packet at the second packet transfer apparatus;
and
sending the third communication protocol packet to a third network at the second packet transfer apparatus.

5 more elements

A packet transfer apparatus in a first network operated with a first communication protocol comprising:

a first interface that
receives a second communication protocol packet from a second network operated with a second communication protocol, the second communication protocol packet is generated by a third communication protocol packet,
converts the second communication protocol packet into the third communication protocol packet with terminating the second communication protocol, and
converts the third communication protocol packet with terminating the second communication protocol into a first communication protocol packet by adding a header of the first communication protocol packet, and
a second interface that sends the first communication protocol packet into the first network, wherein the first network is connected to a third network and the first communication packet is sent out the third network after converting into a third communication protocol packet.

2 more elements

Dependencies are inferred from the claim text.

Packet transfer apparatus

Life of this patent

Packet transfer apparatus

Life of this patent

Abstract

Claims20